CN115579849A

CN115579849A - Method, device and equipment for processing switch latching fault and storage medium

Info

Publication number: CN115579849A
Application number: CN202211294051.0A
Authority: CN
Inventors: 卢东旭; 徐大勇; 廖惠琴; 李鸿文; 魏可巍; 郭佳才; 陈伟德
Original assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-01-06

Abstract

The embodiment of the invention discloses a method, a device and equipment for processing a switch blocking fault and a storage medium. The processing method comprises the following steps: determining a locking reason of the switch; determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not; if not, determining a processing mode according to at least two of the locking reason, the bus operation mode and the switch type. According to the embodiment of the invention, different processing strategies are firstly determined according to different switch locking reasons, if the switch still does not recover to be normal, a new processing mode is determined according to at least two of the different locking reasons, different bus operation modes and different switch types, so that the problem of switch locking and switch opening faults can be effectively solved, different solving methods are adopted for different switch opening fault reasons, the normal operation of a power system is ensured, and the occurrence of serious accidents caused by the fact that the switch cannot be correctly opened due to switch locking is reduced.

Description

Method, device and equipment for processing switch blocking fault and storage medium

Technical Field

The embodiment of the invention relates to the technical field of power systems, in particular to a method, a device, equipment and a storage medium for processing a switch latching fault.

Background

The hydraulic pressure, the air pressure, the spring pressure, the oil level abnormality of the switch operating mechanism or the pressure abnormality of the switch body can cause the switch to be locked and separated, which is a common power equipment fault. After the switch is locked and opened, if the system fails, the switch can not operate correctly to trip, and can not break the fault current, so that the accident range can be enlarged. Therefore, after the switch is locked and opened, the switch must be isolated in time so as not to have serious consequences. The methods and techniques for isolating the latching switch are different for different main wiring modes.

Disclosure of Invention

The invention provides a method, a device, equipment and a storage medium for processing a switch latching fault, which are used for solving the problem of the switch latching fault and ensuring the normal operation of a power system.

In a first aspect, an embodiment of the present invention provides a method for processing a switch blocking fault, where the method includes:

determining a locking reason of the switch;

determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not;

if not, determining a processing mode according to at least two of the locking reason, the bus operation mode and the switch type.

Optionally, determining a processing policy according to the locking reason includes:

when the locking reason is that the pressure of the insulating medium is reduced, supplementing the insulating medium to enable the pressure of the insulating medium to meet a pressure rated value;

when the lockout reason is an operable fault, measures are taken to eliminate the operable fault.

Optionally, determining a processing manner according to at least two of the locking reason, the bus operation manner and the switch type includes:

when the locking reason is that the pressure of the insulating medium is reduced, determining a processing mode according to the type of the switch;

and when the locking reason is an operable fault, determining a processing mode according to the bus operation mode and the switch type.

Optionally, when the blocking reason is a reduction in pressure of the insulating medium, the determining a processing mode according to the switch type includes:

when the pressure of the locking source is reduced due to the insulating medium and the switch type is an outgoing switch, the rest switches in the bus where the locking switch is located and the disconnecting links on the two sides of the locking switch are controlled to be isolated and disconnected;

and when the locking reason is that the pressure of the insulating medium is reduced and the switch type is a bus-bar switch, all the outgoing line switches and the disconnecting links on the two sides of the locking switch in the transformer substation are controlled to be isolated and disconnected.

Optionally, when the lockout cause is an operable fault, determining a processing mode according to a bus operation mode and a switch type includes:

when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is an outgoing switch, the processing mode comprises one of the following three modes: controlling other switches in a bus where the latching switch is located and disconnecting switches on two sides of the latching switch in an isolation way; controlling a bypass switch to replace the latching switch and controlling the disconnecting switches on two sides of the latching switch to be isolated and disconnected in an equipotential manner; controlling other switches on the bus where the latching switch is located to be transferred to other buses and controlling a bus-tie switch in the double buses to be disconnected so as to isolate the latching switch;

when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is a bus-coupled switch, the processing mode comprises one of the following three modes: controlling the bus-coupled switch to be an uncontrollable switch and simultaneously adjusting the bus differential protection to be non-selective bus differential protection; controlling other switches on the bus where the locking switch is located to be transferred to other buses and controlling disconnecting switches on two sides of a bus-coupled switch in the double buses to be isolated and disconnected; controlling all the outgoing line switches and disconnecting switches on two sides of the locking switch in the transformer substation to be isolated and disconnected;

when the locking reason is an operable fault, the bus operation mode is double-bus split operation or single-bus operation, and the switch type is an outgoing switch, the other switches in the bus where the locking switch is located and the disconnecting links on the two sides of the locking switch are controlled to be isolated and disconnected.

