A portable voltage online measuring device
A measuring device and portable technology, applied in the direction of measuring device, measuring electrical variable, measuring current/voltage, etc., can solve the problems of power failure of transmission line, low measurement accuracy of non-contact measuring device, etc., to reduce workload and ensure safety and convenience, the effect of ensuring reliability
Active Publication Date: 2019-05-28
宜昌光源电业有限责任公司
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Problems solved by technology
[0004] Aiming at the problem that the current voltage measurement device requires staff to climb up the pole tower or use the lifting device to carry out high-altitude operations and the need to cut off the power of the transmission line and the shortcomings of the non-contact measurement device's online measurement accuracy is not high
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[0025] Such as Figure 1 ~ Figure 3 As shown, a portable voltage online measuring device includes a measuring part, an insulating interval 9 and a motor lifting part. The measurement part includes a pressure equalizing ring 1, a high-voltage side electrode 2, a hollow insulating shell 3, an electric field sensor head 4, and a low-voltage side ground electrode 8.
[0026] The pressure equalizing ring 1 is connected to the high-voltage side electrode 2. The high-voltage side electrode 2 and the low-voltage side ground electrode 8 are respectively located at two ends of the hollow insulating shell 3, and an electric field is generated between the two electrodes. The low-voltage side ground electrode 8 is connected to the ground lead 11, and the ground lead 11 is grounded during measurement to ensure the ground potential of the low-voltage side ground electrode 8 and prevent accidental leakage.
[0027] The equalizing ring 1 has the function of increasing the contact surface and preve...
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The invention discloses a portable voltage on-line measurement device, comprising a measurement portion, an insulation spacing section, and a motor elevating portion; the measurement portion comprises a grading ring, a high voltage side electrode, a hollow insulation housing, an electric field sensing head and a low voltage side grounding electrode; the grading ring is connected to the high voltage side electrode; the high voltage side electrode and the low voltage side electrode are respectively arranged on two ends of the hollow insulation housing; an electric field is produced between the two electrodes; the low voltage side electrode is connected to a grounding lead; an electric field sensing head is positioned inside the hollow insulation housing; the electric field sensing head is connected to a photoelectric converter; the photoelectric converter is connected to a signal processing / transmission unit through a transmission optical fiber; a measurement signal is transmitted to a signal processing / transmission unit after going through photoelectric conversion by the photoelectric converter; the insulation spacing section is positioned on the lower end of the hollow insulation housing and on the upper end of the motor elevating portion; the motor elevating portion comprises a DC motor and a transmission rod; and the DC motor is connected to the measurement portion through the transmission rod. In the portable voltage on-line measurement device, the terminal display and the measurement portion are separated, and the measurement data is transmitted through the wireless signal. The portable voltage on-line measurement device is small in volume, light in weight, easy to carry and can measure voltage of a power transmission line anywhere and anytime.
Description
Technical field [0001] The invention is a portable voltage online measurement device, which relates to the field of power system measurement. Background technique [0002] Voltage is one of the standards to measure the quality of power. The undervoltage and overvoltage operation of the transmission and distribution network will affect the electrical equipment. Severe overvoltage will cause a series of accidents such as electrical equipment breakdown, discharge, flashover, and explosion. At the same time, the real-time voltage status of the transmission and distribution network reflects the operation of the entire line and the electrical load, and directly affects the safe operation of the power system. Therefore, it is very necessary to monitor the voltage status of the power system. However, in view of the limited number of voltage transformers in each substation, and the relatively long distance from each substation, the voltage measured by the voltage transformer can only tr...
Claims
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IPC IPC(8): G01R19/25
CPCG01R19/2503
Inventor 李振华赵爽
Owner 宜昌光源电业有限责任公司