CN205139349U - Arrester discharge counter and leakage current table check gauge - Google Patents

Arrester discharge counter and leakage current table check gauge Download PDF

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Publication number
CN205139349U
CN205139349U CN201520930861.XU CN201520930861U CN205139349U CN 205139349 U CN205139349 U CN 205139349U CN 201520930861 U CN201520930861 U CN 201520930861U CN 205139349 U CN205139349 U CN 205139349U
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CN
China
Prior art keywords
leakage current
current
discharge
lightning arrester
tester
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
CN201520930861.XU
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Chinese (zh)
Inventor
戈祥麟
李滨
温增飞
杨臻
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.)
Suzhou Power Supply Co Ltd of Jiangsu Electric Power Co
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Suzhou Power Supply Co Ltd of Jiangsu Electric Power Co
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Priority to CN201520930861.XU priority Critical patent/CN205139349U/en
Application granted granted Critical
Publication of CN205139349U publication Critical patent/CN205139349U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an arrester discharge counter and leakage current table check gauge, wherein: including the dc -battery, invertion power supply and auxiliary electrical power source are connected respectively to the dc -battery, auxiliary electrical power source connects main control unit, invertion power supply inserts parallelly connected discharge counter detection circuitry who sets up and leakage current table calibration circuit, invertion power supply turns into the alternating current with the direct current, discharge counter detection circuitry is including the rectifier filter and the high -pressure discharge controller that connect gradually, the rectifier filter is with the whole direct current that is of alternating current, the high -pressure discharge controller discharges to the discharge counter, whether observe the discharge counter moves, leakage current table calibration circuit is including the voltage regulator, controlling resistor and the leakage current table that connect gradually, and the leakage current that produces through leakage current table calibration circuit is through handing over dc voltage changer to convert true RMS's DC signal into, and this DC signal is read and is shown by main control unit after the AD conversion is carried out to the AD module.

