Microgrid Controller HIL Development

Transcription

1 2016 Smart Grid R&D Program Peer Review Meeting Microgrid Controller HIL Development Kendall Nowocin MIT-LL Group 73: Energy Systems and MIT PhD Student 17 August 17, 2016 MIT Lincoln Laboratory This work is sponsored by the Department of Energy, Office of Electricity Delivery and Energy Reliability, and Argonne National Laboratory under Air Force Contract #FA C Opinions, interpretations, conclusions and recommendations are those of the author and are not necessarily endorsed by the United States Government. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

2 Microgrid Controller HIL Development Objectives & Outcomes Fundamentally improve power distribution system engineering to enable widespread microgids and renewables deployment Reduce system integration risk and cost Establish interoperability and industry standard toolset Facilitate university power systems education and industry training Life-cycle Funding Summary ($K) Prior to FY 16 FY16, authorized FY17, requested Outyear(s) DOE * Spent as of 1300 ** August 1, 16 * Funds received June 2016 ** Additional funding from joint DHS program Test Repository Controllerin-the-Loop Repository HIL Platform Repository Test Feeders Interface Circuitry Electrical Doc. HIL Target Platform Conversion Scripts Standard Test Stimuli Interface Code for Device Controllers Validated Device Models Post-processing Scripts for Results Comms Interface Translation Code IEC Modbu s TCP GOOSE Validated Device Controller Software MMS Technical Scope Develop C-HIL test platform Hardware-in-the-Loop Laboratory Testbed and Open Platform (HILLTOP) Formalize test into IEEE standards Use testing expertise to review and improve rigor of DOE FOA 997 microgrid test plans Develop shared real time model repository with industry, labs, and academia Apply C-HIL to real microgrid projects to reduce deployment risk Community mgrids - 2 2

3 Community Microgrid Technology Challenges Community microgrid => Regional Transmission Operator Distribution Utility DMS Microgrid Controller Residential load Industrial load CHP plant N Solar array = controller Substation FY 16 Focus (DOE) CHP plant 1 Critical load Battery storage FY 16 Focus (DOD/ONR) Requirements Economical asset integration Safe interconnection Stable off-grid operation Challenge Integration of multiple assets owned by separate entities No low-level control Minimize cost, eliminate batteries S&T solution Open controller standard, HIL testbed Islanding detection using only sensing Reference design: mix of fast-responding generation assets Community mgrids - 3

4 Outline of Vision for the Power System HIL Integration Platform 1 Development Platform Needs and Platform Selection Model Development and Controller Integration Microgrid & DER Controls Symposiums 2 Deployment Platform OPAL RT, Typhoon HIL, Schneider, Schweitzer Engineering Laboratory, and SPS San Nicolas Island 3 Standards Test Platform IEEE P and P Standards 4 Electric Power HIL Controls Collaborative (EPHCC) Shared Repository Community mgrids - 4

5 C-HIL Solution GENERATION TRANSMISSION DISTRIBUTION 13,200 volts Distributed Generation Required Engineering Analyses 345,000 volts 69,000 volts Cogeneration Microgrids Wind Grid Scale Batteries Distributed Solar 120/240 volts Generation Station Analysis Central Generation Transmission Distribution Industrial Loads DER Steady State GAP Power Flow Short Circuit GAP Electromagnetic GAP GAP Transient Dynamic Control Visibility required GAP (Islanded Stability and grid-tied) Unit Commitment Transmission Substation Transmission Lines Transmission Substation Industrial Customer GAP (islanded) Commercial/Residential Customer Not applicable GAP GAP Not applicable System Planning Not applicable Community mgrids - 5

6 Analogy Examples Power Systems Testbeds Matlab SimPowerSystems simulation (not real-time) Actual device and microgrid controller with real-time simulation Real-time simulation coupled with power electronics testbed Low-power microgrid testbed Actual microgrid (DECC Microgrid Lab) (Princeton U. cogen plant) Simulation Inv G C C (Florida State CAPS facility) (Microgrid controller HIL) Controller HIL Power HIL Power Testbed Full System Inv G Inv G Inv G C C DMS C C C C mc mc mc Inv G C C DMS Legend G generator Inv battery or solar inverter C device controller mc microgrid controller DMS distribution management system controller power grid high-bandwidth AC-AC converter simulation or emulation boundary hardware virtual (simulated or emulated) Slow PC simulation, small screen, keyboard/mouse inputs Actual plane cockpit, advanced simulation, wide field-of-view Moving cockpit, field-of-view visualization Trainer aircraft Passenger-carrying aircraft Community mgrids - 6

