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For Public Comment DRAFT MALAYSIAN 13E001R0 STANDARD STAGE : PUBLIC COMMENT (40.20) DATE : 01/12/2015 - 31/01/2016 Connection of distributed generation to distribution network - Code of practice OFFICER/SUPPORT STAFF: (NIMM/zt) ICS: 29.240.99 Descriptors: connection, distributed, generation, distribution, network © Copyright 2015 DEPARTMENT OF STANDARDS MALAYSIA

DRAFT MALAYSIAN 13E001R0 STANDARD - SIRIM … Energy Development Authority Malaysia Tenaga Nasional Berhad The Electrical and Electronics Association of Malaysia The Institution of

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Page 1: DRAFT MALAYSIAN 13E001R0 STANDARD - SIRIM … Energy Development Authority Malaysia Tenaga Nasional Berhad The Electrical and Electronics Association of Malaysia The Institution of

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DRAFT

MALAYSIAN 13E001R0

STANDARD STAGE : PUBLIC COMMENT (40.20)

DATE : 01/12/2015 - 31/01/2016

Connection of distributed generation to distribution network - Code of practice OFFICER/SUPPORT STAFF: (NIMM/zt) ICS: 29.240.99 Descriptors: connection, distributed, generation, distribution, network

© Copyright 2015 DEPARTMENT OF STANDARDS MALAYSIA

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Contents

Page Committee representation ..................................................................................................... ii Foreword ...............................................................................................................................iv 1 Scope ....................................................................................................................... 1 2 Normative references ................................................................................................ 1 3 Terms and definitions ................................................................................................ 1 4 Abbreviations ............................................................................................................ 4 5 Classification of distributed generation ..................................................................... 5 6 Connection criteria .................................................................................................... 7 7 Protection requirements .......................................................................................... 12 8 Operational requirements ........................................................................................ 13 9 SCADA system requirements .................................................................................. 15 10 Interconnection system testing ................................................................................ 15 11 Safety ..................................................................................................................... 16 Bibliography. ...................................................................................................................... .17

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Committee representation The Industry Standards Committee on Generation, Transmission and Distribution of Energy (ISC E) under whose authority this Malaysian Standard was developed, comprises representatives from the following organisations: Association of Consulting Engineers Malaysia Department of Standards Malaysia Federation of Malaysian Manufacturers Jabatan Kerja Raya Malaysia Malaysia Nuclear Power Corporation Malaysian Association of Standards Users Malaysian Cable Manufacturers Association Malaysian Electrical Appliances and Distributors Association Malaysian Green Technology Corporation Persatuan Kontraktor Elektrikal dan Mekanikal Melayu Malaysia SIRIM Berhad (Secretariat) SIRIM QAS International Sdn Bhd Sabah Electricity Sdn Bhd Sarawak Energy Berhad Suruhanjaya Komunikasi dan Multimedia Malaysia Suruhanjaya Tenaga Sustainable Energy Development Authority Malaysia Tenaga Nasional Berhad The Electrical and Electronics Association of Malaysia The Institution of Engineers, Malaysia Universiti Malaya The Technical Committee on Renewable Energies which supervised the development of this Malaysian Standard consists of representatives from the following organisations: Association of Consulting Engineers Malaysia Bank Pembangunan Malaysia Berhad Department of Environment Felda Palm Industries Sdn Bhd Forest Research Institute Malaysia Jabatan Pengurusan Sisa Pepejal Negara Malaysian Association of Standard Users Malaysian Photovoltaic Industry Association SIRIM Berhad (Environmental Technology Research Centre) SIRIM Berhad (Secretariat) Sarawak Energy Berhad Suruhanjaya Tenaga Sustainable Energy Development Authority Malaysia Tenaga Nasional Berhad, Distribution TNB Energy Services Sdn Bhd TNB Research Sdn Bhd The Institution of Engineers, Malaysia Universiti Tenaga Nasional

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Committee representation (continued) The Working Group on Connection of Renewable Energy Generation to Distribution Network which developed this Malaysian Standard consists of representatives from the following organisations: Ministry of Public Utilities, Sarawak

