CN104698351A - Local discharge monitoring device of switch cabinet - Google Patents
Local discharge monitoring device of switch cabinet Download PDFInfo
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- CN104698351A CN104698351A CN201510076715.XA CN201510076715A CN104698351A CN 104698351 A CN104698351 A CN 104698351A CN 201510076715 A CN201510076715 A CN 201510076715A CN 104698351 A CN104698351 A CN 104698351A
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- power supply
- alarm
- partial discharge
- ultraviolet
- ultraviolet detector
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Abstract
The invention discloses a local discharge monitoring device of a switch cabinet, and belongs to the field of power equipment. The device comprises an ultraviolet detector for detecting an ultraviolet signal generated by the switch cabinet during local discharge, an alarm which is connected with the ultraviolet detector to process the ultraviolet signal by amplifying and noise reduction so as to obtain an alarm control signal which is used for controlling an ultraviolet indication unit of the alarm to indicate the local discharge of the switch cabinet as well as controlling a counter of the alarm to record the local discharge times of the switch cabinet, and a power unit for providing power to the ultraviolet detector and the alarm. According to the technical scheme and compared with other discharge monitoring means, the device has the advantages of being low in price, convenient to mount, and convenient to examine, and has a good popularization prospect.
Description
Technical field
The present invention relates to power domain, particularly a kind of partial discharge of switchgear monitoring device.
Background technology
Switch cubicle is the important electrical of generating plant, transformer station, and the electrical equipment of its inside is because of characteristics of compact layout, and spacing is little, after discharging, very easily develop into accident, thus makes switch cubicle cisco unity malfunction.Stable operation due to switch cubicle directly has influence on the production of local industrial or agricultural, and it is necessary for therefore monitoring the electric discharge phenomena of switch cubicle.
In prior art, operation maintenance personnel generally judges whether have electric discharge phenomena in switch cubicle by sound, but this method easily causes fails to judge, judges by accident, particularly intermittence is discharged, operation maintenance personnel uses the method not easily to find in tour process, very easily the normal operation of switch cubicle is judged by accident, thus bury accident potential.
Summary of the invention
In order to solve the problem, the invention provides a kind of partial discharge of switchgear monitoring device, it comprises: ultraviolet detector, for the ultraviolet signal produced during search switch cabinet shelf depreciation; Alarm, be connected with described ultraviolet detector, for amplifying described ultraviolet signal, noise reduction process to obtain alarm control signal, described alarm control signal to indicate described partial discharge of switchgear for the ultraviolet indicating member controlling described alarm and the counter of alarm carries out record to the number of times of described partial discharge of switchgear; And power supply unit, for providing power supply for described ultraviolet detector and described alarm.
In partial discharge of switchgear monitoring device as above, preferably, in described alarm, one end of the first resistance is connected with the power input of the positive pole of described power supply unit, the collector of the first triode, one end of the first electric capacity and described ultraviolet detector respectively; The other end ground connection of described first electric capacity, and be also connected with the negative pole of described power supply unit; The resistance two ends of potentiometer are connected with the other end of the first resistance and the output terminal of described ultraviolet detector respectively, and the sliding end of described potentiometer is connected with the output terminal of described ultraviolet detector; The base stage of described first triode is connected with the output terminal of described ultraviolet detector, the described emitting stage of the first triode is connected with the positive pole of the light emitting diode of photo-coupler, the minus earth of the light emitting diode of described photo-coupler, the collector of the phototriode of described photo-coupler is connected with the positive pole of described power supply unit, and the emitting stage of the phototriode of described photo-coupler is connected with the base stage of the second triode; The emitting stage ground connection of described second triode, and be also connected with the negative pole of described power supply unit and the ground end of described ultraviolet detector; The described collector of the second triode is connected with one end of the coil of power relay, the other end of the coil of described power relay is connected with the positive pole of described power supply unit, one end of the normally opened contact of described power relay is connected with the positive pole of described power supply unit, the other end of the normally opened contact of described power relay is through counter ground connection, and the other end of the normally opened contact of described power relay is also successively through the second resistance, described ultraviolet indicating member ground connection.
In partial discharge of switchgear monitoring device as above, preferably, described alarm also comprises: the 3rd resistance and power supply indicating member; One end of described 3rd resistance is connected with the positive pole of described power supply, and the other end of described 3rd resistance is through described power supply indicating member ground connection.
In partial discharge of switchgear monitoring device as above, preferably, described ultraviolet indicating member and described power supply indicating member are LED.
In partial discharge of switchgear monitoring device as above, preferably, described ultraviolet detector and described alarm integral installation are located in a housing, the ultraviolet signal of probe by producing when through hole is to detect described partial discharge of switchgear on the shell of switch cubicle described in the through-hole alignment on described housing of described ultraviolet detector.
