CN101344552B - Grid system integrated protector tester - Google Patents
Grid system integrated protector tester Download PDFInfo
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- CN101344552B CN101344552B CN2008100218538A CN200810021853A CN101344552B CN 101344552 B CN101344552 B CN 101344552B CN 2008100218538 A CN2008100218538 A CN 2008100218538A CN 200810021853 A CN200810021853 A CN 200810021853A CN 101344552 B CN101344552 B CN 101344552B
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Abstract
A high-voltage grid comprehensive protector tester is characterized in that a circuit structure of the tester comprises a power supply circuit, a voltage analog circuit and a current analog circuit to generate in a simulative manner work voltage and work current of the high-voltage grid encountering with overload, short, overvoltage and under voltage and to generate in a simulative manner zero sequence voltage and zero sequence current for a GZBD leakage failure simulation; the circuit structure also comprises a timing stopwatch used for recording the failure action time of the comprehensive protector, a test function selection switch used for selecting a function from various failure test functions, a GZBD, DZBD test selection switch, an output relay used for generating in a simulative manner a ground leakage potentiometer W4 of ground leakage impedance. The invention can totally simulate high-voltage vacuum power distribution devices, low-voltage feeding switches and power supply circuits and second-time wiring of protecting boxes to lead the comprehensive protector to test and check all the parameters and capabilities even without a main unit.
Description
Technical field
The present invention relates to testing tool, the debugging of the intelligent grid system integrated protector of a kind of GZBD of being suitable for and DZBD series of more specifically saying so, the instrument that detects and safeguard.
Background technology
The intelligent grid system integrated protector of GZBD and DZBD series is to be used under the coal mine mobile substation at the element circuit that underground power supply used process is controlled and protected; wherein GZBD is the high-pressure side Electric net protector of mobile substation; DZBD is the low-pressure side Electric net protector, and both are installed in the inner explosion-proof iron-clad of high and low pressure side of mobile substation.GZBD and DZBD are to be the control core with the single-chip microcomputer; circuit such as external signal sampling and treatment circuit, man-machine interface circuit, relay output circuit and remote communication interface; GZBD carries out dynamic monitoring and demonstration to line voltage distribution, electric current, deciliter state of high voltage distribution installation; the fault that various faults such as overload, short circuit, the phase failure, electric leakage, insulation and the overvoltage/undervoltage that system is occurred and DZBD low-pressure side feedback are come monitors, realizes high voltage protective by the electrical apparatus release action that drives on the isolating switch.
Protector, maintenance under changing coal mine in the mobile substation or when using new mobile substation all will be tested protector, thereby causes the accident generation in order to avoid do not have defencive function when using in the down-hole.At present, mainly be on the mobile substation, to carry out some simple function tests for the test of grid system integrated protector, divide function etc. as electric leakage, electricity.Existing problem mainly comprises:
1, protector must be installed in the mobile substation in the test process, this form makes test job very inconvenient;
2, test function is not comprehensive, can not satisfy test request.
Summary of the invention
The present invention is the technical matters for avoiding above-mentioned prior art to deposit; the grid system integrated protector tester of the intelligent high-voltage fence of a kind of GZBD of being particularly suited for and DZBD series is provided; supply line and secondary wiring with tester comprehensive simulated high-voltage vacuum distribution equipment and low-voltage feeder switch and guard box; make comprehensive protection device carry out the test and the verification of all parameters and performance by Offhost, for the factory inspection of comprehensive protection device manufacturer and users' site examining and repairing provide safeguard.
