基于风险评估的特高压受端电网输电设备检修策略研究

摘要

特高压交直流大容量输电对于保障受端电网供电可靠性意义重大.结合工程实践,研究了面向特高压受端电网的输电设备协调检修策略.以华中地区某特高压落点省级电网为例,分析并找出受端电网中与特高压输送功率存在强耦合关系的重要设备;依据设备检修引入的电网运行风险量化评估指标,提出了相关设备与特高压的检修协调原则及设备检修安排的优先顺序.提出的方法对于特高压受端电网编制年度检修计划,保障特高压正常运行具有借鉴意义.%UHV AC/DC power transmission is of great significance to ensure the power supply reliability of the receiving power grid.In combination with the engineering practice, the coordination and maintenance strategy of transmission equipment for UHV receiving power network is studied in this paper.Take the case of a provincial power grid in central China, the important equipments in this UHV receiving power grid, strongly coupled with UHV transmission power, are found out.According to the quantitative evaluation index of power grid operation risk, maintenance principle and priority of maintenance arrangement for the relevant equipments are put forward.The proposed method can be used for the preparation of the annual maintenance plan for an UHV power grid.