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Evaluation method for impact of wind power integration on power grid transient state as well as medium and long term reliability

A power grid transient and reliability technology, applied in wind power generation, single-network parallel feeding arrangement, etc.

Active Publication Date: 2013-05-01
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

How to comprehensively measure the impact of wind power grid-connected on grid reliability and other research work, there are basically no relevant reports at home and abroad

Method used

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  • Evaluation method for impact of wind power integration on power grid transient state as well as medium and long term reliability
  • Evaluation method for impact of wind power integration on power grid transient state as well as medium and long term reliability
  • Evaluation method for impact of wind power integration on power grid transient state as well as medium and long term reliability

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Embodiment

[0067] The probabilistic analysis method of the influence of wind power grid-connected on system stability can be regarded as the extension of the deterministic method, that is, all possible states can be tested, and one or several reliability indexes of each state can be calculated. These state indexes The weighted sum of state probabilities is the total index of a node or the entire network. In the whole process of power system planning, design, and operation, adhering to a systematic and comprehensive reliability quantitative evaluation system is an effective way to improve power system efficiency. In the evaluation of the impact of wind power on the reliability of the power grid, in addition to analyzing the possible faults and taking corresponding measures to reduce the impact of the faults, it is also possible to determine the reasonable reliability level of the power grid and make the comprehensive power system Benefit tends to be the best.

[0068] The following proba...

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Abstract

The invention provides an evaluation method for impact of wind power integration on a power grid transient state as well as medium and long term reliability on the basis of investigating and surveying domestic and overseas power grid reliability evaluation research progress and combining the impact condition of the wind power integration on power grid characteristics, and constructs an impact evaluation algorithm process of the wind power integration on the power grid transient state as well as medium and long term reliability. With the adoption of the evaluation method, the impact of wind power on system safety performance can be visually expressed by quantitative evaluation indexes, wind power source factors influencing the power system safety performance are identified, and scheduling and operatorsing personnel can be guided to formulate corresponding precaution and improvement measures, so that the impact of the wind power integration on the power grid can be reduced.

Description

technical field [0001] The invention relates to a reliability evaluation method, in particular to a method for evaluating the impact of wind power grid connection on the transient state and medium and long-term reliability of the power grid. Background technique [0002] The increasingly serious development trend of today's environmental problems and energy crisis poses an unavoidable challenge to the sustainable development of the global power industry, thus prompting countries around the world to generally accelerate the research and development of new technologies and new technologies in the field of power to meet this new challenge. methods, including probabilistic power system reliability assessment methods. [0003] Historically, because the power generation system can be simulated with a simple single node, the probability-based reliability assessment method has been used in some countries in the 1950s and 1960s, and now many countries have carried out related researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCY02E10/763Y02E10/76
Inventor 丁剑宋云亭申洪张鑫侯耀飞杨海涛吴丽华王青陈西颖魏磊贾宏刚姜宁黄宗君张琳刘娟楠孙川永
Owner CHINA ELECTRIC POWER RES INST
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