SIRIM Berhad (Secretariat)

Sabah Electricity Sdn Bhd

Sarawak Energy Berhad

Suruhanjaya Tenaga

Sustainable Energy Development Authority Malaysia

Tenaga Nasional Berhad (Asset Management Department, Planning)

Tenaga Nasional Berhad (Asset Management Department, Protection)

Tenaga Nasional Berhad (Sustainable Energy Development Section)

TNB Energy Services Sdn Bhd

The Institution of Engineers, Malaysia

Universiti Tenaga Nasional

Malakoff Utilities Sdn Bhd (co-opted)

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Foreword This Malaysian Standard was developed by the Working Group on Connection of Renewable Energy Generation to Distribution Network under the authority of the Industry Standards Committee on Generation, Transmission and Distribution of Energy. Compliance with a Malaysian Standard does not of itself confer immunity from legal obligations.

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Connection of distributed generation to distribution network - Code of practice

1 Scope This Malaysian Standard establishes criteria and requirements for connection of distributed generation to distribution network. 2 Normative references The following normative references are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the normative reference (including any amendments) applies. MS IEC 61000-4-15, Electromagnetic compatibility (EMC) - Part 4-15: Testing and measurement techniques - Flickermeter - Functional and design specifications Electricity Supply Act 1990 and Electricity Regulations 1994 Electricity Ordinance (Chapter 50), the Electricity Rules 1999 and the Electricity (State Grid Code) Rules 2003 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 consumer A person who is supplied with electricity or whose premises are for the time being connected for the purpose of supply of electricity by a distribution licensee. 3.2 distributed generation Distributed generation can consist of distributed generating unit(s) and or distributed generator(s). 3.3 distributed generating unit Generating units directly connected to the distributor’s distribution system or to the distribution system of an embedded distributor which is connected to the distributor’s distribution system, and not having any connection with the transmission system. Typical generating units include inverter based generation, synchronous and asynchronous based generation. 3.5 distributed generator A generating unit, including a consumer with own generation, whose generating units are directly connected to the distributor’s distribution system or to the distribution system of an embedded distributor which is connected to the distributor’s distribution system, and not having any connection with the transmission system.

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3.6 distribution licensee The holder of the licence to distribute energy issued by the Energy Commission or Ministry of Public Utilities, Sarawak. 3.7 distribution network A system comprising of electrically connected equipment or elements that produce, transport, transform, control, and consume electrical power at medium and low voltage levels not greater than 50 kV nominal. 3.8 distribution system A system consisting (wholly or mainly) of electrical lines which are owned and operated by a distributor and used for the distribution of electricity from grid supply points or generating units or other entry points to the point of delivery to customers or other distributors. 3.9 electromagnetic compatibility The ability of an equipment or system to function satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to anything in that environment. 3.10 embedded distributor A person who distributes electricity under a Licence issued under the Electricity Supply Act 1990 and Electricity Regulations 1994 or Electricity Ordinance (Chapter 50), the Electricity Rules 1999 and the Electricity (State Grid Code) Rules 2003 and whose distribution system is connected to the distributor’s distribution system under a connection agreement and not having any connection with the transmission system; and who is required to comply with the distribution code as a user at a connection point with the distributor’s distribution system and also as a distributor in respect of his own distribution system. 3.11 emission (electromagnetic) Phenomenon by which electromagnetic energy emanates from a source. Emission refers to phenomena such as conducted electromagnetic disturbances that can cause distortions, fluctuations or unbalance on the supply voltage. 3.12 emission level (of a disturbing source) Level of a given electromagnetic disturbance emitted from a particular device, equipment, system or disturbing installation as a whole, assessed and measured in a specified manner. 3.13 emission limit (allowed from a polluting source) The specified maximum emission level of a source of electromagnetic disturbance (e.g. device, equipment, system or disturbing installation as a whole). 3.14 flicker Impression of unsteadiness of visual sensation induced by a light stimulus whose luminance or spectral distribution fluctuates with time.