Technical solution problem of the present invention adopts following technical scheme:
The design feature of grid system integrated protector tester of the present invention is to have in its circuit structure:
One power circuit of being made up of transformer TB1, commutated current, filtering circuit and three terminal regulator provides working power for tester itself;
One voltage analog circuit and current analog circuit, simulation produces operating voltage and the working current of high-voltage fence under overload, short circuit, superpotential, under-voltage; Simulation produces residual voltage and zero-sequence current carries out the leak current fault simulation of GZBD high-pressure side Electric net protector;
The fault actions time of one Chronograph record comprehensive protection device;
One is used for the test function selector switch selected in various fault test functions, and its selected test function comprises overload, short circuit, superpotential, under-voltage and electric leakage;
One is used for selecting between GZBD high-pressure side Electric net protector and DZBD low-pressure side Electric net protector the GZBD, the DZBD that test to test selector switch;
One output relay is that H does corresponding control with the separating brake relay J after the delay time of GZBD and DZBD all types fault;
One leaks earth potential device W4 is used for simulation impedance with producing leakage, detects the size of leaking the ground impedance in the leakage tests; And carry out the earth leakage search/lockout fault simulation of DZBD with described potentiometer W4 simulation leak resistance.
Design feature of the present invention also is:
Described voltage analog circuit is made up of pressure regulator TY1, control contact J3-3, J3-4, J4-1, J4-2 and transformer TB2; Described current analog circuit is made up of pressure regulator TY2, control contact J5-1, J5-2, transformer TB3 and TB4.
GZBD misoperation warning circuit is set, and is at the output terminal ZB10 of GZBD the buzzer alarm circuit of being made up of normally opened contact JB1-1, normally closed contact JB2-1 and hummer to be set.
Between described each test function selector switch, mechanical interlock is set.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, tester of the present invention is the instrument that works alone; can realize comprehensive protection device is carried out the test and the verification of all parameters and the performance of Offhost; convenient, fast, function setting is comprehensive, for the factory inspection of comprehensive protection device manufacturer and users' site examining and repairing provide safeguard.
2, tester volume of the present invention is little, and the current supply circuit and the sample circuit of the various switches of energy real simulation are arranged by the pin order of other protector by the pin of interface circuit, can expand to the testing tool to other protector.
3, the button of each test function selector switch of the present invention is set to each other mechanical interlocked, effectively prevents from the test process to damage because of being short-circuited test instrumentation.
4, comprehensive relay interlocking of the present invention and Synchronization Design have ensured the consistance of measurement result, have reduced the possibility of maloperation simultaneously.
5, the integrated electrical secondmeter of the present invention has been realized the synchro measure of fast tripping protection time.
6, the present invention can effectively guarantee personal safety and avoid the damage to protection device by the wrong way alarm function is set.
Description of drawings
Fig. 1 is a circuit composition frame chart of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
Below by embodiment, the invention will be further described in conjunction with the accompanying drawings.
Embodiment
Referring to Fig. 1, Fig. 2, power circuit is made up of transformer TB1, rectifier bridge QL1, filter capacitor C1 ~ C5 and three terminal regulator 7812,7805.Industrial-frequency alternating current AC220V is through the former limit of K switch 0 to transformer TB1, export by after the QL1 rectification from the 18V secondary of TB1, through capacitor C 1, C2 filtering, deliver to 7812 input end, No. 2 pins 7812 are the D.C. regulated power supply of output+12V just, simultaneously this+as 7805 input voltage, No. 2 pins from 7805 are the D.C. regulated power supply of output+5V just again for the power supply of 12V.
Overload, short circuit are meant that the working current of high-voltage fence has surpassed certain threshold value, superpotential is meant that operating voltage is higher than certain threshold value, under-voltage is meant that operating voltage is lower than certain threshold value, therefore, operating voltage and working current that voltage analog circuit and current analog breadboardin produce high-voltage fence are set, promptly realize the fault simulation of overload, short circuit, superpotential, under-voltage.In concrete the enforcement,, be to come analogue zero sequence voltage and zero-sequence current respectively, thereby realize the leak current fault simulation of GZBD with voltage analog circuit and current analog circuit for the leakage tests of GZBD comprehensive protection device; For the earth leakage search/lockout test of DZBD comprehensive protection device, simulate leak resistance by a potentiometer and realize its earth leakage search/lockout fault simulation.
