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发明公开
CN110824349A 直流保护电器级差配合检测系统 无效 - 驳回

直流保护电器级差配合检测系统
摘要：
本发明公开了一种直流保护电器级差配合检测系统，包括直流保护电器级差配合测试仪，所述直流保护电器级差配合测试仪的信号输入端通过测试导线依次连接有断路器Ⅱ和断路器Ⅰ，所述直流保护电器级差配合测试仪的信号输出端通过USB通讯线与计算机连接，所述直流保护电器级差配合测试仪内包括在线预估检测电路和短路校验检测电路，所述在线预估检测电路包括相互串联的电流传感器和可调节负载，所述电流传感器的输出端与NI数据采集卡连接，所述短路校验检测电路包括分流器和延时保护器，本发明操作简单，产品具备高精度，高稳定性，高可靠性，携带方便等特点，能够满足发电厂、变电站的直流系统断路器级差配合定期校验要求。
摘要（英）：

The invention discloses a direct-current protective electrical differential matching detection system. The system comprises a direct-current protective electrical differential matching tester, whereinthe signal input end of the direct-current protective electrical differential matching tester is connected with a breaker II and a breaker I sequentially through test wires, the signal output end ofthe direct-current protective electrical differential matching tester is connected with a computer through a USB communication line, the direct-current protective electrical differential matching tester internally comprises an online estimation detection circuit and a short-circuit verification detection circuit, the online estimation detection circuit comprises a current sensor and an adjustableload which are connected in series, the output end of the current sensor is connected with an NI data collection card, and the short-circuit verification detection circuit comprises a shunt and a delay protector. The system is simple in operation, a product has the advantages of being high in precision, high in stability, high in reliability, convenient to carry and the like, and the requirement for direct-current system breaker differential matching regular verification of a power plant and a substation can be met.

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