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3.15 flicker indicator A measure of flicker evaluated over a specified time interval. 3.15.1 long-term flicker indicator- Plt A measure of flicker evaluated over a specified time interval of a relatively long duration, using successive values of the short-term flicker indicator. NOTE. The duration is typically 2 hours, using 12 successive values of Pst, in accordance with MS IEC 61000-4-15. 3.15.2 short-term flicker indicator - Pst A measure of flicker evaluated over a specified time interval of a relatively short duration NOTE. The duration is typically 10 minutes, in accordance with MS IEC 61000-4-15. 3.16 fundamental component Sinusoidal component of the Fourier series of a periodic quantity having the frequency of the quantity itself. 3.17 harmonic frequency Frequency which is an integer multiple greater than one of the fundamental frequency or of the reference fundamental frequency NOTE. The ratio of the harmonic frequency to the fundamental frequency is the harmonic order (recommended notation: “h”). 3.18 immunity (to a disturbance) Ability of a device, equipment or system to perform without degradation in the presence of an electromagnetic disturbance. 3.19 immunity level The maximum level of a given electromagnetic disturbance on a particular device, equipment or system for which it remains capable of operating with a declared degree of performance. 3.20 islanding A condition in which a portion of the utility system that contains both load and distributed resources remains energised while isolated from the remainder of the utility system. 3.21 low voltage A voltage normally exceeding extra low voltage but not exceeding 1000 volts or 1 kV. 3.22 medium voltage A voltage normally exceeding low voltage but equal to or not exceeding 50 000 volts or 50 kV.

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3.23 point of common coupling The point on the distribution network, electrically closest to the DG connection point, at which other DGs or loads are connected. 3.24 power quality Characteristics of the electric current, voltage and frequencies at a given point in an electric power system, evaluated against a set of reference technical parameters. NOTE. These parameters might, in some cases, relate to the compatibility between electricity supplied in an electric power system and the loads connected to that electric power system. 3.25 renewable energy Electricity that is generated or produced from renewable resources. 3.26 total harmonic distortion Harmonic distortion is the departure of a waveform from sinusoidal shape that is caused by the addition of one or more harmonics to the fundamental. THD is the square root of the sum of the squares of all harmonics expressed as a percentage of the magnitude of the fundamental. 3.27 voltage dip (voltage sag) A sudden reduction of the voltage at a point in an electrical system followed by voltage recovery after a short period of time from a few cycles to a few seconds. 3.28 voltage fluctuation Series of voltage changes or a continuous variation of the r.m.s. or peak value of the voltage 3.29 voltage unbalance In a poly-phase system, a condition in which the magnitudes of the phase voltages or the phase angles between consecutive phases are not all equal (fundamental component). 4 Abbreviations For the purposes of this standard, the following abbreviations apply. DG distributed generation DOC distribution operating code DPC distribution planning code EG embedded generation EMC electromagnetic compatibility LV low voltage MV medium voltage PCC point of common coupling SCADA supervisory control and data acquisition THD total harmonic distortion

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5 Classification of distributed generation 5.1 General 5.1.1 The initial concept of an electrical supply network consisting of generation from numerous generating units of large capacities with supply voltage stepped up to high levels of 132kV and above to be connected to the transmission network which then have to be stepped down to required voltage levels for distribution has somewhat been modified with the introduction of the distributed generation (DG) or sometimes referred to as embedded generation (EG). 5.1.2 DG or EG could be defined as the production of electrical power by converting another form of energy in a generating unit that is connected to a distribution system at specific locations. 5.1.3 In this standard, a DG Plant is defined as a generating plant comprising of one or more generating units that could be connected to the distribution network at the low to medium voltage level and whose total power output could be scheduled to be totally consumed by loads in that distribution network as shown in Figure 1.The connection is only to distribution medium voltage network. Connection to transmission network is not covered under this code of practice.