Optionally, the processing method further includes:

when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is an outgoing switch or a bus-coupled switch, determining the priority of different processing modes;

when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is an outgoing switch, determining the priority of different processing modes, including:

determining whether a bypass switch override condition exists;

if so, controlling a bypass switch to replace the latching switch and controlling the disconnecting switches on the two sides of the latching switch to be isolated and disconnected in an equipotential manner;

if not, determining whether the reliability and the load loss of the transformer substation are influenced by controlling other switches in a bus where the latching switch is located and disconnecting of disconnecting switches on two sides of the latching switch;

if so, controlling the rest switches in the bus where the latching switch is located and disconnecting the disconnecting links on the two sides of the latching switch in an isolation way;

if not, controlling the rest switches on the bus where the latching switch is located to be transferred to other buses and controlling the bus tie switch in the double buses to be disconnected so as to isolate the latching switch;

when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is a bus tie switch, determining the priority of different processing modes, including:

determining whether the primary side and the secondary side of the transformer substation meet safe operation conditions;

if so, controlling the bus coupler switch to be an uncontrollable switch and simultaneously adjusting bus differential protection to be non-selective bus differential protection;

if not, determining whether disconnecting links on two sides of the bus coupler switch have the condition of pulling open the empty bus;

if so, controlling the rest switches on the bus where the locking switch is located to be transferred to other buses and controlling disconnecting switches on two sides of a bus connection switch in the double buses to be isolated and disconnected;

if not, all the outgoing line switches and the disconnecting switches on the two sides of the latching switch in the transformer substation are controlled to be disconnected in an isolated mode.

Optionally, before determining the processing mode according to at least two of the locking reason, the bus operation mode and the switch type, the method further includes:

and determining the operation mode of the bus.

In a second aspect, an embodiment of the present invention further provides a processing apparatus for a switch lockout fault, where the processing apparatus includes:

the locking reason determining module is used for determining the locking reason of the switch;

the processing strategy determining module is used for determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not;

and the processing mode determining module is used for determining the processing mode according to at least two of the locking reason, the bus running mode and the switch type when the switch does not return to normal.

In a third aspect, an embodiment of the present invention further provides an electronic device, where the electronic device includes:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein, the first and the second end of the pipe are connected with each other,

the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform a method of handling a switch lockout fault according to any of the embodiments of the present invention.

In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where computer instructions are stored, and the computer instructions are configured to, when executed, cause a processor to implement the method for handling a switch blocking fault according to any embodiment of the present invention.

The embodiment of the invention provides a method, a device, equipment and a storage medium for processing a switch locking fault, which comprises the steps of firstly determining the locking reason of a switch; then determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not; and finally, if the switch is not recovered to be normal, determining a processing mode according to at least two of the locking reason, the bus running mode and the switch type. According to the embodiment of the invention, different processing strategies are determined aiming at different switch locking reasons, if the switch still does not recover to be normal, a new processing mode is determined according to at least two of different locking reasons, different bus operation modes and different switch types, so that the problem of switch locking and opening faults can be effectively solved, different solving methods are adopted for different opening fault reasons, the normal operation of a power system is ensured, and the occurrence of serious accidents caused by the fact that the switch cannot be correctly opened due to switch locking is reduced.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flow chart of a method for handling a lockout fault of a switch according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of another method for handling a latch-up failure of a switch according to an embodiment of the present invention;

FIG. 3 is a schematic flow chart of another method for handling a latch-up failure of a switch according to an embodiment of the present invention;

FIG. 4 is a schematic flow chart of another method for handling a latch-up failure of a switch according to an embodiment of the present invention;

FIG. 5 is a schematic flow chart diagram illustrating another exemplary method for handling a switch lockout fault according to an embodiment of the present invention;

fig. 6 is a schematic flow chart of an input mode of a 220kV bus according to an embodiment of the present invention;

FIG. 7 is a schematic circuit diagram of a connection mode of a 220kV bus according to an embodiment of the present invention;

FIG. 8 is a flow chart illustrating a method for handling a switch lockout fault according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a device for processing a switch blocking fault according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present invention, 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic flowchart of a method for processing a switch latching fault according to an embodiment of the present invention, where the embodiment is applicable to a situation where a system fails and a switch latch that needs to perform an isolation function cannot complete a switching-off operation, and the method may be executed by a processing device for a switch latching fault, where the processing device may be implemented in the form of hardware and/or software, and the processing device may be configured in a control board. As shown in fig. 1, the processing method includes:

and S110, determining the locking reason of the switch.

When a power system fails, if the switch cannot be tripped by correct action and cannot cut off fault current, serious consequences can be caused, the reason of the opening fault of the locking switch is timely checked and determined, and the accident range is prevented from being enlarged when the fault happens.

And S120, determining a processing strategy according to the locking reason and judging whether the switch is normal or not.

Aiming at the conditions of different wiring modes, switches at different positions, switch opening faults caused by different reasons and the like, a processing strategy which is suitable for the locking reasons needs to be determined, the locking and opening faults of the switches are solved by adopting the processing strategy, and finally whether the switches are recovered to be normal or not and whether the switches can be correctly opened or not is judged.

And S130, if not, determining a processing mode according to at least two of the locking reason, the bus operation mode and the switch type.

If after some handling strategy the switch still cannot be correctly opened when a fault occurs, a new handling mode needs to be determined according to at least two of the locking reason, the bus operating mode and the switch type.

