CN114353871A - Transformer substation operation and maintenance debugging method - Google Patents
Transformer substation operation and maintenance debugging method Download PDFInfo
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- CN114353871A CN114353871A CN202111612008.XA CN202111612008A CN114353871A CN 114353871 A CN114353871 A CN 114353871A CN 202111612008 A CN202111612008 A CN 202111612008A CN 114353871 A CN114353871 A CN 114353871A
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- 238000012423 maintenance Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 66
- 239000013307 optical fiber Substances 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 230000007935 neutral effect Effects 0.000 claims abstract description 11
- 230000009466 transformation Effects 0.000 claims abstract description 9
- 230000000630 rising effect Effects 0.000 claims abstract description 4
- 230000000875 corresponding effect Effects 0.000 claims description 39
- 238000004146 energy storage Methods 0.000 claims description 17
- 230000008054 signal transmission Effects 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a transformer substation operation and maintenance debugging method, which specifically comprises the following steps: s1, testing fiber attenuation: connecting one end of a test optical fiber with a light source emission instrument, starting equipment to emit a visible light source, finding the corresponding other end at the other end, transmitting a broadcast with a corresponding wavelength with the light source emission instrument, and connecting a corresponding wavelength interface at the other end with a multimode optical fiber attenuation tester to test attenuation; s2, transformer neutral point rising current test: the positive electrode of the ammeter is connected with the positive electrode of a neutral point CT of the transformer, the current is boosted to the primary side according to the transformation ratio, and relevant data are recorded and calculated. The invention can effectively ensure the quantitative detection and debugging of data of various primary equipment and secondary equipment of the transformer substation, has wide debugging range, avoids the condition that debugging equipment is lack of omission, reduces potential safety hazards, is beneficial to the operation of transformer substation operation and maintenance personnel, and has better application value.
Description
Technical Field
The invention relates to the technical field of transformer substations, in particular to a transformer substation operation and maintenance debugging method.
Background
The transformer substation is a place for changing voltage, in order to transmit electric energy generated by a power plant to a remote place, the voltage must be increased and changed into high voltage, and the voltage is reduced as required near a user.
The Chinese patent CN201711277731.0 discloses a multipoint virtual data injection type intelligent substation field debugging method, which comprises the following specific steps: (1) and framework analysis: determining a field test framework of the intelligent substation and the number and the type of test data injection points; (2) and data fitting: virtualizing test data of all injection points according to sampling intervals or switch intervals; (3) sampling and debugging a switch loop: debugging a sampling loop and a switch loop of the intelligent substation; (4) and debugging the subsystem: and debugging the secondary system of the intelligent substation in different areas. The debugging method provided by the invention is focused on improving the safety, reliability and economy of construction engineering of the intelligent substation, effectively shortens the system acceptance period, provides guidance for a large number of system-level tests in the future, and has good engineering application value.
In the patent, effective data quantitative detection and debugging cannot be carried out on various primary devices and secondary devices of a transformer substation, the condition that debugging devices lack omission exists, certain potential safety hazards exist, the requirement is difficult to meet, and therefore a transformer substation operation and maintenance debugging method is provided for solving the problems in the background technology.