Figure 1. Distributed generation (DG)

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5.2 Type of distributed generation There are three main types of distributed generation that interface to the distribution network. Each type has its own specific characteristic with regards to fault current contribution and duration, synchronisation equipment, protective functions, starting practices, and electrical operating behavior. These include: a) asynchronous (induction) machines;

b) synchronous machines; and c) inverters and static power converters. 5.3 Energy source 5.3.1 Fossil fuel Generation derived from primary fuels such as oil, natural gas, diesel and coal. 5.3.2 Renewable energy The renewable resources such as listed below but not limited to the following: a) solar photovoltaic; b) hydropower c) biogas including landfill gas, palm oil mill effluent; d) biomass; e) wind power; and f) geothermal. 5.3.3 Energy storage technologies Energy storage technologies can help smooth the demand for electrical generation and thereby improve efficiency and reliability. This includes: a) batteries; b) fuel cells; and c) superconducting magnetic energy storage.

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5.4 Cogeneration 5.4.1 Cogeneration or more popularly known as combine heat and power (CHP) refers to the sequential generation of two or more different forms of useful energy (e.g. thermal and electrical) from the same amount of primary fuel input as shown in Figure 2.

Figure 2. Cogeneration 5.5 Distributed generation capacity 5.5.1 The limit to the DG generation capacity is to suit the system adequacy and stability. The capacity will also dictate the type of control and protection system. 5.5.2 The DG generation capacity is limited to 30 MW in Peninsular Malaysia and Sabah, and not exceeding 10 MW in Sarawak. 6 Connection criteria 6.1 General The distribution licensee upon receipt of a request for connection to distribution network shall perform the power system study to assess the impact of the generation on the distribution network and if necessary advise the distributed generator to contain the impact of the generation in compliance with the limits and standards specified in planning and operating criteria in the relevant rules, codes and guidelines.

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6.2 Power system study The scope of study and assessment includes the following: 6.2.1 Assessment of the technical impact of interconnection of DG plant in terms of: a) DG location; b) DG type; c) DG capacity; d) voltage profile; e) system adequacy; f) system losses; g) fault level; and h) existing operational constraints. 6.2.2 Design of interface point or interconnection schemes and the necessary upgrading works to comply with the relevant limits and standards. 6.3 System configuration Two types of connections of DG installation to distribution network include: 6.3.1 Direct connection Direct connection means the connection of a DG installation directly to a distribution system. 6.3.2 Indirect connection Indirect connection means the connection of a DG installation indirectly through the internal distribution system of the consumer. 6.4 Criteria of system assessment

6.4.1 Guideline for system assessment The guideline of the system assessment as shown in Table 1.

Table 1. Guideline for system assessment

No Capacity Voltage level System study requirement 1 Up to 12 kW 230 V System assessment as required 2 Up to 425 kW 400 V or 11 kV Connection confirmation check (CCC)/

Power system study 3 Up to 10 MW 11 kV to 33 kV Power system study 4 Up to 30 MW 33 kV Power system study

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NOTE. The above table serves as a guide and confirmation with the distribution licensee is required. 6.4.2 System requirements a) voltage;

Table 2a. Steady-state voltage limit, normal condition (Peninsular Malaysia & Sabah)

No Nominal voltage (kV) Limits 1 33 ± 5 % 2 22 ± 5 % 3 11 ± 5 % 4 0.4 + 10 % and – 6 %

Table 2b. Steady-state voltage limit, normal operating condition (Sarawak)

No Nominal voltage (kV) Limits 1 33 ± 5 % 2 11 ± 5 % 3 0.415 + 5 % and - 10 %

Table 3a. Steady-state voltage limit, contingency condition

(Peninsular Malaysia & Sabah)

No Nominal voltage (kV) Limits 1 33 ± 10 % 2 22 ± 10 % 3 11 ± 10 % 4 0.4 ± 10 %

Table 3b. Steady-state voltage limit, contingency condition (Sarawak)

No Nominal voltage (kV) Limits 1 33 ± 10 % 2 11 ± 10 % 3 0.415 ± 10 %

b) frequency; and The system frequency to be maintained at 50 Hz ± 1 %. c) DG short circuit current contribution;

