Inductive current compensation type test transformer
A technology for testing transformers and inductive currents, which is applied in reactive power compensation, measurement of electrical variables, reactive power adjustment/elimination/compensation, etc., can solve problems such as low safety and low efficiency of withstand voltage testing, and achieve improved safety, The effect of improving test efficiency and improving load capacity
Inactive Publication Date: 2020-01-24
SHANDONG ELECTRIC POWER TRANSMISSION & SUBSTATION ENG CO
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[0004] The embodiment of the present invention provides an inductance current compensation type test transformer to solve the problems of low efficiency and low safety of capacitor bank withstand voltage test in the prior art
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[0021] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the...
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The embodiment of the invention discloses an inductive current compensation type test transformer. The transformer comprises a test transformer main body, a reactive power compensation device, an electric signal detection device and an automatic switching device, wherein the reactive power compensation device is used for selecting a reactive power compensation module and the compensation position,the electric signal detection device is used for detecting the current and the voltage of the test transformer and feeding back the detection result to a platform in real time, and the automatic switching device adjusts and outputs a control signal according to the phases of the secondary current and the secondary voltage of the test transformer so as to adjust a compensation inductance value. The inductive current compensation type test transformer is advantaged in that the capacitive reactive current in the test system is compensated by a compensation inductor, the capacitive current is completely compensated from input to output, the loading capacity of the test transformer is improved, test efficiency is improved, the construction progress is accelerated, and test safety is indirectlyimproved.
Description
technical field [0001] The invention relates to the technical field of withstand voltage tests of capacitor banks in reactive power compensation equipment in substations, in particular to an inductance current compensation type test transformer. Background technique [0002] There are many on-site voltage withstand test items for power grid equipment, including all primary equipment. Among them, the capacitor bank needs to be tested the most times. A substation will basically install 4 to 6 capacitor banks. The number of capacitors in each capacitor bank is basically 144 capacitors, totaling 576 to 864 capacitors in the whole station; and in the converter station, the number of capacitors can almost be described as countless, and the number is about 12,000. Use a light-duty high-voltage test transformer for withstand voltage, and only two capacitors can be tested for AC withstand voltage at a time. The number of capacitor bank withstand voltage tests per day is about 200. A ...
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IPC IPC(8): H02J3/18G01R31/12G01R31/14
CPCG01R31/1227G01R31/14H02J3/1878Y02E40/30
Inventor 夏俊飞刘壮骆鹏林永祥刘德华杨前孙朝晖张波卢栋李文硕徐云柯林国艳王士超孙竞开卢鹏杨瑞尹欣
Owner SHANDONG ELECTRIC POWER TRANSMISSION & SUBSTATION ENG CO