Micro-grids and Smart Grid Applications

Transcription

1 Micr-grids and Smart Grid Applicatins Wrking and Future Micrgrid Applicatin MCAGCC 29 Palms Gary Mrrissett UMCS Utilities Energy Management Supervisr August Tampa Cnventin Center Tampa, Flrida

2 MCAGCC 29 Palms Micrgrid 2

3 MCAGCC 29 Palms Energy Base Pwer Basics Pwer prductin 16.4 MW 2 Cgeneratin plants 8.7 MW PV systems 5.2 MW n line 24.4 MW Ttal prductin capacity Winter peak 15 MW Summer 26 MW Lwering minimum imprt, Inadvertent Exprt Energy Security Cntingency plans fr lss f pwer and water Electrical grid redundancy Lad reductin capabilities Critical buildings and infrastructure backup generatrs Cgen plants, PV pwer prductin, Grid upgrades with switches and substatin cmmunicatin Micrgrid peratins central cntrl strategy EMCS DDC building mnitr and cntrl Leatherneck substatin 115KV line upgrade allws fr multiple feeds and redundancy 7 day backup fuel supply **Cyber Security ** 18,000,000 16,000,000 14,000,000 12,000,000 10,000,000 8,000,000 6,000,000 4,000,000 2,000,000 - FY 17 Usage 1st -3rd Qtr Actual Estimated 8 mnth ttal KWH Used 72,163,377 Kwh KWH Cgen 49,227,538 Kwh Grid Pwer 17,677,973 Kwh KWH PV 5,257,866 Kwh Ttal Generatin 54,485,404 3

4 Infrastructure Cgen plant 1 $16M (ESPC) 7.2MW slar turbine Taurus 70 Generates 55% f base lad 55,000 + MWH/year Cllects 35 MBTU/Hr heat fr heating and cling f 60% f the base. Cgen/utility plant 2 - $48M (MILCON) 9.2MW/ twin 4.6MW Mercury 50 twin turbine fr peak fllwing 2-20 MBTU/hr bilers tn Chillers 1 Electric Centrifugal 2 Absrptin Expected generatin full year 55,000+ MWH PV systems (EIP/ARRA/MILCON) 8.7MW/ 54 lcatins tie t buildings Size f systems KW Battery Energy Strage System (ESTCP) 654 KW lcated n 1200 KW system Chiller plants (8 Central plants) (ESPC/MILCON) 100,000 tns cling capacity 1900 tns absrptin cling Public Wrks Netwrk (PWN) Fiber cmmunicatins system Designed, Installed and Maintained by Public Wrks Divisin PWD IT and security requirements (Cyber Secured w ATO n EMCS) Mnitr/Cntrl/Metering 60 mtrized switches 11 Substatins with 34.5 and KV remte breaker cntrl 2 Cgeneratin plants 3 Chilled water plants + small chillers (10,000 tns cling) 54 PV systems 8.7 MW 250+ building cntrls Future Sewage Treatment plant Future Water treatment and Well field peratins 4

5 Micrgrid Expectatins f pwer and capabilities Decisin pints n what and hw t pwer Back up pwer still required fr critical facilities Hw far d yu want t g? Base t building Can yu Maintain the infrastructure yu install? Limitatins f the system? Turbines, grid Crdinatin studies and lad analysis Cmplicatin f system and cntrls Operatins Hw many peple understand hw the system wrks and hw it is prgrammed? Add n prjects New buildings and new electrical require mre attentin t specs and crdinatin studies Maintain Hw des the Gvt Maintain the system and repair it nce there is an issue? (supprt cntracts) Grid redundancy Des switching affect peratins and crdinatin? Yes requires active mapping and prgrams when changing lads Initial Micrgrid test with ESTCP 2011 MCAGCC has a wrking 10 MW Micrgrid Cgen plant (7MW) plus PV systems Islanding functins P 1232 MILCON Initial functin had plant idle and then pick up lads. 3.5MW initial 1MW 2006 Lads increased n 4 feeders 2MW which required changes 2008-Cmparisn f generated pwer t lads n circuits Upn lss f pwer if lads are mre than generatin then circuits will pen until lads are less then generatin 1.2 MW PV system can be energized t aid in pwer Segmentatin cntrls installed (pass 2) Base wide effrt tying bth plants and all substatins int cntrl effrts 15 MW Cgen + 8.7MW PV = 24MW Adding Battery energy strage fr stability due t PV instability when islanded 5

6 P-1232: MicrGrid Expansin Infrastructure Upgrades - Gillespie Substatin (~$3.2M) (2) New, larger transfrmers (2) New 34.5KV Breakers Grunding upgrades - AA Substatin (~$750K) New 34.5KV Breaker Grunding upgrades - N Substatin (~$1.2M) (2) New 34.5KV Breakers - SCADA System (~$750K) (6) Additinal SCADAMate switches Update cmmunicatin lines/pathways New Graphics/Interfaces (~$1.3M in cntrls and prgramming) Upgrades and recnfiguratin f electrical grid cmmunicatins & prgramming Upgrades t turbine cntrl packages at each Cgen Plant Majrity f the effrt cnsists f prgramming and lgic rather than building/installing equipment. 6

7 Micrgrid Basic Design SCE Grid Tie LTC Existing Fiber Netwrk Octill Switching Statin Prtectin / Metering Relay Substatin level cntrls t manage lading Base has islanded 14 Hrs n ne Cgen plant in winter Manual ps Micrgrid Features Bulk Grid Cnnected r Islanded Tri-Gen System CHP, Diesel & PV Building Lads as a Resurce Fiber netwrk t substatins Lad as a Resurce Cntrl lads substatin/switch level Building Lads Cisc 2960C Ethernet Switch RF Antennae C-Gen PLC Micrgrid Cntrller Building Lads/PV Islanded Lads/PV 10 MW Building Lads/PV Islanded Lads/PV 4 MW Building Lads/PV 2 MW PV 1.2 MW PV Cgen Plant 1 7MW Building Lads/PV Cgen plant 2-8MW Building Lads/PV Fiber Netwrk 13 Substatins 7

8 Cgen Plant 1 Breakers 8

9 Electrical Grid 34.5KV Switches and Substatins 9

10 Electrical Grid 12.47KV Switches and Substatins 10

11 Cntrl and Cmmunicatins Equipment 11

12 Lessns Learned Keep it simple Simple design Simple peratins Redundancy Onging prcess Persnnel Training Technical Supervisin Maintenance Cntracts supprt N M n wrk! Gvt. cannt maintain these cmplex systems. Cyber security!!!!! Maximize generatin and lwer csts. $.13/Kwh grid vs $.06/Kwh Watch hw yur peratrs, Operate! Installatin f equipment MILCON Lcal funding Cmmunicatins Critical fr functinality Electrical grid cntrl speed Cmmunicatin prtcls Persnnel Experience cunts! Pwer and grid N experience r training IT backgrund required Supprt tls DOE Invlve lcal utilities! N tariffs New cntrls strategies Cgeneratin makes it larger and easier. The mre systems the mre cmplex 12

13 Base Single Line 13

14 PV Generatin 14

15 Effrt was ver 15 years ver multiple prjects Had a great pwer and grid engineer Energy side wrking cntrls and generatin Crdinatin and cperatin! Questins? 15