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The distribution network is planned such that the maximum sub-transient three phase symmetrical short circuit fault levels are not greater than 90 % of the design short circuit break and make capacity of switchgear connected to the distribution network and within 90 % of the short time current rating of equipment connected to the distribution network. The DG short circuit current contribution shall comply with the above requirement. 6.5 Quality of supply requirements 6.5.1 The design of DG criteria are as follows: a) to control voltage within limits (refer to 6.4.2,a); b) to control frequency within limits (refer to 6.4.2, b); c) to ensure proper voltage and reactive power control within the distribution system, DGs

will be required to have the capability of both voltage control and power factor control. The final power factor requirement shall be determined during power system study by the distribution licensee; and

d) compliance to EMC requirements (refer to Table 4a and 4b). 6.5.2 The DG shall also be designed such that the quality of supply of the distribution network complies with the following requirements.

Table 4a. Power quality standards and guidelines (Peninsular Malaysia & Sabah) No Quality of power

variation Measurement Maximum permissible values

1 Distortion Total Harmonic Distortion Voltage (THDV) %

5 % at 400/240 V 6.5% at > 400 V

2 Flicker Pst Plt

Voltage level > 35 kV o Pst=0.8 o Plt= 0.6

Voltage level < 35 kV o Pst=0.9 o Plt= 0.7

3 Momentary voltage change limits

V % 1 % - series voltage change that may lead to flickering problems.

3 % - single voltage change due to

switching on or off of any loads. 4 Voltage unbalance Negative Phase

Sequence Voltage %

i) The maximum negative phase sequence component of the phase voltage on the distribution system (voltage unbalance) shall remain below 1 % unless abnormal conditions prevail.

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Table 4a. Power quality standards and guidelines (Peninsular Malaysia & Sabah) (continued)

ii) The maximum negative phase

sequence component of the phase voltage on the distribution system (voltage unbalance) shall remain below 1 % unless abnormal conditions prevail.

iii) Infrequent short duration peaks with a maximum value of 2 % are permitted for voltage unbalance, subject to the prior agreement of the distributor under the connection agreement. The distributor will only agree following a specific assessment of the impact of these levels on the distributor’s other users’ equipment.

iii) At the terminals of a user’s installation

the unbalance voltage shall not exceed 1 % for 5 occasions within any 30 minute time period.

5 Voltage sag % Remaining Voltage

50 % Sag (up to 200 ms) 70 % Sag (up to 500 ms) 80 % Sag (up to 1000 ms)

Table 4b. Power quality standards and guidelines (Sarawak)

No Quality of power

variation Measurement Maximum permissible values

1 Voltage distortion THD % 1 % at 33 kV and below 5 % at 415/240 V 4 % at 11 kV 3 % at 33 kV

2 Flicker Pst, Plt

0.9 at 33 kV and below 0.7 at 33 kV and below

3 Momentary voltage change

Relative steady state voltage change dc

4 % for manual switching 3 % for other 1 % for renewable

4 Voltage unbalance 100 x (maximum voltage deviation from average voltage)/(average voltage)

1 %

5 Voltage dip Voltage dip % 50 % dip (up to 200 ms) 30 % dip (up to 500 ms) 20 % dip (up to 1000 ms)

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6.5.3 Additionally, power quality for the DG units shall comply with the distribution licensee requirements. 7 Protection requirements 7.1 The protection requirements at interconnection feeder shall follow the requirements by the distribution licensee. Additional scheme requirements shall be as follows:

Table 5a. Protection requirements (Peninsular Malaysia & Sabah)

Protection interfacing

requirements Direct Indirect

LV MV LV MV a) unit protection (current

differential) √ √

b) over current earth fault (OCEF)/non directional OCEF

√ √

c) reverse power relay √ d) interlocking scheme √ e) anti-islanding scheme √ √ √ √ f) power limiting device √ √

Table 5b. Protection requirements (Sarawak)

