CN203275495U - High voltage cable shielding net grounding wire leakage current detector - Google Patents

High voltage cable shielding net grounding wire leakage current detector Download PDF

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Publication number
CN203275495U
CN203275495U CN 201320297106 CN201320297106U CN203275495U CN 203275495 U CN203275495 U CN 203275495U CN 201320297106 CN201320297106 CN 201320297106 CN 201320297106 U CN201320297106 U CN 201320297106U CN 203275495 U CN203275495 U CN 203275495U
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CN
China
Prior art keywords
circuit
loop
selection circuit
input
output terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320297106
Other languages
Chinese (zh)
Inventor
宋翰彪
李胜川
王开宇
周志强
田庆阳
高殿滢
王勇
王世阁
史春生
焦明航
刘文娟
于长广
张喜旺
张琳
宋翘楚
张义卫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIAONING ELECTRIC POWER CO Ltd LIAOYANG POWER SUPPLY Co
State Grid Corp of China SGCC
Original Assignee
LIAONING ELECTRIC POWER CO Ltd LIAOYANG POWER SUPPLY Co
State Grid Corp of China SGCC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LIAONING ELECTRIC POWER CO Ltd LIAOYANG POWER SUPPLY Co, State Grid Corp of China SGCC filed Critical LIAONING ELECTRIC POWER CO Ltd LIAOYANG POWER SUPPLY Co
Priority to CN 201320297106 priority Critical patent/CN203275495U/en
Application granted granted Critical
Publication of CN203275495U publication Critical patent/CN203275495U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a high voltage cable shielding net grounding wire leakage current detector. The detector comprises an aluminum alloy shell. An alternating current/direct current power supply device and detection apparatus are arranged in the aluminum alloy shell. An anode and a cathode of the alternating current/direct current power supply device are connected with a frequency selection circuit respectively. A secondary side of a current sensor is connected with an I/V conversion circuit through a shielding wire. The I/V conversion circuit is connected with a bidirectional analog quantity output port and the frequency selection circuit respectively. The frequency selection circuit is connected with a filter circuit and a rectification loop respectively. The filter circuit is connected with the rectification loop. The rectification loop is connected with a peak value response time selection circuit. The peak value response time selection circuit is connected with input terminals of a peak value maintenance loop and a LCD driving loop respectively. An output terminal of the peak value maintenance loop 318 is successively and electrically connected with a partial pressure loop, the LCD driving loop and a LCD display screen. By using the detector of the utility model, a problem of cable burning losses caused by multi-point grounding of the existing cable shielding net grounding wire can be timely discovered and solved.

