Author: arunpaiveli

MPPT – Maximum power point tracker

Solar cells have a complex relationship between temperature and total resistance that produces a non-linear output efficiency which can be analyzed based on the I-V Curve.

It is the purpose of the MPPT system to sample the output of the PV cells and apply the proper resistance (load) to obtain maximum power for any given environmental conditions.

MPPT devices are typically integrated into an electrical power converter system that provides voltage or current conversion, filtering, and regulation for driving various loads, including power grids, batteries, or motors.

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Things consumers need to know about ON GRID SOLAR PANEL INSTALLATION with KSEB

  1. KSEB has started giving permissions to install Grid Tied Solar panel installation
  2. Consumers can install 1 kW to 1 MW solar power plants on the premises of their existing connected meters to KSEB
  3. If the consumer has single phase connection then he can install 1 kW to 5 kW solar panels
  4.  For three phase connection can install upto 100 kW
  5.  For 11 kV upto 1MW
  6. Net meters are to be installed to measure the import and export of current. The consumer can either give application to get a net meter or buy themselves but should be tested in the electrical section of KSEB. For the net meter given by KSEB there will  a monthly rental charges.
  7. Bi directional net meter will be used for the billing purpose. if the import of current is more than the export of current from grid, the customer need to pay only for the the amount of current when exported is deducted from imported as per the existing tariff
  8. However if the export of current is more than the import, the amount of current exported after deducting the imported current will be added to the next month account. it will continue in the next month also. Finally every year as of september 30. The period from october 1 to september 30 is considered as settlement period.  if the exported  current is more than the imported, the the KSEB will consider the amount of current exported after deducting imported current as brought from the consumer and will pay at average buying cost of current from external sources.
  9. The consumer can use the net current exported from an existing plant to compensate for the electricity used at a different place where the connection is under the same consumer itself. The consumer should give the priority number in case of applying at more than one place. There will be a dedection of 5 percent considering the distribution loses.
  10. Based on time of day(TOD) system of billing the electricity produced by the consumer will be first counted for the normal period ie from 6am to 6 pm, if still remaining it will be counted as peak time demand ie, from 6 pm to 10 pm, if still remaining it will be considered as consumed at off peak time ie, from 10 pm to 6 am
  11. Solar plants design, build quality, installation, and safe running are consumers responsibility. the solar power plant should be installed and operated as per the regulation named “Technical standards for connectivity for distributed generation resources” in Kerala electricity authority regulation in 2013
  12. The KSEB should be allowed to examine the plant when demanded

 

PERMISSIONS REQUIRED

  1. To tie the solar plant to KSEB grid, the consumer should fill a form and submit in their respective electrical section. The consumer have to pay Rs 1000 as cash or as DD in the name of Assistant Engineer
  2. KSEB will check whether the solar power plant can be tied to the grid within 15 days and will issue a feasibility certificate which have a validity of 30 days. The power plant that can be installed will be of 15 percent of  transformer capacity.
  3. With in 30 days of getting the feasibility certificate, the consumer has to register by submitting the filled registration form and paying a registration fees of 1000 rupees per kW. If the consumer is not able to complete the project within the six months due to valid reasons, an additional time of 6 months will be given. If the reasons are find invalid, the consumer will lose the registration fees otherwise the consumer will be able to withdraw the application and get 80 percent of registration fee back.
  4. With in the given six months the solar power plant has to be installed through a certified wireman/ supervisor/ contractor. if completed within the six months the consumer will get 80 percent registration fees back. after that energisation certificate is needed from electrical inspectorate.
  5. after getting energisation certificate the consumer can apply for testing the plant by KSEB. The testing date will be communicated with the consumer prior to testing. Upon succesful test completion, the consumer will be given a test certificate. After getting it, the consumer should sign net metering agreement with KSEB. The agreement will be based on net metering capacity. after that within 7 days the meter will be fixed and connected to KSEB grid.
  6. if the consumer is interested to buy net meter himself, he has to select it as listed b KSEB and inform their section office to get it tested.
  7. otherwise KSEB will install the netmeter based on a monthly renal.
  8. The solar plant can start working after being tied to the KSEB grid

 

source: from KSEB