On-Grid Solar and Kerala State Electricity Board (KSEB )


30-04-21- Feasibility application submitted to KSEB Kozhencherry section 
07-07-21- Feasibility report generated by system 
28-07-21- Feasibility report received in hand 
19/07/21- Advance Payment to Solar installer (Pravasi Est)
20/07/21- Fabrication work started 
26/07/21- Installation completed 
28/07/21- Application for Solar testing to KSEB submitted
    --Followed-up with KSEB Kozhencherry section AEE several times during this period. AEE said that the sub engineer (Mr. Unnikrishnan was on 2 months of leave due to medical reasons)

04/10/21- Contacted CGRF & Pathanamthitta division office 
8/10/21- Request for Meter testing forwarded to TVA meter testing division 
22/10/21- Inspection Officer (Mr. Pradeep) from Meter testing division inspected premise and commented that the manual isolator is missing and sped away
29/10/21 - Request for re-inspection after rectifying issue (installed manual isolator) submitted to Kozhencherry Section 
    --1/11/21- F/up with Koz Section AEE , she said she was on leave for 2 days and that they are busy with Month beginning meter reading. 

10/11/21- Second site inspection conducted and readings taken 
    -- Readings taken after starting the plant
    -- Readings taken after switching of the plant and inverters (both regular and solar off-grid inverter)


12/11/21 - Followed up with PTA division office via Email and they acknowledged and reverted that the Report was forwarded to Kozhy section on 10th Nov itself 

15/11/21- Visited Kozhencherry Section office AEE and told her that the report has been forwarded by PTA division office. She looked-up email as per the aforementioned date and found the report. And asked me to handover the Net Meter along with the testing report to feed the serial to the system. Madam promised that the sub engineer will visit the site this afternoon or tomorrow to install the new meter after testing and the old meter will be taken back. 

17/11/21- Received call from Kozhencherry section Sub Engr . Unnikrishnan asking if I had applied for Solar . Told him the background , and he said he has the Net meter that was handed over and will arrange to get this installed next day.


18/11/21- KSEB staff Mr. Yashodaran (Overseer) came with the Net meter to install . He was asking about contract . I said this is not a KSEB subsidized scheme and has nothing to do with Soura scheme. Also told him that I had met AEE Madam and all the reports were cleared from PTA division.

He then commented that the Solar meter will need to be located next to the Net meter as they take reading of both these. 

Called up Benny (Installer) and informed him , he said he will arrange someone tomorrow to relocate the Solar meter from terrace.


19/11/21 - Solar meter box along with its MCB was relocated from the terrace and installed next to Main meter box first half itself.







We called the Overseer and he had come along with the Net Meter and installed it.





Pravasi Est Quotes & Payments


3KW Grid Tie Quote - 1.95L
Fabrication cost - 33,000/-
Off grid (2 panel + Two 220AH Battery  ) = 68,000/-







Transactions:

Advance Payment (bank transfer)-1,45,000
Fabrication (cash) -11,000
Final Settlement (bank transfer)- 1,40,000
Additional payment handed along with Solar testing charges- 4,500
Last clearance - 3000
------------------------------

Total paid to Pravasi Est for Solar project- 3,03,500/-


Calculation break-ups:

Ongrid Solar = 1,95,000
19.7.21- 1,45,000 (paid)
------------------------------
Off grid Solar = 15,500 X 2 (Panels) + 18500 x 2 (Battery)  + Installation (10,000) = 78,000
--------------------------------

Fabrication = 24,700 + 8000 = 33,000
20.7.21- 6,000
21.7.21- 2,000
22.7.21- 3,000
--------------
paid- 11,000

---------------------------
Total -195000 + 57000 + 33000 = 2,85,000
Paid - 156000
Balance - 1,29,000
------




KSEB charges - 

Feasibility testing - 1,250
Solar testing charges (Rs 1000/ KW)- 3000
Total =  4,250/-



Youtube link




Refer KSEB circular





Solar Grid inverter KSEB parameters

Protections:

1. Over voltage: both input and output 

OV-G-V1: 264.0V
OVGV1-T: 0.20S
OVGV2:264V
OVGV2:0.20S
UN-GV1-192V
UNGV2-T:0.20S

P.S: The voltage-operating window should minimize nuisance tripping and should be under operating range of 80% to 110% of the nominal connected voltage. beyond the clearing time of 2 seconds, the Photovoltaic system must isolated itself from the grid


2. Over / Under grid frequency

OVGF1-50.50HZ
OVGF1-T:0.20S
OVGF2-47.50HZ
OVGF2-T:0.20S

P.S: When the distribution system frequency deviates outside the specified limits (50.5 Hz on upper side and 47.5 Hz on lower side) up to 0.2 sec, the Photovoltaic systems shall automatically disconnect from grid and be in island mode.


STARTUP TIME: 60S
RESTORE TIME: 60S


RECOVER-FH: 264v
RECOVER-VL: 192V
RECOVER FH- 50.50HZ
RECOVER FL- 47.50HZ



References:

https://youtu.be/gL89BVhdKpk

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