PFC - Power Factor CorrectionPowerCOM STATCOM SolutionsLV Filter & Capacitor BanksPower Quality Engineering

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Power Quality ApplicationsSteel & Iron FactoriesRolling MilesMining IndustryPetro-ChemicalPaper IndustryAutomotive FacilitiesCement PlantsRailwayand All Heavy Industries

Energy Quality, Harmonics and Compensation• Preservation/maintenance of the nominal network voltage level and

frequency within target limits• Perfect maintenance of the sinus wave form at 50 (or 60 Hz) frequencies • Preservation of momentary, temporary or permanent rises, breakdowns,

interruptions, vibrations, harmonic and other disruptive factors within defined limit values

• Maintenance of produced, transmitted, consumed and released powers at a maximum efficiency and equivalence

from production to transmission, transmission to distribution, from distribution to the end user at all points of the system and at any time in the electric energy systems can typically be described as energy quality, and the assurance of quality requires many factors, applications and systems.MST Elektroteknik is your reliable solution partner in all processes from the first to the last point of energy production, from measurement and analysis to application and solutions with its expertise and technical know-how in operations and all industrial processes.

Quality cannot be determined, classified, compared, interpreted and/or solved without measurement and/or analysis. Solutions and applications also require measurement and/or analysis.MST Elektroteknik implements fast, efficient and economic solutions using its 20 years of engineering and field expertise in different operational and industrial facilities starting both from the project phase in designing solutions aimed at energy quality and the measurement, analysis and solution of energy quality problems of already running operations and facilities.As MST Elektroteknik, our systems and installations for energy quality can be classified in 2 main parts: Low and High voltage;

Our solutions and analyses installed in low voltages below 1kV;• Conventional standard compensation systems and solutions• Solutions with multi-staged automatic and/or stationary type shunt

reactor systems • Low adjustable harmonic filter compensation systems and solutions• Low adjustable harmonic filter electronic switching (thyristor)

compensation systems and solutions• Fully adjustable local and central type harmonic filter systems and

solutions• Fully adjustable passive filter systems and solutions (3rd, 5th, 7th

harmonic fully adjustable filters)• Neutral busbar/line filtering systems and solutions• Parallel Active Filter systems and solutions

• Solutions with IGBT-based harmonic and bidirectional compensation systems

• Serial shock bobbins for loads including motors, drivers etc. • Insulated energy solution and systems in risky environments for

prevision devices and equipment • Our solutions and analyses installed in medium and high voltages over

1kV;• Open type or metal cabin type stationary type capacitor banks with

regular disconnectors and/or fuse disconnector• Open switchgear type low adjustable passive harmonic filter or current

limiting reactor stationary type capacitor bank systems• Open switchgear type low adjustable passive harmonic filter or current

limiting reactor automatic capacitor bank systems• Breaker or contactor low adjustable passive filter or current limiting

reactor capacitor bank systems in metal cabin• Fully adjustable harmonic filtering focused capacitor bank systems (2nd,

3rd… etc. filter systems)• Energy Electronics based STATCOM and SVC systems • Shunt Reactor Systems and special energy transformer solutions• Fully automatic, graded or stationary, filter or non-filter, custom design

compensation and filter systems and solutions designed to operate in external settings, high temperature and heavy conditions, and acclimatized in iron sheet or concrete kiosk.

Power Quality Record and Analysis

Energy consumers becoming “free consumers” and the creation of a energy exchange resulted in the need for questioning the quality of power, the product to be exchanged in this market. We offer custom solutions for measuring, monitoring, analyzing and reporting the quality of energy from the production points up to the consumption points.

