CN112701609A - High-voltage line power failure maintenance method, system and related device - Google Patents
High-voltage line power failure maintenance method, system and related device Download PDFInfo
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- CN112701609A CN112701609A CN202011531521.1A CN202011531521A CN112701609A CN 112701609 A CN112701609 A CN 112701609A CN 202011531521 A CN202011531521 A CN 202011531521A CN 112701609 A CN112701609 A CN 112701609A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
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Abstract
The application discloses a method, a system and a related device for maintaining a high-voltage line in a power failure mode, wherein the method comprises the following steps: selecting a nearest temporary debugging line according to the target line to be overhauled, wherein the temporary debugging line comprises a temporary debugging transformer substation, and the temporary debugging transformer substation comprises a second protection device; adding a newly added line protection device into the transformer substation to be modified according to the protection device II, performing protection modification to obtain a modified transformer substation, wherein the newly added line protection device is consistent with the protection device II; selecting a jump point outside a to-be-overhauled area of a target to-be-overhauled line, and building a temporary jump line with a temporary debugging line at the jump point; and after the power failure maintenance is finished, the temporary jumper connection line is removed, and the jumper wire of the protection line of the target line to be maintained is recovered. The problem that the power failure maintenance work of the heavy-load power transmission line is limited under the condition that the existing power grid mode is limited is solved; the technical problems of poor flexibility and low stability of arrangement of a power grid maintenance mode are solved.
Description
Technical Field
The application relates to the technical field of high-voltage line maintenance, in particular to a high-voltage line power failure maintenance method, a high-voltage line power failure maintenance system and a related device.
Background
The existing high-voltage power supply line with the voltage level of 220kV and above adopts a relay protection device to protect the line equipment. The lines are responsible for electric energy transmission of urban residents and basic industrial electricity to different degrees (generally, the electric energy transmission exceeds 10 ten thousand volt-ampere). If the high-voltage power supply line needs to be subjected to power failure maintenance, generally selecting a low peak period of the power load, and transferring the residual power to other lines in the same power supply range; if the whole transfer is impossible and the overhaul work is urgent, the power consumption of the user must be forcibly limited.
In recent years, the increase of regional and urban electric loads severely hinders the construction of new lines. The arrangement of power failure maintenance of high-voltage power supply lines with voltage levels of 220kV and above is always a difficult problem of regional and urban main power supply networks, and power supply loads cannot be effectively transferred because power transmission networks of adjacent regions are incomplete, maintenance cannot be effectively arranged in low-temperature periods of loads such as winter, and huge pressure is brought to normal operation of the lines.
Disclosure of Invention
The application provides a high-voltage line power failure maintenance method, a system and a related device, which are used for solving the problem that the power failure maintenance work of a heavy-load transmission line is limited under the condition that the existing power grid mode is limited; the technical problems of poor flexibility and low stability of arrangement of a power grid maintenance mode are solved.
In view of this, the first aspect of the present application provides a method for maintaining a high-voltage line in a power failure, including:
selecting a nearest temporary debugging line according to a target line to be overhauled, wherein the target line to be overhauled comprises a transformer substation to be modified, the temporary debugging line comprises a temporary debugging transformer substation, the transformer substation to be modified comprises a first protection device, and the temporary debugging transformer substation comprises a second protection device;
adding a newly-added line protection device into the transformer substation to be modified according to the second protection device, and performing protection modification to obtain a modified transformer substation, wherein the newly-added line protection device is consistent with the second protection device;
selecting a jump point outside the to-be-overhauled region of the target to-be-overhauled line, and building a temporary jump line with the temporary debugging line at the jump point, wherein the temporary jump line adopts the newly-added line protection device to realize optical fiber differential protection;
and after the power failure maintenance is finished, the temporary jumper connection line is dismantled, and the jumper wire of the protection line of the target line to be maintained is recovered.
Preferably, the protection retrofitting comprises: the method comprises the steps of electric energy metering device transformation and secondary equipment deployment transformation.
Preferably, before selecting one jump point outside the to-be-overhauled region of the target to-be-overhauled line, the method further includes:
and performing power failure treatment on the to-be-overhauled area of the target to-be-overhauled line and the corresponding secondary equipment.
