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Power grid frequency primary frequency modulation control system

A technology for coordinating the control system and grid frequency, applied to electrical components, circuit devices, AC network circuits, etc., can solve the problems of low safety and reliability of the grid, improve safety reliability and power generation quality, improve regulation accuracy, and improve response speed effect

Pending Publication Date: 2021-05-28
SHENHUA SHENDONG POWER
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Problems solved by technology

[0005] The embodiment of this specification provides a grid frequency primary frequency modulation control system to solve the problem of low grid security and reliability caused by the existing grid frequency primary frequency modulation

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  • Power grid frequency primary frequency modulation control system
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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of this specification clearer, the technical solution of this specification will be clearly and completely described below in conjunction with specific embodiments of this specification and corresponding drawings. Apparently, the described embodiments are only some of the embodiments in this specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this specification.

[0033] The technical solutions provided by each embodiment of this specification will be described in detail below in conjunction with the accompanying drawings.

[0034] refer to figure 2 , figure 2 It is a schematic diagram of the circuit structure of the grid frequency primary frequency modulation control system according to the embodiment of this specification.

[0035] Primary fre...

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Abstract

The embodiment of the invention discloses a power grid frequency primary frequency modulation control system which comprises a coordination control system, the coordination control system comprises a first adder, a locking device and a first controller, and the first adder is used for receiving a rotating speed signal of a steam turbine, calculating a frequency difference value between a real-time power grid frequency corresponding to the steam turbine rotating speed signal and a target power grid frequency so as to output a primary frequency modulation load instruction; the locking device receives the primary frequency modulation load instruction and is used for locking the automatic power generation control load instruction when the automatic power generation control load instruction and the primary frequency modulation load instruction change reversely; and the first controller is connected with the locking device and is used for carrying out first coordination control on the real-time power grid frequency according to the automatic power generation control load instruction and the primary frequency modulation load instruction. The power grid frequency primary frequency modulation control system can improve the response speed of primary frequency modulation and improve the safety and reliability of a power grid.

Description

technical field [0001] This specification relates to the field of safe operation of steam turbines, and in particular to a control system for primary frequency regulation of grid frequency. Background technique [0002] In recent years, with the increase of power grid capacity, the impact of new energy on coal-fired power generation, and the technological innovation of smart grid, the power grid has also put forward higher requirements for power generation quality and power system security on the power side, including coal-fired power generation. The unit's primary frequency regulation performance puts forward new requirements. [0003] Such as figure 1 As shown, the traditional primary frequency modulation control program has a set of rotational speed corresponding to the primary frequency modulation function ( figure 1 ② and ⑦), after receiving the turbine speed signal, input the corresponding adder ( figure 1 In ① and ⑥), calculate the speed and network frequency devia...

Claims

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Application Information

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IPC IPC(8): H02J3/24H02J3/38
CPCH02J3/38H02J3/241
Inventor 李金鹏赵文亮李书伟吴锡鹏王立田伟
Owner SHENHUA SHENDONG POWER
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