Reactive power balance adjustment method for power generation and utilization system

Abstract

The invention relates to a reactive power balance adjustment method for a power generation and utilization system. The method takes two incoming lines of a transformer substation as economic adjustment balance base points for unified balance and comprehensive utilization of reactive power of the power generation and utilization system, analyzes the reactive power generated by the generator set on each section of bus of the transformer substation, the power factor of the power utilization system of each section of bus, the distribution of the large synchronous generator set, the operation mode of the system and other overall conditions according to power factor adjustment targets and requirements of the transformer substation, calculates the reactive power overall demand, the reactive power available adjustment amount and the most economical compensation amount, and then selects different dynamic balance adjustment and compensation methods according to different reactive power demands of the system to uniformly balance reactive power distribution of the whole power generation and utilization system. The method is suitable for reactive power adjustment balance and power factor control of substations with secondary energy comprehensive utilization generator set grid connection and power generation and utilization systems coexisting in all large enterprises.

Description

Technical field: [0001] The patent of the invention relates to the reactive power adjustment balance and power factor control of substations where all large-scale enterprises have secondary energy comprehensive utilization generator sets connected to the grid and power generation and power consumption systems coexist, and belong to the technical field of power system reactive power adjustment. Background technique: [0002] Power factor is a very important economic and technical index of each substation and the entire power system. If the power factor is too low, it will not only increase the loss of power supply lines, but also reduce the utilization rate of equipment. If the power factor is lower than 0.85, it will be assessed by the power supply company. , adding a large amount of power factor adjustment electricity bills, so the adjustment and control of power factor is very important for each substation. Especially at present, almost all major iron and steel companies h...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a quick operation method for reactive power balance adjustment of power generation and consumption systems, so as to solve the problems in the existing monitoring system. The existing monitoring system lacks reactive power balance adjustment data. During the monitoring process It is necessary to manually complete the calculation of the data, which consumes a lot of manpower, and it is inconvenient to monitor and balance the reactive power of the power generation and consumption system. However, due to the uneven technical skills and professional knowledge of the personnel on duty, some people do not even know how to do it. Good reactive power balance adjustment may cause long-term low power factor and be punished by the power supply company, resulting in power factor adjustment electricity bills, which is very unfavorable to the comprehensive utilization of secondary energy

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