The embodiment of the invention provides a method for processing a switch blocking fault, which comprises the steps of firstly determining the blocking reason of a switch; then determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not; and finally, if the switch is not recovered to be normal, determining a processing mode according to at least two of the locking reason, the bus running mode and the switch type. According to the embodiment of the invention, different processing strategies are determined aiming at different switch locking reasons, if the switch still does not recover to be normal, a new processing mode is determined according to at least two of different locking reasons, different bus operation modes and different switch types, so that the problem of switch locking and opening faults can be effectively solved, different solving methods are adopted for different opening fault reasons, the normal operation of a power system is ensured, and the occurrence of serious accidents caused by the fact that the switch cannot be correctly opened due to switch locking is reduced.

Optionally, determining a processing policy according to the locking reason includes: when the locking reason is that the pressure of the insulating medium is reduced, supplementing the insulating medium so that the pressure of the insulating medium meets a pressure rated value; when the locking reason is operable failure, measures are taken to eliminate the operable failure.

When the pressure of the insulating medium is reduced, the fault of locking and opening of the switch can be caused, and at the moment, the live gas supplement should be tried to the insulating medium on site, wherein the insulating medium is generally SF ₆ A gas. In a state where the electrical equipment is not powered on, the pressure of the insulating medium of the electrical equipment is supplemented to a rated value, which is a rated value of the pressure of the insulating medium of each electrical equipment. And if the switch locking can be correctly opened after the electrical equipment is subjected to the operation of electrified air supplement, the processing strategy is finished. Wherein, when the locking reason is operable failure, exemplarily, operableThe faults comprise faults which can be processed on site without power failure of the switch, such as operating mechanism abnormity, control loop faults, operation faults caused by false triggering, faults caused by interference signals and the like, the reasons for the faults can be eliminated on site without arranging other safety measures, and the switch can be locked to recover the correct brake-separating operation, so that the processing strategy is finished.

Fig. 2 is a schematic flow chart of another method for processing a switch blocking fault according to an embodiment of the present invention, and this embodiment is refined based on the above embodiments, and specifically develops the content of determining the processing manner according to at least two of the blocking reason, the bus operating manner, and the switch type. In this embodiment, as shown in fig. 2, the processing method includes:

and S210, determining the locking reason of the switch.

And S220, determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not.

And S230, when the pressure of the insulating medium is reduced due to the locking reason, determining a processing mode according to the switch type.

Determining a processing strategy according to the locking reason, supplementing the insulating medium to enable the pressure of the insulating medium to meet a pressure rated value when the pressure of the insulating medium is reduced due to the locking reason, then judging whether the switch is recovered to be normal or not, if the switch is not recovered to be normal, the opening operation cannot be completed correctly, and determining a new processing mode according to the type of the switch.

And S240, when the locking reason is an operable fault, determining a processing mode according to the bus operation mode and the switch type.

Determining a processing strategy according to a locking reason, when the locking reason is an operable fault, taking measures to eliminate the operable fault, then judging whether a switch is recovered to be normal, if the switch is not recovered to be normal, the opening operation cannot be completed correctly, and determining a new processing mode according to a bus running mode and a switch type.

The embodiment of the invention specifies the application condition of determining the processing mode according to at least two of the locking reason, the bus running mode and the switch type, determines the processing strategy according to the locking reason, and implements the operation of electrified gas supplement or simple field operation, the locking and the opening of the switch still have faults, the switch does not recover to be normal, determines a new processing mode according to the switch type when the pressure of the insulating medium is reduced as the locking reason, and determines a new processing mode according to the bus running mode and the switch type when the locking reason is the operable fault. The embodiment of the invention provides a new processing mode aiming at the condition that the processing strategy can not solve the locking and opening faults of the switch, and effectively solves the problem of the locking and opening faults of the switch by different solving methods according to different locking reasons, bus operation modes and switch types.

Fig. 3 is a schematic flow chart of another method for processing a switch latching fault according to an embodiment of the present invention, which is detailed based on the above embodiment, and specifically, when the latching reason is that the pressure of the insulating medium is reduced, the content of the processing mode determined according to the switch type is expanded. In this embodiment, as shown in fig. 3, the processing method includes:

and S310, determining the locking reason of the switch.

And S320, determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not.

S330, when the pressure of the locking reason is reduced due to the insulating medium and the switch type is an outgoing switch, the rest switches in the bus where the locking switch is located and the disconnecting links on the two sides of the locking switch are controlled to be isolated and disconnected.

The outgoing switch comprises a parallel operation double-bus outgoing switch, a single-bus outgoing switch and a split operation double-bus outgoing switch. When the locking reason is that the pressure of the insulating medium is reduced, and after the operation with gas and electricity supplement is performed, the outgoing line switch still cannot correctly complete the operation of opening the brake, the rest switches in the bus where the locking switch with the fault is located need to be disconnected, and the knife switches on the two sides of the locking switch with the fault are pulled open, so that the locking switch with the fault has the effect of isolation.

And S340, when the locking reason is that the pressure of the insulating medium is reduced and the switch type is a bus-coupled switch, controlling all outgoing switches in the transformer substation and disconnecting switches on two sides of the locking switch to be isolated and disconnected.

