Method for evaluating states of excitation systems of water pumping energy storage units

Abstract

The invention discloses a method for evaluating states of excitation systems of water pumping energy storage units. The method includes determining numerical values of various subject factor indexes of the excitation systems of the water pumping energy storage units according to operation parameters of the excitation systems of the water pumping energy storage units; constructing subject factor importance degree matrixes according to importance degrees of the various subject factor indexes and acquiring weights of the various subject factor indexes according to the subject factor importance degree matrixes; acquiring evaluation values of the excitation systems of the water pumping energy storage units according to the numerical values of the various subject factor indexes and the weights of the various subject factor indexes. The subject factor indexes comprise voltage stability factors, dynamic stability factors, typical working condition factors and critical temperature factors. Themethod has the advantages that complete comprehensive state evaluating models are built for the excitation systems of the water pumping energy storage units, accordingly, the states of the excitationsystems of the water pumping energy storage units can be scientifically and objectively evaluated by the aid of the method, and the method has guiding significance in the aspects from planned maintenance to state maintenance on the water pumping energy storage units.

Description

technical field [0001] The invention belongs to the field of state evaluation of auxiliary equipment of a hydroelectric generating set, and more particularly relates to a method for evaluating the state of an excitation system of a pumped storage generating set. Background technique [0002] With the promotion of clean and low-carbon energy in my country, the construction of pumped storage power stations is in a trend of large-scale. With its unique operating characteristics of peak regulation and valley filling, pumped storage power stations play an important role in load regulation, energy conservation and emission reduction, and maintenance of safe and stable operation of the power grid. In order to ensure the safe and stable operation of the power grid and promote the dynamic stability of the power grid, it is of great significance to carry out the research on the operation status evaluation of pumped storage units. [0003] However, the existing research on the state a...

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Problems solved by technology

[0003] However, the existing research on the state assessment of pumped storage units mainly focuses on the unit and its speed control system, and there is little research on the state assessment method for the auxiliary equipment of the excitation system.

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