CN105319466A - Medium voltage generating equipment simulated on-line detection test method - Google Patents
Medium voltage generating equipment simulated on-line detection test method Download PDFInfo
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- CN105319466A CN105319466A CN201510703084.XA CN201510703084A CN105319466A CN 105319466 A CN105319466 A CN 105319466A CN 201510703084 A CN201510703084 A CN 201510703084A CN 105319466 A CN105319466 A CN 105319466A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
Provided is a medium voltage generating equipment simulated on-line detection test method, which needs no special filing application, performs stimulation through a commercial power line, and has the characteristics of simple process and low cost. A test device comprises a first 10 KV generation set to be tested, a second 10 KV generation set to be tested, substation equipment, a 400 V generation set and a load cabinet. The test method comprises a single machine loading test, a single machine grid connection and secondary grid connection test, and a parallel connection grid connection and secondary grid connection test which are successively carried out. The test method employs mobile substation equipment moving reversibly, builds a high voltage simulation power grid under the condition of commercial power 400v voltage in a short time, and completes functional testing of medium-high voltage equipment, thereby avoiding functional risks of the medium-high voltage equipment, improving operation safety, reducing a failure rate and test costs, and possessing strong practicality.
Description
Technical field
The present invention relates to a kind of analog band electrical testing test method, particularly relate to Hair Fixer electricity equipment simulating live testing test method in one.
Background technology
Along with socioeconomic development, the requirement of people to power quality is more and more higher, the inspection and maintenance of some power equipments can go to carry out when charged, but the replacing of some power equipment needs that original institute on-load is transferred to other power supplys gets on, if, institute more has All other routes to use near exchange device, bypass Live line maintenance method can be selected to go to turn for load, if there is no the circuit that other can be selected, then can go to power to the line load of required replacing power equipment by some movements or fixing generating set, when adopting generating set to power, in order to guaranteed load not power-off, require that generating set is with certain specific function, as grid-connected in unit and secondary is grid-connected, the function such as the grid-connected and secondary of parallel operation is grid-connected.400v and following generating set in manufacturer after this kind of generating set of production, functional test of generating set just can be carried out by city's electric analogy, but the test of the generating set specific function of more than 400v just can not adopt the circuit of the electric pressure of civil power to carry out the functional simulation test of generating set, the test carrying out the generating set specific function of more than 400v needs application of putting on record especially, set up simulation test field, carry out analog band electrical testing, requisition procedure is cumbersome, and the construction cost of test site is also higher.
Summary of the invention
The present invention is directed to above problem, provide a kind of when pressure and above circuit, does not need application of putting on record especially in not having, and program is simple, Hair Fixer electric equipment simulating live testing test method during what expense was low undertaken by line simulation.
Technical scheme of the present invention is:
Testing equipment comprises 10KV generating set one to be measured, 10KV generating set two to be measured, converting equipment, 400V generating set and load cabinet, it is characterized in that, described test method comprises the unit band carried out successively and carries the grid-connected and secondary grid connection test of test, unit and parallel operation is grid-connected and secondary grid connection test.
Described unit band carries test and operates as follows:
1) by wiring diagram, required testing equipment is electrically connected;
2) safety inspection before testing;
3) start 10KV generating set one, power to converting equipment after normal operation;
4) operate and run converting equipment;
5), after confirming that load blower fan normally runs, the no-load running of 10KV generating set one is carried out, recording parameters;
6) service load cabinet, makes 10KV generating set half carrying row, recording parameters;
7) service load cabinet, makes 10KV generating set one full-load run, recording parameters;
8) tested, removed load cabinet, converting equipment and 10KV generating set one successively.
