Boosting calibration equipment used for power frequency resonance test
A calibration device and frequency resonance technology, applied in the field of transformer calibration, can solve problems such as inability to collect resonance high voltage, potential safety hazards, breakdown of test samples, etc., and achieve the effects of on-site handling, convenient adjustment, and simple operation.
Active Publication Date: 2014-11-19
STATE GRID CORP OF CHINA +3
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Problems solved by technology
The sudden voltage rise often exceeds the actual working voltage of the system, which may break down the test product or equipment, which is quite dangerous. Because the traditional power frequency voltage regulation control box cannot collect and analyze the resonant high voltage, it will not prejudge whether it may occur In this case, there is a security risk
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[0014] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0015] like figure 1 As shown, a boost calibration device for power frequency resonance test includes a power frequency power supply, and the power frequency power supply also includes a calibrator. In order to facilitate the integration of the power frequency power supply and the calibrator, the figure 1 The rectangular box represented by 1 in is named industrial frequency power supply, calibrator and measurement all-in-one machine 1. In the traditional power frequency resonance test boost calibration device, the power supply and calibrator are independent devices, and it is impossible to judge whether the resonance can be boosted to the required...
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The invention discloses boosting calibration equipment used for a power frequency resonance test. The equipment comprises a power frequency power supply, wherein the output end of the power frequency power supply is connected with the primary side of an exciting transformer. The boosting calibration equipment is characterized in that the power frequency power supply further comprises a calibration instrument and a first sampling unit and a second sampling unit both capable of collecting the current and voltage; the secondary side of the exciting transformer is connected with an adjustable electric reactor and a compensation capacitor in sequence; the earthing terminal of the compensation capacitor is connected with the first sampling unit; the earthing terminal of the secondary side of the exciting transformer is connected with the second sampling unit; the two ends of the compensation capacitor are respectively connected with a standard voltage mutual inductor and a voltage mutual inductor in a GIS transformer station in parallel; the standard voltage mutual inductor and the voltage mutual inductor in the GIS transformer station are respectively connected with the calibration instrument; the voltage mutual inductor in the GIS transformer station and a voltage mutual inductor load box are connected. According to the invention, the adjustment is convenient, the operation is simple, and the requirements for on-site transportation and test are met.
Description
technical field [0001] The invention relates to a boosting calibration device for power frequency resonance test, which belongs to the technical field of transformer calibration. Background technique [0002] When verifying the voltage transformer (capacitive voltage transformer) of the GIS substation (gas insulated substation) in the long-distance cable entry and exit line city, the voltage transformer cannot be completely isolated, and a certain number of intervals (interval It is a term for GIS structure. Generally, the equipment in GIS is put into the compartment, and a complete GIS is composed of multiple compartments) and a certain length of incoming and outgoing cable busbars, so that there is a certain capacitance to the ground. Due to the GIS interval and the existence of incoming and outgoing cables, there is a capacitive current during boosting, and the cross-sectional area specifications of the cable incoming and outgoing lines are different, the length is differ...
Claims
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Inventor 徐敏锐黄奇峰王忠东卢树峰杨世海陈铭明赵双双陈刚孙军陈江洪
Owner STATE GRID CORP OF CHINA