Preferably, the transformer substation to be transformed comprises a heavy-load transformer substation and a light-load transformer substation;
correspondingly, the temporary debugging transformer substation comprises a heavy-load transformer substation and a light-load transformer substation.
Preferably, the first protection device and the second protection device both include two-way multiplexing optical fiber channels.
The application second aspect provides a high-voltage line power failure maintenance system, includes:
the system comprises a selection module, a detection module and a control module, wherein the selection module is used for selecting a nearest temporary debugging line according to a target line to be overhauled, the target line to be overhauled comprises a transformer substation to be transformed, the temporary debugging line comprises a temporary debugging transformer substation, the transformer substation to be transformed comprises a first protection device, and the temporary debugging transformer substation comprises a second protection device;
the transformation module is used for adding a newly-added line protection device into the transformer substation to be transformed according to the second protection device to perform protection transformation to obtain a transformed transformer substation, and the newly-added line protection device is consistent with the second protection device;
the jumper connection module is used for selecting a jumper connection point outside the to-be-overhauled area of the target to-be-overhauled line, building a temporary jumper connection line with the temporary debugging line at the jumper connection point, and realizing optical fiber differential protection on the temporary jumper connection line by adopting the newly-added line protection device;
and the recovery module is used for removing the temporary jumper connection line and recovering the jumper wire of the protection line of the target line to be overhauled after the power failure overhaul is finished.
Preferably, the protection retrofitting comprises: the method comprises the steps of electric energy metering device transformation and secondary equipment deployment transformation.
Preferably, the method further comprises the following steps:
and the power failure module is used for performing power failure treatment on the to-be-overhauled area of the target to-be-overhauled line and the corresponding secondary equipment.
A third aspect of the present application provides a high voltage line power outage repair apparatus, the apparatus comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the high-voltage line power outage repair method according to the first aspect according to instructions in the program code.
A fourth aspect of the present application provides a computer-readable storage medium for storing program code for executing the high-voltage line blackout repair method according to the first aspect.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides a high-voltage line power failure maintenance method, which comprises the following steps: selecting a nearest temporary debugging line according to a target line to be overhauled, wherein the target line to be overhauled comprises a transformer substation to be modified, the temporary debugging line comprises a temporary debugging transformer substation, the transformer substation to be modified comprises a first protection device, and the temporary debugging transformer substation comprises a second protection device; adding a newly added line protection device into the transformer substation to be modified according to the protection device II, performing protection modification to obtain a modified transformer substation, wherein the newly added line protection device is consistent with the protection device II; selecting a jump point outside a to-be-overhauled region of a target to-be-overhauled line, building a temporary jump line with a temporary debugging line at the jump point, and realizing optical fiber differential protection on the temporary jump line by adopting a newly-added line protection device; and after the power failure maintenance is finished, the temporary jumper connection line is removed, and the jumper wire of the protection line of the target line to be maintained is recovered.
The power failure maintenance method for the high-voltage line effectively utilizes the same tower with multiple loops and the adjacent transformer substation to realize temporary jumper connection, so that the line after the jumper connection is still put into operation according to a normal state, sufficient maintenance time is provided for operators, the power failure maintenance period is not influenced by the maintenance time limit, and the line of the target line to be maintained and the temporary debugging transformer substation are only influenced by the power failure time when the state is switched. The protection transformation is applied to power supply maintenance, and the technical problem that the power supply load cannot be completely transferred to other lines in the prior art is solved; once the temporary jumper connection line is built, the stability is strong; after the maintenance is finished, the jumper connection circuit is removed, and the original state of the jumper is recovered; the number of the related jump points is small, the jump points are easy to execute, the flexibility is strong, the requirements on actual circuit conditions and temporary debugging of the transformer substation are low, and the practicability is high. Therefore, the problem that the power failure maintenance work of the power transmission line of the existing power grid is limited is solved; the technical problems of poor flexibility and low stability of arrangement of a power grid maintenance mode are solved.
