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Static reliability assessment method for complex power grid

A reliability and power grid technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems that cannot reflect the actual situation of the system and cannot calculate the reliability index of the system

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

[0024] The traditional reliability index calculation often cannot consider the influence of the electromagnetic ring network in the transmission network, cannot calculate the system reliability index under different grid structure methods, and cannot reflect the specific actual situation of the system

Method used

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  • Static reliability assessment method for complex power grid
  • Static reliability assessment method for complex power grid
  • Static reliability assessment method for complex power grid

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Embodiment Construction

[0070] The present invention will be further described below in conjunction with accompanying drawing.

[0071] Such as Figure 4 , a static reliability assessment method applicable to complex power grids, the method comprising the following steps:

[0072] (1) Establish a topology analysis model for power grid reliability assessment, and organize reliability assessment parameters;

[0073] (2) Classify substations;

[0074] (3) Divide the voltage levels described in substations for reliability assessment;

[0075] (4) Calculate the reliability index and record the calculation results;

[0076] (5) Judging whether the reliability indicators of all reliability evaluation sites have been calculated; if so, then perform step 6, otherwise return to step (4);

[0077] (6) Organize the calculation results, analyze the impact on the system under specific faults, determine the possible weak areas of the system, measure the safety of the entire system, and optimize the power grid s...

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Abstract

The invention provides a static reliability assessment method for a complex power grid, belonging to the fields of simulation and calculation of a power system. The mutual influence of power grids with different voltage grades is sufficiently considered in the method; the method can be used for calculating the reliability index of a system under different power grid structural ways to provide a relatively intuitive index for balancing the safety and the stability of the system to operating and planning personnel; through the index, the performances of the system under different power grid structures can be quantitatively compared and the weak links of the power grid can be found; therefore, the method is used for improving the power grid planning level and optimizing the structure of the power grid and has higher practical guiding significance and application value.

Description

technical field [0001] The invention belongs to the field of power system simulation and calculation, and in particular relates to a static reliability evaluation method suitable for complex power grids. Background technique [0002] With the increasing scale and complexity of modern power systems, and the continuous improvement of users' requirements for power quality, especially the occurrence of several blackouts in China and abroad, the safety and reliability of power systems have attracted people's attention. [0003] 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. [0004] To evaluate the reliability of the high-voltage system, you can directly analyze the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 宋云亭彭卉张鑫李亚军杨海涛赵晋邹舒陈湘
Owner CHINA ELECTRIC POWER RES INST