Description

High-tension cable gauze screen ground wire leakage current detector
Technical field
The utility model relates to a kind of detector, especially relates to a kind of high-tension cable gauze screen ground wire Leakage Current detector.
Background technology
At present, the leakage current testing of known high-tension cable gauze screen ground wire is not also included testing regulations in, and domestic do not have this kind test apparatus yet.
The utility model content
The problem that exists in order to solve prior art, the utility model provides a kind of high-tension cable gauze screen ground wire Leakage Current detector, this detector can detect power cable gauze screen ground current, judge whether the cable shielding mesh ground wire exists the problem of multipoint earthing, solved the problem that existing cable gauze screen ground wire multipoint earthing causes the cable scaling loss.
The technical scheme that the utility model adopts is:
high-tension cable gauze screen ground wire Leakage Current detector, include Al-alloy casing, be provided with the supplied by AC/DC electricity device in Al-alloy casing, pick-up unit and current sensor, described pick-up unit is by the I/V change-over circuit, bidirectional analog amount output port, frequency selection circuit, filtering circuit, commutating circuit, the peak response time selection circuit, peak value keeps the loop, divide hydraulic circuit, LCD drives loop and LCD display composition, the both positive and negative polarity of described supplied by AC/DC electricity device is connected with frequency selection circuit respectively, the secondary side of described current sensor is connected by the input end of shielding line with the I/V change-over circuit, the output terminal of I/V change-over circuit is connected with the input end of bidirectional analog amount output port and frequency selection circuit respectively, the output terminal of frequency selection circuit is connected with the input end of filtering circuit and commutating circuit respectively, the output terminal of filtering circuit is connected with the input end of commutating circuit, the output terminal of commutating circuit is connected with the input end of peak response time selection circuit, the output terminal of peak response time selection circuit keeps the loop to be connected with the input end that LCD drives the loop with peak value respectively, peak value keeps the output terminal and a minute hydraulic circuit in loop 318, LCD drives the loop and LCD display is electrically connected to successively.
Described high-tension cable gauze screen ground wire Leakage Current detector is provided with intelligent moisture separating device.
Described intelligent moisture separating device is comprised of temperature and humidity controller, fan, well heater and Temperature Humidity Sensor, the input end of described temperature and humidity controller is electrically connected to the supplied by AC/DC electricity device, the output terminal of temperature and humidity controller is electrically connected to fan and well heater respectively, and Temperature Humidity Sensor is electrically connected to the signal input part of temperature and humidity controller.
Advantage and effect that the utility model has are:
The utility model high-tension cable gauze screen ground wire Leakage Current detector has been provided with Al-alloy casing, be provided with supplied by AC/DC electricity device and pick-up unit in Al-alloy casing, can detect power cable gauze screen ground current, judge whether the cable shielding mesh ground wire exists the problem of multipoint earthing.Current sensor is connected with shielding line with the display part, due to the shielding action of Al-alloy casing, a complete set of equipment is under masked state, has avoided the interference of the complicated electric field of test site; Because current sensor and pick-up unit are splits, be convenient to read the numerical value on LCD display; With frequency selection function and peak-value-holding function, simultaneously owing to having installed intelligent moisture separating device additional, guarantee that instrument is under desirable condition of work all the time, test data is more accurate.Solved the problem that existing cable gauze screen ground wire multipoint earthing causes the cable scaling loss.
Description of drawings
Fig. 1 is the block scheme of the utility model high-tension cable gauze screen ground wire Leakage Current detector.
supplied by AC/DC electricity device 1 in figure, intelligence moisture separating device 2, pick-up unit 3, current sensor 4, I/V change-over circuit 312, bidirectional analog amount output port 313, frequency selection circuit 314, filtering circuit 315, commutating circuit 316, peak response time selection circuit 317, peak value keeps loop 318, divide hydraulic circuit 319, LCD drives loop 320, LCD display 321, temperature and humidity controller 207, fan 208, well heater 209, Temperature Humidity Sensor 210, AC Power supply socket 101, air switch 102, fuse 103, transformer 104, bridge rectifier 105, rechargeable battery 106.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
as shown in Figure 1, the utility model high-tension cable gauze screen ground wire Leakage Current detector includes Al-alloy casing, be provided with supplied by AC/DC electricity device 1 in Al-alloy casing, pick-up unit 3 and current sensor 4, described pick-up unit 3 is by I/V change-over circuit 312, bidirectional analog amount output port 313, frequency selection circuit 314, filtering circuit 315, commutating circuit 316, peak response time selection circuit 317, peak value keeps loop 318, divide hydraulic circuit 319, LCD drives loop 320 and LCD display 321 compositions, described supplied by AC/DC electricity device 1 is by AC Power supply socket 101, air switch 102, fuse 103, transformer 104, bridge rectifier 105 and rechargeable battery 106 form.the both positive and negative polarity of described supplied by AC/DC electricity device 1 is connected with frequency selection circuit 314 respectively, the secondary side of described current sensor 4 is connected by the input end of shielding line with I/V change-over circuit 312, the output terminal of I/V change-over circuit 312 is connected with the input end of bidirectional analog amount output port 313 and frequency selection circuit 314 respectively, the output terminal of frequency selection circuit 314 is connected with the input end of filtering circuit 315 with commutating circuit 316 respectively, the output terminal of filtering circuit 315 is connected with the input end of commutating circuit 316, the output terminal of commutating circuit 316 is connected with the input end of peak response time selection circuit 317, the output terminal of peak response time selection circuit 317 keeps loop 318 to be connected with the input end that LCD drives loop 320 with peak value respectively, peak value keeps the output terminal and a minute hydraulic circuit 319 in loop 318, LCD drives loop 320 and LCD display 321 is electrically connected to successively.
Described high-tension cable gauze screen ground wire Leakage Current detector also is provided with intelligent moisture separating device 2.
Described intelligent moisture separating device 2 is comprised of temperature and humidity controller 207, fan 208, well heater 209 and Temperature Humidity Sensor 210, the input end of described temperature and humidity controller 207 is electrically connected to supplied by AC/DC electricity device 1, the output terminal of temperature and humidity controller 207 is electrically connected to fan 208 and well heater 209 respectively, and Temperature Humidity Sensor 210 is electrically connected to the signal input part of temperature and humidity controller 207.
The course of work of the present utility model is as follows:
current sensor collection site data, send the data that gather to the I/V change-over circuit by shielding line, the I/V change-over circuit is converted to voltage signal with current signal and gives subsequent conditioning circuit and process, output at last LCD display, demonstrate measurement result, simultaneously can be with analog output, for recording camera, digital multimeter or registering instrument analysis, device adopts supplied by AC/DC electricity, the alternating current 220V power supply is through transformer pressure-reducing, be converted to the 9V direct current by bridge rectifier circuit, humiture in Temperature Humidity Sensor harvester case, give temperature and humidity controller, temperature and humidity controller intelligence dehumidifies and is incubated, device is under desirable condition of work all the time, complete unit is loaded in aluminium alloy box, the aluminium alloy box has played the effect of shielding, avoided the interference of the complicated electric field of test site.