As shown in Figure 2, the voltage analog circuit is made up of pressure regulator TY1, control contact J3-3, J3-4, J4-1, J4-2 and transformer TB2; The current analog circuit is made up of pressure regulator TY2, control contact J5-1, J5-2, transformer TB3 and TB4.Can obtain very accurate continually varying aanalogvoltage or electric current by regulating TY1 or TY2, voltage table is used to show the operating voltage or the current value of current simulated high-pressure electrical network, in fact, the current analog circuit is to be provided with the proportionate relationship of voltage analog circuit according to electric current and voltage.
Chronograph TS shown in Figure 2 is used to write down the fault actions time of comprehensive protection device.TS also has two control end R and S except the power supply and ground terminal of+5V, wherein the R end is used to the TS that resets, and it is picked up counting from 0, and the R end is subjected to the control of reset switch K15, and when K15 pressed, R termination+5V voltage made it be reset to 0; S end is used to start timing, and during S termination+5V voltage, stopwatch TS picks up counting, and when the S end disconnected, stopwatch stopped timing.The S end is subjected to the control of contact J7-3, J10-3, J2-3, J4-3, JH-3 and switch HK6 '.Wherein, JH-3 is the contact of separating brake relay J H, after the fault delay time arrives, and the JH closure, normally closed contact JH-3 disconnects like this, makes stopwatch TS stop timing.
Normally opened contact J7-3 control overload, short circuit and the timing of GZBD leak current fault begin, control overload timing course is: during overload measurement, overload measurement selector switch HK1 ' is closed, simultaneously current switch K3 is disconnected, the network operation current value is adjusted in the overload level, stopwatch TS resets, Closing Switch K3, this moment relay J 7 closures, normally opened contact J7-3 closure, so TS picks up counting, after the fault delay time arrives, separating brake relay J H closure, normally closed contact JH-3 disconnects, TS stops timing, thereby TS has noted the actuation time of overload.Control short circuit timing course is: during short-circuit test, short-circuit test selector switch HK2 closure disconnects current switch K3 simultaneously, the network operation current value is adjusted in the short-circuiting range stopwatch TS that resets, Closing Switch K3, this moment relay J 7 closures, normally opened contact J7-3 closure, thus TS pick up counting, after the fault delay time arrives, separating brake relay J H closure, normally closed contact JH-3 disconnects, and TS stops timing, thereby TS has noted the actuation time of short circuit.Control GZBD electric leakage timing course is: during the GZBD leakage tests, leakage tests selector switch HK4 ' closure disconnects current switch K3 simultaneously, zero-sequence current is adjusted in the electric leakage scope stopwatch TS that resets, Closing Switch K3, this moment relay J 7 closures, normally opened contact J7-3 closure, thus TS pick up counting, after the fault delay time arrives, separating brake relay J H closure, normally closed contact JH-3 disconnects, and TS stops timing, thereby TS has noted the actuation time of GZBD electric leakage.
The timing of normally opened contact J10-3 control DZBD earth leakage search/lockout fault begins, control procedure is: during the earth leakage search/lockout test, resistance switch K4 is disconnected, potentiometer W4 is adjusted in the earth leakage search/lockout resistance range, the stopwatch TS that resets, Closing Switch K4, this moment relay J 10 closures, normally opened contact J10-3 closure is so TS picks up counting.
Normally opened contact J4-3 and the timing of switch HK6 ' control DZBD leak current fault begin, control procedure is: during the DZBD leakage tests, leakage tests selector switch HK6 ' closure, simultaneously voltage switch K2 is disconnected, potentiometer W4 is adjusted in the leak resistance scope, stopwatch TS resets, Closing Switch K2, this moment relay J 4 closures, normally opened contact J4-3 closure, so TS picks up counting, after the fault delay time arrives, separating brake relay J H closure, normally closed contact JH-3 disconnects, TS stops timing, thereby TS has noted the actuation time of DZBD electric leakage.
The timing of normally opened contact J2-3 control overvoltage/undervoltage fault begins, control procedure is: during the overvoltage/undervoltage test, overvoltage/undervoltage test selector switch HK5 ' closure, simultaneously voltage switch K2 is disconnected, the network operation magnitude of voltage is adjusted in overvoltage or the under-voltage scope, stopwatch TS resets, Closing Switch K2, this moment relay J 2 closures, normally opened contact J2-3 closure, so TS picks up counting, after the fault delay time arrives, separating brake relay J H closure, normally closed contact JH-3 disconnects, TS stops timing, thereby TS has noted overvoltage or under-voltage actuation time.
