Solar Microgrid Technical Presentation

Transcription

1 4 TH FEB 2018 Solar Microgrid Technical Presentation For Provident Sunworth

2 Solar Microgrid Proposal for Provident Sunworth Introduction Introduction Provident Sunworth housing complex has a collective loads of around actual load of around 249kW which includes both resistive and inductive loads. Majority of these loads are inductive in nature which is consumed by WTP and STP Provident Sunworth group wants to install around 100kWp solar microgrid power plant in phase1, in order to reduce its electricity bill and to reduce the Diesel consumption during power cuts The solar power plant will be installed on a 10 feet elevated structure in order to utilize the space underneath. This will be a flag ship projects. January 25, 2018 Slide 2

3 Connected Load details for Provident Sunworth Some of the facility includes for both phase-1 & phase-2: Such as Club House, Amenity Area Lighting & WTP These are the major contributors for maintenance charges in form of electricity bills for common area Sl No Location Type of Load Load in Watts Load in Kw Connected Actual Connected Actual 1 Common Area Lights 2 Club House Lighting Lighting Inductive STP Inductive WTP Inductive Total January 25, 2018 Slide 3

4 MGS100 Microgrid System Concept January 25, 2018 Slide 4

5 MGS100 Microgrid System Concept January 25, 2018 Slide 5

6 MGS100 Microgrid System Concept January 25, 2018 Slide 6

7 MGS100 Microgrid System Concept January 25, 2018 Slide 7

8 MGS100 Microgrid System Concept January 25, 2018 Slide 8

9 MGS100 Microgrid System Concept January 25, 2018 Slide 9

10 Operating modes of MGS100

11 MGS100 Microgrid System Block Diagram January 25, 2018 Slide 11

12 MGS100 Microgrid System Operating modes On-Grid modes Normal operating mode Power export mode Battery charge mode Charging from solar Charging from grid Off-grid modes Normal mode Battery charge mode Limit mode Night mode Battery hold mode Battery charge mode Night off-grid mode Recovery Modes Deep discharge mode Battery recovery mode January 25, 2018 Slide 12

13 MGS100 Microgrid System On-Grid modes Normal operating mode Grid = Available Solar = Available Load power>solar power Battery charge = 100% Grid and solar will be supporting the loads in this condition. Power drawn from the grid will be Grid=LoadSolar. Battery charge will be reserved in this condition. January 25, 2018 Slide 13 Note: Grid can be BESCOM grid or from any AC generator (DG or Biomass)

14 MGS100 Microgrid System On-Grid modes Power export mode Grid = Available Solar = Available Solar power>load power Battery charge = 100% Loads will be completely supported by solar. Excess solar power will be exported to grid. Please note this mode must be disabled in case DG/ AC Generator is used as the source January 25, 2018 Slide 14 Note: Power export can be disabled (Settable parameter)

15 MGS100 Microgrid System Battery Charge Modes Charging from solar Grid = Available Solar = Available Solar power>load power Battery charge < 100% In this mode, complete load will be supported by solar. Excess solar power will be used to charge the battery through bi-directional converter. January 25, 2018 Slide 15

16 MGS100 Microgrid System Battery Charge Modes Charging from Grid Grid = Available Solar = Available Load power>solar power Battery charge < 100% In this mode, load will be supported by solar and grid. Grid power is also used to charge the battery. Power drawn from the grid is, Grid=LoadSolar+Battery charging power January 25, 2018 Slide 16 Note: MGS100 has two independent charging paths 1. Grid to Battery 2. Solar to battery

17 MGS100 Microgrid System Off-Grid Modes Normal mode Grid = Not Available Solar = Available Load power>solar power Battery charge < 100% In this mode, load will be supported by solar and battery. Power drawn from battery will be, Battery=LoadSolar January 25, 2018 Slide 17 Note: Evening Priority** mode could be activated for off-grid only systems **In Evening priority mode, priority will be given to charge the battery during daytime so that loads could be powered from battery during night time. During daytime, loads will be catered by solar only if Battery>90% in this mode

18 MGS100 Microgrid System Off-Grid Modes Battery charge mode Grid = Not Available Solar = Available Solar power>load power Battery charge < 100% In this mode, the loads will be completely supported by solar. The excess solar power will be used to charge the batteries. January 25, 2018 Slide 18

19 MGS100 Microgrid System Off-Grid Modes Limit mode Grid = Not Available Solar = Available Solar power>load power Battery charge = 100% In this mode, the loads will be completely supported by solar. The excess solar power will be limited (Clipped off) in order to maintain stability in the system. The generation from Solar=Load January 25, 2018 Slide 19 Note: The same limit mode will be active in case DG/ BM is connected for ensuring no reverse power flow to generator

20 MGS100 Microgrid System Recovery Modes Deep discharge mode Grid = Not Available Solar = Not Available Battery charge < %AbsMin (Absolute Minimum) In this mode, from the night off-grid mode battery continues to discharge and support the loads until the battery charge % reaches a setpoint, AbsMin (Absolute Minimum). Once the battery reaches %AbsMin, all the loads will be dropped in order to protect the batteries and keep the control circuit active January 25, 2018 Slide 20

