CN205301502U - From triggering formula power transmission line insulator pollution flashover early warning device - Google Patents
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- CN205301502U CN205301502U CN201520888747.5U CN201520888747U CN205301502U CN 205301502 U CN205301502 U CN 205301502U CN 201520888747 U CN201520888747 U CN 201520888747U CN 205301502 U CN205301502 U CN 205301502U
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Abstract
The utility model discloses a from triggering formula power transmission line insulator pollution flashover early warning device, including leakage current sensor, device main part, the leakage current sensor pass through the buckle with the device body is connected, device main part low pass filter, rectifier circuit, steeper, comparator, singlechip, GPRS module, battery, humidity transducer, wireless communication module, GPRS antenna, wireless communication antenna, the leakage current sensor low pass filter rectifier circuit the steeper the comparator the singlechip is consecutive to be connect, the singlechip respectively with the GPRS module the battery humidity transducer wireless communication module is connected, the GPRS module is passed through the GPRS antenna is communicated with the mobile device, wireless communication module passes through the wireless communication antenna is communicated with the handheld equipment of patrolling and examining. The utility model discloses a filthy condition of timing detection insulator and in the long -pending dirty pollution flashover early warning of sending when serious.
Description
Technical field
This utility model relates to a kind of from trigger-type electric transmission line isolator pre-warning device, belongs to electric transmission line isolator on-line monitoring technique field.
Background technology
Insulator is one of critical component of overhead power transmission transmission line of electricity, and the quality of its performance directly influences the safe operation of whole piece transmission line of electricity.
With ecological deterioration, polluting and increase the weight of, grid pollution flashover accident progressively coverage is wide, seriously threatens the safe operation of transmission facility. In atmospheric environment, running insulator to be affected by factors such as nature airborne dust, industrial discharges, surface deposits dunghill gradually, under the impact of the various terrible weathers such as mist, dew, rain, snow, the electrical strength making insulator is substantially reduced, thus causing flashover to cause the accident. According to statistics, in the total accident number of power system, pollution flashover accident is only second to damage to crops caused by thunder and occupies second, but owing to the automatic reclosing success rate of pollution flashover accident is very low, its 10 times that loss is lightening hazard caused.
Pre-warning realizes typically via the pollution level judging insulator surface, international conference on large HV electric systems the 33rd committee recommends 5 kinds and measures filthy method, i.e. equivalent salt density (ESDD) method, integration surface pollution layer conductivity method, pulse counting method, leakage current method and insulator contamination voltage gradient method. Wherein only having leakage current is dynamic characterization parameter, is presently believed to be the pre-warning characteristic quantity having researching value most.
Leakage current refers to that insulator is arrived the electric current on ground by the surface pollution layer that flows through measured by the time of tide under applied voltage. It is that one is slipped through the net electric current, escape electric current. It is weather, voltage, the result of filthy three elements concentrated expression and final effect, is dynamic parameter, is considered as reacting the parameter of a science of pollution degree.It is voltage, weather, the concentrated expression of filthy three elements and final result, therefore is called dynamic parameter. When voltage and weather conditions one timing, insulator surface leakage current is directly proportional to the filthy order of severity. Insulator leakage current significantly determines relation with also existing between pollution flashover voltage, it is possible to estimate to a great extent and the pollution flashover voltage of prediction insulator and evaluate the filthy level of insulator.
It is a kind of based on leakage current insulator contamination method for early warning and system thereof that application number has been the patent disclosure of CN201410065872.6, mainly the leakage current of support insulator extracted and obtain a neural network model, the final gradation for surface pollution to insulator by a series of signal processing and digital-to-analogue conversion.
To be the patent disclosure of 201410257722.5 a kind of exchanges the on-Line Monitor Device of insulator leakage and corona pulse electric current for application number, by near the opening shutoff ring of a metal forming bonding on the full skirt near the insulator cap of shaft tower, draw leakage and corona pulse electric current, it is converted into a digital voltage signal by a series of conversion circuit, this signal is sent to host computer again process, it is achieved the monitoring to insulator contamination state.
It is clear that leakage current method is the effective ways that research insulation is filthy, by the measurement of insulator leakage current can effectively be assessed the filthy level of insulation, thus the pollution flashover probability of insulator is estimated. Existing leakage current detection and pre-warning scheme can realize the monitoring to insulator contamination state, but a table apparatus is merely able to the leakage current at one insulator place of detection, if needing multiple spot to detect, needing multiple stage detecting device, having high input, and cost is high. Secondly legacy devices and supporting sensor adopt cable to link together mostly, very easily introducing high potential when there is the disasters such as thunderbolt, making device damage.