Description

Lightning arrester discharge register and leakage current table tester
Technical field
The utility model relates to a kind of tester of power domain lightning stroke counter, particularly relates to a kind of tester with leakage current table in detection, verification lightning stroke counter.
Background technology
The research and development of lightning arrester discharge register and leakage current table tester project, the site test of the arrester discharge counter of various electric pressure can be widely used in, after equipment development success of the test, on-the-spot arrester discharge counter and the online detection of reometer can be realized, Timeliness coverage equipment deficiency, the defective lightning arrester of timely planned replacing, avoids and damages passive interruption maintenance completely at lightning arrester, and impact is powered normally.Reduce power off time, create considerable Social and economic benef@, contribute, for strong backing is done in the reliable and stable operation of electrical network for power system safety and stability runs.
Whether whether normally then have influence on whole region electric power networks exists hidden danger to lightning arrester.Therefore, lightning stroke counter is verified, Clinical significance of detecting is great.Current lightning stroke counter on the market, energy on-line monitoring lightning arrester leakance and number of lightning strokes, can effectively detect lightning arrester inherent vice, find surge arrester failure early, the defects such as especially entirety is made moist, inner member valve block is aging.Lightning arrester leakance and discharge counter are generally serially connected between lightning arrester and earthing pole, direct-detection lightning arrester leakance, record lightning arrester discharge number of times simultaneously.In actual motion, when there is the situation of poor sealing, lightning arrester leakance and discharge counter may enter moisture or moisture, thus make its inner member corrosion, or other reasons causes such as: counter can not regular event, the problems such as leakage current instruction is inaccurate.So need regularly to verify lightning arrester leakance and discharge counter.
Traditional lightning arrester discharge register and leakage current table detection method are that use two equipment carry out respectively.Lightning arrester discharge register is that the method for a use high-voltage capacitance electric discharge carries out simulation thunderbolt, makes the action of lightning arrester discharge register and counts; The current circuit of leakage current of an arrester table owing to being a high resistant, general electric current calibration equipment is tested this reometer and is had certain difficulty.
Summary of the invention
The technical problems to be solved in the utility model be to provide one can detect simultaneously arrester discharge counter whether normal, detect leakage current table whether qualified and the convenient, fast and accurate lightning arrester discharge register of testing process and leakage current table tester.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
Lightning arrester discharge register and leakage current table tester, wherein: comprise dc-battery, dc-battery connects inverter and accessory power supply respectively, accessory power supply connects master controller, inverter accesses the discharge counter testing circuit and leakage current table checking circuit that are arranged in parallel, DC conversion is alternating current by inverter, discharge counter testing circuit comprises the rectifier filer and effluve controller that connect successively, rectifier filer by whole for alternating current be direct current, effluve controller discharges to discharge counter, observe discharge counter whether action, leakage current table checking circuit comprises the pressure regulator, adjustable resistance and the leakage current table that connect successively, the leakage current produced through leakage current table checking circuit to be converted to the direct current signal of real effective through alterating and direct current pressure converter, this direct current signal carries out, after A/D conversion, being read and show by master controller through A/D module.
For optimizing technique scheme, the concrete measure taked also comprises:
Above-mentioned inverter exports 220V/50Hz sine voltage.
In above-mentioned discharge counter testing circuit, high voltage direct current, after rectifying and wave-filtering, is stored in discharge counter testing circuit internal capacitor two ends by alternating current, then controls output voltage test electric discharge counting by effluve controller.
Above-mentioned effluve controller is relay.
Above-mentioned master controller connection control button, display and access interface.
Above-mentioned dc-battery is connected with charge controller, and when external power source charges to dc-battery, charge controller controls charging process.
Above-mentioned master controller is connected with pressure regulator and adjustable resistance, and master controller, by regulating voltage and the resistance of leakage current table checking circuit, controls the size of leakage current table checking circuit output current.
Above-mentioned lightning arrester discharge register and leakage current table tester comprise metal chassis shell, can be connected by the panel ground stud of metal chassis shell with the earth.
Compared with prior art, lightning arrester discharge register of the present utility model and leakage current table tester, integrate one by the check milliammeter of arrester discharge counter and discharge time test, increase work efficiency; Whole apparatus structure is compact, and outward appearance is small and exquisite, is convenient for carrying.Greatly can save manpower, improve lightning stroke counter testing precision, thus find accident potential in advance, avoid lightning arrester to have an accident, for testing crew provides basis for estimation targetedly.The utility model is by the reading to arrester discharge counter reading, in conjunction with the known number of times to arrester discharge counter high-voltage electric shock, arrester discharge counter whether normal operation can be detected, by the monitoring to leakage current table, lightning arrester can be obtained and leak total current numerical value, the degree of aging of lightning arrester can be monitored.
Instrument of the present utility model has following characteristics:
1, built-in 12V/500mAH chargeable lithium cell, cruising time can reach 2-3 days;
2, cell voltage is divided into two-way, supplies Inverter and auxiliary power module respectively;
3, inverter exports 220V/50Hz sine voltage, and high pressure, after rectifying and wave-filtering, is stored in internal capacitor two ends by a road, tests electric discharge counting by Control output voltage; Another road input pressure regulator, selects current limliting to produce counter leakage current through output resistance;