Grid-connected and the secondary grid connection test of described unit operates as follows:
1) by wiring diagram, required testing equipment is electrically connected;
2) safety inspection before testing;
3) start 400V generating set, power to converting equipment after normal operation;
4) converting equipment inverted running, makes the high-pressure side of converting equipment form simulating grid;
5) service load cabinet, to make on described simulating grid with load and records operational factor;
6) start 10KV generating set one, 10KV generating set one is incorporated to described simulating grid after described 10KV generating set one is stable and runs, carry out unit grid connection test and recording parameters;
7) disconnect described simulation net, powered to the load by 10KV generating set one;
8) start 10KV generating set two, after 10KV generating set two is stable, 10KV generating set two is incorporated to 10KV generating set one operation, carries out unit secondary grid connection test and recording parameters;
9) tested, disconnecting consumers cabinet also carries out cable discharge work.
Grid-connected and the secondary grid connection test of described parallel operation operates as follows:
1) by wiring diagram, required testing equipment is electrically connected;
2) safety inspection before testing;
3) start 400V generating set, power to converting equipment after normal operation;
4) converting equipment inverted running, makes the high-pressure side of converting equipment form simulating grid;
5) service load cabinet, to make on described simulating grid with load and records operational factor;
6) start 10kv generating set two, after described 10kv generating set two operates steadily, described 10kv generating set two is incorporated to described simulating grid and runs;
7) start 10kv generating set one, after described 10kv generating set one operates steadily, described 10kv generating set one is incorporated to described simulating grid and runs, realize generating set one, generating set two and simulating grid parallel operation and be incorporated into the power networks;
8) disconnect simulation net, load is powered by 10kv generating set one and 10kv generating set two parallel operation;
9) service load case, disconnecting consumers, discharges to cable and switches output cable;
10) start 400v generating set, treat that described 400v generating set is stablized backward converting equipment and powered;
11) start converting equipment, make the high-pressure side of described converting equipment form a simulating grid;
12) service load case, makes load on described analog electrical guipure, and records operational factor;
13) start 10kv generating set one, after operating steadily, start 10kv generating set two and carry out secondary parallel operation grid connection test and record operational factor;
14) tested, exited secondary parallel operation grid-connect mode, successively disconnecting consumers cabinet, 400v generating set, 10kv generating set one, 10kv generating set two;
15) discharge process is carried out to cable, remove cable, complete.
The on-line operation functional trial of existing mesohigh generating set generally needs application of putting on record especially, set up simulation test field, carry out analog band electrical testing, requisition procedure is cumbersome, the construction cost of test site is also higher, some manufacturers think cost-saving, dislike trouble and even do not do experiment, the mobile converting equipment of reversible operation is adopted in the present invention, mesohigh simulating grid can be set up at short notice under the voltage conditions of civil power 400v, complete the functional test of mesohigh generating set, this shortcoming of functional hidden danger that before effectively avoiding, untested mesohigh generating set exists, improve the security that mesohigh equipment runs, reduce the failure rate of mesohigh equipment, reduce the experimentation cost of mesohigh generating set simultaneously, there is very strong practicality.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram that in the present invention, unit band carries test,
Fig. 2 is the electrical schematic diagram of the grid-connected and secondary grid connection test of unit in the present invention,
Fig. 3 is the electrical schematic diagram of the grid-connected and secondary grid connection test of parallel operation in the present invention.
Embodiment
The present invention as Figure 1-3, carries out functional trial testing equipment and comprises 10KV generating set one to be measured, 10KV generating set two to be measured, converting equipment, 400V generating set and load cabinet.Test method comprises the unit band carried out successively and carries the grid-connected and secondary grid connection test of test, unit and parallel operation is grid-connected and secondary grid connection test.
In the present invention, unit band carries the electrical schematic diagram of test as shown in Figure 1.By electrical schematic diagram, required testing equipment is electrically connected.Be connected with looped network output connector corresponding with transformer case isolating switch in converting equipment by 10kv generating set one, wherein one group of output connector that 2# outgoing line cabinet is corresponding, described connection adopts flexible cable to connect; 1# wire-outgoing breaker in converting equipment and output connector corresponding to 2# wire-outgoing breaker are connected to the same coupling arrangement place of load device; The earth point of 10kv generating set one and converting equipment earth point are connected to grounded screen with ground wire respectively.