Utility model content
The purpose of this utility model is in that the defect overcoming prior art to exist, the dependency according to leakage current and insulator contamination degree, it is proposed to a kind of from trigger-type electric transmission line isolator pre-warning device.
This utility model adopts the following technical scheme that a kind of from trigger-type electric transmission line isolator pre-warning device, it is characterized in that, including leakage current sensor, apparatus main body, described leakage current sensor is connected with described device body by buckle, described apparatus main body low pass filter, rectification circuit, steeper, comparator, single-chip microcomputer, GPRS module, battery, humidity sensor, wireless communication module, GPRS antenna, wireless communication antenna, described leakage current sensor, described low pass filter, described rectification circuit, described steeper, described comparator, described single-chip microcomputer is sequentially connected and connects, described single-chip microcomputer respectively with described GPRS module, described battery, described humidity sensor, described wireless communication module is connected, described GPRS module is communicated with mobile equipment by described GPRS antenna, described wireless communication module is communicated by described wireless communication antenna and hand-held inspection device.
Preferably, described leakage current sensor is used for detecting the leakage current of insulator, and will leak out electric current and be changed into voltage signal; The high fdrequency component that described low pass filter is used for filtering in leakage current is with exclusive PCR; Described rectification circuit is used for ac signal is converted into DC signal; Described steeper includes several resistance, and the d. c. voltage signal being used for obtaining rectification circuit is divided into 5 grades from big to small;Described comparator is used for the size of value and the comparator preset value comparing 5 voltage signals that steeper produces, and sends 5 level signals to the 5 of single-chip microcomputer I/O interfaces; Described humidity sensor is used for detecting air humidity and by air humidity real-time data transmission to single-chip microcomputer, described battery is used for powering to described leakage current sensor, described device body, described single-chip microcomputer is used for the state reading 5 I/O interfaces and real-time empty air humidity degrees of data, and judges the pollution level of insulator.
Preferably, described leakage current sensor includes being arranged at the shell of outside, iron core, coil, and described iron core is arranged at the inside of described shell, and described coil is wound on described iron core, the inside of described iron core is additionally provided with rubber ring, and the centre of described leakage current sensor is provided with opening.
Preferably, described apparatus main body is additionally provided with SD card slot, is used for inserting SD card, the filthy data of record insulator.
Preferably, described leakage current sensor is loaded on the steel cap of the first insulator of electric transmission line isolator low-pressure end by described rubber ring sleeve, and rubber ring is used for strengthening the tightness of suit.
Preferably, the model of described single-chip microcomputer is MSP430F2274.
The beneficial effect that this utility model reaches: the utility model proposes a kind of from trigger-type electric transmission line isolator pre-warning device, have strong adaptability, cost is low, low in energy consumption, measure advantage accurately, multi-point monitoring can be realized simultaneously, can regularly detect the filthy situation of insulator and send pre-warning when contamination is serious, reducing the loss of power system.
Accompanying drawing explanation
Fig. 1 is that a kind of structure from trigger-type electric transmission line isolator pre-warning device of the present utility model connects to form schematic diagram.
Fig. 2 is a kind of construction profile schematic diagram from trigger-type electric transmission line isolator pre-warning device of the present utility model.
Fig. 3 is a kind of mounting structure schematic diagram from trigger-type electric transmission line isolator pre-warning device of the present utility model.
Fig. 4 is a kind of workflow diagram from trigger-type electric transmission line isolator pre-warning device of the present utility model.
The implication of labelling in figure: 101-leakage current sensor, 102-low pass filter, 103-rectification circuit, 104-steeper, 105-comparator, 106-single-chip microcomputer, 107-GPRS module, 108-battery, 109-humidity sensor, 110-wireless communication module, 201-iron core, 202-coil, 203-shell, 204-rubber ring, 205-buckle, 206-opening, 207-battery, 208-circuit, 209-GPRS antenna, 210-wireless communication antenna, 211-SD card slot, 41-steel cap, 42-full skirt, 43-steel foot, 44-leakage current sensor, 45-rubber ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described. Following example are only for clearly illustrating the technical solution of the utility model, and can not limit protection domain of the present utility model with this.
