On-site calibration method and transient voltage measurement method of non-contact measuring device for DC field transient voltage in converter station

A measuring device and transient voltage technology, which is applied in measuring devices, measuring electrical variables, converting DC into AC for measurement, etc. Accuracy, easy operation and simple method

Active Publication Date: 2020-06-02
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the measurement devices including the electric field meter are not calibrated on site, the measurement accuracy of the transient voltage will be seriously affected, and then the monitoring effect of the transient voltage in the DC field of the converter station will be affected.

Method used

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  • On-site calibration method and transient voltage measurement method of non-contact measuring device for DC field transient voltage in converter station
  • On-site calibration method and transient voltage measurement method of non-contact measuring device for DC field transient voltage in converter station
  • On-site calibration method and transient voltage measurement method of non-contact measuring device for DC field transient voltage in converter station

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Embodiment

[0036] The research object of this embodiment is the measurement device used for the transient voltage measurement of the DC field of the high-voltage converter station, such as figure 2 As shown, it includes an electric field meter and a data acquisition system and a data processing system sequentially connected to the electric field meter. The electric field meter is composed of a static electric field meter of the model TMZ-002 and a DC electric field conversion module connected to it. The DC electric field conversion module is set at the front end of the electric field meter to convert the DC electric field into an AC electric field. Similar to Xie Shuai The field mill type atmospheric electric field meter and its calibration system are realized by the rotating piece in the field mill type atmospheric electric field meter and its calibration system (Xie Shuai et al. Zhejiang Meteorology 34 Volume 3 Issue 3, 2012.09.20). At this time, the direct current The frequency of th...

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Abstract

The invention discloses a field calibration method and a transient voltage measurement method for a convertor station direct current field transient voltage non-contact measurement device. The field calibration method is combined with the standard direct-current electric field environment, the standard alternating-current electric field environment and the field installation environment under thelaboratory condition to obtain a proportionality coefficient k1 and an electric field mill input / output proportion k2 of the electric field which is generated at the electric field mill position by high-voltage polar line voltage to finish calibrating the measurement device. The blank of field calibration technologies of the convertor station direct current field transient voltage non-contact measurement device is filled up, and furthermore, transient voltage measurement accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of power system transient voltage measurement, and relates to a high-voltage converter station DC field transient voltage measurement technology, in particular to a field calibration method and transient voltage of a non-contact DC field transient voltage measurement device for a converter station Measurement methods. Background technique [0002] The transient voltage waveform measured during the monitoring process of the DC field of the high-voltage converter station has important reference value for the overvoltage calibration and insulation coordination analysis of the DC field of the converter station. [0003] The DC field transient voltage of the converter station has a wide frequency coverage (DC to several MHz) and a high amplitude (up to thousands of kV). The DC voltage divider configured in the DC field is mainly aimed at the DC working voltage, and its bandwidth and sampling rate are limited, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00G01R19/18
CPCG01R19/18G01R35/007
Inventor 谢施君曹树屏庄池杰曾嵘时卫东刘凡张榆张晨萌姜南希花若蓉
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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