High-voltage electric energy metering device

A metering device and high-voltage electric energy technology, which is applied in the field of substation metering, can solve problems such as calculation errors, system errors, and digital electric energy meters that are afraid of errors, and achieve the effects of improving detection accuracy, improving measurement accuracy, and ensuring reliability
CN112557748APending Publication Date: 2021-03-26STATE GRID HUBEI MARKETING SERVICE CENT (MEASUREMENT CENT)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID HUBEI MARKETING SERVICE CENT (MEASUREMENT CENT)
Publication Date
2021-03-26

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Abstract

The invention provides a high-voltage electric energy metering device; standard signals are provided for detection signals of a three-phase voltage transformer and a three-phase current transformer byarranging a standard voltage transformer and a standard current transformer, and a ratio difference and an angular difference between the detection signals of the three-phase voltage transformer andthe three-phase current transformer and the standard signals are calculated, so that errors of the three-phase voltage transformer and the three-phase current transformer are obtained, and the measurement precision of the system is improved; a GPS receiving module is arranged to be used for synchronizing a first merging unit, a second merging unit, a first signal processing module and a second signal processing module, synchronous sampling of all channels is achieved, and the error detection precision is improved.
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Description

technical field

[0001] The invention relates to the technical field of substation metering, in particular to a high-voltage electric energy metering device. Background technique

[0002] With the rapid development of substation automation and network communication technology, and the promulgation and implementation of the IEC61850 standard system, traditional substations have gradually transitioned to digital substations. The electric energy technology of the digital substation realizes the transformation from analog to full digital in the collection, and transmits it through the optical fiber line, and transmits it to the digital electric energy meter through point-to-point or Ethernet, which provides a data source for the electric energy metering system in the digital substation. Digital substation electric energy metering system.

[0003] However, due to the errors of voltage transformers and current transformers, the conversion error of the merging unit, the fear of err...

Claims

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