The test function selector switch is selected in being included in the various fault test functions of overload, short circuit, superpotential, under-voltage and electric leakage;
The realization of overload, short-circuit test function:
At first, by high-voltage fence operating voltage working properly of voltage analog breadboardin, to guarantee that operating voltage does not have the overvoltage/undervoltage fault when testing these two functions; Then, the working current of a high-voltage fence of current analog breadboardin, by the size that changes this analog current realize transshipping, the test function of short circuit.Concrete combined circuit Fig. 2; the operating voltage of pressure regulator TY1 simulation electrical network; adjusting pressure regulator TY1 makes voltage table V1 show that 100V gets final product; the working current of pressure regulator TY2 simulation electrical network; earlier pressure regulator is adjusted at the position that makes voltage table V3 show 0.5V; at this moment tested comprehensive protection device should show load current value; pass through the size of the position change working current of adjustment TY2 then; meanwhile; tested comprehensive protection device shows corresponding working current value; adjust this value to transshipping setting valve or short circuit setting valve, on tested comprehensive protection device display screen, see overload fault or short circuit tripping operation whether occurs, so just can realize transshipping test function with short circuit.
Superpotential, under-voltage function realize: at first, the working current simulation of high-voltage fence is being transshipped below the setting valve the no working current situation of general selection by the current analog circuit; By the operating voltage of voltage analog breadboardin electrical network, realize the test function of superpotential, under-voltage by the size that changes this aanalogvoltage then.Concrete combined circuit Fig. 2; regulate pressure regulator TY2 earlier; make it be output as 0V; and then adjusting pressure regulator TY1; make voltage table V1 show that 100V (sees Table V 1 during test GZBD; at this moment the GZBD comprehensive protection device should show load voltage value); perhaps make voltage table V2 show that 10V (sees Table V 2 during test DZBD; at this moment the DZBD comprehensive protection device should show load voltage value); finely tune TY1 then; the operating voltage that makes the comprehensive protection device demonstration is near the point of superpotential or under-voltage; observe lighting and extinguishing of fault delayed startup lamp on the comprehensive protection device; see on the display screen of comprehensive protection device superpotential or under-voltage fault whether occur simultaneously, so just realized superpotential; the test function of under-voltage.
The realization of leakage tests function:
(1) leakage tests of GZBD comprehensive protection device
The leakage tests of GZBD is that the size by analogue zero sequence voltage or zero-sequence current realizes, be specially: when carrying out leakage tests with the analogue zero sequence voltage (at this moment, the zero-sequence current leakage function of GZBD should be closed), the selector switch of will leaking electricity HK4 closure, voltage switch K2 is also closed simultaneously, relay J 4 and J5 are all, normally opened contact J4-1 and J4-2 closure, the output of pressure regulator TY1 is through J3-3, the normally closed contact of J3-4 arrives transformer TB2, the output of TB2 be input to the ZB15 of GZBD, and ZB15 is the input terminal of residual voltage through the normally closed contact of J1-3, so, just can realize the test of residual voltage leakage function by regulating TY1.When carrying out leakage tests with the simulation zero-sequence current (at this moment, the residual voltage leakage function of GZBD should be closed), the selector switch of will leaking electricity HK4 closure (HK4 ' also closed), current switch K3 is also closed simultaneously, relay J 5 and J7 are all, normally opened contact J7-1, J7-2 closure, the normally opened contact closure of J5-1, J5-2, at this moment, pressure regulator TY2 has input, its output simultaneously arrives the zero-sequence current input end ZB5 of GZBD through K6, H0 and K7, so by regulating TY2, just can realize the test of zero-sequence current leakage function.