The bus coupler switch comprises a double-bus coupler switch which operates in parallel. When the locking reason is that the pressure of the insulating medium is reduced, and after the operation with gas and electricity supplement is carried out, the bus-bar switch still cannot correctly complete the operation of opening the switch, all the outgoing switches in the transformer substation need to be disconnected, and the knife switches on two sides of the locking switch with the fault are pulled open, so that the locking switch with the fault has an isolation effect.

And S350, when the locking reason is an operable fault, determining a processing mode according to the bus running mode and the switch type.

The embodiment of the invention specifies that when the locking reason is that the pressure of an insulating medium is reduced, different processing modes are determined according to different switch types, when the switch type is an outgoing switch, the other switches in a bus where the locking switch is located and the disconnecting switches on two sides of the locking switch are controlled to be disconnected in an isolation mode, and when the switch type is a bus-coupled switch, all outgoing switches in a transformer substation and the disconnecting switches on two sides of the locking switch are controlled to be disconnected in an isolation mode. According to the embodiment of the invention, aiming at different switch types, different processing modes are adopted to solve the problem that the switch locking cannot be normally opened, so that various conditions of the switch locking and opening faults caused by the reduction of the pressure of the insulating medium are effectively processed, and the normal operation of a power system is ensured.

Fig. 4 is a schematic flow chart of another method for processing a switch latching fault according to an embodiment of the present invention, which is refined on the basis of the above embodiment, and specifically, when the latching reason is an operable fault, the contents of the processing mode determined according to the bus operation mode and the switch type are expanded. In this embodiment, as shown in fig. 4, the processing method includes:

and S410, determining the locking reason of the switch.

And S420, determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not.

And S430, when the pressure of the insulating medium is reduced due to the locking reason, determining a processing mode according to the switch type.

S440, when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is an outgoing switch, the processing mode comprises one of the following three modes: the other switches in the bus where the latching switch is located and the knife switches on the two sides of the latching switch are controlled to be isolated and disconnected; the bypass switch is controlled to replace a locking switch and the disconnecting link at the two sides of the locking switch is controlled to be disconnected in an equipotential manner; and controlling the rest switches on the bus where the latching switch is positioned to be transferred to other buses and controlling the bus tie switch in the double buses to be disconnected so as to isolate the latching switch.

When the locking reason is an operable fault, after some simple measures which can be carried out on site are taken, the double-bus outgoing line switch which operates in parallel still cannot correctly complete the operation of opening the brake, a new processing mode needs to be selected, and the following three processing modes exist. First, the rest switches in the bus where the faulty latching switch is located need to be disconnected, and the knife switches on the two sides of the faulty latching switch are pulled open, so that the faulty latching switch plays an isolating role. And secondly, the bypass switch is adopted to replace the fault lockout switch to operate, and under the condition of equipotential, the knife switches on two sides of the fault lockout switch are pulled open, so that the fault lockout switch plays a role in isolation. And thirdly, transferring the rest switches on the bus where the fault lockout switch is positioned to other buses, and disconnecting the bus-coupled switches on the double buses running in parallel to enable the fault lockout switch to play an isolating role.

S450, when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is a bus-coupled switch, the processing mode comprises one of the following three modes: controlling the bus coupler switch to be an uncontrollable switch and simultaneously adjusting the bus differential protection to be non-selective bus differential protection; other switches on the bus where the locking switch is located are controlled to be transferred to other buses, and disconnecting switches on two sides of a bus-coupled switch in the double buses are controlled to be disconnected in an isolation mode; and controlling all outgoing switches and disconnecting switches on two sides of the locking switch in the transformer substation.

When the locking reason is an operable fault, after some simple measures which can be carried out on site are taken, the double-bus-bar switch which is operated in parallel still cannot correctly complete the operation of opening the brake, a new processing mode needs to be selected, and the following three processing modes exist. The first method is that a failed bus coupler switch is set as a dead switch, so that the bus coupler switch exits from a power supply of a control loop, under the condition, the bus coupler switch cannot be remotely controlled, the protection action cannot cause tripping action of the bus coupler switch, meanwhile, the bus differential protection of the failed bus coupler switch is adjusted to be non-selective bus differential protection, the non-selective bus differential protection means that after one bus fails in the double-bus operation process, two buses are directly tripped and removed at the same time, when the bus coupler switch of the parallelly operated double buses has a separating brake fault, the bus coupler switch cannot act, two buses connected with the failed bus coupler switch stop operating, and the failed dead switch plays a role in isolating. And secondly, transferring other switches on the bus where the fault latching switch is located to other buses, and then pulling open the disconnecting links on two sides of the bus-coupled switch on the double buses running in parallel so that the fault latching switch plays a role in isolation. And thirdly, disconnecting all outgoing switches in the transformer substation, and then pulling off the disconnecting links on two sides of the fault lockout switch to isolate the fault lockout switch.

And S460, when the locking reason is an operable fault, the bus operation mode is double-bus split operation or single-bus operation, and the switch type is an outgoing switch, controlling the rest switches in the bus where the locking switch is located and disconnecting switches on two sides of the locking switch to be isolated and disconnected.

