CN102621417B - Method for testing automatic throw-in equipment of emergency power supply - Google Patents
Method for testing automatic throw-in equipment of emergency power supply Download PDFInfo
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- CN102621417B CN102621417B CN201210081875.XA CN201210081875A CN102621417B CN 102621417 B CN102621417 B CN 102621417B CN 201210081875 A CN201210081875 A CN 201210081875A CN 102621417 B CN102621417 B CN 102621417B
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Abstract
The invention discloses a method for testing automatic throw-in equipment of an emergency power supply. Debugging of the automatic throw-in equipment of the emergency power supply comprises emergency automatic throw-in testing and protection action locking emergency automatic throw-in testing; during testing, a relay protection device is used for simulating the presence or absence of voltages on an I section bus and an II section bus, and detecting whether automatic throw-in is realized under the condition that a bus tie circuit breaker meets emergency automatic throw-in; and meanwhile, automatic throw-in locking is detected under the condition that the bus tie circuit breaker meets protection action locking emergency automatic throw-in. According to the testing method disclosed by the invention, automatic operation can be realized through failure triggering only by ensuring correct setting of a state sequence in the relay protection device; the method has the characteristics of high testing accuracy, high success ratio and high reliability, and emergency automatic throw-in testing can be performed at one step; and moreover, the method requires a small quantity of testing personnel, and the overall debugging efficiency of a transformer substation is increased greatly when debugging work is busy.
Description
Technical field
The present invention relates to supply and distribution field, relate in particular to a kind of method that automatic throw-in equipment of emergency power supply is tested.
Background technology
Automatic throw-in equipment of emergency power supply is called for short prepared auto restart, and in prior art, carrying out prepared auto restart test is generally to use voltage analog unit simulation two-way primary voltage, inlet wire decompression by experiment personnel pull out a road simulation incoming power and realize.Because inlet wire is three-phase alternating current, manual operation may cause three test wires time of successively extracting to surpass the delayed setting time of prepared auto restart, thereby cannot trigger prepared auto restart entry condition.And in the test of protection action locking prepared auto restart, must guarantee to make incoming relay-protection device I section bus loss of pressure be detected before lead-in circuit breaker is because of overcurrent protection tripping operation, avoid lead-in circuit breaker to disconnect and cause locking prepared auto restart to fail to reach entry condition too early.Therefore, testing crew must be when adding stream pull line, to personnel coordinate with operation require highly, success ratio is low, efficiency and the accuracy of impact debugging greatly.
Summary of the invention
The object of this invention is to provide a kind of method that automatic throw-in equipment of emergency power supply is tested, solve the inaccurate and low problem of testing efficiency of test result that in the test of prior art prepared auto restart, manual operation causes.Provide a kind of precisely, method of testing easily, the manual maloperation of having avoided tester to occur, improves success of the test rate, can effectively reduce tester's quantity, avoids doing over again.
In order to realize foregoing invention object, the invention provides a kind of method that automatic throw-in equipment of emergency power supply is tested, described automatic throw-in equipment of emergency power supply is realized standby power supply by cut-offfing of bus in control 35KV switch cubicle and is automatically dropped into.The 35KV of urban track traffic electric substation switch cubicle adopts two-way three-phase alternating current 35KV inlet wire as power supply, uses segmentation single busbar mode to next stage power transmission; During normal operation, bus is in dividing position with isolation I section bus and II section bus.Described automatic throw-in equipment of emergency power supply is debugged and comprised that prepared auto restart drops into test, described prepared auto restart drops into test and comprises:
With protective relaying device, add three-phase voltage Simulation with I section bus to have pressure, II section bus has pressure;
After prepared auto restart has charged, Simulation with I section bus loss of pressure; No. 1 incoming relay-protection device, after the time delay of inspection decompression, says the word to mother protection measure and control device, detects mother protection measure and control device and whether haul oneself willingly into the bus that closes after logic judgement;
If described bus is hauled oneself willingly into and closed after logic discrimination, prepared auto restart drops into normal; If described bus can not be hauled oneself willingly into and close after logic discrimination, prepared auto restart drops into fault.
Wherein, described automatic throw-in equipment of emergency power supply is debugged and also comprised the test of protection action locking prepared auto restart, the test of described protection action locking prepared auto restart comprises:
With protective relaying device, add three-phase voltage Simulation with I section bus to have pressure, II section bus has pressure;
After prepared auto restart has charged, by protective relaying device, at the incoming relay-protection device side terminal of I section bus bar side, add fault current, disconnect I section busbar voltage simultaneously, after the time delay that lead-in circuit breaker is adjusted through overcurrent protection, trip;
Whether detect described bus hauls oneself willingly into and closes after logic discrimination;
If described bus can not be hauled oneself willingly into and close after logic discrimination, protection action locking prepared auto restart is normal; If described bus is hauled oneself willingly into and closed after logic discrimination, protect action locking prepared auto restart fault.
