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

A technology for pumped storage units and excitation systems, applied in the direction of AC network load balancing, etc., can solve problems such as research and rare evaluation methods for the state of auxiliary equipment in excitation systems, to improve accuracy, benefit transient stability, and ensure The effect of a fair distribution

Inactive Publication Date: 2018-01-12
HUAZHONG UNIV OF SCI & TECH
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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.

Method used

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

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0047] figure 1 Shown is a flow chart of the method for evaluating the state of the excitation system of the pumped storage unit provided by the present invention, which specifically includes the following steps:

[0048] According to the operating parameters of the excitation system of the pumped storage unit, the value of each main factor index of the excitation system of the pumped storage u...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28
Inventor 周建中张云程刘涵郑阳许颜贺彭宣霖
Owner HUAZHONG UNIV OF SCI & TECH
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