CN117411188B - Automatic operation method of hydropower station 500kV outgoing line route overhaul transfer operation monitoring system - Google Patents
Automatic operation method of hydropower station 500kV outgoing line route overhaul transfer operation monitoring system Download PDFInfo
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- CN117411188B CN117411188B CN202311647067.XA CN202311647067A CN117411188B CN 117411188 B CN117411188 B CN 117411188B CN 202311647067 A CN202311647067 A CN 202311647067A CN 117411188 B CN117411188 B CN 117411188B
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000012546 transfer Methods 0.000 title claims abstract description 11
- 238000002955 isolation Methods 0.000 claims description 17
- 238000012423 maintenance Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000011112 process operation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses an automatic operation method of a 500kV sending-out line by an overhaul transfer line monitoring system of a hydropower station, which is characterized in that the 500kV sending-out line by the overhaul transfer line monitoring system is divided into three flows, namely a 500kV line overhaul-to-cold standby flow, a 500kV line cold standby-to-hot standby flow and a 500kV line hot standby transfer line flow, so that the problems that the operation of a 500kV 3/2 main wiring system of the hydropower station in the prior art is generally carried out manually by operators, the operation steps are more, more operation locking and attention are carried out, and potential safety hazards exist are solved.
Description
Technical Field
The invention belongs to the technical field of hydropower station monitoring, and particularly relates to an automatic operation method of a 500kV hydropower station sending-out line maintenance and transportation monitoring system.
Background
The circuit in the 500kV 3/2 main wiring system of the hydropower station is an important device of the electric power system, plays a role of a junction for distributing electric energy, and is safe and stable in operation relative to the whole power grid. After the line power failure maintenance is finished, the current line overhaul operation is generally carried out manually by an operator, and the operation steps are more and more operation locking and attention points exist. Particularly, when the operation locking of the related equipment of the line is invalid or the personnel is misoperation, the system is possibly electrified and grounded or the equipment is damaged, hidden danger is brought to the safe and stable operation of the power grid, and the safe production is not facilitated;
Therefore, there is a need to design an automatic operation method for a 500kV outgoing line route maintenance and transportation operation monitoring system of a hydropower station to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides an automatic operation method for a 500kV hydropower station sending-out line by an overhaul transfer line monitoring system, which solves the problems that in the prior art, 500kV 3/2 main wiring system operation of a hydropower station is generally carried out manually by operators, the operation steps are more, more operation locking and attention are carried out, and potential safety hazards exist.
In order to realize the technical characteristics, the invention adopts the following technical scheme:
an automatic operation method of a hydropower station 500kV outgoing line route overhaul transfer operation monitoring system comprises the following steps:
S1, a 500kV line overhauling and cooling standby process is carried out:
s101, after receiving an operation flow starting command, detecting whether the operation conditions have the following conditions: the circuit is pressureless, the circuit breaker is protected normally, the circuit breaker control mode connected with the circuit is remote, no alarm is given, and the corresponding automatic device is normal, if the circuit breaker control mode is satisfied, the operation flow is carried out in the next step, if the circuit breaker control mode is not satisfied, the alarm is given, the operation flow is exited, and the current state is kept;
S102, pulling the grounding disconnecting link of the circuit bus, grounding disconnecting links at the two sides of the switch in the circuit, detecting that the switch and the side switch in the circuit are in a cold standby state, namely detecting that the state of the grounding disconnecting link of the circuit bus and the state of the grounding disconnecting link of the circuit breaker at the two sides of the circuit are at a disconnecting link position, if the state is not met, prompting that the operation fails and alarming to exit the operation flow, keeping the current state, and if all the conditions are met, performing the next step;