Wherein, before carrying out the test of described prepared auto restart input and the test of described protection action locking prepared auto restart, also comprise: the cable of two-way three-phase alternating current 35KV service entrance switch secondary voltage leading-out terminal is pulled down, protective relaying device is accessed respectively to three-phase supply, in order to Simulation with I section bus, II section bus, have pressure or with no pressure; By on the current output terminal access incoming relay-protection device side terminal of protective relaying device.
Wherein, described protective relaying device comprises status switch module; before carrying out the test of described prepared auto restart input and the test of described protection action locking prepared auto restart; also comprise: in described status switch module, pre-fault status and malfunction are set, make tester can utilize fault Trigger Function to simulate road three-phase inlet wire decompression simultaneously.
Compared with prior art, the present invention has following beneficial effect:
The present invention simulates two-way primary voltage with the protective relaying device that comprises status switch module, by pre-fault status and malfunction are set in status switch module, tester can utilize fault Trigger Function to simulate road three-phase inlet wire decompression simultaneously, the manual maloperation of so just having avoided tester to occur, improve success of the test rate, the test of having avoided doing over again; Because instrumentation has replaced manually pulling out line, also reduced tester's quantity simultaneously.And in the test of protection action locking prepared auto restart; with relay equipment simulation two-way primary voltage; and provide a road fault current to export; by pre-fault status and malfunction are set in status switch module, tester makes I section bus loss of pressure when can trigger correct simulation incoming relay-protection action by fault.Compare with traditional test, method of testing of the present invention can guarantee the normal decompression of I section bus and inlet wire current protection actuating signal can be after I section bus loss of pressure, prepared auto restart passes to mother protective device, thereby guarantees locking success before completing.Confidence level and the reliability of test have been increased so greatly.Simultaneously; difficulty, personnel amount that the personnel that traditional manual operation protects the test of action locking prepared auto restart to need coordinate are all greater than the inventive method prepared auto restart method of testing; method of testing of the present invention only needs the correct setting of Guarantee Status sequence; by fault, just trigger and can realize automatic operation; so also improved success of the test rate, the test of having avoided doing over again.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing:
Fig. 1 is urban track traffic substation busbars schematic diagram;
Fig. 2 is that embodiment of the present invention prepared auto restart drops into method of testing process flow diagram;
Fig. 3 is embodiment of the present invention protection action locking prepared auto restart method of testing process flow diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In the present invention's explanation, automatic throw-in equipment of emergency power supply is called for short prepared auto restart or backup auto-activating device, in urban track traffic electric substation, there are some switch cubicles, in each switch cubicle, be equipped with P143 protective device, the required function of electric substation's relay protection that P143 protective device is integrated, comprise that whether detect the electric current and voltage of the switch cubicle of flowing through normal, under accident conditions, order the respective circuit breakers separating brake in switch cubicle; Prepared auto restart function; To functions such as integrated monitoring apparatus transmission data, signals.
Referring to Fig. 1, be urban track traffic substation busbars schematic diagram, the 35KV of urban track traffic electric substation switch cubicle adopts two-way three-phase alternating current 35KV inlet wire (No. 1 inlet wire, No. 2 inlet wires) as power supply; In institute, use segmentation single busbar mode (I section bus, II section bus) to next stage power transmission, while normally moving, bus is by bus staged isolation, and bus is in a minute position, and two-way bus is powered to next stage respectively.When No. 1 inlet wire breaks down; voltage lower than setting valve after; No. 1 lead-in circuit breaker 101 is controlled separating brake by mother protection measure and control device after incoming relay-protection device inspection decompression; the backup auto-activating device action bus 110 that closes; thereby make No. 2 inlet wires by II section bus and bus 110 to I section bussed supply, wherein bus is positioned at mother cabinet.
The embodiment of the present invention is tested and is comprised that prepared auto restart drops into test and the test of protection action locking prepared auto restart automatic throw-in equipment of emergency power supply.Wherein, prepared auto restart drops into and to refer to when a certain inlet wire self breaks down, and backup auto-activating device can move the bus 110 that closes, thereby makes No. 2 inlet wires pass through II section bus and bus 110 to I section bussed supply.And protection action locking prepared auto restart refer to when electric substation in faults itself cause trip protection time, backup auto-activating device should be locked, akinesia.