7 Test Coverage Power Systems Testbeds Simulation Controller HIL Power HIL Power Testbed Full System Inv G Inv G Inv G Inv G Inv G C C C C DMS C C C C C C DMS mc mc mc High Simulation Controller HIL Legend G generator Inv battery or solar inverter C device controller mc microgrid controller DMS distribution management system controller power grid high-bandwidth AC-AC converter simulation or emulation boundary Power HIL hardware virtual (simulated or emulated) low cost ($10k-100k) moderate cost ($100k-300k) high cost ($500k-$millions) Low Power Testbed Full System Low Realism High Community mgrids - 7

8 High-Coverage Real-time Simulation Microgrid controller HIL simulates in real-time at sub-cycle timescales HIL simulation rate 80 ms (12.5 khz) Power system fault transients ms (1-3 khz) Power converter controller response ms (1-2 khz) Genset protection functions s ( Hz) One AC cycle 16.7 ms (60 Hz) User display update rate 66.7 ms (15 Hz) Secondary control s (1-10 Hz) Load profile & irradiance data 1 s (1 Hz) Useful for: Steady-state Dynamic analysis Transient analyses 1 ms Time (seconds) s Community mgrids - 8

9 Outline of Vision for the Power System HIL Integration Platform 1 Development Platform Needs and Platform Selection Model Development and Controller Integration Microgrid & DER Controls Symposiums 2 Deployment Platform OPAL RT, Typhoon HIL, Schneider, Schweitzer Engineering Laboratory, and SPS San Nicolas Island 3 Standards Test Platform IEEE P and P Standards 4 Electric Power HIL Controls Collaborative (EPHCC) Shared Repository Community mgrids - 9

10 HILLTOP Device Controller Integration: Breadboard Windows Server Opal-RT target Opal-RT Interface Woodward Controller EasyGEN 3000 Oscilloscope Opal-RT Interface Power Supply Woodward Interface Cabling Power Supply Community mgrids - 10

11 HILLTOP Device Controller Integration: Brassboard T a c h o m e t e r V a b c I a b c V a b c I a F e e d e r Woodward easygen 3000 Controller F _ ref : 60 Hz V _ ref : 480 V LL Governor AVR Throttle Field M Genset Simulation in HIL G GCB Load MCB 16 Vac 16 Vac 16 Vac 16 Vac ± 5 V square wave 120 Vac 0-1 A 120 VAC 0-1 A Interface Box M G GCB MCB Legend Motor Generator Generator Circuit Breaker Mains Circuit Breaker Signal voltage transformer Voltage-controlled current source Community mgrids - 11

12 HILLTOP Device Controller Integration: Brassboard Testing Woodward Controller EasyGEN 3000 Woodward Interface Caling Community mgrids - 12

13 HILLTOP Device Controller Integration: Final Firewall and Network Switch Console Woodward easygens Interface Box Monitoring I/O Analog & Digital Opal-RT HIL Target Two integrated Woodward easygen 3000 genset controllers MIT Lincoln Lab Windows Server Power Supply Community mgrids - 13

14 HILLTOP Integration: Model Validation 1 MVA 480Vac 3 phase Generator statistics High speed instrumentation 8kHz sampling Voltage and current Bias signals Start-up of Generator and Model Shutdown of Generator and Model Community mgrids - 14

15 2015 HILLTOP Block Diagram Vendor-supplied equipment Microgrid Controller Unit Under Test Connection to HIL Demonstration Platform COM Modbus TCP Prime Mover Device Controller Woodward EasyGen 3500 #1 Prime Mover Device Controller Woodward EasyGen 3500 #2 Firewall and Network Switch Modbus TCP Modbus TCP Modbus TCP Modbus RS485 Modbus RS485 Lantronix Intellibox 2100 TCP to RS485 Lantronix Intellibox 2100 TCP to RS485 Interface Box COM DIO AIO COM DIO AIO COM DIO AIO COM DIO AIO COM DIO AIO COM DIO AIO Simulated Battery Power Converter Controller Simulated PV Inverter Controller Simulated Protection Controller Simulated 1 MVA Genset Simulated 4 MVA Genset Simulated Battery Storage & Power Converter OPAL-RT HIL 5607 Simulated PV & Inverter Simulated Relays, Breakers, and Telemetry Simulated Grid and One Line Diagram of the Test Feeder (~18 Buses and 17 lines) Power Community mgrids - 15