Fig. 1 is that a kind of structure from trigger-type electric transmission line isolator pre-warning device of the present utility model connects to form schematic diagram, wherein 101-leakage current sensor, 102-low pass filter, 103-rectification circuit, 104-steeper, 105-comparator, 106-single-chip microcomputer, 107-GPRS module, 108-battery, 109-humidity sensor, 110-wireless communication module. The utility model proposes a kind of from trigger-type electric transmission line isolator pre-warning device, it is characterized in that, including leakage current sensor 101, apparatus main body, described leakage current sensor 101 is connected with described device body by buckle 205, maintenance can be disassembled when device breaks down easily, also allow for changing battery and maintenance;Described apparatus main body low pass filter 102, rectification circuit 103, steeper 104, comparator 105, single-chip microcomputer 106, GPRS module 107, battery 108, humidity sensor 109, wireless communication module 110, GPRS antenna 209, wireless communication antenna 210, described leakage current sensor 101, described low pass filter 102, described rectification circuit 103, described steeper 104, described comparator 105, described single-chip microcomputer 106 is sequentially connected and connects, described single-chip microcomputer 106 respectively with described GPRS module 107, described battery 108, described humidity sensor 109, described wireless communication module 110 is connected, described GPRS module 107 is communicated with mobile equipment by described GPRS antenna 209, described wireless communication module 110 is communicated with hand-held inspection device by described wireless communication antenna 210.
Described leakage current sensor 101 is used for detecting the leakage current of insulator, and will leak out electric current and be changed into voltage signal; The high fdrequency component that described low pass filter 102 is used for filtering in leakage current is with exclusive PCR; Described rectification circuit 103 is used for ac signal is converted into DC signal; Described steeper 104 includes several resistance, is used for the d. c. voltage signal that rectification circuit 103 obtains is divided into 5 grades from big to small; Described comparator 105 is used for the size of value and comparator 105 preset value comparing 5 voltage signals that steeper 104 produces, and sends 5 level signals to 5 I/O interfaces of single-chip microcomputer 106; Described humidity sensor 109 is used for detecting air humidity and by air humidity real-time data transmission to single-chip microcomputer 106, described battery 108 is used for powering to described leakage current sensor 101, described device body, described single-chip microcomputer 106 is used for the state reading 5 I/O interfaces and real-time empty air humidity degrees of data, and judges the pollution level of insulator; The model of described single-chip microcomputer 106 is MSP430F2274.
Fig. 2 is a kind of construction profile schematic diagram from trigger-type electric transmission line isolator pre-warning device of the present utility model, wherein 201-ferrum core, 202-coil, 203-shell, 204-rubber ring, 205-buckle, 206-opening, 207-battery, 208-circuit, 209-GPRS antenna, 210-wireless communication antenna, 211-SD card slot, described leakage current sensor 101 includes the shell 203 being arranged at outside, iron core 201, coil 202, described iron core 201 is arranged at the inside of described shell 203, described coil 202 is wound on described iron core 201, the inside of described iron core 201 is additionally provided with rubber ring 204, the centre of described leakage current sensor 101 is provided with opening 206, described apparatus main body is additionally provided with SD card slot 211, is used for inserting SD card, the filthy data of record insulator. the iron core 201 of leakage current sensor 101, coil 202 and shell 203 are constituted by soft material, have one layer of soft rubber circle 204 at leakage current sensor inwall. due to the special canoe of coil windings, leakage current sensor 101 can separate from middle opening 206 and be enclosed within electric transmission line isolator steel cap 41 to detect the leakage current of electric transmission line isolator.
Fig. 3 is a kind of mounting structure schematic diagram from trigger-type electric transmission line isolator pre-warning device of the present utility model, wherein 41-steel cap, 42-full skirt, 43-steel foot, 44-leakage current sensor, 45-rubber ring. Described leakage current sensor 44 is set on the steel cap 41 of first insulator of electric transmission line isolator low-pressure end by described rubber ring 45, and rubber ring 45 is used for strengthening the tightness of suit.
Under certain damp condition, the development of insulator surface flashover and the magnitude relationship of leakage current are as shown in table 1, it can be seen that leakage current is more big, and the probability of flashover of insulator is more big. 5 level signal (P that this device can be received by single-chip processor i/o interface1��P2��P3��P4��P5) judge now insulator leakage current size, and the filthy state of now insulator is analyzed in conjunction with the aggregation of data of humidity sensor.
