Power supplementing monitor for metering loop fault

Abstract

The invention discloses a power supplementing monitor for metering loop fault. The power supplementing monitor comprises an external current unit, a CT data acquisition unit, a DSP (digital signal processor) unit, a communication unit, an auxiliary power unit, an alarm output unit, a PT data acquisition unit, an external voltage unit and a standby PT data acquisition unit, wherein the output end of the external current unit is electrically connected with an input end of the CT data acquisition unit, an output end of the external voltage unit is electrically connected with input ends of the PTdata acquisition unit and the standby PT data acquisition unit, and output ends of the CT data acquisition unit, the PT data acquisition unit and the standby PT data acquisition unit are electricallyconnected with the input end of the DSP unit. The monitor is provided with the communication unit, independent internet access and an RS485 interface are adopted for output, the communication unit canbe accessed to a power acquisition terminal, and remote billing and monitoring functions are realized. The monitor is simple in structure and accurate and reliable in power supplementation.

Description

technical field [0001] The invention relates to a metering circuit fault electric quantity replenishment monitor, in particular to an automatic replenishment monitoring device after the metering failure of a gateway meter of an electric power generation enterprise and a power transformation enterprise, and belongs to the technical field of electric energy monitoring. Background technique [0002] With the rapid development of the economy, the measurement accuracy of substations in various regions is getting higher and higher, but the detection performance of the measurement devices is not perfect. At present, the existing loop state patrol instrument on the market can monitor the normal connection, open circuit, short circuit, primary short circuit and other states of the secondary loop of the gateway meter of the power generation enterprise and the substation enterprise in real time, and realize the monitoring of the secondary loop state. Accurate real-time monitoring can p...

AI Technical Summary

Problems solved by technology

At present, the existing loop state patrol instrument on the market can monitor the normal connection, open circuit, short circuit, primary short circuit and other states of the secondary loop of the gateway meter of the power generation enterprise and the substation enterprise in real time, and realize the monitoring of the secondary loop state. Accurate real-time monitoring can provide direct and reliable data support for electricity consumption inspection and fault diagnosis. However, when some special circumstances occur and the current transformer or voltage transformer used for metering is disconnected, the system cannot perform accurate power replenishment. thus greatly harming the economic interests of the power sector

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