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Power grid frequency modulation control method and device

A control method and technology of grid frequency, applied in circuit devices, electrical components, AC network circuits, etc., can solve the problems of reverse frequency modulation and reverse frequency modulation action direction.

Active Publication Date: 2019-07-23
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This application provides a power grid frequency modulation control method and device to solve the problem in the related art that the primary frequency modulation and secondary frequency modulation are carried out independently, and the direction of the frequency modulation action is easily reversed, resulting in reverse frequency modulation.

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  • Power grid frequency modulation control method and device
  • Power grid frequency modulation control method and device
  • Power grid frequency modulation control method and device

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0025] It should be noted that the terms "first" and "second...

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Abstract

The invention discloses a power grid frequency modulation control method and device. The method comprises the steps that based on the set power generation power of power grid secondary frequency modulation, the actual power generation power of a generator and the rotating speed difference between the set rotating speed and the actual rotating speed of a steam turbine, the load capacity needing tobe adjusted of the generator is determined, wherein the steam turbine provides power for the generator; the steam flow of the steam turbine is adjusted based on the load needing to be adjusted of thegenerator; after the steam flow of the steam turbine is adjusted, the power grid frequency is obtained, and a primary frequency modulation load is calculated based on the power grid frequency; and theoperation of the boiler is adjusted based on the primary frequency modulation load, to complete the primary frequency modulation action of the power grid. Through the method and the device, the problem of reverse frequency modulation easily caused by opposite frequency modulation action directions due to independent primary frequency modulation and secondary frequency modulation in related technologies is solved.

Description

technical field [0001] The present application relates to the technical field of power grid frequency modulation, and in particular, to a power grid frequency modulation control method and device. Background technique [0002] The Electric Power Industry Law stipulates the frequency error rate of the power grid. In order to reduce the frequency difference, the power grid realizes secondary frequency regulation through the AGC function of the unit and the frequency modulation unit to keep the frequency of the power grid stable. However, DEH is required for rapid and small load changes in the power grid. , The steam turbine digital electro-hydraulic regulating system monitors the change of the speed without changing the load set point, changes the power of the generator, adapts to the random change of the grid load, ensures the stability of the grid frequency, and realizes primary frequency regulation. [0003] In order to improve the operation and management level of grid-con...

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Application Information

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IPC IPC(8): H02J3/24H02J3/38H02J3/46
CPCH02J3/24H02J3/381H02J3/46H02J2203/20
Inventor 鲍天恩张龙朱文义高春阳吴宝杨李艳龙郭爽李丁强洪光
Owner CHNA ENERGY INVESTMENT CORP LTD
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