S103, opening the circuit-side grounding disconnecting link, detecting that the circuit-side grounding disconnecting link is normally opened, prompting operation failure and warning to exit the operation flow if the conditions are not met, keeping the current state, and carrying out the next step if all the conditions are met;
S2, a cold standby to hot standby process of the 500kV line routing:
S201, after receiving the operation flow starting command, detecting whether the operation conditions have the following conditions: after the 500kV line maintenance to cold standby process is finished, the line is pressureless, the control mode of the breaker and the isolation disconnecting link is in a remote place, namely, the control cabinet is alarmed, the breaker, the isolation disconnecting link and the grounding disconnecting link are in the disconnecting position, the line protection is normal, the breaker protection is normal, if all the conditions are met, the operation process carries out the next step, if not, the alarm is given, the operation process is exited, and the current state is kept;
s202, a disconnecting link and a line disconnecting link of a circuit breaker electrically connected with a line are pushed, the disconnecting link of the circuit breaker electrically connected with the line is detected to be closed, if the disconnecting link is not met, the operation failure is prompted, the operation flow is warned to be exited, the current state is maintained, and if all the conditions are met, the next step is carried out;
S3, a hot standby operation flow of the 500kV line routing:
S301, after receiving an operation flow starting command, detecting whether the operation conditions have the following conditions:
After the execution of the 500kV line cold standby to hot standby process, the control mode of the breaker and the isolation disconnecting link is that the control cabinet does not give an alarm in a remote place, the breaking position of the breaker, the closing position of the isolation disconnecting link and the breaking position of the grounding disconnecting link are correct, the line protection is normal, the breaker protection is normal, if the current state is met, the next step is carried out in the operation process, if the current state is not met, the alarm is given and the operation process is exited, and the current state is kept;
s302, a breaker electrically connected with a circuit is started, the normal closing of the breaker is detected, the circuit voltage and the frequency are normal, if the voltage are not met, the operation is prompted to fail, the operation process is warned to exit, and if all the conditions are met, the process is ended.
Preferably, in step S202, the operation sequence of the isolating switch can be set, and the isolating switch on the power supply side of the circuit breaker is pushed up preferentially, and then the isolating switch on the load side of the circuit breaker is pushed up, so as to meet the principle of power transmission from the power supply side to the load side.
Preferably, in S302, a first wire roadside switch and then an in-line switch may be set.
Preferably, the 500kV line overhauling and transferring operation monitoring system automatically operates the process of three stages, and the process of the later stage is blocked by the process of the former stage.
The automatic operation method of the hydropower station 500kV outgoing line route overhaul transfer operation monitoring system has the following beneficial effects:
According to the automatic operation flow of the hydropower station 500kV line route overhaul transfer operation monitoring system, the operation performed by operators in the whole process is changed into a one-key automatic operation flow, the system is prevented from being electrified to be grounded or the equipment is prevented from being damaged when equipment is locked to be invalid or the operators are in misoperation, the whole operation process can be ensured to be accurate, and the safety and stability of a power grid are ensured.
Drawings
FIG. 1 is a schematic diagram of 500kV 3/2 main wiring in the invention;
FIG. 2 is a schematic diagram showing the description of the names of 500kV 3/2 main wires in the invention;
FIG. 3 is a schematic diagram of the circuit routing maintenance to cold standby operation enable logic in the present invention;
FIG. 4 is a schematic diagram of the circuit routing cold standby to hot standby operation enable logic of the present invention;
FIG. 5 is a schematic diagram of the circuit routing hot standby transport operation enable logic of the present invention;
FIG. 6 is a flow chart of the line routing overhaul to cold standby operation of the present invention;
FIG. 7 is a flow chart of a circuit-switched cold-standby to hot-standby operation in accordance with the present invention;
Fig. 8 is a flow chart of the operation of the hot standby transport on the line in the present invention.