16 2016 HILLTOP Block Diagram Vendor-supplied equipment Microgrid Controller (Unit Under Test) Communication Translation Hardware / Firmware COM Microgrid Controller Mechanical Enclosure Modbus TCP Microgrid Controller Under Test MODBUS / TCP Connection Modbus TCP Firewall and Network Switch Firewall Cyber Test C2 Proxy HTTPS C2P Command & Control Control Policy Lantronix Intellibox 2100 TCP to RS485 MODBUS / TCP Command / Control & Status Modbus RS485 Woodward EasyGen 3500 #1 Lantronix Intellibox 2100 TCP to RS485 Command and Control Proxy (C2P) Modbus RS485 Proxy legitimate control traffic View and modify as needed Capture statistics EPC Power Woodward Log all traffic and Electronics activities EasyGen 3500 #2 MODBUS / TCP Connection Controller #1: Storage MIT-LL Interface Box EPC Power Electronics Controller #2: PV Configuration Commands Status & logs SEL-751 Relays (qty 3) Emulated Microgrid MIT-LL Interface Box COM DIO AIO COM DIO AIO COM DIO AIO COM DIO AIO COM DIO AIO Simulated Load Meters Simulated Generic Relays Simulated Combined Heat and Power System Simulated Diesel Genset Simulated Battery Storage & Power Converter Simulated PV & Inverter Simulated Breakers and Loads Simulated Distribution Grid and Microgrid Test Feeder OPAL-RT and Typhoon HIL Real-time Simulation Platforms Community mgrids - 16

17 2015 & 2016 Symposium Test Feeder FY15 Symposium FY16 Symposium Community mgrids - 17

18 Outline of Vision for the Power System HIL Integration Platform 1 Development Platform Needs and Platform Selection Model Development and Controller Integration Microgrid & DER Controls Symposiums 2 Deployment Platform OPAL RT, Typhoon HIL, Schneider, Schweitzer Engineering Laboratory, and SPS San Nicolas Island 3 Standards Test Platform IEEE P and P Standards 4 Electric Power HIL Controls Collaborative (EPHCC) Shared Repository Community mgrids - 18

19 Community mgrids Symposium

20 Microgrid Controller Symposium Save the Date: Thursday February 16, 2017 at MIT Eventbrite: Microgrid & DER Controller Symposium Hosted by Mass. Clean Energy Center and DOE-OE Utilities, project developers, and microgrid vendors MIT Campus Agenda is posted 6 Microgrid Controller Vendors: Eaton, ICETEC, Green Energy Systems, Schweitzer Engineering Labs, Sustainable Power Systems, and Schneider Community mgrids - 20

21 Outline of vision for the Power System HIL Integration Platform 1 Development Platform Needs and Platform Selection Model Development and Controller Integration Microgrid & DER Controls Symposiums 2 Deployment Platform OPAL RT, Typhoon HIL, Schneider, Schweitzer Engineering Laboratory, and SPS San Nicolas Island 3 Standards Test Platform IEEE P and P Standards 4 Electric Power HIL Controls Collaborative (EPHCC) Shared Repository Community mgrids - 21

22 HILLTOP Technology Transfer Efforts San Nicolas Island Community mgrids - 22

23 Industry Feedback on the Electric Power HIL System It would reduce our risks and costs considerably The ability to perform commissioning of a microgrid s control systems prior to construction would also reduce the distribution utility s perceived technical risk, thereby increasing our project success rate and reducing deployment timelines and costs. Dr. Luis Ortiz, Anbaric Microgrid An open source HIL library would accelerate the entire industry, but the industry isn t organized well enough to make this happen. This is a perfect role for government. We would contribute engineering support to such an effort. Schneider Electric executive Community mgrids - 23

24 Outline of Vision for the Power System HIL Integration Platform 1 Development Platform Needs and Platform Selection Model Development and Controller Integration Microgrid & DER Controls Symposiums 2 Deployment Platform OPAL RT, Typhoon HIL, Schneider, Schweitzer Engineering Laboratory, and SPS San Nicolas Island 3 Standards Test Platform IEEE P and P Standards 4 Electric Power HIL Controls Collaborative (EPHCC) Shared Repository Community mgrids - 24