When the lockout reason is an operable fault, after some simple and field-available measures are taken, the operation of separating the switches can not be completed correctly by the double-bus outlet switch or the single-bus outlet switch in the split-row operation, and then a new processing mode needs to be selected, the rest switches in the bus where the lockout switch in the fault is located can be disconnected, and then the knife switches on the two sides of the lockout switch in the fault are pulled open, so that the lockout switch in the fault plays a role in isolation.

The embodiment of the invention particularly describes that when the locking reason is an operable fault, different processing modes are determined according to different bus operation modes and different switch types, and the processing modes can be divided into three conditions: when the bus operation mode is double-bus parallel operation and the switch type is an outgoing switch; when the bus operation mode is double-bus parallel operation and the switch type is a bus-coupled switch; when the bus operation mode is double-bus split operation or single-bus operation and the switch type is an outgoing switch. The embodiment of the invention provides different processing modes for each situation, effectively solves the problem of the locking and the opening of the switch, and ensures the normal operation of the power system.

Optionally, the processing method further includes: when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is an outgoing switch or a bus-coupled switch, determining the priority of different processing modes; when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is an outgoing switch, determining the priority of different processing modes, including: determining whether a bypass switch override condition exists; if so, controlling the bypass switch to replace the latching switch and controlling the disconnecting switches on the two sides of the latching switch to be isolated and disconnected in an equipotential manner; if not, determining whether the reliability and the load loss of the transformer substation are influenced by controlling other switches in a bus where the latching switch is located and disconnecting of knife switches on two sides of the latching switch; if so, controlling the rest switches in the bus where the latching switch is located and disconnecting the disconnecting links at the two sides of the latching switch; if not, controlling other switches on the bus where the latching switch is located to be transferred to other buses and controlling the bus-tie switch in the double buses to be disconnected so as to isolate the latching switch; when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is a bus-coupled switch, determining the priority of different processing modes, including: determining whether the primary side and the secondary side of the transformer substation meet safe operation conditions or not; if so, controlling the bus coupler switch to be an uncontrollable switch and simultaneously adjusting the bus differential protection to be non-selective bus differential protection; if not, determining whether disconnecting links on two sides of the bus coupler switch have the condition of pulling open the empty bus; if so, controlling other switches on the bus where the locking switch is located to be transferred to other buses and controlling disconnecting switches on two sides of a bus tie switch in the double buses to be isolated and disconnected; if not, all the outgoing switches and the disconnecting switches on the two sides of the locking switch in the transformer substation are controlled to be disconnected in an isolated mode.

And when the locking reason is an operable fault, determining a processing mode according to the bus operation mode and the switch type. And when the bus operation mode is double-bus parallel operation and the switch type is an outgoing switch or a bus-coupled switch, the priority of the different processing modes needs to be determined. When the lockout reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is an outgoing switch, determining the priority of different processing modes, determining whether a bypass switch exists or not, and if the lockout switch exists, which can isolate the fault in an equipotential manner, adopting a second processing mode; if the replacing condition of the bypass switch is not met, determining whether the first processing mode causes obvious reduction of the system reliability of the transformer substation and the influence of load loss, and if the obvious reduction of the reliability and the influence of the load loss are not caused, adopting the first processing mode; otherwise, when the first processing mode and the second processing mode do not have the adoption condition, adopting a third processing mode. When the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is a bus-coupled switch, determining the priority of different processing modes, firstly determining whether the primary side and the secondary side of the transformer substation meet safe operation conditions, and if the primary side and the secondary side of the transformer substation meet the safe operation conditions, adopting a first processing mode; if the primary side and the secondary side of the transformer substation do not meet the safe operation condition, whether disconnecting switches on two sides of the bus tie switch have the condition of opening the empty bus needs to be determined, and if the disconnecting switches on the two sides of the bus tie switch have the condition of opening the empty bus, a second processing mode is adopted; otherwise, when the first processing mode and the second processing mode do not have the adoption condition, adopting a third processing mode.

Fig. 5 is a schematic flow chart of another method for processing a blocking fault of a switch according to an embodiment of the present invention, which is supplemented with the above embodiment, and specifically adds that the operation mode of the bus needs to be determined before determining the processing mode according to at least two of the blocking reason, the operation mode of the bus, and the switch type. In this embodiment, as shown in fig. 5, the processing method includes:

and S510, determining the locking reason of the switch.

S520, determining a processing strategy according to the locking reason and judging whether the switch is normal or not.

And S530, determining a bus operation mode.

The embodiment of the invention aims at solving the opening fault of the switch lock aiming at different operation modes of the 220kV bus, the bus operation mode needs to be determined before determining the processing mode according to at least two of the locking reason, the bus operation mode and the switch type, different bus operation modes correspond to different processing modes, relevant operations are standardized, the fault of the switch lock opening can be effectively solved, and the normal operation of a power system is ensured.