(2) leakage tests of DZBD comprehensive protection device
The leakage tests of DZBD has leakage tripping and the closed two kinds of situations of electric leakage; the method that these two kinds of test functions realize is the same; be specially: at first; with earth leakage search/lockout functional select switch HK6 closure, resistance switch K4 is also closed simultaneously, relay J 10; the normally opened contact closure of J10-2; potentiometer W4 so pass through to regulate W4, just can realize the test of DZBD creepage protection function by the leakage ground impedance input end ZB5 that HK6 is input to DZBD.
What GZBD, DZBD test selector switch K1 was used to select to test is GZBD comprehensive protection device or DZBD comprehensive protection device.As shown in Figure 2, when K1 disconnects, relay J 1 dead electricity, normally closed contact through J1-1 and J1-2, with the 100V power supply that the AC220V power supply of importing is transformed into through transformer TB1, deliver to the ZB8 and the ZB18 end of GZBD comprehensive protection device by the normally closed contact of J2-1 and J2-2, thereby GZBD comprehensive protection device working power is provided, and the DZBD comprehensive protection device can not get working power, so test is the GZBD comprehensive protection device; In like manner, when K1 is closed, relay J 1; the normally opened contact closure of J1-1 and J2-2, normally closed contact disconnects, and the power supply of 100V is sent to the ZB8 and the ZB18 end of DZBD comprehensive protection device; provide DZBD comprehensive protection device working power, thereby test is the DZBD comprehensive protection device.
Output relay is that H does corresponding control with the separating brake relay J after the delay time of GZBD and DZBD all types fault; As shown in Figure 2, during test GZBD comprehensive protection device, when tested fault delay time in the past after, by its ZB20 end control separating brake relay J H action; During test DZBD comprehensive protection device, when tested fault delay time in the past after, by its ZB11 end control JH action.
When carrying out the leakage tests of DZBD comprehensive protection device, when using potentiometer W4 to come analog D ZBD leakage tripping and the leakage ground impedance during earth leakage search/lockout.As shown in Figure 2, when the earth leakage search/lockout functional test of carrying out DZBD, earth leakage search/lockout functional select switch HK6 is closed, and resistance switch K4 also needs closure simultaneously, at this moment relay J 10 gets the normally opened contact closure of electric J10-2, and W4 is connected to the leakage ground impedance input end ZB5 of DZBD.
In addition, in order to prevent to damage test instrumentation because of being short-circuited in the test process, between described each test function selector switch, mechanical interlock is set.
In order to improve the reliability of measuring accuracy and test structure, can be set to totally digitilized instrument in concrete the enforcement.
In concrete the enforcement, can with test function options button layouts such as overload, short circuit, the phase failure, electric leakage, insulation and overvoltage/undervoltage in the upper right corner one row, and be mechanical interlocked each other, avoid two keys to press simultaneously, to prevent in the test process damaging test instrumentation because of being short-circuited; Other button that is of little use is placed on the lower left corner, indicates keypress function and operation indicating around every button, the button rational deployment can make the user more convenient to operate, avoids occurring damaging owing to misoperation the phenomenon of instrument.
Functional test procedures is exemplified below:
1, overload performance and parameter testing (GZBD and DZBD are identical)
The first step: press functional select switch HK1 to transshipping the position, press current start K switch 3, adjust analog current (pressure regulator TY2) to 0.5V (the voltage table range is in the 2V position), tester will show load current value, can proofread and correct by adjusting tester built-in potential device;
Second step: conversion phase-change switch K5 carries out the balance detection and the adjustment of ABC three-phase, the timing that needn't show interest in electrical secondmeter this moment;
The 3rd step: the inner rated current wire jumper of conversion testing instrument, detect the demonstration of different ratings;
The 4th step: the overload current multiple of adjusting, given corresponding conversion magnitude of voltage (multiple of adjusting * 0.5V), rise to 1.1 times set-point again, the accuracy of the reading of observation test instrument reometer;
The 5th step: take a sample test according to the over-load inverse time-lag characteristic, given corresponding conversion magnitude of voltage (overload magnification * multiple of adjusting * 0.5V), close current starting switch K3, reset test instrument and electrical secondmeter, again the firing current K switch 3, and the electrical secondmeter time is read in the tester action.
