Technology For Tomorrow: Preparing for the Long Term...
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Technology For Tomorrow: Preparing for the Long Term Goal SLDC RISE 2017 B. B. Mehta, Chief Engineer, SLDC, Gujarat
Transcript of Technology For Tomorrow: Preparing for the Long Term...
Technology For Tomorrow:Preparing for the Long Term Goal
SLDC
RISE 2017
B. B. Mehta, Chief Engineer, SLDC, Gujarat
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Solar Generation Data Overview
SLDC
Solar Potential in IndiaSLDC
Growth of Solar Power in IndiaSLDC
As on March MW Installed
2010 161
2011 461
2012 1205
2013 2319
2014 2632
2015 3744
2016 6763
2017 12289
161
461
1205
2319
2632
3744
6763
12289
0 2000 4000 6000 8000 10000 12000 14000
2010
2011
2012
2013
2014
2015
2016
2017
MW Installed
Source: CEA/MNRESolar Energy Target by 2022
Ground-mounted Rooftop
100 GW 60 GW 40 GW
Installed Capacity Overview - Gujarat Installed
Capacity
(MW)
State
Sector
Private
Sector
Central
Sector
Wind
FarmSolar Biomass
Mini
HydroTotal
As on 31-03-12 4996 6325 3494 2694 554 31 0 18094As on 31-03-13 4996 7018 5571 3087 857 31 6 21567As on 31-03-14 5496 7423 5811 3352 861 31 9 22982As on 31-03-15 5496 8126 5811 3542 974 41 9 23997As on 31-03-16 5996 8026 5905 3933 1016 41 9 24924As on 31-03-17 5997 8412 6051 5318 1230 41 9 27058
SLDC
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Wind generation 5405 MW
Solar Generation 1262 MW
As on June 2017
483 MW
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Solar Data Management
SLDC
o Web –based Application
o Access to Developer for EASS (Energy Accounting & Scheduling Software)
login through “sldc website”
o User ID & Password – Provided to each Solar Plant
o Solar plants submit the forecast data in MW in 96 blocks
Solar Data Management - Forecasting
SLDC
User can enter the data or upload the file.
o Scheduling Software
o Declare Capacity: Solar DC being verify as per effect given by SLDC
o Entailment: Allocated to concern Discom / Entity as per requisition (Must run)
o Generation Schedule: Generate the schedule for solar plant
Solar Data Management - Scheduling
SLDC
o Scheduling portal on Website
o Day ahead & Intra day (revisions) Declare Capacity / Generation Schedule is
being displayed on website.
o Solar developer can view its DC (with effect given by SLDC) & Generation
schedule accordingly.
Solar Data Management - Scheduling
SLDC
o Energy Accounting Software
o At present, Solar Generation Schedule is being replaced by Actual generation
for Intra-State.
o Injection from Solar energy generation into the grid accounted – as per
Regulations
Solar Data Management - Accounting
SLDC
o Commercial portal on Website
o Weekly accounting / actual generation of each solar plant in 15 minute block
wise is being displayed on website.
Solar Data Management - Commercial
SLDC
Time Block FREQ +6-ILV-GPP-M1 Adjustment Total
1 49.99 -0.0042 0 -0.0042
2 49.97 -0.0042 0 -0.0042
45 50.02 0.8121 0 0.8121
46 50.01 0.8409 0 0.8409
47 49.96 0.8622 0 0.8622
48 50 0.8817 0 0.8817
49 49.96 0.8946 0 0.8946
50 49.95 0.9045 0 0.9045
51 49.98 0.9111 0 0.9111
52 49.98 0.9165 0 0.9165
53 50.05 0.9105 0 0.9105
54 50.01 0.9015 0 0.9015
55 49.97 0.8976 0 0.8976
56 49.93 0.8826 0 0.8826
57 49.91 0.8718 0 0.8718
96 49.93 -0.0045 0 -0.0045
Total 49.957083 26.1447 0 26.1447
Min 49.79 -0.0051 0 -0.0051
Max 50.12 0.9165 0 0.9165
Mus 4.79588 0.026145 0 0.026145
STATE LOAD DISPATCH CENTER - VADODRAENERGY ACCOUNTING OF GPPC(SOLAR) FOR 27-Mar-2017
o Commercial portal on Website
o Monthly SEA (State Energy Account)
o Schedule / Actual energy of solar generation
o Injected / drawl energy in month
Solar Data Management - Commercial
SLDC
o ICCP Server: Inter control center protocol server
o Web Server: SCADA data displayed in public domain
o Application Server: Process the SCADA data
o Data base Server: Data storage & historian & modelling SCADA data
o Replica Server: Interim server for SCADA data display in public
domain
o Patch Management Server: Window patch update for operating
system
o Central Management Server: for diagnostic and analysis of all
operating system logs, events etc.