Protection interfacing requirements

Direct Indirect

LV MV LV MV a) unit protection (current

differential) √ √

b) over current earth fault (OCEF)/non directional OCEF

√ √ √ √

c) reverse power relay √ √

d) interlocking scheme √ √ √ √

e) anti-islanding scheme √ √ √ √

f) inter tripping scheme √ √ √ √ 7.2 Interlocking and inter tripping scheme For interconnection cable between distribution licensee and developer, the protection scheme includes unit protection with direct fiber optic connection, OCEF and Reverse Power Relay. Interlocking facilities shall operate in the following manner, referring to the Figure 3below: a) A open- B to open; b) A open position - B cannot close;

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c) B close position - A remains open and cannot be closed; and d) Earth switch B ON - A cannot close.

Figure 3. Interlocking, inter tripping & synchronization of LV and MV system 8 Operational requirements 8.1 Anti-islanding detection at PCC (on the DG side) The minimal anti-islanding detection requirements are as follows: a) inverter based generation:

Under/over voltage detection, under/over frequency detection and an additional active or passive anti-islanding techniques

b) other types of generation:

Under/over voltage detection, under/over frequency detection, rate of change of frequency (ROCOF) and voltage vector shift

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8.2 Voltage disturbance The DG should sense abnormal voltage and respond according to the distribution licensee practices. 8.3 Frequency disturbance The under frequency and over frequency levels and the corresponding DG trip time shall be as follows: a) when the utility frequency is outside the nominal 50 Hz value by ±1 %; b) trip time shall be within 0.20 s; and c) applicable for both LV and MV interconnection. 8.4 Synchronisation 8.4.1 Synchronisation is an act of matching, within allowable limits, the following required DG parameters with the distribution licensee supply parameters as in Table 6. 8.4.2 Synchronisation devices are to be provided and maintained by DG. During operation, synchronisation is to be done on DG side by matching distribution licensee grid parameters as mentioned above.

Table 6. Synchronisation parameter limits Region Rating of

generator (kVA) Frequency

difference (Hz) Voltage

magnitude difference (%)

Voltage angle difference (Degrees)

Peninsular Malaysia & Sabah

< 30 000 < 0.2 < 10 < 10

Sarawak <1500 0.2 5 15 >1500 0.1 3 10

8.5 DG reconnection 8.5.1 After the DG tripping, no DG reconnection shall take place until the distribution licensee voltage and frequency are maintained within the limits of the distribution licensee practices. 8.5.2 The DG stabilisation period starts once the DG detects the voltage and frequency to be within the normal range. 8.6 Transformer vector group The interface transformer between DG plant and distribution network shall not interfere with the distribution licensee protection scheme.

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8.7 Metering 8.7.1 All energy meters used for measuring the export of electricity shall follow distribution licensee specifications. The meter shall be installed at a location in view of ease of accessibility to distribution licensee personnel. 8.7.2 Details of metering requirements to be referred to the distribution licensee specifications. 9 SCADA system requirements 9.1 DG plant interface/connection point, where required, shallbe equipped with the following SCADA facilities: a) remote terminal units (RTU) complete with Marshalling cubicle; b) communication system from DG plant to distribution licenseecontrol centre; and c) remote switching facilities. 9.2 The RTU shall monitor the following: a) communication status; b) requency (Hz); c) voltage (Volts); d) current (Amps); e) real power energy flow (kW or MW); f) reactive power energy flow (kVAR or MVAr); g) energy meters; h) breaker, earth and isolatorstatus; i) relay indications, where appropriate; and j) DC systems. 10 Interconnection system testing Tests to prove the following items shall be carried out in the commissioning process: a) anti-islanding; b) interlocking/inter tripping scheme; c) protection equipment;