Specifically, as shown in fig. 6, fig. 6 is a schematic flow chart of an input mode of a 220kV bus provided in an embodiment of the present invention, a power transmission operation mode of the 220kV bus of a substation is determined according to whether there is a buscouple switch, if there is no buscouple switch, the bus operates in a single bus, if there is a buscouple switch, it is also necessary to determine whether the buscouple switch is in an on position, if the buscouple switch is in an on position, the bus operates in parallel with two buses, and if the buscouple switch is in an off position, the bus operates in a split-column manner with two buses. Fig. 7 is a schematic circuit diagram of a wiring manner of a 220kV bus according to an embodiment of the present invention, as shown in fig. 7, a 220kV power system has two parallel incoming lines, a buscouple switch is installed between the two buses, when the bus is in normal operation, each circuit is connected to two groups of buses through a circuit breaker and two groups of disconnectors, the circuit can selectively connect any one of the buses according to requirements, when the buscouple switch is in a closing position, the 220kV power system is in a double-bus parallel operation, when the buscouple switch is in a separating position, the 220kV power system is in a double-bus split operation, in addition, no buscouple switch is installed between the two operating buses of the 220kV power system, and the 220kV power system is in a single-bus operation.

And S540, if not, determining a processing mode according to at least two of the locking reason, the bus operation mode and the switch type.

Before determining the processing mode according to at least two of the locking reason, the bus operation mode and the switch type, the embodiment of the invention also needs to determine the bus operation mode, which respectively comprises the following steps: single bus operation, double bus parallel operation and double bus split operation. According to the embodiment of the invention, different bus operation modes are distinguished by judging the operation modes of the buses, and the processing methods corresponding to the different bus operation modes are different, so that the fault of locking and opening of the switch can be effectively solved, and the normal operation of a power system is ensured.

In addition, the following are exemplified as the implementation steps of the method for processing the latching fault of the switch in the embodiment of the present invention in a specific implementation process, fig. 8 is a schematic flow chart of the method for processing the latching fault of the switch provided in the embodiment of the present invention, and as shown in fig. 8, the method for processing the latching fault of the switch may include:

when a power system fails and an adjacent locking switch has a switching-off fault, the locking reason needs to be judged, so that the locking switch can correctly perform switching-off operation, normal operation of the power system is ensured, and the expansion of an accident range caused by untimely power failure is reduced.

As shown in fig. 8, when the pressure of the insulating medium is reduced due to the reason of locking, an air supplement operation can be performed on the insulating medium on site to make the pressure of the insulating medium meet the pressure rating of the power equipment, and then it is determined whether the fault switch is recovered to be normal, whether the opening operation can be completed correctly, and if the fault switch is recovered to be normal, the procedure is completed. If the faulty switch is not recovered to normal and the opening operation cannot be completed correctly, a new processing mode needs to be determined according to the type of the switch. For the fault parallel operation double-bus outgoing line switch, the fault single-bus outgoing line switch and the fault split operation double-bus outgoing line switch, the processing mode is to control the rest switches in the bus where the latching switch is located and disconnecting switches on two sides of the latching switch in an isolation way. For the fault parallel operation double-bus-bar coupler switch, the processing mode is to control all outgoing switches and disconnecting switches on two sides of a locking switch in the transformer substation to be isolated and disconnected.

As shown in fig. 8, when the locking reason is an operable fault, measures may be taken on site to try to eliminate the abnormal condition of the switch mechanism or the fault of the control circuit, and after the abnormal condition or the fault is eliminated, it is then determined whether the faulty switch is recovered to be normal, whether the opening operation can be completed correctly, and if the faulty switch is recovered to be normal, the procedure is completed. If the fault switch is not recovered to be normal and the opening operation cannot be completed correctly, a new processing mode needs to be determined according to the bus operation mode and the switch type. For the fault parallel operation double-bus outgoing line switch, three treatment modes are provided, and the method 1 is to control the isolation disconnection of other switches in a bus where a latching switch is located and knife switches on two sides of the latching switch; the method 2 is to control the bypass switch to replace a latching switch and equipotentially control disconnecting switches on two sides of the latching switch to be isolated and disconnected; and 3, controlling the rest switches on the bus where the latching switch is located to be transferred to other buses and controlling the bus tie switch in the double buses to be disconnected so as to isolate the latching switch. When the bypass switch has the bypass condition, (1) the method 2 is preferentially adopted; (2) If the disconnecting link on the two sides of the locking switch is isolated and disconnected, the obvious reduction of the system reliability and the load loss can not be caused, the method 1 is adopted; (3) If neither method 1 nor method 2 is conditional, method 3 is employed. For a failed parallel operation double-bus-bar coupler switch, three processing modes are provided, namely, a method 1 is used for controlling the bus-bar coupler switch to be an uncontrollable switch and simultaneously adjusting bus differential protection to be non-selective bus differential protection; the method 2 comprises the steps of controlling other switches on the bus where the latching switch is located to be transferred to other buses and controlling disconnecting switches on two sides of a bus coupling switch in the double buses to be isolated and disconnected; and 3, controlling all outgoing line switches and disconnecting switches on two sides of the locking switch in the transformer substation to be isolated and disconnected. It should be noted that (1) if the primary side and the secondary side of the transformer substation are matched to meet the safe operation condition, the method 1 is preferentially adopted; (2) When the disconnecting links on the two sides of the bus-coupled disconnecting link have the condition of pulling open the empty bus, the method 2 is adopted; (3) If neither method 1 nor method 2 is conditional, method 3 is employed. For the fault split-column operation double-bus outgoing line switch and the fault single-bus outgoing line switch, the rest switches in the bus where the latching switch is located and the disconnecting links on the two sides of the latching switch are controlled to be isolated and disconnected.