• Energy quality record and analysis functions• Precise collection and recording of energy values (Quality Record)• Monitoring energy quality • Reporting energy quality• Custom functions

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PowerCOMFlexible STATCOM Solution for Energy and Industry Markets

• Active circuit breakers for active front end (AFE) functionality• Highly dynamic control properties• Configurable reactive power characteristics• Individual customisable with scalable, modular performance levels• The easiest operation with internally developed service software and

user-friendly interface design• Support of the common field bus systems (CAN, PROFIBUS, ETHERCAT

and others), binary interfaces also available• Adjustable high dynamics of reactive power compensation• Independent adjustment to the network requirements by an intelligent

electronic control system (drive control unit)• Active Harmonic Filtering

POWER QUALITY IMPROVES by PowerCOM Statcom Solution

PowerCOM improves quality in all types of electrical networks. These meet a variety of requirements, such as optimising the mains voltage as well as compensating reactive power transfer, harmonics, flicker, sag and swells.

Ensure Stable GridsHigh energy quality, reduced energy costs and stabilisation of the grids are just some of the new requirements that electricity consumers nowadays have.Industrial applications require a stable grid for safe operation. In particular, consumers who do very precise work must be protected against mains fluctuations or outages. On the other hand, they may not burden the grid themselves, e.g. due to reactive current outputs.

With the use of regulated PowerCOM statcom Solutions, the grid operator’s grid connection conditions can completely be fulfilled. At the same time, the efficient, reliable operation of machinery and equipment is assured.

Overview• Active grid compensation to ensure quality in production processes• Measures to support the power system• Active harmonic compensation for best possible grid quality• Individually customisable with scalable, modular performance levels• Flicker compensation against negative feedback in the network• Reduction of the total harmonic distortion factor (THDi)• Reactive power management for the entire system with the adjustable power factor cos φ• Reactive power deployment at LVRT, symmetric or asymmetric

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Customer Benefits

Optimised grid quality and reduced burden on operating equipment through customer-specific compensation systems

Stabilisation and support of the public or industrial grids through active harmonic management

Reduced energy costs through compliance with the contractually agreed performance factor

Reduction of losses in transmission and distribution grids as well as in industrial plants

We build and test every system at PowerTech:electrically, thermally, mechanically and also with regard to the electro-magnetic compatibility. PowerTech also operates a private, state-of-the-art test field for load testing with air or liquid-cooled systems and for the simulation of artificial grids.

PowerCOM can be used as permanent or temporary solutions. For temporary use, the is only active in the event of a line-side voltage drop when it initiaties the required filtering. For line-side reference conditions, they remain in stand-by operation.

PowerCOM solutions meet divers technical and mechanical requirements. Their modular design guarantees a high degree of flexibility and an excellent ability to integrate in control technology and communication systems.

PowerCOM compensate for harmonics throughout the network - and ensure the supply of consumers with electricity at reference conditions.

Electronic control systems1

Power module with air cooling2

2

2

2

1

Rated voltage IGBT-based four-quadrant technology voltage link

Rated voltage range 3 AC 380-690 V

Line frequency 50 Hz/60 Hz

Rated power range 300 kVAr up to 6 000 kVAr

Cooling Forced air cooling, optional liquid cooling

Response times < 1 ms in online mode

InterfacesProfibus DP (RS 485), Ethernet, CAN, USBinterface, digital in/out, potential-freeindication contacts

Protection rating IP54

Certificates CE

Block diagram

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Main Differences Capacitor Banks with Contactor Capacitor Banks with Thyristor

Respond time- SpeedUsually, It has 30-60 seconds delay in working because of the capacitors discharge.

It has 20-40 ms delay in working without waiting discharge time. They works suitable for needed power in real time compensation.

Distortion of Over Current and Transient Voltage

During capacitor steps switched on/ off, frequently it can be occurred inrush current and transient voltage distortion.

During capacitor steps switched on/off, system works soft and without any impulse. So there won’t be any inrush current and transient voltage distortion.

Noise LevelDuring mechanic contactor switched on/off it has mechanical noise. Time to time it can be appeared noise because of arcs and over current.

This system work without mechanical switching. As a result system works in a silent. Capacitor steps are operated continuously and unlimited.

Number of Switching With mechanical contactor switching is limited. In theory it has unlimited switching.

Application AreaIt is used in facilities which has less and slow load changes. And these changes are unnecessary according to the total loading.

It is used in facilities which has rapidly varying load. Also it is used in facilities which need fast compensation system.