Drawings
Fig. 1 is a schematic flow chart of a method for maintaining a high-voltage line in a power failure according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a high-voltage line blackout maintenance system according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a power supply line deployment modification provided in an embodiment of the present application;
fig. 4 is a schematic diagram illustrating an effect of a power supply line after deployment and modification provided by the embodiment of the application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
For easy understanding, please refer to fig. 1, a first embodiment of a method for maintaining a high-voltage line in a power failure includes:
It can be understood that the substation to be transformed includes a heavy-load substation and a light-load substation; correspondingly, the temporary debugging transformer substation comprises a heavy-load transformer substation and a light-load transformer substation. But the overhaul difficulty is the greatest, and the most easily hit load transfer problem is generally a heavy-load line, which is a more common situation in the actual operation process.
It should be noted that the substation to be modified on the target line to be repaired can be a heavy-duty substation or a light-duty substation, and under a general condition, when the substation to be modified is a heavy-duty substation, the heavy-duty substation has two 220kv high-voltage transmission lines in an operating state, the corresponding protection devices are paired with each other according to colors for a while, and the heavy-duty substation has a heavy electric load, so that the high-voltage line cannot be overhauled in a power failure mode, and the power supply is introduced into the temporary debugging line to provide overhaul time for the heavy-duty circuit. The temporary commissioning substation may also be a heavy or light duty substation. The first protection device and the second protection device respectively comprise a main protection device and a main protection device, namely the protection devices are in a set form.
And 102, adding a newly added line protection device in the transformer substation to be modified according to the protection device II, performing protection modification, and enabling the newly added line protection device to be consistent with the protection device II to obtain the modified transformer substation.
Further, the protection reconstruction comprises: the method comprises the steps of electric energy metering device transformation and secondary equipment deployment transformation.
It should be noted that, in the existing same-tower multi-loop, some adjacent substation lines also exist in some target lines to be overhauled, but because the power transmission network of the adjacent area is incomplete, the power supply load of the lines to be overhauled cannot be effectively transferred to other lines in the same power supply range, and the actual efficiency is poor. The power supply load of the line to be overhauled is transferred to other lines, direct wiring transfer is not required, analysis and even relay protection transformation are required for two different power transmission circuits, and the transfer of the power supply load can be stably realized only when the line protection devices of the transformer substations in the two circuits are in a consistent state. The newly added line protection device added in the target line to be overhauled is consistent with the second protection device, namely the newly added line protection device is consistent with the second protection device in model number with the protection device of the temporary debugging transformer substation, and complete transfer of power supply load is guaranteed. The protection device can be reserved and left unused as soon as the protection device does not need to be dismounted.
Protection transformation is originally the technique in the system equipment upgrading process, and is also relay protection transformation, but in this embodiment introduce the power supply line maintenance according to the demand that power supply load shifts with it, the transformation of transformer substation in this embodiment only relates to the transformation of waiting to reform transform the transformer substation on the circuit that waits to overhaul, and another transformer substation only debugs the cooperation, in order to facilitate unifying the protection device model of two return circuits in the actual process, can also carry out same transformation to debugging the transformer substation temporarily when treating to reform transform the transformer substation. The modification includes the arrangement of some devices besides the change of the protection device, for example, a main meter and an auxiliary meter are arranged in each loop of a variable line of the electric energy metering device, and an electronic multifunctional electric energy meter is adopted; the requirements for the electric energy metering device are as follows: 1) CT accurate grade is 0.2S grade; 2) PT accurate level is 0.2 level; 3) the electric energy meter has the following accuracy: 0.2S grade; the electric energy information is uploaded to a city and provincial metering center metering automation system main station required to be sent through an original electric energy acquisition device in the station. In addition, a direct-current power supply system of the protection device also needs to be connected and transformed with a standby feeder; the time synchronization system can meet the time synchronization requirements of two sets of protection devices; and finally, the deployment and the transformation of secondary equipment are mainly characterized in that the protection and current loop of a current transformer of a high-voltage equipment breaker and other equipment, such as safety equipment automatic switching, bus protection, fault recording, monitoring and measurement, and the like adopt the secondary current loop and are introduced into a related protection device or a metering device.