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d) power quality measurement; e) SCADA equipment; and f) equipment functional tests. 11 Safety 11.1 The safety coordination procedures to be adopted by the DG and distribution licensee for work or testing at the interface between the DG and distribution licensee shall include the following prerequisites: a) At each connection point between the DG and distribution licensee, the boundaries of

ownership and operational responsibilities shall be clearly defined; b) The DG and distribution licensee shall provide each other with the operating diagrams of

their respective side of the connection point; c) The DG and distribution licensee shall provide each other with the names of persons

responsible for operation the DG and distribution licensee systems and communication protocol shall be documented; and

d) The DG and distribution licensee shall exchange information on safety rules and/or safety

instructions as practiced in their respective systems. 11.2 All switching and other operations shall be carried out according to the procedures as defined in the distribution licenseesafety rules, which shall include but not limited to the following: a) communication and coordination; b) isolation; c) earthing; d) recording; e) esting; f) commissioning; g) documentation; and h) re-energising

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Bibliography [1] MS 1837, Installation of grid-connected photovoltaic (PV) systems [2] MS 1555, Electromagnetic compatibility (EMC) - Limits - Limitation of emission of

harmonic currents in low-voltage power supply systems for equipment with rated current greater than 16A

[3] MS IEC 60038, IEC standard voltages [4] MS 60725, Consideration of reference impedances and public supply network

impedances for use in determining disturbance characteristics of electrical equipment having a rated current ≤ 75A per phase

[5] MS IEC 61000-3-2, Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for

harmonic current emissions (equipment input current <= 16 A per phase) [6] MS IEC 61000-3-3, Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation

of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection

[7] MS IEC 61000-3-11, Electromagnetic compatibility (EMC) - Part 3-11: Limits -

Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems - equipment with rated current ≤ 75 A and subject to conditional connection

[8] MS IEC 61000-3-12, Electromagnetic compatibility (EMC) - Part 3-12: Limits - Limits for

harmonic currents produced by equipment connected to public low-voltage systems with input current > 16 A and less than and ≤ 75 A per phase

[9] MS IEC 61727, Photovoltaic systems - Characteristics of the utility interface [10] IEC 61000-2-2, Electromagnetic compatibility (EMC) - Part 2-2: Environment -

Compatibility levels for low-frequency conducted disturbances and signaling in public low-voltage power supply systems

[11] IEC 61000-2-4, Electromagnetic compatibility (EMC) - Part 2-4: Environment -

Compatibility levels in industrial plants for low-frequency conducted disturbances [12] IEC 61000-2-8, Electromagnetic compatibility (EMC) - Part 2-8: Environment - Voltage

dips and short interruptions on public electric power supply systems with statistical measurement results

[13] IEC 61000-2-14, Electromagnetic compatibility (EMC) - Part 2-14: Environment - Over

voltages on public electricity distribution networks [14] IEC/TS 61000-3-5, Limitation of voltage fluctuations and flicker in low-voltage power

supply systems for equipment with rated current greater than 16 A

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[15] IEC/TR 61000-3-6, Electromagnetic compatibility (EMC) - Part 3-6: Limits - Assessment

of emission limits for the connection of distorting installations to MV, HV and EHV power systems

[16] IEC/TR 61000-3-7, Electromagnetic compatibility (EMC) - Part 3-7: Limits - Assessment

of emission limits for the connection of fluctuating installations to MV, HV and EHV power systems

[17] IEC 61000-4-7, Electromagnetic compatibility (EMC) - Part 4-7: Testing and

measurement techniques - General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto

[18] IEC 61000-4-11, Electromagnetic compatibility (EMC) - Part 4-11: Testing and

measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests

[19] IEC 61000-4-13, Electromagnetic compatibility (EMC) - Part 4-13: Testing and

measurement techniques - Harmonics and interharmonics including mains signalling at a.c. power port, low frequency immunity tests

[20] IEC 61000-4-28, Electromagnetic compatibility (EMC) - Part 4-28: Testing and

measurement techniques - Variation of power frequency, immunity test [21] IEC 61000-4-30, Electromagnetic compatibility (EMC) - Part 4-30: Testing and

measurement techniques - Power quality measurement methods [22] IEC 61000-4-34, Electromagnetic compatibility (EMC) - Part 4-34: Testing and

measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current more than 16 A per phase