2, short-circuit capability and parameter testing (GZBD and DZBD are identical)
The first step: press functional select switch HK2 to location of short circuit, the short-circuit current multiple of adjusting, (multiple of adjusting * 0.5V), can close the overload function simultaneously is to prevent overload and open-phase protection action in the given electric current process to be scaled magnitude of voltage;
Second step: press current start K switch 3, adjust analog current (pressure regulator TY2) to the protector action, the voltage table of this moment should be setting valve;
The 3rd step: the conversion phase-change switch carries out the balance detection of ABC three-phase, the timing that needn't show interest in electrical secondmeter this moment;
The 4th step: the short-circuit current multiple of adjusting, given corresponding setting valve (1.2 times of voltages of the multiple of adjusting * 0.5V), close current starting switch K3, reset test instrument and electrical secondmeter, the firing current K switch 3 again, the tester action, read the electrical secondmeter time, should be less than 100ms.
3, GZBD electric leakage performance and parameter detecting
The first step: the punching that connects the rear panel zero sequence current mutual inductor is gathered line, notices that the L end should insert rear panel banana plug end with zero sequence current mutual inductor k1/k2 terminal line in the load-side of zero sequence current mutual inductor;
Second step: press functional select switch HK1 to the position of leaking electricity, adjust tester zero-sequence current value to off-position, and residual voltage value to the desire of adjusting is tested gear, and the electric leakage of adjusting is delayed time to the 0.1s position, the measuring voltage table prepares to carry out the measurement of residual voltage value to the 20V shelves;
The 3rd step: the cut-in voltage starting switch, adjust aanalogvoltage (pressure regulator TY1) to tester action, comparison value and setting valve;
The 4th step: electric leakage delay time to the desire of adjusting is tested gear, and given aanalogvoltage is slightly larger than setting valve, closes the voltage starting switch, reset test instrument and electrical secondmeter, cut-in voltage switch again, tester action, read the electrical secondmeter time, relatively with the delayed setting error;
The 5th step: close the voltage starting switch, the tester zero-sequence current value of adjusting is tested gear to desire, and the residual voltage value of adjusting is to off-position, and the electric leakage of adjusting is delayed time to the 0.1s position, measurement reometer range places to be adjusted to matched position, prepares to carry out the measurement of zero-sequence current value;
The 6th step: the firing current starting switch, adjust analog current (pressure regulator TY2) to tester action, comparison value (reometer reading * 2 * range) and setting valve;
The 7th step: electric leakage delay time to the desire of adjusting is tested gear, and given analog current is slightly larger than setting valve, the close current starting switch, reset test instrument and electrical secondmeter, firing current switch again, tester action, read the electrical secondmeter time, compare error with the delayed setting value;
The 8th step: the test of power direction type leakage function: reversing switch K7 places "+" position, the residual voltage current calibration is not all in off-position, the electric leakage delayed setting is at the 0.1s gear, given aanalogvoltage electric current is greater than setting valve simultaneously, the action of observation test instrument, close current or voltage starting switch place "-" position with reversing switch, again firing current voltage switch, tester is answered akinesia.
