System for verifying transient characteristics of electronic transformer compatible with IEC61850 protocol

An electronic transformer, transient characteristic technology, applied in the direction of instruments, measuring electricity, measuring electrical variables, etc., can solve the problems of the transformer calibrator being unable to interface, not having transformer synchronization means, etc., to achieve high versatility and reliability. Compatibility, Avoidance of Interference Error Sources, Effects of Interference Error Reduction

Inactive Publication Date: 2009-09-30
JIANGSU ELECTRIC POWER RES INST
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Problems solved by technology

[0003] Electronic transformers that provide data sources for protection equipment must have transient characteristics that meet standard specifications. At pre

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  • System for verifying transient characteristics of electronic transformer compatible with IEC61850 protocol

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Embodiment Construction

[0012] The quality of the transient characteristics of electronic transformers is directly related to the action and behavior of secondary equipment in digital substations, so the verification of transient characteristics is one of the key links that restrict the engineering practice of electronic transformers. This patent proposes a transient verification system compatible with the IEC61850 protocol.

[0013] The electronic transformer transient calibration system compatible with IEC61850 protocol digital input fully considers the anti-interference ability and high precision of the system. The pre-data conversion module in the acquisition unit can use TI's ultra-low power mixed signal Combined with microprocessor and 16-bit high-precision ADC, it completes the AD conversion of standard source and sample analog. The whole unit has low power consumption, wide frequency range, strong anti-interference ability, and the overall accuracy of the signal conversion circuit is not less ...

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Abstract

The invention discloses a system for verifying transient characteristics of an electronic transformer compatible with an IEC61850 protocol. The system comprises a collecting unit, a processing unit and a personal computer (PC) analyzing unit and is characterized in that the collecting unit is respectively connected with a reference transformer and a secondary transducer of an electronic transformer and comprises a preposed data conversion module for converting an analog signal into a digital signal; the processing unit is connected with the collecting unit through an optical fiber and internally provided with a synchronized signal generator which sends a way of standard synchronized signal to the electronic transformer for testing when synchronizing standard source data; and the PC analyzing unit is connected with the processing unit through an Ethernet. Because the preposed data conversion module is arranged in the collecting unit, the system has small interference errors, can be in adaptive connection with the standard electronic transformer compatible with the IEC61850 protocol and a GB/T20840 protocol and has high commonality and compatibility.

Description

technical field [0001] The invention relates to a transient characteristic verification system of an electronic transformer, which belongs to the field of transformer verification in a power system. Background technique [0002] The application of digital substation and electronic transformer has reached the stage of engineering practice. Domestic and foreign manufacturers have done a lot of research work in the field of digital substation around standard formulation, design planning, engineering application and other links. The essential and important process layer equipment of the substation also has the corresponding international standard, and related secondary products based on this standard have come out. Internationally, ABB, Siemens, etc., domestic Xinning Optoelectronics, Xi'an Tongwei and other companies have launched electronic transformer products, and have corresponding secondary interface equipment. [0003] Electronic transformers that provide data sources fo...

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Application Information

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IPC IPC(8): G01R31/00G01R35/02
Inventor 许扬包玉树李鸿泽罗强高振东袁宇波
Owner JIANGSU ELECTRIC POWER RES INST
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