Table 1
This utility model is in low power operation state in the most of the time, realizes 3 kinds of functions by interrupt signal: pre-warning, timing detection and equipment routing inspection. When P1, P2, P3, P4 are high level or P1, P2, P3, P4, P5 are high level, representing leakage current and already more than 200mA, insulator has great flashover dangerous, can trigger I/O and interrupt, make this utility model send early warning; When default tick interrupt is triggered, single-chip microcomputer 106 can check the filthy state of insulator, if pollution level is relatively light, then enters in SD card by insulator state record, if pollution level ratio is more serious, then send relevant information to mobile equipment by GPRS antenna 209; Triggering communicating interrupt when patrolling and examining signal when what wireless communication module 110 received that hand-held inspection device sends, this utility model can check whether can be properly functioning and reply hand-held inspection device, reaches the purpose patrolled and examined. When, after EOI, single-chip microcomputer 106 can make equipment return to low power operation state automatically.
Three kinds of functions of the present utility model are described in further detail below, and Fig. 4 is a kind of workflow diagram from trigger-type electric transmission line isolator pre-warning device of the present utility model.
(1) periodic monitor function
As shown in Figure 4, the filthy state of this utility model energy periodic monitor electric transmission line isolator being sent on mobile equipment by GPRS signal. This utility model can preset a tick interrupt, to realize the function of timing detection, can control the interval of detection by adjusting the waveform of tick interrupt.
Periodic monitor of the present utility model comprises the steps: when single-chip microcomputer 106 receives clock interrupt signal, the impact always interrupted to get rid of other interruptions can be closed, in order to avoid affecting equipment work, the processor of single-chip microcomputer 106 reads I/O signal, judges the contamination situation of insulator in conjunction with the data of humidity sensor 109; If pollution level is lighter, then insulator contamination situation is stored in SD card and preserves, if insulator contamination degree is heavier, then by GPRS module 107, contamination data is sent on mobile equipment, has thus reached the purpose of periodic monitor insulator contamination situation; When data end of transmission, single-chip microcomputer 106 can reopen total interruption, and this utility model recovers low power operation state.
(2) equipment routing inspection function
As shown in Figure 4, this utility model can receive radio patrol checking signal that hand-held inspection device sends and carry out oneself's detection, thus realizing equipment routing inspection. When this utility model needs to patrol and examine, send wireless communication signal by hand-held inspection device, wireless communication signal can wake on wireless communication module 110, wireless communication module 110 triggers communicating interrupt.
Equipment routing inspection method of the present utility model comprises the steps: when single-chip microcomputer 106 receives communicating interrupt signal, can close the impact always interrupted to get rid of other interruptions, and judge that whether this utility model is called; If this utility model is called, opening selftest module, whether detecting device can be properly functioning and by wireless communication module 110, relevant information is replied to hand-held inspection device;When data end of transmission, single-chip microcomputer 106 can reopen total interruption, and this utility model recovers low power operation state; If this utility model does not have called, total interruption directly opened by single-chip microcomputer 106, and this utility model recovers low power operation state.
(3) pre-warning function
As shown in Figure 4, this utility model can send alarm when electric transmission line isolator contamination is more serious to mobile equipment, it is achieved pre-warning function. When P1, P2, P3, P4 are high level or P1, P2, P3, P4, P5 are high level, representing leakage current and already more than 200mA, insulator has great flashover dangerous, now absolutely can be triggered in the I/O of single-chip microcomputer 106.
Pre-warning of the present utility model comprises the steps: when single-chip microcomputer 106 receives I/O interrupt signal, the impact always interrupted to get rid of other interruptions can be closed, judge the state of I/O interface, and insulator relevant information is moved on equipment by GPRS module 107, be simultaneously emitted by pre-warning; After said process terminates, total interruption opened by single-chip microcomputer 106, and this utility model recovers low power operation state.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the premise without departing from this utility model know-why; can also making some improvement and deformation, these improve and deformation also should be regarded as protection domain of the present utility model.
Claims (6)
1. one kind from trigger-type electric transmission line isolator pre-warning device, it is characterized in that, including leakage current sensor, apparatus main body, described leakage current sensor is connected with described device body by buckle, described apparatus main body low pass filter, rectification circuit, steeper, comparator, single-chip microcomputer, GPRS module, battery, humidity sensor, wireless communication module, GPRS antenna, wireless communication antenna, described leakage current sensor, described low pass filter, described rectification circuit, described steeper, described comparator, described single-chip microcomputer is sequentially connected and connects, described single-chip microcomputer respectively with described GPRS module, described battery, described humidity sensor, described wireless communication module is connected, described GPRS module is communicated with mobile equipment by described GPRS antenna, described wireless communication module is communicated by described wireless communication antenna and hand-held inspection device.