4, GZBD overvoltage/undervoltage performance and parameter testing
The first step: press functional select switch HK5 to the overvoltage/undervoltage position, regulation voltage (pressure regulator TY1) is to 100V, this moment should be from line voltmeter V1 reading, cut-in voltage starting switch K2, this moment, the demonstration of tester voltage table should be ratings (6KV/10KV), and W5 proofreaies and correct by tester built-in potential device;
Second step: regulation voltage TY1 is to 125% and 70% of supply voltage, fine setting aanalogvoltage TY1, and the lighting and extinguish of observation test instrument fault delayed startup lamp, the magnitude of voltage of this moment is overpressure value or under-voltage value;
The 3rd step: the fine setting aanalogvoltage is closed the voltage starting switch to tester fault delayed startup lamp Chang Liang, reset test instrument and electrical secondmeter, and cut-in voltage starting switch again, the electrical secondmeter time is read in the tester action, should be smaller or equal to 20s;
5, DZBD overvoltage/undervoltage performance and parameter testing
The first step: press functional select switch HK5 to the overvoltage/undervoltage position, cut-in voltage starting switch K2, regulation voltage (pressure regulator TY1) is to 10V, and this moment, the demonstration of tester voltage table should be ratings (1140V/3300V), and W3 proofreaies and correct by tester built-in potential device;
Second step: regulation voltage TY1 is to 125% and 70% of supply voltage, fine setting aanalogvoltage TY1, and the lighting and extinguish of observation test instrument fault delayed startup lamp, the magnitude of voltage of this moment is overpressure value or under-voltage value;
The 3rd step: the fine setting aanalogvoltage is closed the voltage starting switch to tester fault delayed startup lamp Chang Liang, reset test instrument and electrical secondmeter, and cut-in voltage starting switch again, the electrical secondmeter time is read in the tester action, should be smaller or equal to 20s;
6, DZBD electric leakage and earth leakage search/lockout performance and parameter testing
The first step: press functional select switch HK6 to the earth leakage search/lockout position, cut-in voltage starting switch K2, regulation voltage (TY1) is to 10V (voltage table V2 reading), this moment, the tester voltage table should be ratings (1140/3300), and opening resistor starting switch K4, descending regulator potentiometer W4 move to tester, observation test instrument ohmmeter reading, close the resistance starting switch, measure W4 resistance, comparison and reading error.Leak resistance standard value: 1140V/20K Ω, 3300V/50K Ω;
Second step: restart resistance starting K switch 4, ascending regulator potentiometer W4 to tester ohmmeter reading greater than the electric leakage working value, the locking lamp goes out, and closes the voltage starting switch, and the locking lamp is lighted again, continuation is gone out to the locking lamp to big regulator potentiometer W4, observation test instrument ohmmeter reading is closed resistance starting K switch 4, measures the W4 resistance, comparison and reading error, locking resistance standard value: 1140V/40K Ω, 3300V/100K Ω;
The 3rd step: close resistance starting K switch 4, reset test instrument and electrical secondmeter repeat aforesaid operations, can measure actuation time.
7, insulation open circuit performance and parameter testing
The first step: press functional select switch HK7 to the open-circuit position of insulating, opening resistor starting switch K4, ascending regulator potentiometer W1 move to tester, close resistance starting K switch 4, measure the W1 resistance, and standard value is 0.8～1.5K Ω;
Second step: reset test instrument and electrical secondmeter, opening resistor starting switch K4 reads the electrical secondmeter reading, is actuation time.
8, insulation short-circuit capability and parameter testing
The first step: press functional select switch HK8 to the location of short circuit that insulate, opening resistor starting switch K4, descending regulator potentiometer W1 move to tester, close resistance starting K switch 4, measure the W1 resistance, and standard value is 3.0～5.5K Ω;
Second step: reset test instrument and electrical secondmeter, opening resistor starting switch K4 reads the electrical secondmeter reading, is actuation time.
9, overtemperature performance and parameter testing
Press functional select switch HK9 to the overtemperature position, opening resistor starting switch K4, descending regulator potentiometer W3 is extremely--the flicker of-GZBD-1 overtemperature lamp, close resistance starting K switch 4, and measure the W3 resistance, restart resistance starting K switch 4, continuation is to the minor adjustment potentiometer, goes out to GZBD-1 overtemperature lamp, closes resistance starting K switch 4, measure the W3 resistance, standard value is 1.3～6.8K Ω.
Claims (4)
1. grid system integrated protector tester is characterized in that having in its circuit structure:
One power circuit of being made up of transformer TB1, commutated current, filtering circuit and three terminal regulator provides working power for tester itself;
One voltage analog circuit and current analog circuit, simulation produces operating voltage and the working current of high-voltage fence under overload, short circuit, superpotential, under-voltage; Simulation produces residual voltage and zero-sequence current carries out the leak current fault simulation of GZBD high-pressure side Electric net protector;
The fault actions time of one Chronograph record comprehensive protection device;
One is used for the test function selector switch selected in various fault test functions, and its selected test function comprises overload, short circuit, superpotential, under-voltage and electric leakage;
One is used for selecting between GZBD high-pressure side Electric net protector and DZBD low-pressure side Electric net protector the GZBD, the DZBD that test to test selector switch;
One output relay is that H does corresponding control with the separating brake relay J after the delay time of GZBD and DZBD all types fault;
One leaks earth potential device W4 is used for simulation impedance with producing leakage, detects the size of leaking the ground impedance in the leakage tests; And carry out the earth leakage search/lockout fault simulation of DZBD with described potentiometer W4 simulation leak resistance.