Safety inspection before testing.Namely check wiring tie point whether correct, whether phase sequence correct, and checks in 10kv generating set one, whether 1# incoming line cabinet isolating switch and 3# outgoing line cabinet isolating switch are in off-state.To check in converting equipment that looped network goes out cabinet breaker, transformer case isolating switch, main breaker, 1# wire-outgoing breaker and 2# wire-outgoing breaker and whether be in off-state, not at the isolating switch of off-state, operation is to off-state at any time; Check 10kv generating set one generates electricity in cabin whether have foreign matter, and whether fastening cable connects, and carries out insulation measurement to it respectively; Check whether converting equipment and transformer case have foreign matter, and whether fastening cable connects, and carries out insulation measurement to it respectively; Check whether whole test unit ground wire connects fastening, and measure its stake resistance with earth resistance tester, guarantee that whole system stake resistance is less than 4 ohm; Check whether genset diesel oil, machine oil and liquid coolant are in normal condition.
Start 10KV generating set one, power to converting equipment after normal operation.Namely 10kv generating set one is started, Deng genset stable after, by unit allocation IG module cashier's office in a shop, confirm generating voltage, whether frequency reaches designing requirement, operation IG control module GCB button after normal, the 1# incoming line cabinet isolating switch of closed 10kv generating set, by the instrument above 1# incoming line cabinet isolating switch, confirm that whether breaker closing is normal, close a floodgate normally and carry out next step operation.
Operate and run converting equipment.Operate and run converting equipment, confirm that 10kv generating set one generates electricity by electroscope and whether arrive the end opening that converting equipment looped network goes out cabinet breaker, confirm to arrive looped network in rear closed converting equipment and go out transformer case isolating switch in cabinet breaker and converting equipment, transformer charging operation, check step down side output voltage and frequency whether normal, confirm errorless after, main breaker in closed converting equipment low-voltage cabinet, low-voltage cabinet exports isolating switch to two-way branch respectively, select direct output mode, 1# wire-outgoing breaker and 2# wire-outgoing breaker in closed converting equipment low-voltage cabinet.
After confirming that in load cabinet, load blower fan normally runs, the zero load (not bringing onto load) carrying out 10KV generating set one runs, recording parameters.
Service load cabinet, makes 10KV generating set half carrying row, recording parameters.I.e. service load cabinet, is downloaded to semi-load by 10kv generating set one band, and runs by standard hour of operation, observe the running status of unit, and carry out correlation parameter record.
Service load cabinet, makes 10KV generating set one full-load run, recording parameters.I.e. service load cabinet, is downloaded to fully loaded by 10kv generating set one band, and runs by standard hour of operation, observe the running status of unit, and carry out correlation parameter record.
Test completes, and removes load cabinet, converting equipment and 10KV generating set one successively.I.e. service load chamber, all lays down 101# generating set institute bringing onto load, no-load running 5min.Then operate 1# wire-outgoing breaker, 2# wire-outgoing breaker and main breaker separating brake in converting equipment in order respectively, offer for sale transformer case isolating switch and looped network in ring main unit breaker open operation respectively, and converting equipment is out of service.Operation 10kv generating set one IG control module GCB button, disconnected by 1# incoming line cabinet isolating switch, by stop botton in IG module, genset is shut down.After 10kv generating set one is shut down; by the 1# incoming line cabinet breaker closing of 10kv generating set one; closed looped network offers for sale the grounding switch at transformer case isolating switch place in isolating switch and converting equipment respectively, discharges, after discharge off to whole test primary circuit; disconnect 1# incoming line cabinet isolating switch; and disconnect the grounding switch that looped network goes out transformer case isolating switch place in cabinet breaker and converting equipment respectively, cable is removed, arranges; tidy up scene, it is complete that unit band carries test.
