MCAGCC 29 Palms Microgrid

MCAGCC 29 Palms Energy 2014/2015

· Base Power Basics · Power production

– 16.4 MW 2 Cogeneration plants– 8 MW PV systems on line by end FY16– 24.4 MW Total production capacity – Winter peak 15 MW – Summer 26 MW – Working to raise minimum import settings

· Energy Security– Contingency plans for loss of power and water– Electrical grid redundancy– Load reduction capabilities– Critical buildings and infrastructure backup

generators– Cogen plants , PV power production, Grid

upgrades with switches and substation communication

– Microgrid operations central control strategy– EMCS DDC building monitor and control– Leatherneck substation 115KV line upgrade

allows for multiple feeds and redundancy– 7 day backup fuel supply– **Cyber Security **

October

November

December

January

February

March

AprilMay June

July

August

Septem

ber -

2,000,000

4,000,000

6,000,000

8,000,000

10,000,000

12,000,000

14,000,000

KWH Used KWH Cogen

KWH PV

122,204,873

77,986,408

4,945,583

FY 15 Actuals/YrTotal Generation77,449,312 Kwh

Infrastructure

· Public Works Network (PWN)– Fiber communications system

– Designed, Installed and Maintained by Public Works Division

– PWD IT and security requirements– Monitor/Control/Metering

– GE Microgrid controller– 60 motorized switches– 11 Substations with breaker control– 2 Cogeneration plants– 3 Chilled water plants + small

chillers (8500 tons cooling)– Over 50 PV systems 8MW– 250+ building controls– Future Sewage Treatment plant– Future Well field operations

• Cogen plant 1 $16M7.2MW solar turbine Taurus 70Generates 55% of base load 55,000 + MWH/yearCollects 35 MBTU/Hr heat for heating and cooling of 60% of the base.

• Cogen/utility plant 2 - $48M9.2MW/ twin 4.6MW Mercury 50twin turbine for peak following2 - 20 MBTU/hr boilers3- 650 ton Chillers 1 – Electric Centrifugal 2 – AbsorptionExpected generation full year 55,000+ MWH

• PV systems8MW/ 54 locations tie to buildings Size of systems 20-1200 KW

• Battery Energy Storage System654 KW located on 1200 KW system

• Chiller plants (8 Central plants)8500 tons cooling capacity1900 tons absorption cooling

Smart Grid/Microgrid

• DOD OSD effort: ESTCP contract–GE systems identified as the contractor

for install–2 year $2M contract for installation and

testing–Limited scope using existing points

already installed to expand controls–Scope includes

– Controller/server,

– Capacitor bank,

– power factor control

– Battery Energy Storage

–Can be disabled for manual control• MCAGCC systems long range plan parallels

scope –Will combine all systems into a single

control network capable of monitoring, control, and load shedding

– Generation- Automatic function to switch from normal to renewable and island base

– Substation- monitoring, load shedding

• Way ahead–EMCS Fiber network must be upgraded to a

hybrid Fiber/RF configuration Completed–New smart switches for overlapping network

Completed –New network for substations/switches

Completed–Power factor controls on Cogen 1

Completed–Project P1232 - New infrastructure upgrades

for whole base island mode FY 16

• Microgrid Controller project- Tested for initial programming- Base had multiple changes - Updating program with P1232

project to incorporate all generation and electrical grid changes

• Base currently has one of the largest DOD type 2B Microgrid system using Cogeneration

- Current operation automatically picks up about 10MW of load in utility loss and sheds as necessary

Lessons Learning and Learned

• Keep it simple– Simple design– Simple operations– Redundancy

• Personnel– Training– Technical – Supervision

• Maintenance– Contracts support

• Communications• Support tools and equipment• Cyber security!!!!!

• Installation of equipment– MILCON– Local funding

• Keep it simple– Ongoing process to keep

• Maintenance– No M no work!

• Communications– Critical for functionality

• Personnel– Experience counts!– No training– IT required

• Support tools• Involve local utilities!• Cogeneration makes it larger and

easier

Microgrid Basic Design

Microgrid Features• Bulk Grid Connected or Islanded• Tri-Gen System• CHP, Diesel & PV• Building Loads as a Resource • Wireless local area network• Fiber to substations• Load as a Resource• Control loads substation/switch

level

Cogen Plant 1 – 7MW

Building Loads/PV

• Next phase combine Cogen plants into a basewide system capable of 24 MW. P1232

Building Loads/PV

Cogen plant 2 - 8MW

Co-Gen PLC Microgrid Controller

Ethernet Switch RF AntennaeBuilding Loads

2 MW PV

SCE Grid Tie

LTCOcotillo Switching Station Protection / Metering Relay

ExistingFiber Network

Fiber Network

MDS 3650Radio

13 Substations

Islanded Loads/PV 10 MW

Building Loads/PV

1.2 MW PV

Building Loads/PV Building Loads/PV

Islanded Loads/PV 4 MW

• Base has islanded 14 Hrs on one Cogen plant in winter Manual ops