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Multi-mode switching hydroelectric generating set speed regulation system control method and system

A technology of hydroelectric unit and speed control system, applied in the field of electric power system, can solve the problems that it is difficult to fully reflect the unit, the primary frequency regulation model is not accurate enough, etc.

Pending Publication Date: 2021-06-08
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

[0005] The embodiment of the present disclosure provides a multi-mode switching hydroelectric unit speed control system control method and system to at least solve the problem in the prior art that the primary frequency regulation model in the analysis and calculation of the current power system is not accurate enough to fully reflect the normal regulation of the unit Problems in the process, and the control model of the speed control system is mostly power mode and opening mode. Although it can meet the frequency regulation of the unit in most cases, there are few technical problems in the study of switching from normal operation mode to isolated grid mode.

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  • Multi-mode switching hydroelectric generating set speed regulation system control method and system
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  • Multi-mode switching hydroelectric generating set speed regulation system control method and system

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[0015] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0016] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a multi-mode switching hydroelectric generating set speed regulation system control method and system. The method comprises the following steps: according to pre-collected power grid parameters, determining a unit frequency omega and a large grid frequency omega0; determining a switching condition according to the unit frequency omega and the large grid frequency omega0; selecting an opening mode, a power mode or an isolated network mode according to a grid-connected operation mode; and when the switching condition is met, switching the opening mode or the power mode into the isolated network mode.

Description

technical field [0001] The present application relates to the technical field of power systems, in particular to a control method and system for a multi-mode switching hydroelectric unit speed regulation system. Background technique [0002] With the formation of regional interconnected power grids, the influence of the primary frequency regulation of hydropower units on the stability control of the power system has become very sensitive, especially the control characteristics, load characteristics, and response time of the primary frequency regulation have a significant impact on the frequency and active power stability of the networked system. . [0003] The primary frequency regulation is the control of the power grid by the frequency / power characteristics of the regulating system of the hydroelectric unit. It is realized by the frequency / power static characteristics of the governor through the proportional-integral-derivative (PID) adjustment characteristics of the gover...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 王官宏李莹艾东平魏巍张健李文锋巴桑格桑晋美王晖
Owner CHINA ELECTRIC POWER RES INST
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