2. grid system integrated protector tester according to claim 1 is characterized in that described voltage analog circuit is made up of pressure regulator TY1, control contact J3-3, J3-4, J4-1, J4-2 and transformer TB2; Described current analog circuit is made up of pressure regulator TY2, control contact J5-1, J5-2, transformer TB3 and TB4.
3. grid system integrated protector tester according to claim 1; it is characterized in that being provided with GZBD misoperation warning circuit, is at the output terminal ZB10 of GZBD the buzzer alarm circuit of being made up of normally opened contact JB1-1, normally closed contact JB2-1 and hummer to be set.
4. grid system integrated protector tester according to claim 1 is characterized in that between described each test function selector switch mechanical interlock being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100218538A CN101344552B (en) | 2008-08-15 | 2008-08-15 | Grid system integrated protector tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100218538A CN101344552B (en) | 2008-08-15 | 2008-08-15 | Grid system integrated protector tester |
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| CN101344552B true CN101344552B (en) | 2010-12-01 |
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| CN2008100218538A Expired - Fee Related CN101344552B (en) | 2008-08-15 | 2008-08-15 | Grid system integrated protector tester |
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| CN101980592A (en) * | 2010-10-08 | 2011-02-23 | 徐州上若智能电器有限公司 | High-voltage integrated protector shell with double connected layers |
| CN102305895B (en) * | 2011-05-23 | 2013-11-20 | 上海电器成套厂有限公司 | Testing device for data collection platform (DCP) integrated protection device and operating method of testing device |
| CN102982711B (en) * | 2012-11-22 | 2015-02-25 | 郑州万特电气有限公司 | Training device of split-phase breaker spring operation mechanisms |
| CN103676890A (en) * | 2013-12-18 | 2014-03-26 | 江苏方天电力技术有限公司 | Automatic calibrating device of comprehensive protection system |
| CN104502765B (en) * | 2014-12-24 | 2018-04-20 | 格力电器（合肥）有限公司 | A kind of power transformer secondary short circuited experimental rig |
| CN104678221A (en) * | 2015-03-03 | 2015-06-03 | 安徽鑫龙电器股份有限公司 | Comprehensive protection device testing bench and testing method thereof |
| CN107064635A (en) * | 2016-11-11 | 2017-08-18 | 郭云花 | Low-voltage short-circuit impedance tests auxiliary machine |
| CN108594053B (en) * | 2018-03-14 | 2024-03-29 | 四川川煤华荣能源股份有限公司 | Tester for comprehensive protector of motor |
| CN108181581B (en) * | 2018-03-19 | 2023-12-22 | 山东省产品质量检验研究院 | Intelligent testing device and testing method for residual current operated protector |
| CN113341256B (en) * | 2021-06-11 | 2022-08-05 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Detection method, device, equipment and medium for transformer substation relay protection system |
| CN113708665B (en) * | 2021-06-16 | 2024-01-02 | 大力电工襄阳股份有限公司 | TCS (train control system) falling and supplementing solid state soft start device control method and system |
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| CN101043131A (en) * | 2007-04-13 | 2007-09-26 | 中山市天富智能电器有限公司 | AI electric power terminal protectors |
| CN201247289Y (en) * | 2008-08-15 | 2009-05-27 | 安徽理工大学 | High-voltage network integrated protector tester |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043131A (en) * | 2007-04-13 | 2007-09-26 | 中山市天富智能电器有限公司 | AI electric power terminal protectors |
| CN201247289Y (en) * | 2008-08-15 | 2009-05-27 | 安徽理工大学 | High-voltage network integrated protector tester |
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