COMPENSATION OF REACTIVE POWER BY INDUSTRIAL SOLAR POWER PLAT AND INFLUENCE OF THIS PROCESS ON THE CENTRAL ELECTRIC NETWORK

Keywords: reactive power, voltage, coefficient of nonlinear distortions, active power, power factor, dynamic regulation.

Abstract

The control of reactive power can be considered one of the least investigated problems in the photoelectric industry, it can give the key to a significant increase in the profit of owners of industrial solar power plants.

This article describes the effect of compensation of reactive power on the industrial FES power at the technical conditions of 9 MW. Inverter equipment: Kstar 500 kW, solar panels Talesun 270 W. In DSTU  8635: 2016 there are requirements for the possibility of regulation of reactive power by industrial SES. In accordance with this standard, the industrial SES must adjust its power factor from 0.8 to 1 in accordance with the requirements of the central network. Also, this article describes the effect of compensation of reactive power on the quality of electric energy in the 35 kV line. Also, in accordance with: the NERCP regulation dated March 14, 2018, No. 312, on the rules for calculating reactive power, the client shall compensate the energy-transmitting company for losses due to the flow of reactive power.

The article describes the algorithm for verifying the bias tact at the level of the connection point to the central electic network. It consists in managing the inverter equipment through the ModBus TCP protocol. Each inverter has a manufacturer-programmed register of foreign-type teams. By sending a command through the information bar to the desired registry, the inverter can execute an action or pass parameters, according to the  type of registry  that is sent to the comand. The inverter  starts copencing  the reactive power when it receives a command in the register which corresponds to the value of the power factor. Computation for compensation is read from the device for analyzing the quality of the electrical network in the input cell. The read value is processed by the server and sent to the inverter. Using reactive power compensation, customer losses due to jet power flow are reduced to a minimum value. Ref. 10, tab. 3, fig. 3.

Author Biography

М. Bordakov, Institute of Renewable Energy of the National Academy of Sciences of Ukraine 02094, 20А Hnata Khotkevycha St., Kyiv.

bordakov.jpgAuthor information: postgraduate student Institute of Renewable Energy of the National Academy of Sciences of Ukraine.
Education: In 2016, the NTUU «Igor Sikorsky KPI», specialty: electrical engineering and electrotechnology. Get a degree: junior research engineer.
Research area: solar energy, hardware part of solar panel inverter.
Publications: 2

References

1. Postanovleniye NKREKP №312 ot 14.03.2018. [NERCP Resolution № 312 dated March 14. 2018]. Retrived from http://www.nerc.gov.ua/?id=31833 [in Ukrainian].
2. DSTU 8635: 2016. Ploshchadki dlya fotoelektricheskikh stantsiy prisoyedineniya stantsiy k elektroenergeticheskoy sistemy. [DSTU 8635:2016. Surfaces for photoelectric stations connection of stations to the electrical energy system]. Retrived from
http://eom.com.ua/index.php?action=downloads;sa= downfile&id=3656 [in Ukrainian].
3. Reactive Power Interconnection Requirements for PV and Wind Plants. Recommendations to NERC. Retrived from https://prod-ng.sandia.gov/techlib-noauth/access-control.cgi/2012/121098.pdf [in English].
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6. Campbell M., Aschenbrenner P., Blunden J., Smeloff E., Wright S. The drivers of the levelized cost of electricity for utility-scale photovoltaics. SunPower Corp. 200. [in English].
7. Zhou J. and Gole A. VSC transmission limitations imposed by AC system strength and AC impedance characteristics. in Proc. 10th IET International Conference on AC and DC Power Transmission (ACDC). 2012. Pp. 1-6. [in Eng-lish].
8. Collins L. and Ward J. Real and reactive power control of distributed PV inverters for overvoltage prevention and increased renewable generation hosting capacity. Renewable Energy. 2015. vol. 81. Pp. 464-471. [in English].
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10. Molina-Garcia A., Mastromauro R. A., Garcia-Sanchez T., Pugliese S., Liserre M., Stasi S. Reactive power flow control for PV inverters voltage support in LV distribution networks. IEEE Trans. Smart Grid. Jan. 2017. Vol. 8. No. 1. Pp. 447-456. [in English].

Abstract views: 105
PDF Downloads: 108
Published
2019-03-18
How to Cite
BordakovМ. (2019). COMPENSATION OF REACTIVE POWER BY INDUSTRIAL SOLAR POWER PLAT AND INFLUENCE OF THIS PROCESS ON THE CENTRAL ELECTRIC NETWORK. Vidnovluvana Energetika, (1(56), 31-35. https://doi.org/10.36296/1819-8058.2019.1(56).31-35