Intelligent recovery method for power control business

Abstract

The invention relates to an intelligent recovery method for a power control business. According to an ASON based path calculation method, when a power grid control business has a fault, original business receiving and sending paths are removed first and then a list of optional nodes arranged in a descending order is formed according to the importance of each node obtained by calculation in a network; when a new route channel is established, a node arranged at the back is selected as a new business path channel to ensure an important site function in a power grid not to be influenced by rerouting; and meanwhile, business receiving and sending channels of a faulted channel are removed to ensure receiving and sending paths of the power grid control business to be always consistent. The method specially comprises two processes of business path selection and line fault recovery selection: 1) business path selection and 2) control business channel fault recovery. The invention proposes a novel routing method, so that the intelligent recovery of the power control business is realized and the time delays of the receiving and sending paths of the control business are ensured to be consistent.

Description

technical field [0001] The invention relates to an intelligent recovery method for power control services, which belongs to the technical field of communication of power transmission systems. Background technique [0002] At present, the backbone transmission network in the power communication system widely adopts the ring network or link layered structure composed of the SDH system, which constitutes the transmission platform of the entire power transmission network. SDH is a comprehensive information transmission network that can effectively implement functions such as add-drop multiplexing, line transmission, circuit switching, and network management system access. The SDH transmission system has a unified frame structure digital transmission standard rate in the world. Its high-speed multiplexing signal can realize one-time addition and insertion of low-speed tributary signals, which not only reduces the hardware overhead, but also simplifies the addition and insertion p...

AI Technical Summary

Problems solved by technology

[0003] However, for the power system, as the scale of the power grid increases, the development of power communication services will become more prominent, which will definitely affect the continued smooth development of the business and the stability and security of the power grid communication network

At present, the optical fiber transmission network of the power system mainly has the following problems: the network topology is single, the reliability is not high; the bandwidth utilization rate is low; the network scalability is poor; the business scheduling ability is poor; ; and the current power grid control business can only use the SNCP self-healing ring protection method, does not support automatic multi-routing protection, and cannot deal with multi-point failures

The above two methods have certain disadvantages. The first method needs to traverse all the site paths, and the calculation is time-consuming, which cannot meet the functional requirements of the network. Virtual topology, time-consuming and requires a lot of storage

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