无锡220 kV西泾智能变电站关键技术

Key Technology of Wuxi 220 kV Xi Jin Smart Substation

无锡220 kV西泾智能变电站按站控层、间隔层、过程层"三层两网"设计,220 kV电压等级母线和变压器保护过程层采用"直采网跳"模式,线路及母联保护过程层采用"直采直跳"模式,过程层网络双重化配置;110 kV电压等级保护过程层采用"网采网跳"模式,同时SV网、GOOSE网、IEEE 1588网三网合一,网络冗余配置。同一间隔的保护测控功能集成在一个装置内。站控层实现了基于主站再确认机制的顺序控制、分布式状态估计、智能告警及故障信息综合分析决策等智能变电站高级功能。配置了计量对比分析系统,在各种工况下对传统互感器和电子式互感器的长期运行特性进行对比分析。

Wuxi 220 kV Xi Jing smart substation will be designed as two networks and three layer which includes control layer, interval layer and process layer. In 220 kV voltage level, bus and transformer protection use ＇direct sampling network trip＇ mode, while line and bus connection protection use ＇direct sampling network trip＇ mode, and process layer network use double configuration. In 110 kV voltage, all protection use ＇network sampling network trip＇ mode, thus we realize network redundancy configuration through unification of three nets： SV sampling GOOSE, IEEE 1588. Protection and control function is integrated in a unit. Station level realize sequence control which is based on master station re-confirmation mechanism, distributed state estimation, intelligent alarm, fault information comprehensive analysis and decision-making intelligent substation advanced feature Etc. Substation is equipped with measurement comparative analysis system, which can realize long-running characteristic comparative analysis of traditional transformer and various electronic transformer under kinds of working conditions.