25 Outline of Vision for the Power System HIL Integration Platform 1 Development Platform Needs and Platform Selection Model Development and Controller Integration Microgrid & DER Controls Symposiums 2 Deployment Platform OPAL RT, Typhoon HIL, Schneider, Schweitzer Engineering Laboratory, and SPS San Nicolas Island 3 Standards Test Platform IEEE P and P Standards 4 Electric Power HIL Controls Collaborative (EPHCC) Shared Repository Community mgrids - 25

26 Overview of EPHCC (Electric Power HIL Controls Collaborative) Group is formed from Lincoln Laboratory, DOE Labs, and a sizeable set of industry partners Component models, distribution systems, and HIL setups are documented and tested 2015 work: EPHCC work: Working with GMLC partners as pilot effort to hone organization and working processes Bi-weekly organizing committee has been meeting for several weeks now Community mgrids - 26

27 Component Inventory for Model Curation Repo. Category Fidelity Verification Component Type Dev. Environment Real-time Platform SW device model 0 - n/a 0 - "pre-alpha," untested Cable Matlab 2011b, SimPwrSys OPAL-RT SW controller 1 - steady-state 1 - "beta," unverified Breaker Matlab 2014, SimPwrSys Typhoon HIL C-HIL interface 2 - dynamic 2 - textbook implementation Relay Typhoon RTDS P-HIL interface 3 - transient 3 - agrees with literature Other LabVIEW National Instruments Test feeder 4 - unit tested Transformer - 3ph RSCAD Speedgoat 5 - field tested Transformer < 3ph dspace Load DG - Power Electronics DG - Machines Work continues to identify additional key components and additional industry partners Community mgrids - 27

28 FY17 Vision and Tasks for the Power System HIL Integration Platform 1 Development Platform HILLTOP for Self-Healing Distribution Support of DOE FOA 997 TAG Education platform development 2 Deployment Platform Boston Microgrids: BMIP Commission Testing with Eversource Raytheon Joint Base Cape Cod Interconnection and System Impact Analysis Tool 3 Standards Test Platform Support and Develop IEEE P Certification Tests 4 Electric Power HIL Controls Collaborative (EPHCC) Shared Repository Community mgrids - 28

29 Lessons Learned Integration and validation work should only be done once Controller integration Model validation with equipment Take small steps fast, no technology lock-in, and iterate frequently Work with early adopters and then expand Pilot project for GMLC-OL Refine the capabilities demonstrated at the annual Symposium Effective testing requires experience built over time IEEE P test standard 379 comments provided to DOE FOA 997 awardees Community mgrids - 29

30 Contributors MIT-LL Division 7 Scott van Broekhoven Ed Corbett Maura Custar Elizabeth Dalli Jason LaPenta Erik Limpaecher Raajiv Rekha Bill Ross Reynaldo Salcedo Tammy Santora Chris Smith MIT Kendall Nowocin MIT-LL Summer Interns Matt Backes, UIUC Aidan Dowdle, MIT Marissa Garcia, USC MIT-LL Division 4 Joe Cooley MIT-LL Division 6 Igor Pedan Sejal Popat Collaborators Allan Abela, EPC Power Vijay Bhavaraju, Eaton Ivan Celanovic, Typhoon HIL Fran Cummings, Peregrine Group Babak Enayati, National Grid Mark Evlyn, Schneider Electric Julie Fortin-Morin, OPAL RT Thomas Kirk, OPAL RT Scott Manson, Schweitzer Mirjana Marden, ARPA-E Galen Nelson, MassCEC Luis Ortiz, Anbaric Jim Reilly, Reilly Associates Todd Snider, EPC Power Travis Sheehan, Boston Redev. Authority Tom Steber, Schneider Electric Brad Swing, City of Boston Community mgrids - 30

31 Kendall Nowocin MIT PhD Student Energy Systems, Group (lab) Community mgrids - 31

32 Community mgrids - 32 BACK-UP SLIDES

33 Status Quo: Single-customer Microgrids Only economical and practical for large utility customers University campuses Hospitals Prisons Department of Defense bases Princeton University 15 MW cogen & thermal storage Illinois Institute of Technology high reliability distribution system Santa Rita Jail CERTS microgrid controller Community mgrids - 33

