| With the rapid development of today’s telecommunication business, construction of telecommunication network has taken crucial part in all industries. Especially in power system, it has played an indispensable role. As it carries the collection and exchange of electric power information, the significance and security of communication network of electric power differ from those of any other industries, which is directly related to operation of power supply and distribution. Therefore, the communication network of electric power should be constructed more cautiously and designed thoroughly.This thesis involves such aspects as follows:(1) It introduces the background information of power electric communication network and its current situation in China: during the construction of the network, the effective set-up of the transmission network in power system has been of key reviews of projects implemented by Information and Communication Subsidiary of State Grid over years and directly related to the secure operation of automation of electric dispatching, infrastructure construction and OA system, whose importance cannot be emphasized more. In Northeast China and eastern part of Inner-Mongolia, transmission networks have been dominated by such ZTE and Huawei transmission devices as Huawei OSN3500 series and ZTE ZXMP385 series.(2) Based on the current situation of the communication network of a particular province, this thesis illustrates the frameworks of both the provincial optical cable transmission network and those in 4 cities: setting-up 10 G loop linked with backbone nodes of municipal power suppliers and key 220 k V substations which act as upper reaches of access nodes of county suppliers and key 66 k V substations on a 2.5G link. Business in power system can be categorized into data communication network, internet, marketing 95598, dispatching telephones, administrative telephones, teleconferences and other business. This thesis analyzes on the data traffic of aforementioned business and predicts the data bandwidth between provincial company and municipal companies and that between different municipal companies.(3) According to the bandwidth demand proposed in Chapter 2, the thesis formulates the topology layout of network matches based on MSTP, which is to hereby increase one more 10 G device on each node and set-up dual-10 G backbone loop, adding configurations of newly-introduced transmission devices after calculation according to dispatching principle of optical amplifier and dispersion compensation and actual geographical position. One stronger device is proposed after two such devices as Huawei OSN 7500 and ZTE S385 are compared on the perspectives of cross capability, board bandwidth, slot number.(4) On the running of the network, this thesis compares two protection methods as channel protection and multiplex section protection. Since the communication network of power system is a private network and most of its transactions are 155 M and 2M, transmission channel slot being sufficient. The most suitable protection is channel protection. And the requirements on the terminal of DC power supply system are hereby proposed according to the relevant files of State Grid on room environment requirements of the newly-increased devices and electric design provided by device manufacturers. Detailed business dispatching plan is also formulated. The detailed allocations of transmission channel slots are given in the form of tables.This thesis proposes the construction layout for the provincial backbone transmission network in power system based on MSTP and thereby solves the issues on the set up of the provincial backbone transmission network in power system in a particular province by analyzing the current situation, presenting business demand, formulating solutions and making up the network operation pattern. It suffice different business demands in a private network and provides a feasible implementation program for future operation and maintenance of the system. |
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