A high-reliability distribution network system with new energy power supply

Abstract

The invention discloses a high-reliability power distribution network system containing new energy sources, which includes a main feeder connected to the main power supply, a plurality of main feeder load branches connected in parallel on the main feeder, and adjacent main feeder load branches are provided with Isolating switch; multiple secondary feeder load branches are connected in parallel on the secondary feeder, and an isolating switch is set between adjacent secondary feeder load branches. In the feeder isolation area, the tail end of the secondary feeder isolation area is connected to the output end of the wind-solar-storage combined system; the first end of the main feeder is equipped with a circuit breaker, and the load support of the main feeder between this circuit breaker and the contact switch closest to it The head-end main feeder isolation area is formed by the main feeder line, and the other load branches on the main feeder line between two adjacent tie switches form multiple main feeder isolation areas. The tail feeder of each main feeder isolation area and the output end connection. The invention can improve system reliability and realize better economic and environmental benefits, and has good application prospects.

Description

technical field [0001] The invention relates to the field of system layout for connecting new energy power sources to distribution networks, in particular to a highly reliable distribution network system including new energy power sources. Background technique [0002] With the rapid development of my country's industrialization and economy, the problems of greenhouse gas emissions and environmental pollution caused by fossil energy consumption have become more and more significant. On the one hand, carbon dioxide emissions in many regions, especially developed cities, are increasing, and air pollution is becoming more and more serious. On the other hand, the rapid development of cities has led to an increasing demand for energy, among which the demand for electric energy is an item that cannot be ignored. In the reform of the power system, the improvement of the power grid structure has played a key role in reducing power shortages and improving the reliability of the powe...

AI Technical Summary

Problems solved by technology

[0003] At present, my country's power grid structure is still dominated by traditional coal power generation, and there are many problems: coal resources are exhausted, thermal power generation produces a large amount of air pollutants; large hydropower stations are concentrated in the western region, and power transmission is difficult; new energy power generation is just starting stage, the energy utilization is less; densely populated cities have tight power supply, and there is a large power shortage; the power grid construction in remote areas is not perfect, and power supply cannot be supplied

Large-scale energy storage installations are expensive and have low utilization rates

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