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Dielectric loss testing device for extra-high voltage large-capacitance equipment

A dielectric loss and testing device technology, which is applied in measuring devices, measuring electrical variables, and measuring dielectric properties, etc., can solve problems such as failure to meet the requirements of regulations, and achieve the effects of ensuring safe and stable operation, being easy to carry on site, and light in weight

Pending Publication Date: 2019-09-17
STATE GRID ANHUI ULTRA HIGH VOLTAGE CO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the test voltage at this stage cannot meet the requirements of the regulations due to the limitation of the capacity of the test equipment.

Method used

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  • Dielectric loss testing device for extra-high voltage large-capacitance equipment
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  • Dielectric loss testing device for extra-high voltage large-capacitance equipment

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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] see figure 2 , the embodiment of the present invention includes:

[0019] A dielectric loss testing device for UHV large-capacity equipment, mainly including a frequency conversion module, a booster module, and a dielectric loss testing module connected in series in sequence. The frequency conversion module, boosting module, and dielectric loss testing module are integrated into one device, and the volume is small , Light weight, easy to carry on site.

[0020] The frequency conversion module adopts an AC-DC-AC frequency converter, including a rectifier module, a capacitor module, and an inverter module connected in parallel. The AC-DC-...

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Abstract

The invention discloses a dielectric loss testing device for extra-high voltage large-capacitance equipment, and the device mainly comprises a frequency conversion module, a boosting module and a dielectric loss testing module, and the frequency conversion module, the boosting module and the dielectric loss testing module are sequentially connected in series; and wherein the dielectric loss testing module adopts a penicillin bridge, a bridge arm CA is an equivalent circuit formed by connecting a tested product CX and a tested product RX in parallel or in series, a bridge arm CB is an air standard capacitor CN, a bridge arm AD is a non-inductive variable resistor R3, a bridge arm BD is formed by connecting a non-inductive resistor R4 and a variable capacitor C4 in parallel, and a galvanometer is connected between AB. The frequency conversion module is used for carrying out frequency conversion on alternating current and then the boosting module is used for boosting the alternating current to 10 kV. The dielectric loss testing device for extra-high voltage large-capacitance equipment is small in size, light in weight and convenient to carry on site, and when an extra-high voltage CVT medium-voltage capacitor is used for a medium loss test, alternating-current 10 kV voltage can be applied to the tested product, so that the requirements of regulations are met, and the safe and stable operation of the extra-high voltage CVT is guaranteed.

Description

technical field [0001] The invention relates to the field of power system equipment, in particular to a dielectric loss testing device for ultra-high voltage and large capacitance equipment. Background technique [0002] my country's renewable energy resources such as hydropower, wind energy, and solar energy have the characteristics of large scale and concentrated distribution, and most of the areas where the load demand level is low, need to take the development path of centralized development, large-scale delivery, and large-scale consumption. UHV power transmission has the advantages of large capacity, long distance, low energy consumption, small land occupation, and good economy. The construction of UHV power grid can realize large-scale and long-distance transmission of various clean energy, and promote the efficient and safe use of clean energy. With the gradual formation of the UHV power grid, more and more UHV equipment has been put into operation in the power grid....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26
CPCG01R27/2694
Inventor 张晨晨夏勇刘锡禹李腾李萌萌陈磊华超穆云龙张放李敏晖束学刚谈力程鸿鹄林玉娟
Owner STATE GRID ANHUI ULTRA HIGH VOLTAGE CO
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