Before carrying out the embodiment of the present invention automatic throw-in equipment of emergency power supply is tested, need to prepare as follows:
1), 35kV breaker of switch cabinet control loop power supply, motor accumulation power supply, protective device working power, control signal dish main control unit working power, maintenance calculations machine working power are normal;
2), 35kV is into and out of line cabinet breaker 101,102 in co-bit, three-station 1011,1021 is in co-bit;
3), 35kV bus 110 minute position, three-station 1101,1102 is in co-bit;
4), 35kV mother hauls oneself willingly into function " input ", the PTMCB of voltage transformer pt 1, PT2 is in co-bit, MCB1 is in co-bit.Wherein, PT1, PT2 are arranged on respectively incoming line cabinet 1, No. 2, by the primary side voltage induced on 1, No. 2 inlet wire, are that secondary side voltage (PT secondary side) is for measuring and protection; PTMCB is the miniature circuit breaker (Micro Circuit Breaker) that connects voltage transformer secondary side and mother PT parallel device; MCB1 connects mother PT parallel device and P143 protective device.Must guarantee that two MCB are normal in co-bit guarantee voltage detecting function.Prepared auto restart test is used protective relaying device output voltage to replace the voltage of voltage transformer secondary side.
5), by No. 1 inlet wire, the cable of the PTMCB air switch leading-out terminal of No. 2 inlet wires (I, II section WV) is pulled down, with relay equipment, access respectively three-phase supply, add respectively when needed three-phase voltage Simulation with I section bus, II section bus to have pressure or with no pressure; By relay equipment current output terminal access inlet wire current mutual inductor secondary side terminal.Inlet wire current mutual inductor secondary side is connected with P143 protective device.In the present invention, method of testing is with replacing Current Transformer Secondary side with protective relaying device output current.
In conjunction with Fig. 2, Fig. 3, prepared auto restart dropped into method of testing respectively below and protect action locking prepared auto restart method of testing to elaborate.
Referring to Fig. 2, for embodiment of the present invention prepared auto restart drops into method of testing process flow diagram, comprising:
With protective relaying device, add state before three-phase voltage Simulation with I section bus and II section bus-bar fault, be that Simulation with I section bus and II section bus all have pressure, concrete mode is: two-way 35KV incoming line switch cabinet air switch leading-out terminal is connected respectively with relay equipment two-way voltage output end, by protective relaying device output two-way three-phase 57.74V voltage analog pre-fault status; After prepared auto restart has charged, malfunction is set in protective relaying device is 0V and trigger fault by button, Simulation with I section bus loss of pressure, and now No. 1 incoming relay-protection device, after the time delay of inspection decompression, says the word to mother protection measure and control device; Detect mother protection measure and control device and whether haul oneself willingly into the bus that closes after logic judgement; If described bus is hauled oneself willingly into and closed after logic judgement, prepared auto restart drops into normal; If described bus can not be hauled oneself willingly into and close after after logic judgement, prepared auto restart drops into fault.Wherein prepared auto restart charging is a traditional call, and essence is that the logic by the P143 protective device in mother cabinet provides time delay, i.e. a duration of charging.
Referring to Fig. 3, be embodiment of the present invention protection action locking prepared auto restart method of testing process flow diagram, comprising:
With protective relaying device, add state before three-phase voltage Simulation with I section bus and II section bus-bar fault, be that Simulation with I section bus and II section bus all have pressure, two-way 35KV incoming line switch cabinet air switch leading-out terminal is connected respectively with protective relaying device two-way voltage output end, by electric current output access incoming relay-protection device side terminal, by relay equipment output two-way three-phase 57.74V voltage analog pre-fault status; After prepared auto restart has charged, it is 0V that malfunction is set in protective relaying device, electric current output 2A triggers zero-sequence current protection, by button, trigger fault again, incoming relay-protection device side terminal in I section bus bar side adds fault current, whether Simulation with I section bus loss of pressure, trips after the time delay that lead-in circuit breaker is adjusted through overcurrent protection simultaneously, now detect described bus and haul oneself willingly into and close after setting time; If described bus can not be hauled oneself willingly into and close after logic judgement, protection action locking prepared auto restart is normal, if described bus is hauled oneself willingly into and closed after logic judgement, protects action locking prepared auto restart fault.
Described protective relaying device comprises status switch module, can be by pre-fault status and malfunction being set in described status switch module, make tester can utilize fault Trigger Function to simulate road three-phase inlet wire decompression simultaneously, the manual maloperation of so just having avoided testing crew to occur, improve success of the test rate, the test of having avoided doing over again; Because instrumentation has replaced manually pulling out line, also reduced the quantity of testing crew simultaneously.In the embodiment of the present invention, described protective relaying device is preferably PW4661 protective relaying device.