• These compensation systems are special because of the equipment that uses for switching. In this compensation system capacitors are switched on and off with static switching which contains thyristor- diode packets instead of contactors.

• While switching (ON/OFF) there are no any transient situation, over current and voltage transient.

• Thanks to milliseconds respond time in low voltage, it can be realized real time reactive power compensation.

• It contains harmonic filter reactors. It can work without effected by harmonic loadings and inrush.

• It eliminates possible serial and parallel resonance through harmonic filtering.

• In all kind of facilities and process they can be used in 50Hz and 60Hz.• It continuously keeps power factor in level 1, that’s why it gives excellent

results.• It provides long life with physical strengths and withstand values 20% over

voltage and 50% over current.• Compensation system is manufactured and tested accordance with IEC

standards. These systems are economic and practical because it provides easy installation, manpower and time saving, no additional material, high level protection against touching, electrical and physical strength. It also provides increase of power and revision about system.

• Basic structure of SCS Series compensation system is C7s type modular compensation rack units which have state switch and harmonic filter.

• Modular compensation units are mounted consecutively on withdrawable or racks.

• Using the modular rack units allows operator to add and modify the steps in capacitor banks. Thanks to this when a facility come bigger or smaller than before, operation in capacitor banks such as step changes, increase of power will be completed easily and faster.

• In the system capacitors are switching electromechanically by contactors.• Serial harmonic filter reactors limits distortion of transient situations,

transient voltage and over current, that occurs while switching. Thanks to this it provides operation safety.

• These systems provide reactive power compensation in low voltage. They are used in facilities and systems which have slow load changes. In addition to this they are used in systems which do not need respond time in millisecond levels.

• Contains harmonic filter reactor. The system can work without harmonic loadings and inrush.

• It eliminates possible serial and parallel resonance through harmonic filtering.

• In all kind of facilities and process they can be used in 50Hz and 60Hz networks.

• It continuously keeps power factor in level 1.• It provides long life with physical strengths and withstand values 20% over

voltage and 50% over current.• Compensation system is manufactured and tested according to IEC

standards. • These systems are economic and practical because it provides easy

installation, manpower and time saving, no additional material, high level protection against touching, electrical and physical strength.

• Basic structure of CS Series compensation system is C7s type modular compensation rack units which has state switch and harmonic filter.

• Using the modular rack units allows to add and modify the steps in capacitor banks.

• Modular structure allows easy expansion and maintenance.

Main features of CS Series compensation systems are as below;Basic features of SCS Series compensation systems are in the below;

SCS Series Capacitor Banks with Harmonic Filter CS Series Contactor Switched Capacitor Banks with Harmonic Filter

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Deşarj direnciDischarge ResistorMetal kutu

Metal Enclosure

İnorganik yanmaz zehirsiz granüllerInert and non-toxic granules

Montaj delikleriHoles for fixation

Güç kablolarıPower Cables

Kablo bağlantılarıWire connections

Dahili sigortaFuse link

Isı ile sertleşen reçineThermo-setting resin

Kapasitör ElementiCapacitor Element

Plastik kapPlastic case

Metalize polipropilen filmIn-house metallised polypropylene film

MSC Series LV Capacitor Compensation Solutions for Railway Systems

• MSC Series Low Voltage Power Capacitors consist of metalized polypropylene film bobbins which are placed in metal casing with different connection techniques such as series and parallel.

• Metalized polypropylene film is shortly named element. Elements are totally dry units with no impregnation or insulation liquid.

• MCS capacitors has high mechanical and electrical resistance thanks to metalized polypropylene film and production technique of element. Elements receive a treatment in vacuumed and dry environment. In addition thermosetting resin is used in element prodcution. Bobbins are coated with resin in a vacuumed and dry environment. So in resin it doesn’t get any air and humidity because of expansion and sweating.

• Elements can be consisted as series and parallel groups in casing. MSC Series Power Capacitors are manufactured according to thermic calculation beside of electrical and mechanical calculation. Also designs are realized according to the thermal cooling because of the element and temperature change in casing.