Disclosure of Invention
The invention aims to provide a transformer substation operation and maintenance debugging method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a transformer substation operation and maintenance debugging method specifically comprises the following steps:
s1, testing fiber attenuation: connecting one end of a test optical fiber with a light source emission instrument, starting equipment to emit a visible light source, finding the corresponding other end at the other end, transmitting a broadcast with a corresponding wavelength with the light source emission instrument, and connecting a corresponding wavelength interface at the other end with a multimode optical fiber attenuation tester to test attenuation;
s2, transformer neutral point rising current test: the positive electrode of the ammeter is connected with the positive electrode of a transformer neutral point CT, the current rises to the primary side according to the transformation ratio, and relevant data are recorded and calculated;
s3, testing non-electric quantity signal transmission of the transformer: short-circuit the non-electric quantity protection signal loop, observe whether the signal transmission is normal or not in the body cabinet and the background equipment, shift the transformer thermometer to the specified signal temperature position, observe whether the signal is normal or not in the body cabinet and the background equipment, then slowly put back, and observe whether the corresponding circuit breaker can be correctly tripped or not;
s4, testing signal transmission of a circuit breaker operation box: short-circuit the air pressure signal loop, observe whether the background display is normal, close the circuit breaker when short-circuit the low-air pressure locking loop, observe whether the circuit breaker can act, guarantee that it can not act when locking, observe the background display after disconnecting the AC loop and the energy storage loop power supply, disconnect the energy storage power supply when the switch stores energy, observe whether there is a fault of the energy storage motor;
s5, testing the position transmission of the circuit breaker, the trolley, the isolation switch and the grounding switch: the breaker, the trolley, the isolation switch and the grounding knife are sequentially switched on and off, the positions are respectively observed, the energy storage handle is driven to the spot, the trolley breaker is subjected to one-time on-off energy unloading operation, observation background display is carried out, the energy storage power supply in the operation box is switched off in an idle mode, and the breaker is subjected to one-time on-off energy unloading operation, observation background display is carried out;
s6, CT upflow test: connecting two ends of current of a current booster to two ends of the CT respectively, boosting the current to the primary side according to a transformation ratio, recording related data and calculating;
s7 current addition test: and connecting the three phases of the relay protection testers Ia, Ib and Ic to the current metering loop A, B, C or the current protection loop A, B, C of the wiring terminal, connecting In to the loop S2, adding the In, and observing whether the display of the measurement and control device and the display of the protection device are normal or not.
And S8 main transformer protection test: the SV straight lighting fiber behind the protection device is changed into the optical fiber of an optical digital relay protection tester, SCD files at corresponding intervals are downloaded on a computer and optical ports are distributed, an action setting value, an action current (voltage) value and an action time limit are set on a control panel of the protection device, a tester is used for adding quantity to a protection loop after a corresponding soft pressing plate is pressed, corresponding current amount and time limit are added according to the protection type to be tested, whether the panel data of the protection device is normal or not is observed, whether a switch is tripped or not is judged, a non-electric quantity protection signal loop corresponding to the tripping is short-circuited, the corresponding pressing plate is put on, whether a corresponding breaker can be normally tripped when a signal is sent out or not is observed, whether corresponding action records exist when corresponding protection action is observed on a background, and whether the current is in an allowed range when the action is observed on a fault recording device.
Preferably, in S1, the light source emission instrument and the multimode fiber attenuation tester should be adjusted to the same wavelength, and the test fiber should be inserted into the terminal port with the corresponding wavelength.
Preferably, the current flow directions of the current boosters in S2 and S6 both flow from P1 to P2.
Preferably, the flow rate rise in S2 and S6 ensures that the secondary side is an integer value, which is convenient for reading calculation.
Compared with the prior art, the invention has the following beneficial effects:
the invention can effectively ensure that each item of primary equipment and secondary equipment of the transformer substation are subjected to quantitative detection and debugging of data by sequentially carrying out optical fiber attenuation test, transformer neutral point upwash test, transformer non-electric quantity signal transmission test, circuit breaker operation box signal transmission test, circuit breaker, trolley, isolation switch and grounding switch position transmission test, CT upwash test, current addition test, main transformer protection test and the like on the transformer substation equipment, has wide debugging range, avoids the condition of lacking and missing of debugging equipment, reduces potential safety hazard, is beneficial to operation and maintenance personnel of the transformer substation, and has better application value.
Drawings
FIG. 1 is a block diagram of the operation and maintenance debugging steps of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a transformer substation operation and maintenance debugging method specifically includes the following steps:
s1, testing fiber attenuation: connecting one end of the test optical fiber with a light source emission instrument, starting the equipment to emit a visible light source, finding the other end corresponding to the visible light source at the other end, emitting a broadcast with a corresponding wavelength by the light source emission instrument, connecting a corresponding wavelength interface at the other end by a multimode optical fiber attenuation tester to test attenuation, and checking whether each loop optical fiber is correctly inserted into a corresponding port and testing whether the attenuation of the optical fiber is in a specified value through the optical fiber attenuation test.
S2, transformer neutral point rising current test: the positive electrode of the ammeter is connected with the positive electrode of a transformer neutral point CT, current is boosted to the primary side according to the transformation ratio, relevant data is recorded and calculated, whether the secondary winding is connected in a staggered mode or not can be detected through a transformer neutral point current boosting test, and whether the CT transformation ratio is accurate or not and whether the instrument is detected normally or not are observed.