In partial discharge of switchgear monitoring device as above, preferably, on inside the cabinet wall that described ultraviolet detector is positioned at described switch cubicle, described alarm is positioned at outside described switch cubicle.
In partial discharge of switchgear monitoring device as above, preferably, described alarm also comprises: the uitraviolet intensity pilot lamp being used to indicate described partial discharge of switchgear intensity; Described uitraviolet intensity pilot lamp is connected between the positive pole of described power supply unit and the collector of described second triode.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
This device can sensitive seizure discharge scenario, and is reflected by pilot lamp and counter, is convenient to operation maintenance personnel inspection and judges; This device compares other electric discharge monitoring means, has cheap, easy for installation, is convenient to the advantages such as inspection.Importantly, the arrangement achieves the monitoring to intermittent discharge in switch cubicle, also make the round-the-clock Real-Time Monitoring of switch cubicle become possibility, be equipment fault analysis in switch cubicle, Data support is provided; There is good promotion prospect.
Accompanying drawing explanation
The circuit structure connection diagram of a kind of partial discharge of switchgear monitoring device that Fig. 1 provides for the preferred embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
See Fig. 1, embodiments provide a kind of partial discharge of switchgear monitoring device, it comprises: ultraviolet detector 20, alarm and power supply unit.The ultraviolet signal of ultraviolet detector 20 for producing during search switch cabinet shelf depreciation.Alarm is connected with ultraviolet detector 20, ultraviolet signal for detecting ultraviolet detector amplifies, noise reduction process to be to obtain alarm control signal, alarm control signal to indicate partial discharge of switchgear for the ultraviolet indicating member controlling alarm and the counter of alarm carries out record to the number of times of partial discharge of switchgear, partial discharge of switchgear once, the number of times recorded in counter adds 1, i.e. each partial discharge of switchgear, the number of times of counter records all adds 1.Power supply unit is used for providing power supply for ultraviolet detector and alarm.
In alarm, one end of the first resistance R1 is connected with the collector of the positive pole V+ of power supply unit, the first triode Q1, one end of the first electric capacity C1 and the power input Vcc of ultraviolet detector respectively; The other end ground connection of the first electric capacity C1, and be also connected with the negative pole V-of power supply unit; The resistance two ends of potentiometer W are connected with the other end of the first resistance R1 and the output terminal Out of ultraviolet detector 20 respectively, and the sliding end of potentiometer is connected with the output terminal Out of ultraviolet detector 20; The base stage of the first triode Q1 is connected with the output terminal Out of ultraviolet detector 20, the emitting stage of the first triode Q1 is connected with the positive pole of the light emitting diode of photo-coupler OC, the minus earth of the light emitting diode of photo-coupler OC, the collector of the phototriode of photo-coupler OC is connected with the positive pole V+ of power supply unit, and the emitting stage of the phototriode of photo-coupler OC is connected with the base stage of the second triode Q2; The emitting stage ground connection of the second triode Q2, and be also connected with the negative pole V-of power supply unit, the ground end Gnd of ultraviolet detector; The collector of the second triode Q2 is connected with one end of the coil of power relay J, the other end of the coil of power relay J is connected with the positive pole V+ of power supply unit, one end of the normally opened contact of power relay J is connected with the positive pole V+ of power supply unit, the other end of the normally opened contact of power relay J is through counter 10 ground connection, and the other end of the normally opened contact of power relay J is also successively through the second resistance R2, ultraviolet indicating member ground connection.Ultraviolet indicating member is preferably LED, and represent with symbol LED1 in Fig. 1, namely when partial discharge of switchgear, LED1 lights, and when shelf depreciation does not occur switch cubicle, LED1 extinguishes.The number of times that counter is used for producing partial discharge of switchgear ultraviolet signal counts, and during application, often receiving a discharge pulse signal, number of times adds 1.
Alarm also comprises: the 3rd resistance R3 and power supply indicating member; One end of 3rd resistance R3 is connected with the positive pole V+ of power supply, and the other end of the 3rd resistance R3 is through power supply indicating member ground connection.Power supply indicating member is LED, represents in Fig. 1 with symbol LED2, and namely power supply unit is ultraviolet detector 20 and alarm when powering, and LED2 lights, and now the electric power thus supplied of ultraviolet detector 20 and alarm is normal, can normally work; When power supply unit powers to ultraviolet detector 20 and alarm, LED2 extinguishes, and now the electric power thus supplied of ultraviolet detector 20 and alarm is abnormal, cisco unity malfunction.In order to distinguish ultraviolet indicating member and power supply indicating member, can select the LED of different colours, such as red LED lamp is used to indicate ultraviolet, and green LED lamp is used to indicate power supply.