In the present invention, the electrical schematic diagram of the grid-connected and secondary grid connection test of unit as shown in Figure 2.By electrical schematic diagram, required testing equipment is electrically connected.Wherein one group of output connector corresponding for the 2# outgoing line cabinet of 10kv generating set one is connected with the looped network output connector going out cabinet breaker with looped network corresponding in converting equipment, wherein one group of output connector corresponding with the 2# outgoing line cabinet of 10kv generating set two for one group of corresponding for the 3# outgoing line cabinet of 10kv generating set one output connector is connected, output connector corresponding for 1# wire-outgoing breaker in transformation device is connected to the coupling arrangement place of load device, main for 400v generating set output is connected to the coupling arrangement place of load device; Connect and all adopt flexible cable to connect; The earth point of the earth point of 110kv generating set one, 10kv generating set two, 400v generating set earth point and converting equipment earth point are connected to grounded screen with ground wire respectively.
Safety inspection before testing.Described safety inspection checks that whether the tie point of connecting line is correct and whether phase sequence is correct according to electrical schematic diagram, and check in 10kv generating set one and 102#, 10kv generating set two, whether 1# incoming line cabinet isolating switch, 3# outgoing line cabinet isolating switch and outgoing line cabinet isolating switch are in off-state; Whether the main circuit breaker in 400v generating set is in off-state; In converting equipment, looped network goes out the isolating switchs such as cabinet breaker, transformer case isolating switch, main breaker and 1# wire-outgoing breaker and whether is in off-state, does not operate off-state at any time at the isolating switch of off-state; Check 10kv generating set one, 10kv generating set two and 400v generating set respectively, whether generating has foreign matter in cabin, and whether cable connects fastening, and carries out insulation measurement to it; Check converting equipment respectively, whether transformer room has foreign matter, and whether cable connects fastening, and carries out insulation measurement to it; Check whether whole test unit ground wire connects fastening, and with earth resistance tester, measure its stake resistance, guarantee that whole system stake resistance is less than 4 ohm; Check genset diesel oil, machine oil, whether liquid coolant is in normal condition.
Start 400V generating set, after waiting genset to stablize, whether correctly to check its generating voltage and frequency by unit allocation screen, confirm normally, the closed main circuit breaker sending out 400v generating set, powers to converting equipment after 400v generating set normal operation.
Converting equipment inverted running, manual closing converting equipment 1# wire-outgoing breaker and main breaker, check low-voltage bus bar electric parameter, confirm errorless after, closed converting equipment transformer case isolating switch and looped network go out cabinet breaker, make the high-pressure side of converting equipment form simulating grid;
Service load cabinet, to make on described simulating grid with load and records operational factor.
By the functional switch indicator main frame of described 10KV generating set one/be placed in position of host machine from machine knob, start 10KV generating set one, after described 10KV generating set one is stable, check generating voltage and frequency whether normal, confirm errorless after, operation IG module GCB button, detect synchronous after 1# isolating switch in closed 10KV generating set one automatically, 10KV generating set one is incorporated into the power networks, and carries out correlation parameter record.
After being incorporated into the power networks 5 minutes, disconnecting 400v generating set main circuit breaker, and 400v generating set shut down, simulation net disconnects, and load is powered by 10KV generating set one.
Start 10KV generating set two, after 10KV generating set two is stable, check that whether generating voltage, frequency be normal, confirm errorless after, press the IG controller GCB button in 10KV generating set two, 10KV generating set two breaker closing, to press in 10KV generating set one MGCB button on IM controller, press MCB button again, 10KV generating set one 3# outgoing line cabinet isolating switch is closed with after date, 10KV generating set two is incorporated to 10KV generating set one and runs 5 minutes, and carry out correlation parameter record.
Disconnecting consumers cabinet, presses the MGCB button on 10KV generating set one IM controller, presses GCB button on 10KV generating set one IG controller, 1# incoming line cabinet breaker open operation in 10KV generating set one, press the MCB button in IM module, 3# outgoing line cabinet breaker open operation, grid-connected cracking; GCB button on operation 10KV generating set two IG controller, 10KV generating set two isolating switch disconnects, and operates the stop botton of 10KV generating set one and 10KV generating set two respectively, and two generating sets are shut down; Cable discharge, and remove, the total power switch of 10KV generating set one and 10KV generating set two operating mechanism, all isolating switchs in manual closing 10KV generating set one and 10KV generating set two, disconnect looped network in converting equipment and go out cabinet breaker and transformer case isolating switch, respectively looped network is gone out the grounding switch ground connection at cabinet breaker and transformer case isolating switch place, all cables discharge completely, oppositely cable is removed, the grid-connected and secondary grid connection test end of operation of unit by access step.