21 January 25, 2018 Slide 21

22 Salient features

23 MGS100 Microgrid System Salient Features Plug & Play Solution Converter & Charger Controller Solar Inverter January 25, 2018 Slide 23

24 MGS100 Microgrid System Salient Features Plug & Play Solution All necessary protection on input & output side are incorporated Converter & Charger Controller Solar Inverter No need of ACDB or DCDB January 25, 2018 Slide 24

25 MGS100 Microgrid System Salient Features Plug & Play Solution All necessary protection on input & output side are incorporated Smaller installation and commissioning time #1- Grid/DG Converter & Charger #4- Loads #2- Battery Bank Controller #3- Solar Array Solar Inverter Just connect 4 sets of cables and commission the system! January 25, 2018 Slide 25

26 MGS100 Microgrid System Salient Features Modular, Scalable Solution Capacity of Solar/Load can be increased by adding more inverters in parallel Following solar capacities (Multiple combinations with it are possible) 20 kw 27.6 kw 50 kw Following combinations of load capacities are possible 40kW Easily scalable to meet different customer needs 40kWx2 =80kW =47.6kW Converter & Charger Converter & Charger Solar Inverter Solar Inverter Controller January 25, 2018 Slide 26

27 MGS100 Microgrid System Salient Features Delivers Quality Power Loads will not be interrupted to source side variations Converter & Charger Controller Solar Inverter MGS100 delivers the compensation and clean power is delivered January 25, 2018 Slide 27

28 MGS100 Microgrid System Salient Features Delivers Quality Power Loads will not be interrupted to source side variations Input voltage and frequency variations will not affect output V & f V=402 v f=48.2hz Converter & Charger V=415 v f=50hz Controller Solar Inverter MGS100 delivers the compensation and clean power is delivered January 25, 2018 Slide 28

29 MGS100 Microgrid System Salient Features Monitor/Modify Remotely The system data can be monitored and controlled locally as well as remotely Converter & Charger Controller Solar Inverter RMA HMI Data connection for remote monitoring to be present at site Remote Monitoring RMA Remote Monitoring Adapter Local Monitoring January 25, 2018 Slide 29

30 MGS100 Microgrid System Salient Features Monitor/Modify Remotely The system data can be monitored and controlled locally as well as remotely The system is IoT ready. Any future modification in the system program like (Grid Export enabling-disabling/dg addition can be done remotely) DG Converter & Charger Solar Inverter Controller RMA HMI Data/internet connection for connecting to the system to be available at site Remote Monitoring RMA Remote Monitoring Adapter Local Monitoring January 25, 2018 Slide 30

31 MGS100 Microgrid System Salient Features Salient Features True 3 phase solution (No paralleling of 3 x 1 Phase inverters) Integrated, customizable Plug & Play solution Modular, scalable solution Delivers quality power to the loads Loads will not be interrupted for source variations Input voltage and frequency variations will not affect output V & f Operates with 100% phase to phase imbalance continuously Support sources of capacity lesser rated than load (DG rating < Load rating) Operates with large voltage and frequency variation èrequisite for Biomass generator Capability to monitor/modify remotely Seamlessly can operate with multiple sources simultaneously DG-Solar-Grid-Battery Biomass-Solar-Grid-Battery January 25, 2018 Slide 31

32 Solar Microgrid Proposal for Provident Sunworth Grid-tied Vs Microgrid Grid-Tied plant Usually consists of a simple, passive DC-AC inverter which will convert input DC from solar PV to output AC It cannot work without absence of grid System can synchronize with DG however it can backfeed to DG and can damage the DG (Need additional sophisticated controllers for proper operation) There will be interruption to the loads during power cut, until DG is turned ON and synchronized System has no control over the sources, it will just synchronize and pump power to grid System is cheaper. As there is no controller or batteries System suitable for MW scale projects and locations with no powercuts Solar penetration will be limited to base load Microgrid plant It consists of several converters like charger, rectifier, bi-directional converter in addition to DC-AC inverter It can work islanded, even with absence of grid or DG System can synchronize with DG and will never back feed to DG. It also maintains required minimum load on DG There will be no interruption to the loads during power cut. DG can be turned ON only if required. Can work islanded System is intelligent. Has control over the loads and sources. It gives priority to cheapest sources first then to costly sources (DG) System is costly as there is a sophisticated controller, charger, rectifier and batteries. Also reduces peak demand of the grid Suitable for smaller plants of any scale Solar penetration can be upto peak load January 25, 2018 Slide 32

33 Solar Microgrid Proposal for Provident Sunworth Layout Layout à Solar PV plant location à Cable routing/connection point (~600mtrs) to main LT panel (Can be changed with new scheme) à Club house location à WTP feeder location (pls locate) à Lighting feeder location (pls locate) January 25, 2018 Slide 33

34 Solar Microgrid Proposal for Provident Sunworth Proposed scheme January 25, 2018 Slide 34

35 Structure Assembly Drawing January 25, 2018 Slide 35