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1.发明申请公开(公告)号：US20200309840A1
公开(公告)日：2020-10-01
申请号：US16371137
申请日：2019-04-01
申请人： Dake He
发明人： Dake He , Kun Liu , Gang Liu , Bing Ai , Bo Jiang , Jiapeng Huang , Na He , Wei Jiang , Qiang Shi
摘要： The invention discloses an error detection wiring circuit and switching device for instrument transformers in distribution power grid, wherein the wiring circuit integrates a three-phase three-wire metering circuit and a three-phase four-wire metering circuit, and the switching device comprises a linear push rod and a driving motor. Through the control of the driving motor, the movement of the linear push rod to the through terminal ports, which consist of the BN terminal, the CN terminal, and the P1B terminal, is realized. With this, the conversion of the two methods can be realized by simply switching the short circuit wiring of the P1B terminal or the BN terminal to the CN terminal and the AN terminal. Using certain measurement method, each phase of the transformer to be tested can be measured simultaneously, which improves the accuracy of the detected data. Meanwhile, the prior art of wiring conduction structure is changed into a rod-shaped jack-type conduction structure, such that the two-step wiring procedure is reduced to one step during measurement, which can be realized by simply controlling the forward and reverse rotation of the driving motor. No manual wiring operation is required, which is safer and more convenient, and greatly improves the efficiency of wiring conversion during measurement.
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公开(公告)号：US20200309829A1
公开(公告)日：2020-10-01
申请号：US16371124
申请日：2019-04-01
申请人： Dake He
发明人： Dake He , Kun Liu , Bing Ai , Fuzhou Zhang , Qiang Shi , Xianshun Chen , Xiang Zhang
摘要： The invention discloses an on-line monitoring system for the performance of the measurement equipment in the entire power grid based on wide-area synchronous measurement, including a number of capacitive voltage transformers (CVT), electronic voltage transformers (EVT), electronic current transformers (ECT), electromagnetic potential transformers (PT), electromagnetic current transformers (CT), secondary circuits, electric energy meters, energy acquisition terminals, merging units, switches, clock synchronization systems, long-distance transmission line and other operating equipment. It also includes CVT insulation parameter monitoring module, CT oil pressure sensor, environmental parameter monitoring module, clock synchronization module, wide-area synchronous monitoring system consist of online monitoring apparatus, data transmission channel, installed in all substations of the power grid, as well as analysis and evaluation system of acquisition master station.CT, CVT and PT are connected to the on-line monitoring apparatus separately. EVT, ECT, CVT parameter acquisition module, CT oil pressure sensor and environmental parameter monitoring module are connected to the merging unit. The merging unit is connected to the on-line monitoring apparatus separately. The clock synchronization module is connected to the merging unit and the on-line monitoring apparatus respectively. The On-line monitoring apparatus can synchronously monitor and alarm the insulation performance, error characteristics and environmental parameters of multiple transformers, electric energy meters and secondary circuits, and complete on-line calibration of electric energy meters and group calibration of instrumentational transformers, and transmit the data to the acquisition master station through mature protocol and data transmission channels for energy data acquisition and equipment state monitoring. The on-line monitoring apparatus and merging unit in the entire network are synchronized by GPS clock synchronization system, so that the data of the entire network can be acquired synchronously. The overall performance of various measurement equipment is evaluated using related analytical techniques based on big data technologies.
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