The newly added line protection device is also divided into two protection devices, namely a main protection device and a main protection device, so that different lines are arranged according to different protection devices in the transformation process, and 1) the main protection device and the second protection device are connected with a metering voltage switching device of a voltage parallel device (a voltage transformer parallel device). 2) And connecting the main protection device and the secondary protection device with the electric energy metering device. And protecting the main protection device and the secondary protection device in an alternating voltage loop: a protection voltage switching loop II, a measurement hand-cranking/remote control loop and a main secondary protection reclosing are connected in a same-phase manner; will protect the main protection device alternating voltage loop: and the first voltage switching loop and the main protection reclosure are synchronously connected. 3) The position node loop is connected to the position of a disconnecting link of the circuit breaker through a main protection device; and the position node loop is connected to the position of the disconnecting link of the circuit breaker through the main two protective devices. 4) Integrally switching a circuit breaker control circuit of the transformation station to a newly-built primary protection screen and a newly-built secondary protection screen; the device comprises a 220KV spare power automatic switching device, a 220KV main-first protection device, a main-second protection device, a bus protection-first device, a bus protection-second device and a 220KV measurement and control device. The first group and the second group of operating power supplies of the circuit breaker are connected with the direct current power supply for the station; the circuit breaker is connected to a main protection device after the functions of manual opening and closing, forced closing, synchronous closing, closing and hand jumping pass through a five-prevention logic circuit; a long-jump circuit of the 220KV bus protection I is led to the main protection device, then is connected to the main protection device, and finally is connected to the three-phase tripping pressure plate I; a long-jump circuit of the 220KV bus protection II is led to the main II protection device, then is connected to the main II protection device, and finally is connected to the three-phase tripping pressing plate II; the 220KV backup power automatic switching I and the 220KV backup power automatic switching II are connected in parallel, and are connected into a switching-on pressure plate; a trip loop of the 220KV spare power automatic switching device I is connected into a trip loop of the main protection device I; a 220KV spare power automatic switching device II tripping circuit is connected into a main protection device tripping circuit; a manual tripping locking loop of a 220KV spare power automatic switching device I is connected into a locking loop of an operation box of a main protection device; a manual tripping locking loop of the 220KV spare power automatic switching device II is connected to a locking loop of an operation box of the primary protection device; a single-phase trip circuit of the main protection device is divided into three paths and connected in series into a split-phase trip pressing plate; the single-phase tripping circuit of the main two-protection device is divided into three paths to be connected in series into the split-phase tripping pressure plate. 5) And the starting loops of the breaker failure protection and the bus protection of the main protection device and the main protection device are respectively connected into the main protection operation box. 6) Remote signaling and wave recording loop access: the main protection device, the main protection operation box, the main secondary protection device and the main secondary protection voltage switching device are connected to a 220KV line measurement and control device; the signal circuits of the main protection device, the main protection operation box and the main protection device are connected with the fault recording and broadcasting device. 7) The main protection device power supply, the first group of switching loop power supplies and the first group of operating loop power supplies are connected to the first direct-current power supply of the transformer substation. 8) And the main two-protection device power supply, the second group of switching loop power supply and the second group of operating loop power supply are connected to the second direct-current power supply of the transformer substation. 9) And the multiplexing interface device corresponds to a communication port loop of the opposite side transformer substation and is connected into the primary protection device and the secondary protection device. Other line deployment and reconstruction related to protection reconstruction are not arranged in a row, and reasonable operation can be carried out according to protection reconstruction in the existing system equipment upgrading. After the transformation is completed, relevant equipment is arranged in the transformation substation as permanent assets, and the laid optical cables and the like can be continuously recycled.
103, selecting a jump point outside the to-be-overhauled area of the target to-be-overhauled line, building a temporary jump line with the temporary debugging line at the jump point, and realizing optical fiber differential protection of the temporary jump line by adopting a newly-added line protection device.