[23] IEC/TS 62578, Power electronics systems and equipment - Operation and

characteristics of active in feed converter application [24] NEMA MG 1-1998, (Revision 3, 2002) [25] SEMI F47 [26] Technical Guidebook for the Connection of Generation to Distribution Network [27] TNB Technical Guidebook on Grid-interconnection of Photovoltaic Power Generation

System to LV and MV Networks [28] The Malaysian Distribution Code [29] Renewable Energy Act 2011 [30] Renewable Energy (Technical and Operational Requirements) Rules

2011/Amendments (2014)

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© STANDARDS MALAYSIA 2015 - All rights reserved

Acknowledgement Members of Technical Committee on Renewable Energies Dato' Dr Ir Ali Askar Sher Mohamad (Chairman)

Sustainable Energy Development Authority Malaysia

Ms Nor Iratul Munirah Mazani (Secretary) SIRIM Berhad Ir Wong Kian Lon Association of Consulting Engineers Malaysia Mr Tuan Azeroz Tuan Yaakub Bank Pembangunan Malaysia Berhad Mr Mohd Famey Yusoff/ Mr Amir Afiq Abdullah

Department of Environment

Mr Abdul Halim Ahmad Felda Palm Industries Sdn Bhd Dr Wan Asma Ibrahim Forest Research Institute Malaysia Mr Abdul Nasir Abdul Aziz/ Mr Muhammad Fadly Ahmad Usul

Jabatan Pengurusan Sisa Pepejal Negara

Ms Jesslyn Pek Yen Lee/ Mr Foon Weng Lian

Malaysian Association of Standard Users

Mr Ahmad Shadzli Abdul Wahad/ Mr Chin Soo Mau

Malaysian Photovoltaic Industry Association

Ir Goh Chin Chai Sarawak Energy Berhad Ms Najihah Mohd Ramli Suruhanjaya Tenaga Dr Ahmad Jaafar Abd Hami/ Mr Khairadi Azhan Che Rais

Tenaga Nasional Berhad

Ir Chong Chew Fan/ Engr Yau Chau Fong

The Institution of Engineers, Malaysia

Hajjah Roslin Mohd Shafie/ Mr Muhammad Nazry Chik

TNB Research Sdn Bhd

Prof Ir Dr Abd Halim Shamsuddin/ Dr Adlansyah Abd Rahman

Universiti Tenaga Nasional

Members of Working Group on Connection of Renewable Energy Generation to Distribution Network Ir Mah Soo (Chairman) The Institution of Engineers, Malaysia Ms Nor Iratul Munirah Mazani (Secretary) SIRIM Berhad Ir Dr Zahrul Faizi Hussein Malakoff Utilities Sdn Bhd (co-opted) Mr Chan Seng Yu/Mr Tan Chee Ming Ministry of Public Utilities, Sarawak Ms Fitriana Ahmad/Ms Retty Felicia Simok Sabah Electricity Sdn Bhd Mr Goh Wei Chiun/ Mr Guan Klien Seng Sarawak Energy Berhad Ms Nurhafiza Mohamed Hasan/ Mr Mohd Taupik Md Taib

Suruhanjaya Tenaga

Ir Mohd Zamri Laton/Mr Koh Keng Sen Sustainable Energy Development Authority Malaysia

Mr Saharuddin Sulaiman Tenaga Nasional Berhad (Asset Management Department, Planning)

Ir Mohd Shukri Ismail/ Mr Mohd Shafiee AlMunir

Tenaga Nasional Berhad (Asset Management Department, Protection)

Mr Khairadi Azhan Che Rais/ Dr Amissa Mohd Shaidi Arifin

Tenaga Nasional Berhad (Sustainable Energy Development Section)

Ir Francis Xavier Jacob/Ir Yau Chau Fong The Institution of Engineers, Malaysia Ir Khirul Nizam Shamsudin TNB Energy Services Sdn Bhd Prof Dr Ir Vigna Kumaran Universiti Tenaga Nasional