Detailed Description
Embodiment one:
As shown in fig. 1 to 8, the automatic operation method of the hydropower station 500kV outgoing line route overhaul transfer line monitoring system comprises the following steps:
S1, a 500kV line overhauling and cooling standby process is carried out:
s101, after receiving an operation flow starting command, detecting whether the operation conditions have the following conditions: the circuit is pressureless, the circuit breaker is protected normally, the circuit breaker control mode connected with the circuit is remote, no alarm is given, and the corresponding automatic device is normal, if the circuit breaker control mode is satisfied, the operation flow is carried out in the next step, if the circuit breaker control mode is not satisfied, the alarm is given, the operation flow is exited, and the current state is kept;
S102, pulling the grounding disconnecting link of the circuit bus, grounding disconnecting links at the two sides of the switch in the circuit, detecting that the switch and the side switch in the circuit are in a cold standby state, namely detecting that the state of the grounding disconnecting link of the circuit bus and the state of the grounding disconnecting link of the circuit breaker at the two sides of the circuit are at a disconnecting link position, if the state is not met, prompting that the operation fails and alarming to exit the operation flow, keeping the current state, and if all the conditions are met, performing the next step;
S103, opening the circuit-side grounding disconnecting link, detecting that the circuit-side grounding disconnecting link is normally opened, prompting operation failure and warning to exit the operation flow if the conditions are not met, keeping the current state, and carrying out the next step if all the conditions are met;
S2, a cold standby to hot standby process of the 500kV line routing:
S201, after receiving the operation flow starting command, detecting whether the operation conditions have the following conditions: after the 500kV line maintenance to cold standby process is finished, the line is pressureless, the control mode of the breaker and the isolation disconnecting link is in a remote place, namely, the control cabinet is alarmed, the breaker, the isolation disconnecting link and the grounding disconnecting link are in the disconnecting position, the line protection is normal, the breaker protection is normal, if all the conditions are met, the operation process carries out the next step, if not, the alarm is given, the operation process is exited, and the current state is kept;
s202, a disconnecting link and a line disconnecting link of a circuit breaker electrically connected with a line are pushed, the disconnecting link of the circuit breaker electrically connected with the line is detected to be closed, if the disconnecting link is not met, the operation failure is prompted, the operation flow is warned to be exited, the current state is maintained, and if all the conditions are met, the next step is carried out;
S3, a hot standby operation flow of the 500kV line routing:
S301, after receiving an operation flow starting command, detecting whether the operation conditions have the following conditions:
After the execution of the 500kV line cold standby to hot standby process, the control mode of the breaker and the isolation disconnecting link is that the control cabinet does not give an alarm in a remote place, the breaking position of the breaker, the closing position of the isolation disconnecting link and the breaking position of the grounding disconnecting link are correct, the line protection is normal, the breaker protection is normal, if the current state is met, the next step is carried out in the operation process, if the current state is not met, the alarm is given and the operation process is exited, and the current state is kept;
s302, a breaker electrically connected with a circuit is started, the normal closing of the breaker is detected, the circuit voltage and the frequency are normal, if the voltage are not met, the operation is prompted to fail, the operation process is warned to exit, and if all the conditions are met, the process is ended.
Preferably, in step S202, the operation sequence of the isolating switch can be set, and the isolating switch on the power supply side of the circuit breaker is pushed up preferentially, and then the isolating switch on the load side of the circuit breaker is pushed up, so as to meet the principle of power transmission from the power supply side to the load side.
Preferably, in S302, a first wire roadside switch and then an in-line switch may be set.
Embodiment two:
The automatic operation flow of the 500kV line overhauling and transferring operation monitoring system is designed into a flow with three stages in sequence, and the later stage flow is blocked by the former stage flow.
The method is characterized in that a button for operating a 500kV line by overhauling and transferring operation is designed in a computer monitoring system, three buttons of a line from overhauling to cold standby flow, a line from cold standby to hot standby flow and a line from hot standby and transferring operation flow are displayed after the buttons are turned on, the buttons are used for operators to select operation, and if conditions are not met, the flow alarms and exits from the operation flow, and the current state is maintained.
Meanwhile, a logic diagram for judging whether basic operation conditions of the first-stage process operation (line maintenance to cold standby) are met is designed in the computer monitoring system, and eight conditions including no line voltage, normal line protection, normal circuit breaker protection (corresponding switch number setting), circuit breaker and knife switch control mode are all met, namely, the eight conditions including remote control cabinet, normal on-site control cabinet, circuit breaker switch-off position, isolation knife switch-off position and grounding knife switch-on position are lightened, so that operators are prompted to operate by one key.
The logic diagram for judging whether the basic operation condition of the second stage process operation (line cold standby to hot standby) is met is designed in the computer monitoring system, and eight conditions including line no-voltage, breaker and disconnecting link control mode are far away, local control cabinet is normal, line protection is normal, breaker opening position, isolating disconnecting link opening position and grounding disconnecting link opening position are all met, and the logic diagram is lighted to prompt an operator to operate by one key.
The logic diagram for judging whether the basic operation condition of the third stage flow operation (line hot standby operation) is met is designed in the computer monitoring system, and the eight conditions of a breaker and a disconnecting link control mode, namely, a remote condition, a local control cabinet normal condition, a line protection normal condition, a breaker opening position, an isolation disconnecting link closing position and a grounding disconnecting link opening position are all met, so that an operator is prompted to operate by one key.
