To address the problem of heavy distributed debugging workload and communication failure of virtual terminal loop in intelligent substation secondary protection equipment, a cross-interval maintenance system based on SCD file and CCD file calibration is introduced. The system is mainly composed of consistency ratio and synchronous control detection. Based on the correct result of consistency comparison between the SCD file and the CCD file, this paper makes nine sets of power amplifiers output synchronously at most by using the theory of optical clock synchronization. Each power amplifier can output three phase voltage and three phase current and re-collect intelligent terminal protection tripping signals through hard contact of eight-way switch of power amplifier to realize one-time closed loop maintenance test of multi-spacing protection, for example main transformer, line, etc. Intelligent substation cross-interval maintenance system based on SCD file and CCD file calibration realizes multi-interval integral test of secondary equipment in intelligent substation, which has certain reference value for improving debugging and maintenance efficiency of intelligent substation and carrying out automatic test of the whole station.%针对智能变电站二次保护设备分散调试工作量大、虚端子回路通信易失败等问题,介绍了一种基于 SCD 文件与 CCD 文件校准的跨间隔检修系统.该系统主要由一致性比对和同步控制检测两部分功能构成.在 SCD 文件与 CCD 文件一致性比对正确的结果上,利用光纤时钟同步原理使最多 9 台功率放大器同步输出,每台功率放大器能够输出 3 相电压和 3 相电流,功率放大器 8 路开关硬接点回采智能终端保护跳闸信号,实现主变、线路等多间隔保护一次性闭环检修测试.基于 SCD 文件与 CCD 文件校准的智能变电站跨间隔检修系统实现智能变电站二次设备多间隔整体测试,对提升智能变电站调试检修效率和开展全站自动测试有一定的参考价值.
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