Grid-connected and the secondary grid connection test electrical schematic diagram of parallel operation of the present invention as shown in Figure 3.By electrical schematic diagram, required testing equipment is electrically connected.The one group output connector corresponding by 10KV generating set one 3# outgoing line cabinet is connected with the looped network output connector going out cabinet breaker with looped network corresponding in converting equipment, wherein one group of output connector corresponding with 10KV generating set two 2# outgoing line cabinet for one group of corresponding for 10KV generating set one 2# outgoing line cabinet output connector is connected, output connector corresponding for 1# wire-outgoing breaker in transformation device is connected to the coupling arrangement place of load device, the main output of described 400v generating set is connected to the coupling arrangement place of load cabinet; Described connection all adopts flexible cable to connect; The earth point of the earth point of 10KV generating set one, 10KV generating set two, 400v generating set earth point and converting equipment earth point are connected to grounded screen with ground wire respectively.
Safety inspection before testing.Described safety inspection checks that whether the tie point of connecting line is correct according to electrical schematic diagram, and whether phase sequence is correct, and checks whether each isolating switch is in off-state, and not at the isolating switch of off-state, operation is to off-state at any time; Whether have foreign matter in the generating cabin checking 10KV generating set one, 10KV generating set two and 400v generating set respectively, whether cable connects fastening, and carries out insulation measurement to it; Check in converting equipment whether have foreign matter respectively, whether cable connects fastening, and carries out insulation measurement to it; Check whether whole test unit ground wire connects fastening, and with earth resistance tester, measure its stake resistance, guarantee that whole system stake resistance is less than 4 ohm; Check genset diesel oil, machine oil, whether liquid coolant is in normal condition.
Start 400V generating set, after normal operation, whether correctly to check its generating voltage and frequency by control flow, confirm normally, the main circuit breaker of closed 400V generating set, powers to converting equipment;
Converting equipment inverted running, manual closing converting equipment 1# wire-outgoing breaker, the main breaker of manual closing converting equipment, check low-voltage bus bar electric parameter, confirm errorless after, closed converting equipment transformer case isolating switch and looped network go out cabinet breaker, make the high-pressure side of converting equipment form simulating grid;
Service load cabinet, to make on described simulating grid with load and records operational factor;
Start 10kv generating set two, after described 10kv generating set two operates steadily, described 10kv generating set two is incorporated to described simulating grid and runs.Namely the manual main frame of 10KV generating set one functional switch indicator/from machine knob being placed in is put from seat in the plane, manually by 10KV generating set two functional switch indicator, main frame/be placed in position of host machine from machine knob, start 10KV generating set two, after unit operates steadily, check generating voltage and frequency whether normal, confirm errorless after, operation 10kv generating set two IG module GCB button, detect 1# incoming line cabinet isolating switch in synchronous rear closed 10kv generating set two automatically, 10kv generating set two is incorporated into the power networks.
Start 10kv generating set one, after described 10kv generating set one operates steadily, check generating voltage and frequency whether normal, confirm errorless after, operation 10kv generating set one IG module GCB button, detect 1# incoming line cabinet isolating switch in synchronous rear closed 10kv generating set one automatically, 10kv generating set one and 10kv generating set two parallel operation are incorporated into the power networks, realize generating set one, generating set two and simulating grid parallel operation to be incorporated into the power networks, and carry out correlation parameter record.
After parallel operation is incorporated into the power networks 5 minutes, disconnects 400v generating set main circuit breaker, and shut down by genset, simulation net disconnects, and load is powered by 10kv generating set one and 10kv generating set two parallel operation.
