The Design And Research Of The 10MW Photovoltaic Power Plant And Network Engineering Of Lankao County In Henan Province

With the rapid development of Kaifeng, Henan Lankao region of rapidly rising living standards and industrial economy, people is growing demand for energy. Energy shortage and environmental pollution worldwide has become two important factors restricting the sustainable development of human society, to develop new alternative energy sources has become imperative. As a new energy production method of solar power, its no pollution, no noise, easy maintenance, etc. shows very broad space for development and application prospects. The power balance of Lankao region shows that the region has been unable to meet the load requirements of the substation, in order to ease the load pressure, while increasing regional power grid safety and reliability, combined with the actual Lankao local conditions, proposed the building of 10 MW photovoltaic power plants.This paper introduces the level of economic and power development of Kaifeng, Henan Lankao region. The station’s address were selected, considering lighting conditions of the station site, address conditions and convenient transportation, etc., to verify the reasonableness of the site selection. Photovoltaic power plant in order to position the power system, power plants and scale recently, the importance of the development of long-term load classification is based, initially identified qualifying back a few substations, number of units, the main equipment selection and other issues; again calculated from the electrical access scheme, the main electrical wiring, main transformer capacity and over-voltage, ground fault protection and other aspects of the overall system of the substation are discussed, and reached the rational design; then for photovoltaic power plants and networks common islanding issues detailed analysis, elaborated the concept, proposed a reactive power control based islanding detection method; Finally, the protection and control of photovoltaic power plants PV power plant system, highlighting the electrical equipment for the photovoltaic power plant operation and monitoring, environmental computer monitor real-time monitoring system, as well as the content elaborated power dispatch automation and power communication and other aspects.