Cross-region power system protection communication network planning method

Abstract

The invention relates to a cross-region power system protection communication network planning method, comprising the steps of initializing a first generation of populations through adoption of a variable-length chromosome coding method; setting a fitness function, and evaluating fitness of chromosomes according to features of target populations; selecting parental chromosomes according to the fitness function, specifically, selecting the parental chromosomes through adoption of a selection operator, thereby enabling the parental chromosomes to be inherited by a next generation; carrying out cross processing on the parental chromosomes, and generating new chromosomes, thereby improving diversity of species; carrying out variation processing on the parental chromosomes after the cross processing, thereby improving searching capability of the populations; and combining the parental chromosomes and the newly generated chromosomes, as descendants of a current generation of populations, carrying out a next round of evolution until the preset generation number is realized, exiting a loop, and obtaining a final planning scheme, namely the chromosomes with the highest fitness in the last generation of populations. According to the method, a demand of line protection business for delay can be satisfied.

Description

technical field [0001] The invention relates to the technical field of electric power communication network, in particular to a planning method for cross-regional electric power system protection communication network. Background technique [0002] With the continuous development of China's power grid construction, especially the construction and development of energy trans-provincial, inter-regional and outbound transmission channels, the structure and scale of the power grid are becoming more and more complex, and the safe operation and stable control of large power grids are facing great challenges. Human errors, equipment failures, natural disasters and other system internal and external factors may pose a greater threat to the safe and stable operation of the system. Existing system protection functions are local (such as local electric field, substation and other equipment nodes, etc.), up to the regional level, unable to achieve cross-regional joint security and stabi...

AI Technical Summary

Problems solved by technology

When optimizing the power communication network, this technical solution considers the optimization of bearer services. The network quality evaluation standard is composed of indicators such as calculation nodes and service risk values, and then a customized genetic algorithm is used to solve the problem of service routing optimization. However, This method evaluates the network from the perspective of service routing, without considering service communication delay and site level factors

[0007] The document with the patent publication number CN106951615A involves a method for designing the topology structure of an electric power transportation network based on a dense matrix algorithm, which mainly solves the problems of weak robustness and low communication efficiency of the electric power transportation network designed in the prior art

In this technical solution, a genetic algorithm is used to plan the power optical communication network. This method takes into account the cost factor of network construction and the network load rate. The planning object of this method is the existing optical communication network, but it does not consider the planning of cross-regional communication networks. The problem

[0009] To sum up, the existing literature does not consider the cross-regional planning in the planning of the power communication network, and does not pay enough attention to the network construction cost and the average communication delay between regions. Therefore, these methods are not suitable for cross-regional planning. Planning Problems of Communication Network for Power System Protection

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