Claims (3)

1. high-tension cable gauze screen ground wire Leakage Current detector, it is characterized in that including Al-alloy casing, be provided with the supplied by AC/DC electricity device in Al-alloy casing, pick-up unit and current sensor, described pick-up unit is by the I/V change-over circuit, bidirectional analog amount output port, frequency selection circuit, filtering circuit, commutating circuit, the peak response time selection circuit, peak value keeps the loop, divide hydraulic circuit, LCD drives loop and LCD display composition, the both positive and negative polarity of described supplied by AC/DC electricity device is connected with frequency selection circuit respectively, the secondary side of described current sensor 4 is connected by the input end of shielding line with the I/V change-over circuit, the output terminal of I/V change-over circuit is connected with the input end of bidirectional analog amount output port and frequency selection circuit respectively, the output terminal of frequency selection circuit is connected with the input end of filtering circuit and commutating circuit respectively, the output terminal of filtering circuit is connected with the input end of commutating circuit, the output terminal of commutating circuit is connected with the input end of peak response time selection circuit, the output terminal of peak response time selection circuit keeps the loop to be connected with the input end that LCD drives the loop with peak value respectively, peak value keeps the output terminal and a minute hydraulic circuit in loop, LCD drives the loop and LCD display is electrically connected to successively.
2. high-tension cable gauze screen ground wire Leakage Current detector according to claim 1, is characterized in that being provided with intelligent moisture separating device.
3. high-tension cable gauze screen ground wire Leakage Current detector according to claim 2, it is characterized in that described intelligent moisture separating device is comprised of temperature and humidity controller, fan, well heater and Temperature Humidity Sensor, the input end of described temperature and humidity controller is electrically connected to the supplied by AC/DC electricity device, the output terminal of temperature and humidity controller is electrically connected to fan and well heater respectively, and Temperature Humidity Sensor is electrically connected to the signal input part of temperature and humidity controller.
CN 201320297106 2013-05-28 2013-05-28 High voltage cable shielding net grounding wire leakage current detector Expired - Fee Related CN203275495U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320297106 CN203275495U (en) 2013-05-28 2013-05-28 High voltage cable shielding net grounding wire leakage current detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320297106 CN203275495U (en) 2013-05-28 2013-05-28 High voltage cable shielding net grounding wire leakage current detector

Publications (1)

Publication Number Publication Date
CN203275495U true CN203275495U (en) 2013-11-06

Family

ID=49505872

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320297106 Expired - Fee Related CN203275495U (en) 2013-05-28 2013-05-28 High voltage cable shielding net grounding wire leakage current detector

Country Status (1)

Country Link
CN (1) CN203275495U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308744A (en) * 2013-05-28 2013-09-18 国家电网公司 Leakage current detector for ground wire of high-voltage cable shielding net

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308744A (en) * 2013-05-28 2013-09-18 国家电网公司 Leakage current detector for ground wire of high-voltage cable shielding net
CN103308744B (en) * 2013-05-28 2015-07-29 国家电网公司 High-tension cable gauze screen ground wire leakage current detector

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131106

Termination date: 20160528