Coordinated reactive voltage control method of different reactive compensation devices of wind power delivery

Abstract

The invention provides a coordinated reactive voltage control method of different reactive compensation devices of wind power delivery. The method comprises the following steps that a coordinated control principle for FACTS and routine reactive compensation devices is determined; simulated analysis is carried out on the bus voltage fluctuation characteristic of a power transmission channel; a reactive voltage control flexibility matrix of the FACTS and routine reactive compensation devices is determined; and a reactive voltage optimization module of the FACTS and routine reactive compensation devices is established and solved. According to the method provided by the invention, characteristics of different compensation devices can be performed, the bus voltage fluctuation of the transmission channel caused by wind power change is controlled within a reasonable range, and the acceptance of wind power is further improved on the premise that the safety of the electrical network is ensured.

Description

technical field [0001] The invention relates to a control method, in particular to a coordinated reactive voltage control method for multi-type reactive power compensation equipment sent out from wind power. Background technique [0002] In order to achieve the grand energy strategy of low-carbon, environmental protection, green and sustainable development, my country has vigorously developed renewable energy in recent years, and has issued a series of standards and policies for renewable energy, giving strong support at the national level. Renewable energy has achieved rapid development. Especially for wind power, several million-kilowatt wind power bases in my country have been completed and connected to the grid for operation, and the planned eight million-kilowatt wind power bases are also being gradually constructed. The development mode of wind power in my country is different from that of foreign countries. Large-scale centralized access, high-voltage long-distance tra...

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Problems solved by technology

[0003] Large-scale wind power output has intermittent and strong randomness. Changes in wind power output will affect the reactive power distribution of the outgoing AC transmission channel, thereby changing the bus voltage of the transmission channel. The overall performance is that as the wind power output changes, the bus bar of the transmission channel The voltage fluctuates accordingly. At the same time, since wind power is mostly connected to remote areas, the grid frame of the outgoing channel is relatively weak and the short-circuit capacity is small. Issues such as limited operation risk and increased difficulty in controlling reactive power and voltage after large-scale wind power access will become prominent

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