A Simulation Method of Frequency Fluctuation in Power System with Long Time Scale

A long-term scale, power system technology, applied in the field of power systems, can solve problems such as poor power grid economy, slow power system frequency simulation speed, and poor operation safety of power equipment, so as to improve the utilization rate, improve the safety of power equipment operation, Overcome the effect of slow simulation speed

Active Publication Date: 2017-06-06
STATE GRID CORP OF CHINA +3
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  • Abstract
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Problems solved by technology

[0015] In the process of realizing the present invention, the inventor found that there are at least defects in the prior art such as slow power system frequency simulation speed, poor operation safety of power equipment, and poor grid economy

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  • A Simulation Method of Frequency Fluctuation in Power System with Long Time Scale
  • A Simulation Method of Frequency Fluctuation in Power System with Long Time Scale
  • A Simulation Method of Frequency Fluctuation in Power System with Long Time Scale

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Embodiment Construction

[0063] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0064] The power system operates at a synchronous frequency, and the power generated and consumed must be balanced. If excess power occurs, the synchronous generator will speed up and the frequency of the power system will increase; otherwise, the generator will slow down and the frequency of the power system will drop. However, due to the inherent randomness and volatility of the wind turbine itself, the wind power has random fluctuations. With the continuous increase of wind power penetration, power system frequency stability has been adversely affected. When the frequency of the power system is greatly reduced, the inertia of the power system plays a decisive rol...

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Abstract

The invention discloses a long-time scale power system frequency fluctuation simulation method which comprises the following steps: combining influences of wind power plant power fluctuation characteristics on power system frequency control, additionally arranging a wind power plant to participate in the power system frequency control in the original power system frequency control, and establishing a long-time scale power system frequency simulation platform; performing long-time scale simulation analysis on the influence of the wind power plant power fluctuation on the power system frequency control according to the established long-time scale power system frequency simulation platform. According to the long-time scale power system frequency fluctuation simulation method, the defects in the prior art that the power system frequency simulation speed is low, power equipment is low in operating safety and a power grid is low in economical efficiency can be overcome, so that the advantages that the power system frequency simulation speed is high, the power equipment is high in operating safety and the power grid is high in economical efficiency are realized.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a method for simulating frequency fluctuations in long-term scale power systems. Background technique [0002] As we all know, the frequency of the power system is one of the important indicators of power quality. The frequency of the power grid reflects the balance between the active power and the load of the power system. It is an important control parameter for the operation of the power system. There is a close relationship between safety and efficiency. The frequency deviation of the power system will not only cause harm to the operation of power users and equipment in the power system, but also affect the economy of the entire power grid. In severe cases, it will cause large-scale blackouts and even the collapse of the entire power system. [0003] With the rapid development of the economy and society, the demand for electricity has risen sharply, the structure of the power gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06F17/50
CPCY02E60/00
Inventor 姚旭曹银利蒲天骄于汀王玮张鹏付嘉渝贾怀森李晓虎孙英云晋朝雨
Owner STATE GRID CORP OF CHINA
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