o NMS Server: Network management and monitoring
Solar Data Management - Storage
SLDC
o DMZ Area: Internal & External
o Firewall : Internal & External
o End user protection
o Encrypted password protection
o 3 tier Authentication per user
Solar Data Management - Security
SLDC
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Solar Data Analytics
SLDC
o Data analytics refers to qualitative and quantitative techniques
and processes used to enhance productivity and business gain.
o Data is extracted and categorized to identify and analyse
behavioural data and patterns.
Solar Data Analytics
SLDC
o Informative & Accounting Deviceo Field level
o DAS meter at STU s/s - recording export and import energy from s/spanels with RS 485 serial port facility
o KW/KWh, KVA/KVAh, KVAR/KVARh and /or PF and Tamper events etc
o 0.5S Accuracy class
o Provision for peak, night & rest hour
o E - watchlite software – fetch the reading
o Solar plant
o ABT meter - 15 minute block wise reading
o MW (15 minute), MVAR (per day cumulative), Frequency
o 0.2S Accuracy class
o Stored reading for 10 days to 35 days
o MRI (Meter Reading Instrument) – for download of ABT reading
Solar Data - techniques and processes
SLDC
Next.. Implementation of 5 Minute scheduling, Metering, Accounting & Settlement !!!!
o Informative & Accounting Deviceo SLDC
o Data collection & analysis tool: VinPlus s/w, VinCom s/w, Smart-grid s/w,
M- cube s/w, Wollaby s/w (Convert MRI file into required software format)
o AMR (Automatic Meter Reading): GSM / GPRS modem installed at ABT
meter for automatic meter reading collection of solar pooling station.
o The data is converted in the prescribed format in MDAS server as per the
requirement and then in to be utilized for accounting.
Solar Data - techniques and processes
SLDC
o E-Payment Mechanism - Commercialo External stakeholders can pay the SLDC charges through E-payment
mechanism for the invoices issued on web portal.
Solar Data - techniques and processes
SLDC
Easy to access by entering Invoice No.
o Real-time Information & Monitoring Device
o Solar plant Level
o Transducer
o STU level
o RTU (Remote Terminal Unit)
o Sub SLDC level
o FEP (Front End Processor) - Capture the solar data from field
o SLDC level
o Solar data transfer through ICCP (Inter Control Centre Protocol) / ISD (Inter
Site Data)
Solar Data - techniques and processes
SLDC
Solar Data - identify and analyse behavioural data and patterns
SLDC
13-07-2016 (1.63 MUs)
14-07-2016 (3.87 MUs)
24-08-2016 (Min Solar energy
received - 1.30 MUs)
17-09-2016 (4.64 MUs)
18-09-2016 (2.75 MUs)
13-03-2017 (Max Solar
energy received - 6.17 MUs),
848.19
06.00 Hrs. 07.00 Hrs. 08.00 Hrs. 09.00 Hrs. 10.00 Hrs. 11.00 Hrs. 12.00 Hrs. 13.00 Hrs. 14.00 Hrs. 15.00 Hrs. 16.00 Hrs. 17.00 Hrs. 18.00 Hrs. 19.00 Hrs. 20.00 Hrs.
Data-base is utilised for analysis and system operation planning.
