Difference adjustment coefficient setting method of generator excitation system considering all operating manners of power grid

Abstract

The invention relates to a difference adjustment coefficient setting method of a generator excitation considering all operating manners of a power grid. The method is characterized by comprising the following steps of: building a power grid load flow computing model: equating an external power grid, acquiring power grid topology and equipment parameters and determining each generator model; acquiring historical operating data containing all operating manners of the power grid; obtaining the corresponding relationship between busbar voltage of each transformer substation and the difference adjustment coefficient of the generator excitation system; proposing a scheme for setting the difference adjustment coefficient of the generator excitation system, which meets the operating requirement of power grid voltage, etc. Through adoption of the method, the difference adjustment coefficient of each generator in the power grid can be set so as to ensure that the busbar voltage of each transformer substation meets the operating requirement of the power grid in the all operating manners of the power grid. The method is scientific, reasonable, high in practicability, good in application effect, etc.

Description

technical field [0001] The method for setting the difference adjustment coefficient of the excitation system of the generator considering the full operation mode of the power grid is mainly applied in the fields of reactive power optimization of the power grid, economic dispatch of the power grid, and the like. Background technique [0002] The adjustment coefficient of the generator excitation system refers to the ratio of the generator terminal voltage variation to the generator reactive power variation, and the adjustment coefficient determines the generator reactive voltage regulation characteristics. During the continuous operation of the power grid, the adjustment coefficient of the generator excitation system not only affects the reactive power distribution of parallel units, but also is an important factor affecting the local power grid voltage. Reasonably setting the adjustment coefficient can give full play to the automatic continuous reactive power adjustment abil...

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Problems solved by technology

So far, the research on the adjustment coefficient of the excitation system at home and abroad mainly involves the influence of the adjustment coefficient on the stability and the optimization method of the adjustment coefficient with the goal of minimizing the network loss under a single operation mode. There is no research on the full operation mode of the power grid to meet the Adjustment Coefficient Setting Method for Power Network Operation Requirements

At present, the adjustment coefficient of generator excitation system in each power plant generally only considers the reactive power distribution of parallel units, and does not consider the impact of different adjustment coefficients on the operating voltage of the power grid. The determination of the adjustment coefficient of the generator excitation system has not been clearly defined. setting standards and basis

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