2. one according to claim 1 is from trigger-type electric transmission line isolator pre-warning device, it is characterised in that described leakage current sensor is used for detecting the leakage current of insulator, and will leak out electric current and be changed into voltage signal; The high fdrequency component that described low pass filter is used for filtering in leakage current is with exclusive PCR; Described rectification circuit is used for ac signal is converted into DC signal; Described steeper includes several resistance, and the d. c. voltage signal being used for obtaining rectification circuit is divided into 5 grades from big to small; Described comparator is used for the size of value and the comparator preset value comparing 5 voltage signals that steeper produces, and sends 5 level signals to the 5 of single-chip microcomputer I/O interfaces; Described humidity sensor is used for detecting air humidity and by air humidity real-time data transmission to single-chip microcomputer, described battery is used for powering to described leakage current sensor, described device body, described single-chip microcomputer is used for the state reading 5 I/O interfaces and real-time empty air humidity degrees of data, and judges the pollution level of insulator.
3. one according to claim 1 is from trigger-type electric transmission line isolator pre-warning device, it is characterized in that, described leakage current sensor includes being arranged at the shell of outside, iron core, coil, described iron core is arranged at the inside of described shell, described coil is wound on described iron core, the inside of described iron core is additionally provided with rubber ring, and the centre of described leakage current sensor is provided with opening.
4. one according to claim 1 is from trigger-type electric transmission line isolator pre-warning device, it is characterised in that be additionally provided with SD card slot on described apparatus main body, is used for inserting SD card, the filthy data of record insulator.
5. one according to claim 3 is from trigger-type electric transmission line isolator pre-warning device, it is characterized in that, described leakage current sensor is loaded on the steel cap of the first insulator of electric transmission line isolator low-pressure end by described rubber ring sleeve, and rubber ring is used for strengthening the tightness of suit.
6. one according to claim 1 is from trigger-type electric transmission line isolator pre-warning device, it is characterised in that the model of described single-chip microcomputer is MSP430F2274.
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| CN201520888747.5U CN205301502U (en) | 2015-11-09 | 2015-11-09 | From triggering formula power transmission line insulator pollution flashover early warning device |
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| CN201520888747.5U CN205301502U (en) | 2015-11-09 | 2015-11-09 | From triggering formula power transmission line insulator pollution flashover early warning device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242187A (en) * | 2015-11-09 | 2016-01-13 | 江苏省电力公司检修分公司 | Self-triggering power transmission line insulator pollution flashover early-warning device |
| CN105572538A (en) * | 2016-01-29 | 2016-05-11 | 深圳市均方根科技有限公司 | Electric leakage tester with wireless communication function |
| CN110031727A (en) * | 2019-05-23 | 2019-07-19 | 唐智科技湖南发展有限公司 | A kind of fault monitoring system and insulator breakdown intelligence operation platform of insulator |
| EP4025920A4 (en) * | 2019-09-05 | 2023-08-30 | Aclara Technologies LLC | System and method for sensing one or more power lines |
-
2015
- 2015-11-09 CN CN201520888747.5U patent/CN205301502U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242187A (en) * | 2015-11-09 | 2016-01-13 | 江苏省电力公司检修分公司 | Self-triggering power transmission line insulator pollution flashover early-warning device |
| CN105572538A (en) * | 2016-01-29 | 2016-05-11 | 深圳市均方根科技有限公司 | Electric leakage tester with wireless communication function |
| CN105572538B (en) * | 2016-01-29 | 2019-02-05 | 深圳市均方根科技有限公司 | A kind of leakage detector with wireless communication function |
| CN110031727A (en) * | 2019-05-23 | 2019-07-19 | 唐智科技湖南发展有限公司 | A kind of fault monitoring system and insulator breakdown intelligence operation platform of insulator |
| CN110031727B (en) * | 2019-05-23 | 2021-08-10 | 唐智科技湖南发展有限公司 | Fault monitoring system of insulator and intelligent operation and maintenance platform for insulator fault |
| EP4025920A4 (en) * | 2019-09-05 | 2023-08-30 | Aclara Technologies LLC | System and method for sensing one or more power lines |
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Address after: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee after: WUHAN University Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. MAINTENANCE BRANCH Address before: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee before: Wuhan University Patentee before: MAINTENANCE DIVISION OF STATE GRID JIANGSU ELECTRIC POWER Co. Address after: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee after: WUHAN University Patentee after: MAINTENANCE DIVISION OF STATE GRID JIANGSU ELECTRIC POWER Co. Address before: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee before: Wuhan University Patentee before: JIANGSU ELECTRIC POWER COMPANY MAINTENANCE BRANCH |