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Operations Management and IT Integration
SLDC
Solar Data - Operations Management
SLDC
Solar energy in
MUs
1145
1369
1475
1645
1738
2012-13 2013-14
2014-15 2015-16
2016-17
8 t
o 9
9 t
o 1
0
10 t
o 1
1
11 t
o 1
2
12 t
o 1
3
13 t
o 1
4
14 t
o 1
5
15 t
o 1
6
16 t
o 1
7
20
3
27
10 7 6 6 9 18
76
16
2
28
0
86
61
50
50 54
18
0
28
9
58
26
9
29
7
30
9
30
9
30
2
16
7
Hours
Greater than 500 MWH More than 250 MWH & less than 500 MWH Less than 250 MWH
Analysis: High Solar Scenario: Mid February to MayLow Solar Scenario: June to Mid SeptemberAverage Solar Scenario: Mid September to Mid February
Solar Data - Operations Management
SLDC
0
100
200
300
400
500
600
700
800
900
28
31
34
37
40
43
46
49
52
55
58
61
64
67
70
73
76
09-May-17
0
50
100
150
200
250
300
350
400
450
500
27
30
33
36
39
42
45
48
51
54
57
60
63
66
69
72
75
78
08-July-17
Key Issue for system operation:
Generation ramp up in morning and ramp down in evening
Sudden variation in generation due to cloud cover
• Collection & maintain Energy data.
• Developed forecasting mechanism of RE (Wind) & Solar Forecastprovided by Solar Plants / developers.
• Day Ahead Forecasting data of Gujarat demand & RE is beingutilized to plan the RSD of conventional generator.
• Same Day (Intra-day) forecasting of RE is being utilized to pick upand Back down of conventional generation (Tech & Coal Minimum):
planning gas based generation, mainly in peak,schedule of hydro generation,revise schedule for central sector generation
• Accordingly to manage the system demand of Gujarat State.
SLDC
Operations Management
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SLDC
Basic arrangements of Solar Plants Data communications & metering
Generalize Solar Plant Arrangement
• Communication link between Solar Power Station and STU EHV Sub-
Station, where RTU is installed.
• Radio Modem is also provide for point to point speech communication
between Solar Plant and RTU end of GETCO.
• The Radio Modem frequency band is 2.412 to 2.464 GHz which is
Unlicensed Band.
• The total Equipment cost of 1 set is around Rs. 3.5 Lacs for Solar
data acquisition system.
• Developers readily agreed to bear cost including maintenance.
SLDC
Solar Data - IT Integration
Type of
communication
Radio Modem GSM/GPRS
Total Nos. 51 30
• Communication link between Solar Power Station and STU EHV Sub-
Station, where RTU is installed.
• Radio Modem is also provide for point to point speech communication
between Solar Plant and RTU end of GETCO.
• The Radio Modem frequency band is 2.412 to 2.464 GHz which is
Unlicensed Band.
• The total Equipment cost of 1 set is around Rs. 3.5 Lacs for Solar
data acquisition system.
• Developers readily agreed to bear cost including maintenance.
Type of communication Radio Modem GSM/GPRS
Total Nos. 76 3
SLDC
Solar Data - IT Integration
SLDC
Solar Data - IT IntegrationReal time Data Capturing of Solar at SLDC, Gujarat
SCADA LAN
ICCP Server Web Serverwww.sldcguj.com
ICCP Server SCADA Application Server
SCADA LANLEASE
LINE
Front End Server
SCADA Application Server
SCADA
LAN
RTU at GETCO Sub-Station
PLCC Link
IEC- 101/104 Input Gateway
Analog Input
CTTransducerMW, MVAR
PT
Mini RTU
4-20 mA Signal
Step-upTransformer
66 KV Bus
11 KV
GSM/GPRS /MPLS Cloud
IEC- 101/104 Input Gateway
GSM/GPRS /MPLS Modem
4 - 20 mA Signal
TXRX
Data ConcentratorRadio
Modem
2.412 to 2.464 GHz
State Load Despatch Centre, Gujarat
Sub State Load Despatch Centre, (Gandhinagar, Jetpur, Jambuva)
Before May 2015:As per point of connectivity, main meter and check meter wasprovided at sending end and receiving end visa e versa.
After May 2015:Main & Check meter should be provided at receiving end (GETCOEnd).
Type of Meter:“A” Type meter – 0.2S class.“B” Type meter – if connection at and below 33KV level.
Approved meter make : L&T, Secure, Wallaby
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SLDC
Solar Data - Metering arrangement
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Grid Integration Technologies
SLDC
Solar data communication to SLDC
Extent of SCADA terminal for RE Data
• SCADA system is being upgraded the by SLDC (from GE to Alstom).