The present invention compares with conventional test methodologies, the feature that measuring accuracy is high, success ratio is high, reliability is strong, prepared auto restart test can settle at one go, and the tester of the inventive method demand is few, has greatly improved the whole debugging efficiency of electric substation when debugging is busy.
Disclosed all features in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this instructions (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (3)
1. a method of automatic throw-in equipment of emergency power supply being tested, described automatic throw-in equipment of emergency power supply is realized power supply by cut-offfing of bus in control 35KV switch cubicle and is automatically dropped into; The 35KV of urban track traffic electric substation switch cubicle adopts two-way three-phase alternating current 35KV inlet wire as power supply, use segmentation single busbar mode to next stage power transmission, during normal operation, bus is in dividing position with isolation I section bus and II section bus, it is characterized in that, described automatic throw-in equipment of emergency power supply is tested and comprised that automatic throw-in equipment of emergency power supply drops into test, described automatic throw-in equipment of emergency power supply drops into test and comprises:
With protective relaying device, add three-phase voltage Simulation with I section bus to have pressure, II section bus has pressure;
After automatic throw-in equipment of emergency power supply has charged, Simulation with I section bus loss of pressure; No. 1 incoming relay-protection device, after the time delay of inspection decompression, says the word to mother protection measure and control device, detects mother protection measure and control device and whether haul oneself willingly into the bus that closes after logic judgement;
If described bus is hauled oneself willingly into and closed after logic judgement, automatic throw-in equipment of emergency power supply drops into normal; If described bus can not be hauled oneself willingly into and close after logic judgement, automatic throw-in equipment of emergency power supply drops into fault;
Described protective relaying device comprises status switch module; before carrying out the test of described automatic throw-in equipment of emergency power supply input and the test of protection action locking automatic throw-in equipment of emergency power supply; in described status switch module, pre-fault status and malfunction are set, make tester can utilize fault Trigger Function to simulate road three-phase inlet wire decompression simultaneously.
2. the method that automatic throw-in equipment of emergency power supply is tested as claimed in claim 1; it is characterized in that; described automatic throw-in equipment of emergency power supply is tested and also comprised the test of protection action locking automatic throw-in equipment of emergency power supply, the test of described protection action locking automatic throw-in equipment of emergency power supply comprises:
With protective relaying device, add three-phase voltage Simulation with I section bus to have pressure, II section bus has pressure;
After automatic throw-in equipment of emergency power supply has charged, by protective relaying device, in the incoming relay-protection device side of I section bus bar side, add fault current, disconnect I section busbar voltage simultaneously, after the time delay that lead-in circuit breaker is adjusted through overcurrent protection, trip;
Whether detect described bus hauls oneself willingly into and closes after logic judgement;
If described bus can not be hauled oneself willingly into and close after logic judgement, protection action locking automatic throw-in equipment of emergency power supply is normal; If described bus is hauled oneself willingly into and closed after logic judgement, protect action locking automatic throw-in equipment of emergency power supply fault.
3. the method that automatic throw-in equipment of emergency power supply is tested as claimed in claim 2; it is characterized in that; before carrying out the test of described automatic throw-in equipment of emergency power supply input and the test of described protection action locking automatic throw-in equipment of emergency power supply, also comprise:
The cable of the switch wire outlet terminal of two-way three-phase alternating current 35KV inlet wire is pulled down, protective relaying device voltage output end is accessed respectively to three-phase supply, in order to Simulation with I section bus, II section bus, have pressure or with no pressure;
By the current output terminal access incoming relay-protection device secondary side terminal of protective relaying device.
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| CN201210081875.XA CN102621417B (en) | 2012-03-26 | 2012-03-26 | Method for testing automatic throw-in equipment of emergency power supply |
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| CN201210081875.XA CN102621417B (en) | 2012-03-26 | 2012-03-26 | Method for testing automatic throw-in equipment of emergency power supply |
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| CN102621417B true CN102621417B (en) | 2014-08-06 |
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| CN109239496A (en) * | 2018-10-18 | 2019-01-18 | 福州福光电子有限公司 | A kind of detection device and method of the online holding meanss of battery group |
| CN110174560B (en) * | 2019-04-04 | 2021-04-16 | 河北电力装备有限公司 | Relay protection device state variable testing method |
| CN110247471A (en) * | 2019-07-12 | 2019-09-17 | 国家电网有限公司 | More power backup power supplys automatically engage method |
| CN116953489B (en) * | 2023-09-19 | 2023-11-28 | 中铁电气化铁路运营管理有限公司 | Equipment and method for detecting spare power automatic switching performance of track traction network |
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