Alarm also comprises: uitraviolet intensity pilot lamp, the intensity of the ultraviolet signal that it produces when being used to indicate partial discharge of switchgear, intensity is larger, the brightness of uitraviolet intensity pilot lamp is larger, it is connected between the positive pole V+ of power supply unit and the collector of the second triode Q2, namely in parallel with power relay.
When application switch cabinet discharge monitoring device, ultraviolet detector 20 and alarm can establish structure for integral installation, it is positioned at a housing, the probe of ultraviolet detector 20 by through hole on the cabinet wall of the through-hole alignment switch cubicle on housing with the ultraviolet signal produced during search switch cabinet shelf depreciation.Ultraviolet detector 20 and alarm can also be split installing structure, and ultraviolet detector is positioned at switch cubicle, and are arranged on inside the cabinet wall that keeps a safe distance with current-carrying part in switch cubicle on (i.e. interior cabinet wall), and alarm is positioned at outside switch cubicle.
In reality, the model of the model of the first triode Q1 and the second triode Q2 can be the model of C1815, photo-coupler OC can be PC617-2, power relay J can be SRD-03VDC.
The principle of work of the partial discharge of switchgear monitoring device that the embodiment of the present invention provides is as follows:
Namely this device utilizes during switch cubicle electrical discharge and produces ultraviolet principle, when there is electric discharge in equipment current-carrying part in switch cubicle, ultraviolet signal can be sent, this ultraviolet signal gathers through sniffer (i.e. ultraviolet detector), carry out amplifying, a series of process such as noise reduction, the coil voltage of power relay exceedes operation voltage, i.e. action, normally opened contact is closed, namely produce alarm control signal, counter and LED1 loop are connected, and counter adds 1, ultraviolet indicating member LED1 lights, and namely sends electric discharge alerting signal and recorded information.
In sum, the beneficial effect that brings of the embodiment of the present invention is as follows:
This device can sensitive seizure discharge scenario, and is reflected by pilot lamp and counter, is convenient to operation maintenance personnel inspection and judges; This device compares other electric discharge monitoring means, has cheap, easy for installation, is convenient to the advantages such as inspection; Importantly, the arrangement achieves the monitoring to intermittent discharge in switch cubicle, also make the round-the-clock Real-Time Monitoring of switch cubicle become possibility, be equipment fault analysis in switch cubicle, Data support is provided; There is good promotion prospect.
As known by the technical knowledge, the present invention can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (7)
1. a partial discharge of switchgear monitoring device, is characterized in that, described partial discharge of switchgear monitoring device comprises:
Ultraviolet detector, for the ultraviolet signal produced during search switch cabinet shelf depreciation;
Alarm, be connected with described ultraviolet detector, for amplifying described ultraviolet signal, noise reduction process to obtain alarm control signal, described alarm control signal to indicate described partial discharge of switchgear for the ultraviolet indicating member controlling described alarm and the counter of alarm carries out record to the number of times of described partial discharge of switchgear; And
Power supply unit, for providing power supply for described ultraviolet detector and described alarm.
2. partial discharge of switchgear monitoring device according to claim 1, it is characterized in that, in described alarm, one end of the first resistance is connected with the power input of the positive pole of described power supply unit, the collector of the first triode, one end of the first electric capacity and described ultraviolet detector respectively; The other end ground connection of described first electric capacity, and be also connected with the negative pole of described power supply unit;
The resistance two ends of potentiometer are connected with the other end of the first resistance and the output terminal of described ultraviolet detector respectively, and the sliding end of described potentiometer is connected with the output terminal of described ultraviolet detector;
The base stage of described first triode is connected with the output terminal of described ultraviolet detector, the described emitting stage of the first triode is connected with the positive pole of the light emitting diode of photo-coupler, the minus earth of the light emitting diode of described photo-coupler, the collector of the phototriode of described photo-coupler is connected with the positive pole of described power supply unit, and the emitting stage of the phototriode of described photo-coupler is connected with the base stage of the second triode;
The emitting stage ground connection of described second triode, and be also connected with the negative pole of described power supply unit and the ground end of described ultraviolet detector;
The described collector of the second triode is connected with one end of the coil of power relay, the other end of the coil of described power relay is connected with the positive pole of described power supply unit, one end of the normally opened contact of described power relay is connected with the positive pole of described power supply unit, the other end of the normally opened contact of described power relay is through counter ground connection, and the other end of the normally opened contact of described power relay is also successively through the second resistance, described ultraviolet indicating member ground connection.
3. partial discharge of switchgear monitoring device according to claim 2, is characterized in that, described alarm also comprises: the 3rd resistance and power supply indicating member;
One end of described 3rd resistance is connected with the positive pole of described power supply, and the other end of described 3rd resistance is through described power supply indicating member ground connection.
