Reliability index calculating method of power distribution system based on successful flow

A power distribution system and reliability technology, applied in computing, AC network circuits, electrical components, etc., can solve problems such as slow processing speed, increased model complexity, and complicated programming

Inactive Publication Date: 2009-10-21
SOUTHEAST UNIV
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Problems solved by technology

Therefore, with the expansion of the scale of the power distribution system, the state combination will be very large, the complexity of the model will increas...

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  • Reliability index calculating method of power distribution system based on successful flow
  • Reliability index calculating method of power distribution system based on successful flow
  • Reliability index calculating method of power distribution system based on successful flow

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Embodiment Construction

[0067] The calculation method of the reliability index of the distribution system based on the success flow includes the following steps:

[0068] Step 1: Read in network parameters: including component parameters of lines, transformers, fuses, isolating switches, and circuit breakers.

[0069] The network parameters refer to the physical parameters of the network, which mainly include line resistance, line reactance, line length, first-end connection node number, transformer resistance, transformer reactance, transformer ratio, connection node number on each side of the transformer, fuse position, isolation switch position , Circuit breaker location and so on. Component position refers to the physical connection sequence relationship between components.

[0070] Step 2: Read in reliability data: including line failure rate, line maintenance time; circuit breaker operation time, circuit breaker failure rate; disconnect switch operation time; fuse failure rate; transformer failure ...

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Abstract

The invention relates to a reliability index calculating method of a power distribution system based on a successful flow, and the method is characterized by simple model, less time consumption for calculation, high calculation precision, ability of being used for the system with larger scale and the ability of calculating indexes of all load points and further providing a basis for the management of micro-limits of individual reliability. The method comprises the following steps: step 1: reading network parameters: including the element parameters of a circuit, a transformer, a fuse, an isolation switch and a circuit breaker; step 2: reading reliability data: including fault rate of the circuit, troubleshooting time of the circuit, operation time of the circuit breaker, the fault rate of the circuit breaker, the operation time of the isolation switch, the fault rate of the fuse, the fault rate of the transformer, and fault maintenance time of the transformer; step 3: forming a network topological structure and forming the element connection relationship; step 4: utilizing the recursive algorithm to calculate the reliability indexes of all complicated branches; step 5: calculating the reliability indexes of all the load points; step 6: calculating the total reliability indexes of the system.

Description

Technical field [0001] The invention relates to a method for calculating the reliability index of a distribution system based on success flow, and belongs to the technical field of reliability analysis of the distribution system. Background technique [0002] With the development of society, users have higher and higher requirements for power quality. How to provide users with sufficient, reliable, and economical electrical energy is the primary task of power workers. Power system reliability is one of the key factors affecting power quality. Therefore, improving the power supply reliability of the power system is one of the important links in improving power quality. [0003] In the past few decades, many experts and scholars have invested a lot of research on the reliability index calculation of power generation and transmission combined system, and conducted in-depth discussions in terms of theoretical analysis, calculation methods, and practical applications, which laid the f...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06F17/00G06Q50/00G06Q50/06
Inventor 李扬姚颖蓓徐荆州李一磊
Owner SOUTHEAST UNIV
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