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Development stage division method for power grid

A development stage, power grid technology, applied in the field of power grid development stage division based on reliability indicators, can solve problems such as failure to give accidents, achieve good computability, wide adaptability, and simple and clear methods and concepts.

Active Publication Date: 2012-07-11
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

The calculation results of the deterministic method can roughly estimate the safety of the system and propose measures to improve weak links, but it can only predict the accident consequences of some types of faults with a small number of faults, and cannot give the possibility of accidents How big is it? With the development of computer simulation technology, deterministic evaluation methods have gradually been replaced by probabilistic analysis methods.

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  • Development stage division method for power grid
  • Development stage division method for power grid
  • Development stage division method for power grid

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Embodiment Construction

[0064] Power supply reliability refers to the ability of the power supply system to continuously supply power to users. The development process of power supply reliability can be roughly divided into four stages: the stage of low reliability level; the stage of rapid development of reliability level; the stage of steady growth of reliability level; and the stage of high reliability level. The development and changes of the four stages of power supply reliability are attached figure 1 shown.

[0065] 1) Low reliability level stage

[0066] The stage of low reliability level is the initial stage of power supply reliability development. The power supply reliability rate at this stage is generally below 99%, and the corresponding average user outage time is generally above 87.6h, and the annual power supply reliability rate index fluctuates greatly.

[0067] 2) Rapid development stage of reliability level

[0068] The reliability level of power supply is increasing rapidly, th...

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Abstract

The invention provides a reliability-index-based development stage division method for a power grid, and belongs to the field of analysis and computation of a power system. The reliability-index-based development stage division method for the power grid comprises the following steps of: establishing a power grid data model for the simulation computation of the power system; determining a fault rate, a repair rate and failure clearing time; performing the simulation computation; and analyzing a simulation result. The method is simple and clear in concept, high in computability and wide in applicability; and the development stages of various specific power grids can be conveniently divided to guide the development planning of the power grids.

Description

technical field [0001] The invention belongs to the field of analysis and calculation of electric power systems, and in particular relates to a reliability index-based grid development stage division method. Background technique [0002] Reliability, as far as its definition is concerned, refers to the probability that components, equipment, systems, etc., will complete their intended functions under specified conditions and within a predetermined time. The purpose of reliability research is to predict and estimate the reliability level of the system's long-term planning and short-term operation. [0003] Power system reliability is a measure of the power system's ability to supply power and energy to power users uninterruptedly in accordance with acceptable quality standards and required quantities. Power system reliability includes two aspects of adequacy and safety. [0004] Adequacy refers to the ability of the power system to maintain the continuous supply of the tota...

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Application Information

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IPC IPC(8): H02J3/00H02H7/26
Inventor 宋云亭刘明志陈湘姜永吴丽华张军杨海涛张振高张鑫
Owner CHINA ELECTRIC POWER RES INST
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