4. partial discharge of switchgear monitoring device according to claim 3, is characterized in that, described ultraviolet indicating member and described power supply indicating member are LED.
5. partial discharge of switchgear monitoring device according to claim 1, it is characterized in that, described ultraviolet detector and described alarm integral installation are located in a housing, the ultraviolet signal of probe by producing when through hole is to detect described partial discharge of switchgear on the shell of switch cubicle described in the through-hole alignment on described housing of described ultraviolet detector.
6. partial discharge of switchgear monitoring device according to claim 1, is characterized in that, on inside the cabinet wall that described ultraviolet detector is positioned at described switch cubicle, described alarm is positioned at outside described switch cubicle.
7. partial discharge of switchgear monitoring device according to claim 2, is characterized in that, described alarm also comprises: the uitraviolet intensity pilot lamp being used to indicate described partial discharge of switchgear intensity;
Described uitraviolet intensity pilot lamp is connected between the positive pole of described power supply unit and the collector of described second triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076715.XA CN104698351B (en) | 2015-02-12 | 2015-02-12 | switch cabinet partial discharge monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076715.XA CN104698351B (en) | 2015-02-12 | 2015-02-12 | switch cabinet partial discharge monitoring device |
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| Publication Number | Publication Date |
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| CN104698351A true CN104698351A (en) | 2015-06-10 |
| CN104698351B CN104698351B (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510076715.XA Active CN104698351B (en) | 2015-02-12 | 2015-02-12 | switch cabinet partial discharge monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161383A (en) * | 2019-04-30 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | A kind of detection device for partial discharge of switch cabinet |
Citations (6)
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| CN2064067U (en) * | 1989-11-16 | 1990-10-17 | 崔正宪 | Discharge recording device |
| CN201355384Y (en) * | 2009-02-20 | 2009-12-02 | 厦门红相电力设备股份有限公司 | System for detecting and managing partial discharge of switch cabinet on-line |
| US20100073008A1 (en) * | 2008-09-24 | 2010-03-25 | Siemens Energy, Inc. | Partial Discharge Coupler for Application on High Voltage Generator Bus Works |
| CN102288879A (en) * | 2011-04-25 | 2011-12-21 | 天津大学 | Ultrasonic detection device for partial discharge of switchgear based on wireless network |
| CN102707205A (en) * | 2012-06-06 | 2012-10-03 | 扬州新扬开关设备有限公司 | Safety alarm equipment of high voltage switch cabinet |
| CN103389447A (en) * | 2013-07-31 | 2013-11-13 | 成都电业局双流供电局 | Non-contact ultraviolet pulse discharge monitoring device |
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2015
- 2015-02-12 CN CN201510076715.XA patent/CN104698351B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2064067U (en) * | 1989-11-16 | 1990-10-17 | 崔正宪 | Discharge recording device |
| US20100073008A1 (en) * | 2008-09-24 | 2010-03-25 | Siemens Energy, Inc. | Partial Discharge Coupler for Application on High Voltage Generator Bus Works |
| CN201355384Y (en) * | 2009-02-20 | 2009-12-02 | 厦门红相电力设备股份有限公司 | System for detecting and managing partial discharge of switch cabinet on-line |
| CN102288879A (en) * | 2011-04-25 | 2011-12-21 | 天津大学 | Ultrasonic detection device for partial discharge of switchgear based on wireless network |
| CN102707205A (en) * | 2012-06-06 | 2012-10-03 | 扬州新扬开关设备有限公司 | Safety alarm equipment of high voltage switch cabinet |
| CN103389447A (en) * | 2013-07-31 | 2013-11-13 | 成都电业局双流供电局 | Non-contact ultraviolet pulse discharge monitoring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161383A (en) * | 2019-04-30 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | A kind of detection device for partial discharge of switch cabinet |
| CN110161383B (en) * | 2019-04-30 | 2020-07-28 | 云南电网有限责任公司电力科学研究院 | Switch cabinet partial discharge detection device |
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| CN104698351B (en) | 2019-12-10 |
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Inventor after: Liu Shihao Inventor after: Guo Chao Inventor after: Cai Xiaochen Inventor after: Zhou Qian Inventor after: Jia Xiaosong Inventor after: Zhao Jianhua Inventor after: Gao Song Inventor after: Li Yong Inventor after: Ma Ruidong Inventor after: Hu Gang Inventor after: Zhang Shiqi Inventor before: Liu Shihao Inventor before: Cai Xiaochen Inventor before: Jia Xiaosong Inventor before: Zhao Jianhua Inventor before: Gao Song Inventor before: Li Yong Inventor before: Ma Ruidong Inventor before: Hu Gang Inventor before: Zhang Shiqi Inventor before: Guo Chao |
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