Claims (4)
1. The automatic operation method of the hydropower station 500kV outgoing line route overhaul transfer operation monitoring system is characterized by comprising the following steps of:
S1, a 500kV line overhauling and cooling standby process is carried out:
s101, after receiving an operation flow starting command, detecting whether the operation conditions have the following conditions: the circuit is pressureless, the circuit breaker is protected normally, the circuit breaker control mode connected with the circuit is remote, no alarm is given, and the corresponding automatic device is normal, if the circuit breaker control mode is satisfied, the operation flow is carried out in the next step, if the circuit breaker control mode is not satisfied, the alarm is given, the operation flow is exited, and the current state is kept;
S102, pulling the grounding disconnecting link of the circuit bus, grounding disconnecting links at the two sides of the switch in the circuit, detecting that the switch and the side switch in the circuit are in a cold standby state, namely detecting that the state of the grounding disconnecting link of the circuit bus and the state of the grounding disconnecting link of the circuit breaker at the two sides of the circuit are at a disconnecting link position, if the state is not met, prompting that the operation fails and alarming to exit the operation flow, keeping the current state, and if all the conditions are met, performing the next step;
S103, opening the circuit-side grounding disconnecting link, detecting that the circuit-side grounding disconnecting link is normally opened, prompting operation failure and warning to exit the operation flow if the conditions are not met, keeping the current state, and carrying out the next step if all the conditions are met;
S2, a cold standby to hot standby process of the 500kV line routing:
S201, after receiving the operation flow starting command, detecting whether the operation conditions have the following conditions: after the 500kV line maintenance to cold standby process is finished, the line is pressureless, the control mode of the breaker and the isolation disconnecting link is in a remote place, namely, the control cabinet is alarmed, the breaker, the isolation disconnecting link and the grounding disconnecting link are in the disconnecting position, the line protection is normal, the breaker protection is normal, if all the conditions are met, the operation process carries out the next step, if not, the alarm is given, the operation process is exited, and the current state is kept;
s202, a disconnecting link and a line disconnecting link of a circuit breaker electrically connected with a line are pushed, the disconnecting link of the circuit breaker electrically connected with the line is detected to be closed, if the disconnecting link is not met, the operation failure is prompted, the operation flow is warned to be exited, the current state is maintained, and if all the conditions are met, the next step is carried out;
S3, a hot standby operation flow of the 500kV line routing:
S301, after receiving an operation flow starting command, detecting whether the operation conditions have the following conditions:
After the execution of the 500kV line cold standby to hot standby process, the control mode of the breaker and the isolation disconnecting link is that the control cabinet does not give an alarm in a remote place, the breaking position of the breaker, the closing position of the isolation disconnecting link and the breaking position of the grounding disconnecting link are correct, the line protection is normal, the breaker protection is normal, if the current state is met, the next step is carried out in the operation process, if the current state is not met, the alarm is given and the operation process is exited, and the current state is kept;
s302, a breaker electrically connected with a circuit is started, the normal closing of the breaker is detected, the circuit voltage and the frequency are normal, if the voltage are not met, the operation is prompted to fail, the operation process is warned to exit, and if all the conditions are met, the process is ended.
2. The method for automatically operating a monitoring system for a 500kV power plant outgoing line routing maintenance and transportation operation according to claim 1, wherein in step S202, an operation sequence of the isolation knife switch is set, the isolation knife switch on the power supply side of the circuit breaker is pushed preferentially, and then the isolation knife switch on the load side of the circuit breaker is pushed, so as to meet the principle of power supply side-load side power transmission.
3. The method according to claim 1, wherein in S302, a line-side switch is set before a line-in-line switch.
4. The method for automatically operating a 500kV outgoing line routing maintenance and transportation monitoring system for a hydropower station according to claim 1, wherein the 500kV routing maintenance and transportation monitoring system automatically operates a three-stage process, and the later stage process is blocked by the former stage process.
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| CN202311647067.XA CN117411188B (en) | 2023-11-30 | 2023-11-30 | Automatic operation method of hydropower station 500kV outgoing line route overhaul transfer operation monitoring system |
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| CN202311647067.XA CN117411188B (en) | 2023-11-30 | 2023-11-30 | Automatic operation method of hydropower station 500kV outgoing line route overhaul transfer operation monitoring system |
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