It should be noted that, referring to fig. 3-4, assuming that the line to be repaired is a heavy-duty circuit, the line is modified as shown in fig. 3-4. Compared with the method that a plurality of jump points are selected, a maintenance area is bypassed, and then the power supply load is returned to the maintenance line in the prior art, the idea of other lines of power supply load transfer values in the embodiment has more universality and has low requirements on actual environment, and the specific expression is that at least two available jump points need to be found on the line to be maintained in the prior art for external connection and return connection; in addition, suitable jumper points of other lines are required to be found, the selection of the points has certain position requirements, and particularly, the suitable jumper points are difficult to select under the environment that the range of a maintenance area is large and the maintenance is difficult; the method in this embodiment does not require the power supply load to be connected back to the original line, so only one jumper is required, and it is not a requirement that the two loops are identical and complete, so that the implementation space is larger, and the applicability is stronger. In the built temporary jumper connection line, a target line to be overhauled is connected with a newly-added line protection device which is matched with a protection device in a temporary debugging transformer substation, so that a power supply load is introduced into a protection loop of the temporary debugging transformer substation; the stability of the temporary jumper connection line is better, so that sufficient maintenance time is provided for operators, and the normal operation of a power supply line is not influenced.
Further, selecting a jump point outside the to-be-overhauled area of the target to-be-overhauled line, and the method also comprises the following steps: and performing power failure treatment on the to-be-overhauled area of the target to-be-overhauled line and the corresponding secondary equipment.
It is understood that both the first protection device and the second protection device comprise two-way multiplexed fiber channels.
And step 104, after the power failure maintenance is finished, removing the temporary jumper connection line, and recovering the jumper wire of the protection line of the target line to be maintained.
It should be noted that after the maintenance is completed, the original circuit needs to be restored, the temporary jumper connection line needs to be removed, and the protection line of the line to be maintained is switched to the protection device, so that the newly added line protection device can still be kept and is idle.
The high-voltage line power failure maintenance method provided by the embodiment of the application effectively utilizes the same tower with multiple loops and adjacent transformer substations to realize temporary jumper connection, so that lines after jumper connection still go into operation according to a normal state, sufficient maintenance time is provided for operators, the power failure maintenance period is not influenced by the maintenance time limit, and the power failure maintenance period is only influenced by the time that the lines of the target lines to be maintained and the temporary debugging transformer substations have power failure simultaneously when the states are switched. The protection transformation is applied to power supply maintenance, and the technical problem that the power supply load cannot be completely transferred to other lines in the prior art is solved; once the temporary jumper connection line is built, the stability is strong; after the maintenance is finished, the jumper connection circuit is removed, and the original state of the jumper is recovered; the number of the related jump points is small, the jump points are easy to execute, the flexibility is strong, the requirements on actual circuit conditions and temporary debugging of the transformer substation are low, and the practicability is high. Therefore, the problem that the power failure maintenance work of the existing power grid transmission line is limited is solved; the technical problems of poor flexibility and low stability of arrangement of a power grid maintenance mode are solved.
To facilitate understanding, referring to fig. 2, the present application provides an embodiment of a high voltage line blackout repair system, comprising:
the selection module 201 is used for selecting a nearest temporary debugging line according to a target line to be overhauled, wherein the target line to be overhauled comprises a transformer substation to be transformed, the temporary debugging line comprises a temporary debugging transformer substation, the transformer substation to be transformed comprises a first protection device, and the temporary debugging transformer substation comprises a second protection device;
the transformation module 202 is used for adding a newly-added line protection device into the transformer substation to be transformed according to the protection device II, performing protection transformation to obtain a transformed transformer substation, wherein the newly-added line protection device is consistent with the protection device II;
the jumper module 203 is used for selecting a jumper point outside the to-be-overhauled area of the target to-be-overhauled line, building a temporary jumper line with the temporary debugging line at the jumper point, and realizing optical fiber differential protection on the temporary jumper line by adopting a newly-added line protection device;
and the recovery module 204 is configured to remove the temporary jumper connection line after the power failure maintenance is completed, and recover the jumper wire of the protection line of the target line to be maintained.
Further, the protection reconstruction comprises: the method comprises the steps of electric energy metering device transformation and secondary equipment deployment transformation.
Further, still include:
and the power failure module 205 is configured to perform power failure processing on the to-be-overhauled area of the target to-be-overhauled line and the corresponding secondary device.