Service load case, disconnecting consumers, discharges to cable and switches output cable.Manual disconnection 10kv generating set one 3# outgoing line cabinet isolating switch, disconnect converting equipment looped network and go out cabinet breaker, looped network is gone out cabinet breaker place grounding switch and be placed in earthing position, bypass cable is discharged, pull up the cable at the corresponding connector place of 10kv generating set one 3# outgoing line cabinet isolating switch, by cable according to connector place corresponding to the 3# outgoing line cabinet isolating switch of phase sequence access 10kv generating set two, converting equipment looped network is gone out cabinet breaker place grounding switch and disconnect, disconnect converting equipment main breaker.
Start 400v generating set, after described 400v generating set is stable, whether correctly to check its generating voltage and frequency, confirm normally, closed 400v generating set main circuit breaker, powers to converting equipment.
Start converting equipment, the main breaker of manual closing converting equipment, check low-voltage bus bar electric parameter, confirm errorless after, closed converting equipment looped network goes out cabinet breaker, the high-pressure side of transformer form the genset such as a mould stable after, make the high-pressure side of described converting equipment form a simulating grid;
Service load case, makes load on described analog electrical guipure, and records operational factor;
Start 10kv generating set one, after operating steadily, start 10kv generating set two and carry out secondary parallel operation grid connection test.Namely by 10kv generating set two, observe 10kv generating set two 3# outgoing line cabinet isolating switch end opening voltage, whether frequency is normal, confirm errorless after, to press in 10kv generating set two MGCB button on IM controller, press MCB button again, close 10kv generating set two 3# outgoing line cabinet isolating switch with after date, 101#10kv generating set one and 10kv generating set two again parallel operation are incorporated into the power networks.Parallel operation is incorporated into the power networks 5 minutes, carries out correlation parameter record.
Test completes, and exits secondary parallel operation grid-connect mode, successively disconnecting consumers cabinet, 400v generating set, 10kv generating set one, 10kv generating set two.I.e. service load cabinet, lay down grid-connected institute bringing onto load, press the MGCB button on 110kv generating set two IM controller, press GCB button on 10kv generating set two IG controller, 1# incoming line cabinet breaker open operation in 10kv generating set one, press the MCB button in 10kv generating set two IM module, 3# outgoing line cabinet breaker open operation, the grid-connected cracking of parallel operation.
Disconnect simulation net, disconnect the main circuit breaker of 400v generating set, and shut down by genset, simulation net disconnects.Operate the stop botton of 10kv generating set one and 10kv generating set two respectively, make 10kv generating set one and 10kv generating set two shutdown.
Discharge process is carried out to cable, removes cable.Disconnect the total power switch of 10kv generating set one and 10kv generating set two operating mechanism, all isolating switchs in manual closing 10kv generating set one and 10kv generating set two, disconnect looped network in converting equipment and go out cabinet breaker and transformer case isolating switch, respectively looped network is gone out the grounding switch ground connection at cabinet breaker and transformer case isolating switch place, all cables discharge completely, oppositely remove cable by access step, and tidy up scene, the grid-connected and secondary grid connection test end of operation of parallel operation.Middle Hair Fixer electricity equipment simulating live testing is complete.
The converting equipment of reversible operation is adopted in the present invention, the functional test of mesohigh generating set is completed under the voltage conditions of civil power 400v, this shortcoming of functional hidden danger that before effectively avoiding, untested mesohigh generating set exists, improve the security that mesohigh equipment runs, reduce the failure rate of mesohigh equipment, reduce the experimentation cost of mesohigh generating set simultaneously, there is very strong practicality.
Claims (4)
1. Hair Fixer electricity equipment simulating live testing test method in a kind, testing equipment used comprises 10KV generating set one to be measured, 10KV generating set two to be measured, converting equipment, 400V generating set and load cabinet, it is characterized in that, described test method comprises the unit band carried out successively and carries the grid-connected and secondary grid connection test of test, unit and parallel operation is grid-connected and secondary grid connection test.
