Province-prefecture cooperation voltage control method based on supply district optimization

Abstract

The invention relates to a province-prefecture cooperation voltage control method based on supply district optimization, which comprises cooperation control modeling and cooperation real time control; the cooperation control modeling is based on the power grid model cloud technology and comprises the steps of controlling a 220kV transformer station low voltage side capacitor / reactor reactive power directly by a provincial power grid dispatching mechanism, and controlling a 220kV transformer station middling voltage side gateway reactive power in a cooperative way in combination with a prefectural power grid dispatching mechanism. According to the method, the provincial power grid dispatching mechanism side power plants and 220kV transformer stations in close electrical distance are divided into the same control zone; by analyzing the supply district optimization model formed by a generating set, a capacitor / reactor and a middle voltage side generalized set, the province-prefecture two-grade power grid reactive power source is directly optimized and distributed, thereby raising control strategy calculating accuracy and low voltage side capacitor / reactor response speed, and satisfying load intensive area power grid and requirement for control speed by the new energy access area power grid better.

Description

technical field [0001] The invention belongs to the technical field of power system control, and in particular relates to a land-saving cooperative voltage control method based on partition optimization. Background technique [0002] Based on the characteristics of reactive power layering (voltage layer) and partitioning (power supply area), reactive power voltage control generally adopts a layered and partitioned control system. The provincial power grid dispatching organization (referred to as the provincial dispatch) is responsible for the voltage control of the 220kV-level power grid, and the regional power grid dispatching institutions (referred to as the local dispatch) are responsible for the voltage control of the 110kV and below-level power grids. The provincial and local power grids realize coordinated control at the dispatching boundary. At present, domestic provincial power grids and regional power grids have information locality. There are many nodes and low vol...

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Problems solved by technology

[0004] Due to the limitations of provincial power grid and regional power grid modeling, the above documents all take the high voltage side of the 220kV transformer as the coordination gateway, and the provincial regulator cannot directly carry out control decision calculations for the capacitors / reactors on the low voltage side of the 220kV substation

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