• The metal box for elements is filled with inorganic and fire proof granules.

There are operations and/or systems affected from high level capacitive reactive energy and extreme compensation even though they install any compensation systems and/or capacitors except for operations and facilities where reactive energy compensation systems are installed with traditional methods using ca-pacitors. Railway applications that comprising kilometers of underground cabling (particularly light rail, tram and electrical bus-trambus systems) are the most important ones.

Such transportation systems which establish energy transmission/connection between the distribution/service substations with underground medium voltage cables and where the lines are very long may exposed to highly extreme high capacitive reactive impact.

When the MV cables are energized, it is enough to create capacitive reactive power. In railway operations, capacitive reactive impact will be permanent while underground cables are energized.

However, loads including transformer, UPS and similar loads within the operation also have reactive impacts when they work under low load. Particularly the inductive reactive energy caused by energy inverters, potential capacitive reactive energy caused by UPS’s working under low loads, and potential capacitive or inductive reactive energy caused by ventilation and lighting systems are some of the most important operational factors that affect total reactive energy and its distribution within the operation.

The reactive energy flow of a railway operation may vary depending on the capacitive reactive impact caused by underground cables and how much the inductive or capacitive reactive energy of other stationary loads (transformer, UPS etc.) throughout the operation compensate or increase one another. The-refore, the lowest inductive reactive energy compensation system that will be generally applied and taken as the basis can be calculated based on the reactive energy flow in the facility’s idle operation criteria. However, in an already-ope-rating railway system application, reactive energy levels and flows can continually vary during the day depending on the vehicle traffic.

So, it should be considered that the capacitive reactive of the lines can be auto-matically compensated at varying rates and levels depending on the loading levels in the operation. As a result, the projected inductive and/or capacitive compensation systems have to be designed so that they will automatically reply the loading conditions varying throughout the operational period.

MST Elektroteknik, thanks to years of experience and expertise, runs the AC main energy and harmonic flow simulations (as well as short circuit analyses and relay selectivity) of railway operations by licensed developed softwares. The below criterias are taken into consideration in computer simulations and analyses carried out on the single line of the operation are considered first to determine the directions and levels of energy flow.• Different loading and working conditions of the operation, • Feeding and billing of the facility from one or more points within different

scenarios,• Periodically deactivating some of the energy sources,• Emergency scenarios etc. provided by the operator

These granules do not prevent thermal cooling. Also they extinguish flames in case of a possible defect.

• In production of MSC capacitors there are no harmful gas and materials. In this regard, they provide all the international standards and requirements. End of their life time, they are subject to recycling.

• External discharge resistors are used as standard in MSC capacitors. Discharge resistors provide voltage reduction between the capacitor terminals when power failure occurs.

• MSC capacitors have perfect current and voltage withstands, as a result they have long life. They can be used in all kind of compensation and filtering applications with high performance and safety. They show stability of high capacity for many years with high quality metalized polypropylene film and internal fuse. And these metalized polypropylene films have self-healing ability.

• Thanks to MSC capacitors low dielectric losses, they provide compensation and filter needs of facilities and they keep active power losses in minimum level.

By using computer simulations carried out by various scenarios and working conditions, the system designs ensure inductive/capacitive compensation of the system under all conditions and the total power, distribution, installation criteria etc. of such systems in the operation are determined.

MST Elektroteknik, as your professional solution partner with energy flow charr analysis, harmonic analysis, short circuit analysis, secondary protection relay selectivity analyses and product/system solutions aimed at all such systems in railway operations projects in detail and applies the automatic inductive and capacitive compensation systems in line with working conditions requirements.