The application also provides a high-voltage line power failure maintenance equipment, and the equipment includes treater and memory:
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is used for executing the high-voltage line power failure maintenance method in the embodiment of the method according to the instructions in the program codes.
The present application further provides a computer-readable storage medium for storing program code for executing the high-voltage line blackout repair method in the above method embodiment.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for executing all or part of the steps of the method described in the embodiments of the present application through a computer device (which may be a personal computer, a server, or a network device). And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A high-voltage line power failure maintenance method is characterized by comprising the following steps:
selecting a nearest temporary debugging line according to a target line to be overhauled, wherein the target line to be overhauled comprises a transformer substation to be modified, the temporary debugging line comprises a temporary debugging transformer substation, the transformer substation to be modified comprises a first protection device, and the temporary debugging transformer substation comprises a second protection device;
adding a newly-added line protection device into the transformer substation to be modified according to the second protection device, and performing protection modification to obtain a modified transformer substation, wherein the newly-added line protection device is consistent with the second protection device;
selecting a jump point outside the to-be-overhauled region of the target to-be-overhauled line, and building a temporary jump line with the temporary debugging line at the jump point, wherein the temporary jump line adopts the newly-added line protection device to realize optical fiber differential protection;
and after the power failure maintenance is finished, the temporary jumper connection line is dismantled, and the jumper wire of the protection line of the target line to be maintained is recovered.
2. The method of claim 1, wherein the protection retrofit comprises: the method comprises the steps of electric energy metering device transformation and secondary equipment deployment transformation.
3. The method for maintaining the high-voltage line in the power failure mode according to claim 1, wherein a jump point is selected outside the to-be-overhauled area of the target to-be-overhauled line, and the method comprises the following steps:
and performing power failure treatment on the to-be-overhauled area of the target to-be-overhauled line and the corresponding secondary equipment.
4. The high-voltage line blackout maintenance method according to claim 1, wherein the substation to be transformed comprises a heavy-load substation and a light-load substation;
correspondingly, the temporary debugging transformer substation comprises a heavy-load transformer substation and a light-load transformer substation.
5. The method of claim 1, wherein the first protection device and the second protection device each comprise a two-way multiplexed fiber channel.
6. A high voltage line power failure maintenance system, comprising:
the system comprises a selection module, a detection module and a control module, wherein the selection module is used for selecting a nearest temporary debugging line according to a target line to be overhauled, the target line to be overhauled comprises a transformer substation to be transformed, the temporary debugging line comprises a temporary debugging transformer substation, the transformer substation to be transformed comprises a first protection device, and the temporary debugging transformer substation comprises a second protection device;
the transformation module is used for adding a newly-added line protection device into the transformer substation to be transformed according to the second protection device to perform protection transformation to obtain a transformed transformer substation, and the newly-added line protection device is consistent with the second protection device;
the jumper connection module is used for selecting a jumper connection point outside the to-be-overhauled area of the target to-be-overhauled line, building a temporary jumper connection line with the temporary debugging line at the jumper connection point, and realizing optical fiber differential protection on the temporary jumper connection line by adopting the newly-added line protection device;
and the recovery module is used for removing the temporary jumper connection line and recovering the jumper wire of the protection line of the target line to be overhauled after the power failure overhaul is finished.
7. The high voltage line blackout repair system of claim 6, wherein the protection retrofit comprises: the method comprises the steps of electric energy metering device transformation and secondary equipment deployment transformation.
8. The high voltage line blackout repair system of claim 6, further comprising:
and the power failure module is used for performing power failure treatment on the to-be-overhauled area of the target to-be-overhauled line and the corresponding secondary equipment.
9. A high voltage line blackout repair apparatus, comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the high voltage line blackout repair method according to any one of claims 1 to 5 according to instructions in the program code.
10. A computer-readable storage medium for storing program code for performing the high voltage line blackout repair method of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011531521.1A CN112701609B (en) | 2020-12-22 | 2020-12-22 | High-voltage line power failure maintenance method, system and related device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011531521.1A CN112701609B (en) | 2020-12-22 | 2020-12-22 | High-voltage line power failure maintenance method, system and related device |
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