Intelligent feeder line automation method in autonomous self-healing distribution network

Abstract

The invention relates to an intelligent feeder line automation method in an autonomous self-healing distribution network, comprising the following steps that the topological structure chart of the distribution network is stored to each intelligent terminal, and the intelligent terminals generate a self-healing strategy base according to the topological chart; a protector carries out wireless communication with the intelligent terminals, and the intelligent terminals also carry out the wireless communication with each other; the protector and the intelligent terminals judge the fault to be a temporary fault or a permanent fault according to a fault signal obtained by communication, if the fault is the temporary fault, the protector closes a transformer substation outlet switch, and if the fault is the permanent fault, the protector recloses the transformer substation outlet switch twice, and the intelligent terminals select a self-healing strategy from the self-healing strategy base to carry out fault self-healing processing. In the intelligent distribution network, each intelligent terminal comprises a storage module, a strategy base generating module, a communication module, a first switch control module and a master control module, and the protector comprises a communication module and a second switch control module. The invention can process faults on the spot and improve the system reliability.

Description

technical field [0001] The invention relates to a power distribution system in the electric power industry, in particular to a method for automating an intelligent feeder in a distribution network. Background technique [0002] In the distribution network system, safety is often the first priority of all operation and management work. Facts have proved that safety and reliability are the most important purpose of investment in operation and maintenance of distribution network enterprises. Such as figure 1 As shown, distribution network automation can be achieved by figure 1 The schema shown to implement management. This method is specifically as follows: by using the measurement and control terminal arranged on site, the parameters of the power distribution line are collected, and then the information is sent to the master station system through a certain communication method. The control command returns to the measurement and control terminal in the original way, and the...

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Problems solved by technology

[0004] There are at least two problems with this approach: 1) The security risk is concentrated in the main station system

Due to the large number of power distribution lines, when there are many fault points or power distribution point transformation tasks, the master station system is often unable to handle

Once the main station system cannot handle it or there is a problem with the main station system, it will lead to the paralysis of the entire power distribution automation

2) The pressure on the signal channel is high, which is prone to information congestion, especially for the use of wireless communication. Once the channel is blocked, the power distribution automation will be paralyzed

Because these four elements are often not satisfied at the same time, especially for large-scale systems, it also leads to the failure of the distribution network fault automatic processing function of most systems after running for a period of time. At the same time, some fault processing systems more human intervention

[0007] Based on the above analysis, this processing method of centralized control of the master station has its defects, the failure cannot be handled locally, and the reliability of the system is greatly weakened due to the dependence on the master station and its communication system

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