34 Community Microgrids Cost-effective, nationally deployable multi-customer microgrids Many recent studies no actual execution Sandia Advanced Microgrids study (Mar 2014) Microgrids for the Commonwealth of Massachusetts (Feb 2014) Minnesota Microgrids (Sep 2013) Challenges Technical Regional resilience analysis: site selection Microgrid site design Economical systems integration Safe grid interconnection Stable islanded operation Policy Coordination with public utilities commission Framework for utility involvement Financial pro forma for real estate developers Community microgrid Graphic credit: EPRI Community mgrids - 34

35 Industry Feedback and FY16 HIL Development Priorities Attendee Priority Devel. Development Status Priority 1 1 Test under fault conditions 7 1 Self-healing and distribution system configurability 14 1 Test more system topologies 3 1 Integration of more DER device controllers 7 5 More formal testing / more rigorous analysis and metrics 9 5 Compare vendors performance 6 5 Exercise cyber security 9 8 Integration of more microgrid controllers / vendors 2 9 Islanded operation under more dynamic conditions 9 9 More extensive demonstration sequence / functionality 4 - Integration with distribution management system (DMS) 4 - Test against industry standard(s) 9 - Support additional communication protocols 13 - Integration with ISO energy market Blue: features considered for 2 nd Symposium Not started In progress Done/tested Not planned Community mgrids - 35

36 Community mgrids - 36 Heads-up Display (screen 1)

37 Community mgrids - 37 Heads-up Display (screen 2)

38 Outline Program Overview FY16 Activities Microgrid Controller Symposium Shared HIL Repository TAG Support IEEE Support Cyber Security Scoping Study City of Boston Microgrids: BMIP Microgrid Conceptual Design Summary of YTD Completions Way Ahead Community mgrids - 38

39 CHIL Integration SEL 751 Relay SEL Collaboration Three feeder protection relays implemented in hardware Hardware I/O interface to PTs, CT s, breakers Preliminary Calculations OPAL-RT INTERFACE WIRING DIAGRAM Protection Functions Protection features: Overcurrent (50, 51) Over/under voltage (27, 59) Synchronism check (25) Grid-tied protection Islanded protection Modbus TCP interface Registers Mapping Data Logging Community mgrids - 39

40 CHIL Integration EPC Power Inverter Battery and PV Inverter to manufacturer validated modelled inverter Inverter features: Grid Forming Grid Following Modbus over RS485 Manufacturer Validated Model EPC Inverter User Interface Community mgrids - 40

41 CHIL Integration Diesel Generator 1 MVA 480Vac 3 phase Generator statistics High speed instrumentation 8kHz sampling Voltage and current Bias signals Start-up of Generator and Model Shutdown of Generator and Model Community mgrids - 41

42 Cybersecurity Plan Microgrid Controller Under Test MODBUS / TCP Connection Firewall HTTPS C2P Command & Control Control Policy Questionnaire for industry Installed equipment MODBUS / TCP Command / Control & Status Command and Control Proxy (C2P) Proxy legitimate control traffic View and modify as needed Capture statistics Log all traffic and activities Configuration Commands Status & logs Packet capture and development of scenarios and characterization MODBUS / TCP Connection Emulated Microgrid Community mgrids - 42

43 Outline Program Overview FY16 Activities Microgrid Controller Symposium Shared HIL Repository TAG Support IEEE Support Cyber Security Scoping Study City of Boston Microgrids: BMIP Microgrid Conceptual Design Summary of YTD Completions Way Ahead Community mgrids - 43

44 Collaborative Design Objectives Designed for sharing and multiple simulation platforms Directory structure organized for multiple simulation platforms Working on ways to allow translation Common distribution file format will be the first step Unit tests for checking compatibility across tools Documentation for each component Distribution feeders pull from component libraries Case studies allows imposing different test cases on feeder systems Community mgrids - 44

45 2015 HIL Code and Interfaces: Approved for Github Public Release 2015 Symposium Development available in GitHub GROUP/HIL_2015_Symposium Package includes: Model of microgrid test feeder Models of genset and power electronics PV and battery control software Interface circuitry and software for Woodward genset controller Documentation and user s guide Community mgrids - 45