2. Hair Fixer electricity equipment simulating live testing test method in one according to claim 1, it is characterized in that, described unit band carries test and operates as follows:
1) by wiring diagram, required testing equipment is electrically connected;
2) safety inspection before testing;
3) start 10KV generating set one, power to converting equipment after normal operation;
4) operate and run converting equipment;
5), after confirming that load blower fan normally runs, the no-load running of 10KV generating set one is carried out, recording parameters;
6) service load cabinet, makes 10KV generating set half carrying row, recording parameters;
7) service load cabinet, makes 10KV generating set one full-load run, recording parameters;
8) tested, removed load cabinet, converting equipment and 10KV generating set one successively.
3. Hair Fixer electricity equipment simulating live testing test method in one according to claim 1, is characterized in that, the grid-connected and secondary grid connection test of described unit operates as follows:
1) by wiring diagram, required testing equipment is electrically connected;
2) safety inspection before testing;
3) start 400V generating set, power to converting equipment after normal operation;
4) converting equipment inverted running, makes the high-pressure side of converting equipment form simulating grid;
5) service load cabinet, to make on described simulating grid with load and records operational factor;
6) start 10KV generating set one, 10KV generating set one is incorporated to described simulating grid after described 10KV generating set one is stable and runs, carry out unit grid connection test and recording parameters;
7) disconnect described simulation net, powered to the load by 10KV generating set one;
8) start 10KV generating set two, after 10KV generating set two is stable, 10KV generating set two is incorporated to 10KV generating set one operation, carries out unit secondary grid connection test and recording parameters;
9) tested, disconnecting consumers cabinet also carries out cable discharge work.
4. Hair Fixer electricity equipment simulating live testing test method in one according to claim 1, is characterized in that, the grid-connected and secondary grid connection test of described parallel operation operates as follows:
1) by wiring diagram, required testing equipment is electrically connected;
2) safety inspection before testing;
3) start 400V generating set, power to converting equipment after normal operation;
4) converting equipment inverted running, makes the high-pressure side of converting equipment form simulating grid;
5) service load cabinet, to make on described simulating grid with load and records operational factor;
6) start 10kv generating set two, after described 10kv generating set two operates steadily, described 10kv generating set two is incorporated to described simulating grid and runs;
7) start 10kv generating set one, after described 10kv generating set one operates steadily, described 10kv generating set one is incorporated to described simulating grid and runs, realize generating set one, generating set two and simulating grid parallel operation and be incorporated into the power networks;
8) disconnect simulation net, load is powered by 10kv generating set one and 10kv generating set two parallel operation;
9) service load case, disconnecting consumers, discharges to cable and switches output cable;
10) start 400v generating set, treat that described 400v generating set is stablized backward converting equipment and powered;
11) start converting equipment, make the high-pressure side of described converting equipment form a simulating grid;
12) service load case, makes load on described analog electrical guipure, and records operational factor;
13) start 10kv generating set one, after operating steadily, start 10kv generating set two and carry out secondary parallel operation grid connection test and record operational factor;
14) tested, exited secondary parallel operation grid-connect mode, successively disconnecting consumers cabinet, 400v generating set, 10kv generating set one, 10kv generating set two;
15) discharge process is carried out to cable, remove cable, complete.
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| CN112510573A (en) * | 2020-09-29 | 2021-03-16 | 浙江大有实业有限公司带电作业分公司 | Outgoing cable overhauling method based on temporary mobile power supply application |
| CN113851990A (en) * | 2021-08-11 | 2021-12-28 | 浙江大有实业有限公司带电作业分公司 | Method for replacing box-type transformer with low-voltage side completely uninterrupted |
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| CN112510573A (en) * | 2020-09-29 | 2021-03-16 | 浙江大有实业有限公司带电作业分公司 | Outgoing cable overhauling method based on temporary mobile power supply application |
| CN112510573B (en) * | 2020-09-29 | 2022-05-31 | 浙江大有实业有限公司带电作业分公司 | Outgoing cable overhauling method based on temporary mobile power supply application |
| CN113851990A (en) * | 2021-08-11 | 2021-12-28 | 浙江大有实业有限公司带电作业分公司 | Method for replacing box-type transformer with low-voltage side completely uninterrupted |
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