Based on the same inventive concept, the embodiment of the invention also provides a processing device for the switch blocking fault. Fig. 9 is a schematic structural diagram of a processing apparatus for a latch-up fault of a switch according to an embodiment of the present invention, and as shown in fig. 9, the processing apparatus for a latch-up fault of a switch according to an embodiment of the present invention is applicable to a processing operation process for a latch-up fault of a switch, and the processing apparatus may be implemented in a form of hardware and/or software, and the processing apparatus may be configured on a control board.

As shown in fig. 9, the processing apparatus includes: a locking reason determining module 61 for determining the locking reason of the switch; a processing strategy determining module 62, configured to determine a processing strategy according to the locking reason and determine whether the switch returns to normal; and a processing mode determining module 63, configured to determine a processing mode according to at least two of the locking reason, the bus operation mode, and the switch type when the switch does not return to normal.

According to the processing method, the processing device, the equipment and the storage medium for the switch latching fault provided by the embodiment of the invention, the processing method comprises the following steps: firstly, determining the locking reason of the switch; then determining a processing strategy according to the locking reason and judging whether the switch is recovered to be normal or not; and finally, if the switch is not recovered to be normal, determining a processing mode according to at least two of the locking reason, the bus running mode and the switch type. According to the embodiment of the invention, different processing strategies are firstly determined according to different switch locking reasons, if the switch still does not recover to be normal, a new processing mode is determined according to at least two of the different locking reasons, different bus operation modes and different switch types, so that the problem of switch locking and switch opening faults can be effectively solved, different solving methods are adopted for different switch opening fault reasons, the normal operation of a power system is ensured, and the occurrence of serious accidents caused by the fact that the switch cannot be correctly opened due to switch locking is reduced.

Based on the above technical solution, the processing strategy determining module 62 specifically includes an insulation medium adjusting unit and an operation troubleshooting unit, the insulation medium adjusting unit is configured to supplement the insulation medium to enable the pressure of the insulation medium to meet a pressure rated value when the locking reason is that the pressure of the insulation medium is reduced, and the operation troubleshooting unit is configured to take measures to troubleshoot the operable fault when the locking reason is the operable fault. The processing mode determining module 63 specifically includes a first mode determining unit configured to determine the processing mode according to the switch type when the pressure of the insulating medium is reduced due to the cause of the lock, and a second mode determining unit configured to determine the processing mode according to the bus operation mode and the switch type when the cause of the lock is an operable failure.

In an embodiment, the first mode determining unit specifically includes an outgoing switch subunit and a bus tie switch subunit, where the outgoing switch subunit is configured to control, when the locking reason is that the pressure of the insulating medium is reduced and the switch type is an outgoing switch, the remaining switches in the bus where the locking switch is located and the switches on both sides of the locking switch to be isolated and disconnected, and the bus tie switch subunit is configured to control, when the locking reason is that the pressure of the insulating medium is reduced and the switch type is a bus tie switch, all outgoing switches in the substation and the switches on both sides of the locking switch to be isolated and disconnected.

In another embodiment, the second mode determining unit specifically includes a first determining subunit, a second determining subunit and a third determining subunit, where the first determining subunit is configured to, when the lockout reason is an operable fault, and the bus operation mode is dual-bus parallel operation, and the switch type is an outgoing switch, perform a processing mode including one of: the other switches in the bus where the latching switch is located and the knife switches on the two sides of the latching switch are controlled to be isolated and disconnected; the bypass switch is controlled to replace a locking switch and the disconnecting link at the two sides of the locking switch is controlled to be disconnected in an equipotential manner; the other switches on the bus where the latching switch is located are controlled to be transferred to other buses and the bus-coupled switch in the double buses is controlled to be switched off so as to isolate the latching switch, the second determining subunit is used for determining that the latching reason is an operable fault, the bus operation mode is that the double buses operate in parallel, and when the switch type is the bus-coupled switch, the processing mode comprises one of the following three modes: controlling the bus-coupled switch to be an uncontrollable switch and simultaneously adjusting the bus differential protection to be non-selective bus differential protection; other switches on the bus where the locking switch is located are controlled to be transferred to other buses, and disconnecting switches on two sides of a bus-coupled switch in the double buses are controlled to be disconnected in an isolation mode; and the third determining subunit is used for controlling the rest switches in the bus where the latching switch is located and the disconnecting switches on the two sides of the latching switch to be isolated and disconnected when the latching reason is an operable fault, the bus operation mode is double-bus split operation or single-bus operation, and the switch type is the outgoing switch.

In another embodiment, the processing device for the switch latching fault further comprises an input mode determining module for determining the bus operation mode.

