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Method and system for analyzing transient stable state and operation state of power system

A power system, transient stability technology, applied in the field of power system

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Problems solved by technology

[0003] However, despite the rapid development of device hardware technology, it still cannot meet the real-time requirements and make accurate decisions. Therefore, the control method of "offline decision-making and real-time matching" is still mainly used in engineering applications.

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  • Method and system for analyzing transient stable state and operation state of power system
  • Method and system for analyzing transient stable state and operation state of power system
  • Method and system for analyzing transient stable state and operation state of power system

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Embodiment Construction

[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] Maintaining stability is a necessary condition for the power system to be in a normal operating state. The various operating modes of the power system are meaningful only under stable conditions, and only under stable conditions can we talk about the quality of power supplied to users. For security and stability analysis, transient stability analysis is a basic aspect. Being able to maintain transient stability is the premise of analyzing and evaluating the operating status and safety level of the system, and in the workload of power grid security and stability calculation and analysis, transient Stable computing occupies a large proportion. Therefore, the study of...

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Abstract

The embodiment of the invention provides a method and system for analyzing the transient stable state and operation state of a power system. The method comprises the steps that: a generator power characteristic equation set of the power system is constructed; a generator power characteristic during normal operation of the power system, a generator power characteristic during a short-circuit faultof a line and a generator power characteristic after the cut-off of the fault line are constructed, and a corresponding power characteristic curve is drawn; and based on the power characteristic curve, a control strategy for maintaining the transient stable state of the power system is analyzed. According to the embodiment of the invention, the control strategy capable of keeping the transient stable state of the power system is found out by analyzing the power characteristics of the generator of the power system in different states, so that good normal operation of the power system is kept.

Description

technical field [0001] The present invention relates to the field of power systems, and more specifically, to a method and system for analyzing the transient state and operating state of a power system. Background technique [0002] The power system stability control can increase the transmission capacity of the existing lines on the premise of ensuring the stable operation of the power system, and relieve the pressure on the power supply constraints of the existing grid structure to a certain extent, so the power grid stability control system has been widely used . At present and in the future, regional stability control will still be the main body of stability control. [0003] However, despite the rapid development of device hardware technology, it still cannot meet the real-time requirements and give accurate decisions. Therefore, the control method of "offline decision-making and real-time matching" is still mainly used in engineering applications. Therefore, it is st...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/24
CPCH02J3/001H02J3/24
Inventor 王鑫陈海东李江鹏李涛朱仔新白鹭田坤王勇张静忠李金东杨龙孙原高任龙杨宏秦建翔蒙飞田波王庆刘刚徐建忠钟当书孙阳周良松姚占东