4, leakage current converts through channel signal, is converted to the direct current signal of real effective, after A/D conversion, is read and show by master controller;
5,32 high-performance arm processors selected by master controller, management display, button, USB interface, A/D conversion and other control circuits.
Accompanying drawing explanation
Fig. 1 is anatomical connectivity schematic diagram of the present utility model;
Fig. 2 is instrumental function area layout of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is elaborated.
Lightning arrester discharge register of the present utility model and leakage current table tester, wherein: comprise dc-battery, dc-battery connects inverter and accessory power supply respectively, accessory power supply connects master controller, inverter accesses the discharge counter testing circuit and leakage current table checking circuit that are arranged in parallel, DC conversion is alternating current by inverter, discharge counter testing circuit comprises the rectifier filer and effluve controller that connect successively, rectifier filer by whole for alternating current be direct current, effluve controller discharges to discharge counter, observe discharge counter whether action, leakage current table checking circuit comprises the pressure regulator, adjustable resistance and the leakage current table that connect successively, the leakage current produced through leakage current table checking circuit to be converted to the direct current signal of real effective through alterating and direct current pressure converter, this direct current signal carries out, after A/D conversion, being read and show by master controller through A/D module.
In embodiment, inverter exports 220V/50Hz sine voltage.
In embodiment, in discharge counter testing circuit, high voltage direct current, after rectifying and wave-filtering, is stored in discharge counter testing circuit internal capacitor two ends by alternating current, then controls output voltage test electric discharge counting by effluve controller.
In embodiment, effluve controller is relay.
In embodiment, master controller connection control button, display and access interface.
In embodiment, dc-battery is connected with charge controller, and when external power source charges to dc-battery, charge controller controls charging process.
In embodiment, master controller is connected with pressure regulator and adjustable resistance, and master controller, by regulating voltage and the resistance of leakage current table checking circuit, controls the size of leakage current table checking circuit output current.
In embodiment, lightning arrester discharge register and leakage current table tester comprise metal chassis shell, can be connected by the panel ground stud of metal chassis shell with the earth.
During owing to testing arrester discharge counter at the scene, there is not free interval in uncertainty and process of the test in the duration of charging, makes capacitor charging insufficient, counter akinesia.Capital construction site operation power supply instability is also that produce can not a reason of action failure.
On-the-spot panel tests personnel, by after detecting a large amount of counters, obtain some master datas, and obtaining that arrester discharge counter occurs can not the fault of correct operation, group member adds up failure condition, test total degree 30 times, break down number of times 6 times, failure rate 20%.
As can be seen here, although carry out narrow examination to each arrester discharge counter, due to the limitation of inspection method, failure rate is still relatively relatively high.Therefore, need to transform the action test that just can accurately carry out counter to test method and testing equipment, want comprehensively to detect, the test method of relative efficiency just must be taked just can accurately to find out fault that counter may exist also is keeped in repair, guarantee arrester discharge counter safety, stable operation.
By analyzing arrester discharge counter system principle, researchist unanimously thinks and wants to carry out correct detection reliably to arrester discharge counter system, must develop a set of suitable pick-up unit and detect arrester discharge counter.
Pick-up unit fundamental novel features of the present utility model:
1. the check milliammeter of arrester discharge counter and discharge time test are integrated one, increase work efficiency;
2. compact conformation, outward appearance is small and exquisite, is convenient for carrying;
3. built-in high-capacity lithium battery, without the need to field power supply;
4. big screen LCD and a key fly shuttle mouse action, and full Chinese interface is intuitively easy to use;
5. discharge time sets arbitrarily.
6. verify the unification of lightning arrester Leakage Current table source, according to the range stepping of table meter, and can range be selected, the needs of different test product and site test can be adapted to;
7. short form test wiring, reduces testing crew labour intensity, improves the accuracy of test connection, ensured the safe and reliable of process of the test.
8. metal chassis shell, after panel ground stud is connected with the earth, safe and reliable, protection operator safety;
We carry out optimum scheme choice after carrying out principle analysis to arrester discharge counter and leakage current table detection system device scheme.
Arrester discharge counter power supply is selected
For the power supply of pick-up unit, this group proposes three kinds of project plan comparison from aspects such as economy, detecting reliability, conveniences, and analyzes scheme.
Relatively two kinds of methods:
The first scheme: megohmmeter is to capacitor charging method: charge to the capacitor that an electric capacity is 5-10 microfarads with the megohmmeter of 1000V or 2500V, then electricity container is discharged by discharge counter, and counter should action.Arrester discharge counter is checked, and tests various discharge counter whether regular event.
2, first scheme: AC power is by obtaining DC high-voltage power supply after times repoussage, stream filtering, and to the charging of 5uF high pressure iron-clad capacitor, the time, probably at about 1 minute, then to discharge counter electric discharge, makes counter action.
3, the third scheme: select jumbo lithium-ions battery to be Power supply, DC high-voltage power supply is realized by electronic pressure regulating mode, after rectifying and wave-filtering, high pressure is stored in internal capacitor two ends, by Control output voltage to the electric discharge of electric discharge counting, counter action.
Three kinds of project plan comparison:
First and second kind of scheme is after operation insulating megger and silicon stack voltage multiplying rectifier are to high-voltage capacitor charging, high-tension electricity holds full DC high-voltage, because taking in process of the test uses connecting line to connect between testing equipment, easy generation mis-wired situation, wiring is complicated easily produces harm to testing equipment and testing crew.In addition, in process of the test, supply voltage and DC high-voltage power supply are measured and are used single voltage table measurement amount, wiring is complicated, and precision is low, the most important thing is that high-voltage capacitance is full of electricity relevant with duration of charging length, duration of charging length cannot accurately control under such test condition, cause the output DC current of uncontrollable percussion, the size of current of each percussion is different, the uncertainty that the action sometimes of guiding discharge counter is failure to actuate sometimes.
The jumbo lithium-ions battery of the third Scheme Choice is Power supply, DC high-voltage power supply is realized by electronic pressure regulating mode, electric current, voltage can be controlled accurately like this, the high-voltage capacitor charging time regulates arbitrarily, discharge current can regulate, in test loop, current/voltage value is monitored in real time, carries out discharge test in such a situa-tion to discharge counter, the discharge counter correct operation that can be accurately.
Therefore select the third scheme.
2, lightning arrester Leakage Current table detection scheme is selected:
The first scheme: use AC voltage regulator boosting, external reactance transformer, reactance variable element is as follows: the input of 220V/200mA peace, 50V/100mA export, then obtain DC current by rectifying and wave-filtering, be serially connected in test loop by the reometer verified, the precision of verification reometer.
First scheme: inverter exports 220V/50Hz sine voltage, use the adjustable constant current source of 0 ~ 100mA of electronic pressure regulating mode, port voltage can in 0 ~ 50V regulating and controlling.Current limliting is selected to produce counter leakage current through output resistance; Leakage current converts through channel signal, is converted to the direct current signal of real effective, after A/D conversion, is read and show by master controller;
32 high-performance arm processors selected by master controller, management display, button, USB interface, A/D conversion and other control circuits.
Two schemes compares:
The first scheme: test method is traditional analog quantity current/voltage transform mode, wiring is complicated, and accuracy of measurement is short of, low precision, cannot the verifying work of complete correct leakage current of an arrester table in pairs, causes causing erroneous judgement to lightning arrester body.
First scheme: through the redesign to circuit and software and hardware, upgrade to digital quantity to the verification of arrester discharge counter Leakage Current by analog quantity test to test, measurement data has original analog current voltage table to change into digital current voltage table, measure more accurate to lightning arrester Leakage Current table, improve the accuracy of monitoring lightning arrester body Leakage Current, operating lightning arrester aging deterioration degree can be monitored further, the operating high-tension apparatus defect of Timeliness coverage, runs for power system stability and makes certain contribution.
Therefore selection first scheme.
Method of operating of the present utility model: be connected instrument output terminal with counter of lightning arrester two ends (tie line is as far as possible short), and red end connects end, black end earth terminal.After being connected by power lead, whether inspection apparatus and wiring correct, confirm errorless after can start test.Power turn-on switch (power lights is bright), after voltage stabilization (about 600V), can start verification.Press veritification key, output voltage declines immediately, now the action situation of observable counter.As needed test of many times, can voltage to be output when reaching stationary value, then press check key, and observe the action situation of counter.After being verified, turn off power supply immediately, during the complete back to zero of voltage to be output, could wiring be removed.Not declining as pressed inspection key, output voltage, should power supply be turned off, after voltage instruction back to zero, check whether that there is breakpoint in loop, or discharge counter is not suitable for the model that specifies in technical indicator.
Points for attention:
When removing wiring, if output voltage does not have back to zero, operating personnel can not touch p-wire non-insulated portion, in order to avoid cause personal injury.
Test specimen does not allow charged.
Instrumental function region of the present utility model is arranged: as shown in Figure 2, device panel comprises following a few part:
Discharge test:
Comprise red, black two lead-out terminals, centre is output indicator, under discharge test pattern, is exported by the voltage being stored in internal capacitance two ends, discharge counter is counted by this terminal.
Leakage current:
Comprise red, black two lead-out terminals, centre is output indicator, under leakage current table correction mode, exports adjustable alternating current by this terminal.
Ground connection:
The earth terminal of instrument, is connected with panel and shell, ensures handling safety.
Power supply inputs:
External 220V electric main, charging indicator light is bright, charges to inner lithium battery.
Power switch:
The electric power starting of control instrument and closedown.
Display screen:
Full menu in Chinese display, the feature operations such as various setting, model selection.
Mouse:
One key shuttle type keystroke pattern, left-handed, dextrorotation and middle OK button three kinds of modes of operation.
The utility model is relative to the comparison of test results of prior art
Sample ID: monitoring device for lightning arrester; Model: JCQ3-Y1 type; Numbering: 0312045
Indicating value 0.1mA 0.2 mA 0.3 mA 0.4 mA 0.5 mA 0.6 mA 0.7 mA 0.8 mA 0.9 mA 1.0 mA
Former test method measuring value 0.105 0.21 0.32 0.43 0.54 0.66 0.77 0.88 0.99 1.11
Error 5% 5% 6.7% 7.5% 8% 10% 10% 10% 10% 11%
Test method measuring value after improving 0.101 0.201 0.301 0.401 0.502 0.602 0.702 0.803 0.903 1.004
Error 1% 0.5% 0.3% 0.25% 0.4% 0.3% 0.29% 0.38% 0.33% 0.4%
Sample ID: monitoring device for lightning arrester; Model: JCQ3-Y1 type; Numbering: 0312045
Movement counting 01 02 03 04 05 06 07 08 09 00
Former test method action situation Action Be failure to actuate Action Be failure to actuate Action Action Action Action Action Action
Reliability judges Correctly Fault Correctly Fault Correctly Correctly Correctly Correctly Correctly Correctly
Modified test method action situation Correctly Correctly Correctly Correctly Incorrect Correctly Correctly Correctly Correctly Correctly
Reliability judges Correctly Correctly Correctly Correctly Mistake Correctly Correctly Correctly Correctly Correctly
Experiment display, result of the present utility model reaches designing requirement.
The instrument of research and development improves the precision of Leakage Current table measurement, and we use the experience got, for next step electrical equipment field test is served by continuing.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.

