Voltage safety evaluation method and voltage safety evaluation system of power system

A power system and safety assessment technology, applied in the direction of electrical components, electrical digital data processing, special data processing applications, etc., can solve difficult problems such as transient safety of power systems, and achieve real-time online safety evaluation saving and good real-time performance , the effect of small amount of simulation calculation

Active Publication Date: 2016-11-09
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a voltage security evaluation method and system for power systems to address the shortcomings of existing technologies that are difficult to accurately analyze the transient security of power systems online in real time

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  • Voltage safety evaluation method and voltage safety evaluation system of power system
  • Voltage safety evaluation method and voltage safety evaluation system of power system
  • Voltage safety evaluation method and voltage safety evaluation system of power system

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Embodiment Construction

[0056] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0057] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical featu...

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Abstract

The invention relates to a voltage safety evaluation method and a voltage safety evaluation system of a power system. The voltage safety evaluation method comprises the steps that a plurality of preset operation ways satisfying preset operation conditions are acquired, and a state variable set corresponding to every preset operation way is generated; safety performance of transient voltage corresponding to every preset operation way is evaluated according to a preset fault set; linear fitting of state variable sets of a plurality of target operation ways is carried out to acquire a fitting weight coefficient corresponding to every target operation way; according to the fitting weighting coefficients corresponding to the plurality of target operation ways and the transient voltage safety performance, the transient voltage safety index of the power system in a current operation way is calculated. The voltage safety evaluation method and the voltage safety evaluation system of the power system are advantageous in that the voltage safety index of the current operation way is evaluated in a real-time manner; real-time performance is good, and a simulation calculation amount is small; and real-time on-line safety evaluation is realized, and calculation resources are saved.

Description

technical field [0001] The invention relates to the technical field of power distribution, in particular to a voltage safety evaluation method and system for a power system. Background technique [0002] In recent years, with the development of industry and economy, the scale of the power system has been increasing, the structure has become more complex, and the uncertainty of its operation has also been increasing. For example, there are more types of faults in the power system, the fault process is more complex, and the impact of the fault on the safety of the power system is also greater. Security threats to ensure the safe operation of the power system. [0003] In the prior art, there are two methods for evaluating the safety of power systems: one method is to use electromechanical transient simulation programs to analyze the transient characteristics of power systems, but electromechanical transient simulations are only applicable to devices in traditional power grids...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J5/00G06F17/50
CPCG06F30/20H02J5/00
Inventor 刘俊磊杨银国郭庆来孙宏斌钱峰伍双喜王彬葛怀畅赵文禄牛涛
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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