Product Code (MSC xxxx)

Nominal Power (kVAr)

Nominal Voltage (V)

Dimension (mm)

MSC 8.33k-48 8,33 480 340 x 70 x 220

MSC 16.66k-48 16,66 480 340 x 70 x 220

MSC 33.3k-48 33,3 480 340 x 70 x 220

MSC 33.3k-96 33,3 960 340 x 70 x 220

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HV Enclosed Capacitor Banks HV Enclosed Capacitor Banks

Enclosed capacitor banks designed by MST are used for power factor correction, voltage support, harmonics suppression and to maximize network capacity in industrial applications and distributions systems.Capacitor Banks are constructed in steel-plate or galvanized cabinets according the requirements of the customer specifications.Standard construction of the Capacitor Banks includes MST POWER CAPACITORS (three-phase units or single-phase units in star or double star connection), According to the requirement, it is possible to include also inrush current reactors or other protection and measuring devices (unbalance relay, de-tuned reactor, current and voltage measure transformer etc.)In case of some complex technical solutions, it is possible to offer automatic capacitor bank equipped with regulator and vacuum or SF6 contactors etc.

Product Features• Modular, compact and robust design optimized for easy future expansion

of the system, facilitating transport, storage and installation.• Galvanized steel enclosure available for indoor and outdoor installation,

with different ventilations, with different ventilations systems. Protection class ranges from IP30 to IP54.

• Design and testing complies with the requirements of the latest edition of relevant standards and the specific technical requirements set by the customers.

• Use of simplified design and proven components ensures high reliability and low maintenance costs.

• Optimized to give a low environmental load by using recyclable materials.• The banks are are supplied as fully assembled units, factory tested and

ready for connection.

Types of Banks1.Fixed Capacitor BanksThese banks connected on continuous mode directly to the loads and provides a fixed quantity of reactive power at all times.These banks can be permanently connected to the loads or they can be switched by means of devices located in customer’s switchgear.

2.Fixed Capacitor Banks with switching deviceThese banks is basically the same as the fixed banks. But they are fitted with a switching device (contactor or circuit breaker), that allows them to be connected and disconnected from the network at any time.

3.Automatic Capacitor BanksFormed by different steps, each one composed of capacitor units, reactors and switching devices, mounted in a common enclosure. They can improve the power factor by providing the required amount of reactive power under varying load conditions.The operation, control and monitoring of the different steps is carried out by a microprocessor based controller according to the need for reactive power.

Configuration of BanksCapacitor Banks are usually formed by an incoming cubicle where the main circuit breaker, earthing switch and control and protection relays are placed. There are one or more step cubicles where capacitors, reactors, fuses and swit-ching devices are located. Banks can be manufactured with various options and configurations to meet virtually all customer needs.

Protection Devices for Typical Systems• Capacitor units

• Equipped with internal fuses or HV-HRC fuses • Equipped with discharging resistors or with quick discharge

transformers.• Unbalance current protection• Overcurrent and earth-fault protection• Over and undervoltage protection• Internal temperature protection• Earthing switches and protection locks.

Switching DevicesVacuum or SF6 contactors and circuit breakers.

ReactorsCapacitor Banks can be applied with air core or iron core damping or de-tuned (low pass) filter reactors, depending on the harmonic level of the network and the number of steps needed.

Capacitor Design• Capacitor Banks with one-phase capacitors units connected in star or

double star.• Capacitor Banks with three-phases capacitor units connected in star.

C1509-PQ-EN

MS Italy HeadquarterMicroelettrica Scientifica S.p.A.-20090 Buccinasco (MI)-Via Lucania 2-ItalyTel.: +39 02 575731 E-mail: info@microelettica.com www.microelettrica.com

MST Elektroteknik HeadquarterMST Elektroteknik San. ve Tic. Ltd. Şti [Microelettrica Scientifica Türkiye]Bayraktar Bulvarı Beyit Sokak No.7 Şerifali Ümraniye 34775 İstanbulTel: +90 216 314 50 15 mst@microelettrica.com www.mstelektroteknik.com

MST Elektroteknik Free Zone BranchMST Elektroteknik İstanbul Endüstri ve Ticaret Serbest Bölge ŞubesiAydınlı Sb Mahallesi Matraş Cad. No:1 Desbaş 3 No:18/A-1 Tuzla İstanbulTel: +90 216 314 50 15 mst@microelettrica.com www.mstelektroteknik.com