Claims (8)

1. lightning arrester discharge register and leakage current table tester, it is characterized in that: comprise dc-battery, described dc-battery connects inverter and accessory power supply respectively, described accessory power supply connects master controller, described inverter accesses the discharge counter testing circuit and leakage current table checking circuit that are arranged in parallel, DC conversion is alternating current by described inverter, described discharge counter testing circuit comprises the rectifier filer and effluve controller that connect successively, described rectifier filer by whole for alternating current be direct current, described effluve controller discharges to discharge counter, observe discharge counter whether action, described leakage current table checking circuit comprises the pressure regulator, adjustable resistance and the leakage current table that connect successively, the leakage current produced through leakage current table checking circuit to be converted to the direct current signal of real effective through alterating and direct current pressure converter, this direct current signal carries out, after A/D conversion, being read and show by master controller through A/D module.
2. lightning arrester discharge register according to claim 1 and leakage current table tester, is characterized in that: described inverter exports 220V/50Hz sine voltage.
3. lightning arrester discharge register according to claim 2 and leakage current table tester, it is characterized in that: in discharge counter testing circuit, alternating current is after rectifying and wave-filtering, high voltage direct current is stored in discharge counter testing circuit internal capacitor two ends, then controls output voltage test electric discharge counting by effluve controller.
4. lightning arrester discharge register according to claim 3 and leakage current table tester, is characterized in that: described effluve controller is relay.
5. lightning arrester discharge register according to claim 1 and leakage current table tester, is characterized in that: described master controller connection control button, display and access interface.
6. lightning arrester discharge register according to claim 1 and leakage current table tester, is characterized in that: described dc-battery is connected with charge controller, and when external power source charges to dc-battery, described charge controller controls charging process.
7. lightning arrester discharge register according to claim 1 and leakage current table tester, it is characterized in that: described master controller is connected with pressure regulator and adjustable resistance, master controller, by regulating voltage and the resistance of leakage current table checking circuit, controls the size of leakage current table checking circuit output current.
8. lightning arrester discharge register according to claim 1 and leakage current table tester, is characterized in that: lightning arrester discharge register and leakage current table tester comprise metal chassis shell, can be connected by the panel ground stud of metal chassis shell with the earth.
CN201520930861.XU 2015-11-22 2015-11-22 Arrester discharge counter and leakage current table check gauge Expired - Fee Related CN205139349U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520930861.XU CN205139349U (en) 2015-11-22 2015-11-22 Arrester discharge counter and leakage current table check gauge

Publications (1)

Publication Number Publication Date
CN205139349U true CN205139349U (en) 2016-04-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106125030A (en) * 2016-06-27 2016-11-16 国网甘肃省电力公司白银供电公司 The multifunctional check of Portable arrester on-Line Monitor Device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106125030A (en) * 2016-06-27 2016-11-16 国网甘肃省电力公司白银供电公司 The multifunctional check of Portable arrester on-Line Monitor Device

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

Granted publication date: 20160406

Termination date: 20161122