Portable measuring device for high-voltage electromagnetic voltage transformer and parameter measuring method
A technology of voltage transformer and measuring device, applied in the field of high-voltage electromagnetic voltage transformer portable measuring device, can solve the problems of insufficient portability, unfavorable on-site measurement, single device and technical function, etc.
Pending Publication Date: 2021-06-08
中国南方电网有限责任公司超高压输电公司柳州局
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Problems solved by technology
[0004] However, the technical solutions in the prior art have the following problems: 1. It is not conducive to on-site measurement and is not portable enough; 2. It does not have a distributed capacitance measurement function, and the existing devices and technical functions are single
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Embodiment 1
[0034] Portable measuring device for high-voltage electromagnetic voltage transformers, including:
[0035] Power module, mode switch and output module;
[0036] The power module includes an energy storage battery, a power electronic inverter bridge and a filter link. The power module is used to complete the adjustable function of the amplitude and frequency of the power supply voltage;
[0037] The mode switch is used to switch between the integrated capacitance measurement mode and the excitation measurement mode, and the integrated capacitance measurement mode and the excitation measurement mode respectively control the measurement of the radially distributed capacitance and excitation parameters of the electromagnetic voltage transformer;
[0038] The output module is used to measure capacitance through the bridge output in the capacitance measurement mode, and the output module directly outputs the power supply voltage to measure the excitation parameters in the excitatio...
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The invention discloses a portable measuring device for a high-voltage electromagnetic voltage transformer. The portable measuring device comprises a power supply module, a mode switch and an output module, the power supply module comprises an energy storage battery, a power electronic inverter bridge and a filtering link, and is used for completing the function of adjusting the amplitude and frequency of the power supply voltage, an inverter provides an alternating current test power supply with adjustable amplitude and frequency, and a portable and movable measuring device is provided. The portable measuring device perfects the parameter measurement function of the voltage transformer, has the bridge output and can measure the distributed capacitance, and a portable voltage transformer distributed capacitance measurement scheme is provided. According to the provided method for measuring the distributed capacitance of the electromagnetic voltage transformer, by integrating the two functions of distributed capacitance measurement and excitation parameter measurement, the integrated accurate measurement of the distributed capacitance and excitation parameters of the electromagnetic voltage transformer can be directly carried out on a site by means of power output with adjustable amplitude and frequency and through the device and the test method.
Description
technical field [0001] The application relates to the technical field of high-voltage electrical testing, in particular to a portable measuring device and a parameter measuring method for a high-voltage electromagnetic voltage transformer. Background technique [0002] Transformer, also known as instrument transformer, is a general term for current transformer and voltage transformer. It can change high voltage into low voltage and high current into small current for measurement or protection system. Its function is mainly to convert high voltage or high current into standard low voltage (100V) or standard small current (5A or 1A, both refer to rated value) in proportion, so as to realize the standardization and miniaturization of measuring instruments, protection equipment and automatic control equipment. change. At the same time, the transformer can also be used to isolate the high-voltage system to ensure the safety of people and equipment. [0003] As an important mea...
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IPC IPC(8): G01R35/02G01R27/26G01R33/12
CPCG01R35/02G01R27/2605G01R33/12
Inventor 王靓郝志杰刘彬欧俊延罗义晖韦德重王荣超申狄秋王晟夏武林家成秦先坤尹忠奎黄聪梁君华石万里
Owner 中国南方电网有限责任公司超高压输电公司柳州局