• Further, installing and maintaining Data acquisition CommunicationSystem through RTU, lease line, radio link etc. is being carried out.
Real time data of Solar pooling stations / solar plants:• Being captured at SLDC.• Monitoring of real time solar generation MW, MVAR at Solar
station and its associated network.• Displayed on SLDC website.
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SLDC
SLDC
Extent of SCADA terminal for RE data
Snapshot of Solar Data (Uttar Gujarat Area)SLDC
Real time data of solar Generations are being monitored through SCADA.
Snapshot of Solar Data (Paschim Gujarat Area)SLDC
Real time data of solar Generations are being monitored through SCADA.
Snapshot of Solar Data (Dakshin Gujarat Area)SLDC
Real time data of solar Generations are being monitored through SCADA.
o Provide weather sensor at solar plant by RE Developer .
o Regulation on RE grid management (Harmonics, Reactive power etc.) complied
by RE developers.
o Submit the static (Name plate data) & variable data (Generation and weather
data – Historical as well as real time) to SLDC by RE developers.
o Monitoring, maintenance and continuity of Real time data of Solar Plant to SLDC
by RE developers.
o Technically sound official who carry out real time action / operation as per
requirement of plant and SLDC instruction.
Way Forward
SLDC
SLDC
• Centralized accurate forecasting (SLDC / RLDC / NLDC & by REDeveloper)
• The transmission constrain right from solar plant to EHV s/s tobe examine case by case and necessary augmentation andstrengthening of lines / upward transmission system to bedecided.
• All RE approvals, now onwards, to be granted only after systemstudy and network development.
Way Forward
SLDC
• CERC may enhance OD / UD limit as per RE variation.
• To overcome, UD / OD draw at State periphery due to RE,Appropriate Authority should facilitated State with cheaper fuelfor meaningful use as balancing.
• The operation of balancing plant for other State, policy to befinalized by Regulatory or appropriate body and RLDC shouldencourage without any additional charges up to transmissioncapacity.
• The energy banking between two State without any financialtransaction is seems to be very viable solution. Only RLDC needto be flexible encourage such transaction.
Way Forward
SLDC
• Preferable location of Balancing Plants - Nearest to Wind Farm /Solar Plants is having Installed Capacity of 100 MW & above.
• AGC control, flexible generation by thermal plant- designparameter to be updated.
• RPO fulfil obligation to be compulsory - with penalty provision
• Increase the REC market
Way Forward
• Balancing through coal plants is not a good solution. Insteadfocus on pump storage
(Total 4786 MW = 2600 MW (working) + 2186 MW (Non working))
• Potential of pump storage in Gujarat
State owned Kadana Hydro Station- 60*4 MW has design capabilityand tail race reservoir already established.
Problem: Vibration is to be resolved (OEM, BHEL)
SSP 200*6 MW RBPH unit has technical capability of pump modeoperation. Tail race reservoir work has been awarded. Problem: Beingmulti State project, consent of each beneficiary is required and allpolicy level issues to be resolved. (NCA is a Nodal Agency)
Regulatory framework for pump mode operation will be requiredfrom Hon’ble commission.
Way Forward
SLDC
• All inoperative (2186 MW) pump mode hydro to be operativeon highest priority with plant wise follow up and monitoring athighest level of MoP, CEA and Utility.
• A research work may be entrusted to IIT like institute forconverting conventional hydro in to pump mode by change inturbine, additional tail race etc. which shall be mandatory infuture with 160 GW RE by 2020 - 22.
• Special focus on large size balancing with multi State beneficiaryeither of existing / inoperative / under construction project isMUST.
• New specially built / commenced balancing project to bedrafted as multi State.
Way Forward
o As prices continue to fall, solar energy is increasingly becoming an economical
energy choice for homeowners and businesses. Still, the biggest hurdle to
affordable solar energy remains the soft costs like permitting, zoning, and
hooking a solar system up to the power grid. (However, solar policy of State is
showing a detail process and certain clarification).
o To achieve 100 GW Solar generation aim by 2022 in effective manner with
safe & secure grid operation, the effective homogeneous co-ordination is
required between Solar Developers and System operators along with
regulatory and Government guidance / guideline.
Conclusion
SLDC
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SLDC