The processing device for the switch blocking fault provided by the embodiment of the invention can execute the processing method for the switch blocking fault provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 10, the electronic device according to the embodiment of the present invention includes: at least one processor 71, and a memory 72 communicatively coupled to the at least one processor 71; wherein the memory 72 stores a computer program executable by the at least one processor 71, the computer program being executable by the at least one processor 71 to enable the at least one processor 71 to perform the power outage control method according to any one of the embodiments of the present invention.

The apparatus may further include: an input device 73 and an output device 74.

The processor 71, the memory 72, the input device 73 and the output device 74 in the apparatus may be connected by a bus or other means, and the connection by a bus is exemplified in fig. 10.

The memory 72 of the device is used as a readable storage medium for storing one or more programs, which may be software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the cooking control method of the steaming and baking device provided in an embodiment of the present invention (for example, the module in the processing apparatus for the switch latch fault shown in fig. 9 includes a latch reason determining module 61 for determining a latch reason of the switch, a processing policy determining module 62 for determining a processing policy according to the latch reason and determining whether the switch is recovered to be normal, and a processing manner determining module 63 for determining a processing manner according to at least two of the latch reason, the bus running manner, and the switch type when the switch is not recovered to be normal). The processor 71 executes various functional applications and data processing of the terminal device by running software programs, instructions and modules stored in the memory 72, that is, implements the method for processing the switch latching fault in the above method embodiment.

The memory 72 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the device, and the like. Further, the memory 72 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 72 may further include memory located remotely from the processor 71, which may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 73 may be used to receive input numeric or character information and generate key signal inputs relating to user settings and function control of the apparatus. The output device 74 may include a display device such as a display screen.

And when the one or more programs included in the above-described apparatus are executed by the one or more processors 71, the programs perform the following operations:

determining a locking reason of the switch;

An embodiment of the present invention further provides a readable storage medium, on which a computer program is stored, the program being used for executing a processing method of a switch lockout fault when executed by a processor, the processing method including:

determining a locking reason of the switch;

if not, determining a processing mode according to at least two of the locking reason, the bus running mode and the switch type.

Optionally, the program may be further configured to perform a method for handling a switch blocking fault according to any embodiment of the present invention when executed by a processor.

Computer storage media for embodiments of the present invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a readable storage medium. Readable storage media may take many forms, including but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), a flash Memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. A readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take a variety of forms, including, but not limited to: an electromagnetic signal, an optical signal, or any suitable combination of the foregoing. A computer readable signal medium may be any computer readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, radio Frequency (RF), etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including, but not limited to, a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired result of the technical solution of the present invention can be achieved.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for handling a switch latch-up fault, comprising:

determining a locking reason of the switch;

2. The processing method according to claim 1, wherein determining a processing strategy according to the locking reason comprises:

3. The process of claim 1, wherein determining the process mode based on at least two of a lockout reason, a bus bar operation mode, and a switch type comprises:

when the pressure of the locking reason is reduced due to the insulating medium, determining a processing mode according to the type of the switch;

4. The method according to claim 3, wherein when the cause of the latch-up is a decrease in the pressure of the insulating medium, the determining the manner of the process according to the type of the switch includes:

5. The processing method according to claim 3, wherein when the cause of the latch is an operational failure, determining the processing mode according to the bus operation mode and the switch type comprises:

when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is an outlet switch, the processing mode comprises one of the following three modes: controlling other switches in a bus where the latching switch is located and disconnecting switches on two sides of the latching switch in an isolation way; controlling a bypass switch to replace the latching switch and controlling the disconnecting link at two sides of the latching switch to be isolated and disconnected in an equipotential manner; controlling other switches on the bus where the latching switch is located to be transferred to other buses and controlling a bus-tie switch in the double buses to be disconnected so as to isolate the latching switch;

when the locking reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is a bus-coupled switch, the processing mode comprises one of the following three modes: controlling the bus coupler switch to be an uncontrollable switch and simultaneously adjusting bus differential protection to be non-selective bus differential protection; controlling other switches on the bus where the locking switch is located to be transferred to other buses and controlling disconnecting switches on two sides of a bus-coupled switch in the double buses to be isolated and disconnected; controlling all the outgoing line switches and disconnecting switches on two sides of the locking switch in the transformer substation to be isolated and disconnected;

6. The processing method according to claim 5, characterized in that it further comprises:

determining whether a bypass switch override condition exists;

if so, controlling a bypass switch to replace the latching switch and controlling the disconnecting link at two sides of the latching switch to be isolated and disconnected in an equipotential manner;

when the lockout reason is an operable fault, the bus operation mode is double-bus parallel operation, and the switch type is a bus tie switch, determining the priority of different processing modes, including:

if yes, controlling the bus-coupled switch to be an uncontrollable switch and simultaneously adjusting the bus differential protection to be non-selective bus differential protection;

7. The process of claim 1, wherein prior to determining the process mode based on at least two of a lockout reason, a bus bar operating mode, and a switch type, further comprising:

and determining the bus operation mode.

8. A device for handling a switch lockout fault, comprising:

9. An electronic device, characterized in that the electronic device comprises:

at least one processor; and

the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform the method of handling a switch lockout fault of any one of claims 1-7.

10. A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions for causing a processor to perform the method for handling a switch lockout fault of any one of claims 1-7 when executed.