S3, testing non-electric quantity signal transmission of the transformer: short circuit non-electric quantity protection signal return circuit observes at body cabinet and backstage equipment whether signal transmission is normal, stirs transformer thermometer to appointed signal temperature position, observes at body cabinet and backstage equipment whether normal, and the back slowly puts back, observes corresponding circuit breaker and can correctly trip, through the transmission test of transformer non-electric quantity signal, can detect whether correctly transmit the backstage to non-electric quantity signal.
S4, testing signal transmission of a circuit breaker operation box: the device comprises a circuit breaker, an air pressure signal circuit, an alternating current circuit, an energy storage circuit power supply, a switch, an energy storage power supply and a control box, wherein the air pressure signal circuit is in short circuit, whether the background display is normal or not is observed, the circuit breaker is closed when the low-air pressure locking circuit is in short circuit, whether the circuit breaker can act or not is observed, the background display is observed after the alternating current circuit and the energy storage circuit power supply are disconnected, the energy storage power supply is disconnected when the switch stores energy, whether the energy storage motor has faults or not is observed, and whether signals of the control box can be accurately transmitted to the background or not can be detected through signal transmission testing of the circuit breaker control box.
S5, testing the position transmission of the circuit breaker, the trolley, the isolation switch and the grounding switch: the circuit breaker, the trolley, the isolation switch and the grounding knife are sequentially switched on and off, positions are respectively observed, the energy storage handle is placed on the spot, the trolley circuit breaker is subjected to one-time switching-on/switching-off operation to observe background display, the energy storage power supply in the operation box is switched off in an idle mode, the circuit breaker is subjected to one-time switching-on/switching-off operation to observe background display, normal actions of the circuit breaker, the trolley, the isolation switch and the grounding knife can be checked through a transmission test of the positions of the circuit breaker, the trolley, the isolation switch and the grounding knife, the circuit breaker, the trolley, the isolation switch and the grounding knife can be in place after the actions, and whether the displays in the device and the background are normal can be detected.
S6, CT upflow test: the two ends of the current booster are respectively connected with the two ends of the CT, the current is boosted to the primary side according to the transformation ratio, relevant data is recorded and calculated, whether the secondary winding is connected in a staggered mode or not can be detected through the CT current boosting test, and whether the CT transformation ratio is accurate or not and whether the instrument is detected normally or not are observed.
S7 current addition test: the three phases of the relay protection testers Ia, Ib and Ic are connected to the current metering loop A, B, C or the current protection loop A, B, C of the wiring terminal, In is connected to the loop S2, the current is added, whether the display of the measurement and control device and the display of the protection device are normal or not is observed, and whether the current amount can be accurately transmitted to the background, the protection device, the measurement and control device, the fault recording device and the metering device through the merging unit and the switching device or not can be detected through the current adding test.
And S8 main transformer protection test: the SV straight lighting fiber behind the protection device is changed into an optical digital relay protection tester fiber, SCD files at corresponding intervals are downloaded on a computer and optical ports are distributed, setting action setting value, action current (voltage) value and action time limit on a control panel of the protection device, adding the protection circuit with a tester after pressing a corresponding soft pressing plate, according to the protection type to be tested and the corresponding current magnitude and time limit, observing whether the panel data of the protection device is normal, whether the switch is tripped or not, short-circuiting the non-electric protection signal loop to be tripped, throwing the corresponding pressure plate, observing whether the corresponding circuit breaker can be normally tripped when the signal is sent out, whether corresponding action records exist or not is observed in the background when corresponding protection actions exist, whether current is in an allowed range or not is observed on a fault recorder during action, and whether the circuit breaker can act or not can be tested when the protector acts through a main transformer protection test.
Specifically, in S1, the light source emission instrument and the multimode fiber attenuation tester should be adjusted to the same wavelength, and the test fiber should be inserted into the terminal port with the corresponding wavelength.
Specifically, the current flow directions of the current boosters in S2 and S6 both flow from P1 to P2.
Specifically, the secondary side is ensured to be an integer value by the aid of the flow rate rise in the S2 and the S6, and reading calculation is facilitated.
