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A Performance Evaluation Method of Active Power Balance Control Based on Power System Reliability

A technology of power system and evaluation method, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems such as failure to meet reliability requirements, incomplete theoretical system, etc.

Active Publication Date: 2019-05-21
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem that the existing standard theoretical system is not complete and cannot meet the reliability requirements, the present invention will design a method for evaluating the performance of active power balance control based on the reliability of the power system

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  • A Performance Evaluation Method of Active Power Balance Control Based on Power System Reliability
  • A Performance Evaluation Method of Active Power Balance Control Based on Power System Reliability
  • A Performance Evaluation Method of Active Power Balance Control Based on Power System Reliability

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Embodiment Construction

[0089] The present invention will be further described below in conjunction with the accompanying drawings. The flow chart of the present invention is as figure 1 shown. Reliability requirements on frequency can be divided into safety requirements and adequacy requirements. Among them, security requirements on frequency can be further divided into short-term security requirements and long-term security requirements, respectively as figure 2 with image 3 shown. figure 2 Medium and short-term security requires that the frequency difference ΔF′ under disturbance exceeds the limit value ΔF m The continuous time cannot be longer than T m , where T m It is the power system that can continuously withstand the abnormal frequency difference ΔF m the longest time. image 3 Medium and long-term safety requirements, in a long period of time (such as one year), the frequency difference ΔF' under the disturbance exceeds the limit value ΔF m The cumulative time of can not be mor...

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Abstract

The invention discloses an active balance control performance evaluation method based on electric power system reliability. The method comprises steps that safety frequency requirements are determined; adequacy frequency requirements are determined; evaluation indexes are designed. According to the method, a new adequacy index, namely frequency loss expect is constructed, a deviation degree and probability of electric power system frequency after an accident are quantitatively described to reflect influence of accident disturbance on power supply capability of an electric power system; adequacy and safety requirements of the electric power system are both considered, long-term (a range from a month to a year) and short-term (minute-level) time scales are employed, the accumulation off-limit time and the continuous off-limit time of the frequency are respectively limited, in combination with the safety adequacy index, through theoretical derivation, analysis expressions of the evaluation indexes are acquired, long-term and short-term frequency fluctuation situation situation requirements under a stable state are realized, and complete theoretical bases are realized.

Description

technical field [0001] The invention relates to an evaluation method for reliable operation of a power system, in particular to an evaluation method for active power balance control performance. Background technique [0002] In order to share reserve resources together to improve the reliability of power supply, and to take advantage of the resource complementarity characteristics of the imbalanced energy structure between power grids in different regions, the current power grids are widely interconnected. The economically independent sub-power systems that make up the interconnected grid are called control areas, also known as balancing agencies. [0003] The basis for the safe and stable operation of the interconnected grid is the synchronous operation of the entire network equipment, and its operating quality is usually described by frequency fluctuations. Frequency fluctuations are caused by the imbalance between the sum of power generation and the sum of loads in all c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q50/06
CPCG06Q50/06H02J3/00H02J2203/20
Inventor 李卫东常烨骙巴宇
Owner DALIAN UNIV OF TECH
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