46 EPHCC: Repository Structure Distribution Systems Sheriff Bullfrog Banshee Cable Transformer Passive Load Active Load Root Components Relay Genset PV CHP/ Thermal Cross-platform Translation Tools Goals: Multi-users Multi-platform Directory structure designed for other simulation platforms Unit tests for checking compatibility across tools Model Stimuli Post-Processing Scripts Circuit Breaker Motor ESS Device Model Software Controller Documentation ABB CHIL EPC CHIL Vendor-X CHIL Validation Unit Test Community mgrids - 46

47 EPHCC: National HIL Inventory Repo. Category Fidelity Verification Component Type Dev. Environment Real-time Platform SW device model 0 - n/a 0 - "pre-alpha," untested Cable Matlab 2011b, SimPwrSys OPAL-RT SW controller 1 - steady-state 1 - "beta," unverified Breaker Matlab 2014, SimPwrSys Typhoon HIL C-HIL interface 2 - dynamic 2 - textbook implementation Relay Typhoon RTDS P-HIL interface 3 - transient 3 - agrees with literature Other LabVIEW National Instruments Test feeder 4 - unit tested Transformer - 3ph RSCAD Speedgoat 5 - field tested Transformer < 3ph dspace Load DG - Power Electronics DG - Machines Developed framework for inventory list Population of Information from Industry OPAL RT => 100 models National Labs Academic MIT CMU Community mgrids - 47

48 Outline Program Overview FY16 Activities Microgrid Controller Symposium Shared HIL Repository TAG Support IEEE Support Cyber Security Scoping Study City of Boston Microgrids: BMIP Microgrid Conceptual Design Summary of YTD Completions Way Ahead Community mgrids - 48

49 Support of IEEE P Participated in working group telecoms April and June 2016 New terminology definitions: Microgrid control system, point of interconnection, Transition (4 cases) Dispatch (3 functionalities) Utility, operator, and device Community mgrids - 49

50 Support of IEEE P Participated in working group telecoms April and June 2016 Proposed.8 document structure based off 1547 format Definitions seamless transitioning Fault locations and types based off of Los Alamos work Discussion of Benchmark Microgrid Model Proposed Performance Evaluation Formulae 9 Key Performance Parameters Community mgrids - 50

51 Community mgrids - 51 IEEE Contributions

52 Boston Marine Industrial Park Notional Distribution System Layout Tier 1 Tier 2 V Tier 3 W V1 M2 S G Switch Generator S G2 M1 A S B U G3 T X R L2 P O N M Q1 Q D Y G1 G H S G1 L1 L E C A B F1 F I J S K D C1 C2 Community mgrids - 52

53 Outline Program Overview FY16 Activities Microgrid Controller Symposium Shared HIL Repository TAG Support IEEE Support Cyber Security Scoping Study City of Boston Microgrids: BMIP Microgrid Conceptual Design Summary of YTD Completions Way Ahead Community mgrids - 53

54 FY16 Focus Community microgrid Regional Transmission Operator Distribution Utility DMS Microgrid Controller Residential load Industrial load CHP plant N Solar array CHP plant 1 Critical load Battery storage = controller Substation Requirements Economical asset integration Safe interconnection Stable off-grid operation Challenge Integration of multiple assets owned by separate entities No low-level control Minimize cost, eliminate batteries S&T solution Open controller standard, HIL testbed Islanding detection using only sensing Reference design: mix of fast-responding generation assets Community mgrids - 54

55 FY16: Publications IEEE Journal Paper Submission DoD Sponsored Research: ONR Tactical Energy Systems Control algorithms that are open, modular, and scalable Define interface requirements for grid stability in ad-hoc configurations Leverages: Prior tactical microgrid development work CMU dynamic modeling approaches Community mgrids - 55

56 The microgrid controller HIL platform would be helpful to my organization for educating stakeholders. test[ing] our project concepts. SoCalEdison engineer Celtic Energy demonstrat[ing] standard functions and develop[ing] new functionalities. ABB engineer certification for utility interconnection. pre-commissioning testing. evaluating the safety and reliability impact on our distribution system of NY REV projects. ComEd engineer DER vendors won t give us their controller code to evaluate interconnection behavior. This platform could finally solve that problem. National Grid engineer pre-deployment testing of our self-healing distribution system project, which includes more than 100 intelligent relays. VP of Engineering, Eversource Energy Community mgrids - 56