The invention can effectively ensure that each item of primary equipment and secondary equipment of the transformer substation are subjected to quantitative detection and debugging of data by sequentially carrying out optical fiber attenuation test, transformer neutral point upwash test, transformer non-electric quantity signal transmission test, circuit breaker operation box signal transmission test, circuit breaker, trolley, isolation switch and grounding switch position transmission test, CT upwash test, current addition test, main transformer protection test and the like on the transformer substation equipment, has wide debugging range, avoids the condition of lacking and missing of debugging equipment, reduces potential safety hazard, is beneficial to operation and maintenance personnel of the transformer substation, and has better application value.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A transformer substation operation and maintenance debugging method is characterized by comprising the following steps:
s1, testing fiber attenuation: connecting one end of a test optical fiber with a light source emission instrument, starting equipment to emit a visible light source, finding the corresponding other end at the other end, transmitting a broadcast with a corresponding wavelength with the light source emission instrument, and connecting a corresponding wavelength interface at the other end with a multimode optical fiber attenuation tester to test attenuation;
s2, transformer neutral point rising current test: the positive electrode of the ammeter is connected with the positive electrode of a transformer neutral point CT, the current rises to the primary side according to the transformation ratio, and relevant data are recorded and calculated;
s3, testing non-electric quantity signal transmission of the transformer: short-circuit the non-electric quantity protection signal loop, observe whether the signal transmission is normal or not in the body cabinet and the background equipment, shift the transformer thermometer to the specified signal temperature position, observe whether the signal is normal or not in the body cabinet and the background equipment, then slowly put back, and observe whether the corresponding circuit breaker can be correctly tripped or not;
s4, testing signal transmission of a circuit breaker operation box: short-circuit the air pressure signal loop, observe whether the background display is normal, close the circuit breaker when short-circuit the low-air pressure locking loop, observe whether the circuit breaker can act, guarantee that it can not act when locking, observe the background display after disconnecting the AC loop and the energy storage loop power supply, disconnect the energy storage power supply when the switch stores energy, observe whether there is a fault of the energy storage motor;
s5, testing the position transmission of the circuit breaker, the trolley, the isolation switch and the grounding switch: the breaker, the trolley, the isolation switch and the grounding knife are sequentially switched on and off, the positions are respectively observed, the energy storage handle is driven to the spot, the trolley breaker is subjected to one-time on-off energy unloading operation, observation background display is carried out, the energy storage power supply in the operation box is switched off in an idle mode, and the breaker is subjected to one-time on-off energy unloading operation, observation background display is carried out;
s6, CT upflow test: connecting two ends of current of a current booster to two ends of the CT respectively, boosting the current to the primary side according to a transformation ratio, recording related data and calculating;
s7 current addition test: and connecting the three phases of the relay protection testers Ia, Ib and Ic to the current metering loop A, B, C or the current protection loop A, B, C of the wiring terminal, connecting In to the loop S2, adding the In, and observing whether the display of the measurement and control device and the display of the protection device are normal or not.
And S8 main transformer protection test: the SV straight lighting fiber behind the protection device is changed into the optical fiber of an optical digital relay protection tester, SCD files at corresponding intervals are downloaded on a computer and optical ports are distributed, an action setting value, an action current (voltage) value and an action time limit are set on a control panel of the protection device, a tester is used for adding quantity to a protection loop after a corresponding soft pressing plate is pressed, corresponding current amount and time limit are added according to the protection type to be tested, whether the panel data of the protection device is normal or not is observed, whether a switch is tripped or not is judged, a non-electric quantity protection signal loop corresponding to the tripping is short-circuited, the corresponding pressing plate is put on, whether a corresponding breaker can be normally tripped when a signal is sent out or not is observed, whether corresponding action records exist when corresponding protection action is observed on a background, and whether the current is in an allowed range when the action is observed on a fault recording device.
2. The substation operation and maintenance debugging method according to claim 1, characterized in that: in the S1, the light source emission instrument and the multimode fiber attenuation tester should be adjusted to the same wavelength, and the test fiber should be inserted into the terminal port with the corresponding wavelength.
3. The substation operation and maintenance debugging method according to claim 2, characterized in that: both the current flow of the current booster in S2 and S6 are from P1 to P2.
4. The substation operation and maintenance debugging method according to claim 3, characterized in that: the ascending flow in S2 and S6 ensures that the secondary side is an integer value, so that the reading calculation is convenient.
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