CN118174275A

CN118174275A - Bus voltage-loss fault processing method and device, electronic equipment and storage medium

Info

Publication number: CN118174275A
Application number: CN202410162090.8A
Authority: CN
Inventors: 林文星; 汤梓苡; 卢珊
Original assignee: Guangdong Power Grid Co Ltd; Shaoguan Power Supply Bureau Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Shaoguan Power Supply Bureau Guangdong Power Grid Co Ltd
Priority date: 2024-02-05
Filing date: 2024-02-05
Publication date: 2024-06-11

Abstract

The invention discloses a bus voltage-loss fault processing method, a device, electronic equipment and a storage medium, which comprise the following steps: when the bus is out of voltage, a monitoring signal of power grid equipment is obtained, wherein the monitoring signal comprises a protection action signal, a switch deflection signal and a telemetry abnormal signal; logically matching the monitoring signals with a preset power grid fault analysis rule to obtain fault equipment, equipment fault types and fault confidence coefficients, wherein each fault equipment corresponds to at least one equipment fault type and one fault confidence coefficient; inputting fault equipment, equipment fault types and fault confidence into a preset bus fault prediction model to obtain bus fault types; fault isolation is implemented based on the busbar fault type, and a target transfer feeder is determined and load transfer is carried out based on feeder information of the feeder. The fault equipment and the equipment fault type can reflect the voltage loss characteristic of the bus, and the feeder information can represent the characteristic of the feeder in the power distribution network, so that the accuracy of determining the bus fault type and the load transfer scheme is improved.

Description

Bus voltage-loss fault processing method and device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of bus voltage loss fault processing technologies, and in particular, to a bus voltage loss fault processing method, a device, an electronic device, and a storage medium.

Background

In a power grid, abnormal and fault of equipment such as a main network line, a main transformer, a switch, a bus and the like can cause the voltage loss of a 10kV bus of a transformer substation, and the power failure of a feeder line hung under the bus is caused.

Under the traditional disposal mode, a dispatcher needs to extract effective fault information from mass alarms of an automatic master station, judge the fault type causing busbar voltage loss, then formulate a corresponding fault isolation scheme and a load transfer scheme, manually initiate a loop opening and closing operation task and execute the task one by one.

The processing mode is complex in operation and time-consuming, so that the power distribution network is powered off for a long time in a large range, adverse effects are brought to users, and inaccuracy can exist in the process of obtaining the scheme by judging the fault type causing the busbar voltage loss only through observation and experience.

Disclosure of Invention

The invention provides a bus voltage-loss fault processing method, which aims to solve the problems of complicated operation, time consumption and low accuracy existing in manual judgment of the fault type causing the bus voltage loss and determination of a transfer scheme.

In a first aspect, the present invention provides a method for processing a busbar voltage loss fault, where the busbar is a 10kV busbar, and the method includes:

When the bus is out of voltage, acquiring monitoring signals of power grid equipment, wherein the monitoring signals comprise protection action signals, switch deflection signals and telemetry abnormal signals;

Logically matching the monitoring signals with a preset power grid fault analysis rule to obtain fault equipment, equipment fault types and fault confidence levels, wherein each fault equipment corresponds to at least one equipment fault type and one fault confidence level;

inputting the fault equipment, the equipment fault type and the fault confidence into a preset bus fault prediction model to obtain a bus fault type;

Implementing fault isolation based on bus fault type;

and determining a target transfer feeder based on feeder information of the feeder and carrying out load transfer.

In a second aspect, the present invention provides a busbar voltage loss fault processing device, including:

The signal acquisition module is used for acquiring monitoring signals of power grid equipment when the bus is out of voltage, wherein the monitoring signals comprise protection action signals, switch deflection signals and telemetry abnormal signals;

The equipment fault analysis module is used for logically matching the monitoring signals with a preset power grid fault analysis rule to obtain fault equipment, equipment fault types and fault confidence levels, wherein each fault equipment corresponds to at least one equipment fault type and one fault confidence level;

The bus fault analysis module is used for inputting the fault equipment, the equipment fault type and the fault confidence into a preset bus fault prediction model to obtain a bus fault type;

The fault isolation implementation module is used for implementing fault isolation based on the bus fault type;

And the load transfer module is used for determining a target transfer feeder based on feeder information of the feeder and carrying out load transfer.

In a third aspect, the present invention provides an electronic device, including:

at least one processor; and

A memory communicatively coupled to the at least one processor; wherein,

The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the bus bar voltage loss fault handling method according to the first aspect of the present invention.

In a fourth aspect, the present invention provides a computer readable storage medium, where computer instructions are stored, where the computer instructions are configured to cause a processor to execute the bus voltage loss fault handling method according to the first aspect of the present invention.

The embodiment of the invention provides a bus voltage-loss fault processing method, wherein a bus is a 10kV bus, and the method comprises the following steps: when the bus is out of voltage, a monitoring signal of power grid equipment is obtained, wherein the monitoring signal comprises a protection action signal, a switch deflection signal and a telemetry abnormal signal; logically matching the monitoring signals with a preset power grid fault analysis rule to obtain fault equipment, equipment fault types and fault confidence coefficients, wherein each fault equipment corresponds to at least one equipment fault type and one fault confidence coefficient; inputting fault equipment, equipment fault types and fault confidence into a preset bus fault prediction model to obtain bus fault types; fault isolation is implemented based on bus fault type. When the busbar is detected to lose voltage, the busbar fault type is obtained by obtaining fault equipment, equipment fault type and fault confidence data and adopting a busbar fault model to process the data, on one hand, the judging process of the fault type is automatic, manpower and time can be saved, bad influence on a user caused by long-time power failure is avoided, on the other hand, when the busbar is in voltage loss, the fault equipment and equipment fault type can fully reflect the busbar voltage loss characteristic, and the busbar voltage loss characteristic and the busbar voltage loss fault type are corresponding, so that the busbar fault type can be determined by adopting the fault equipment and the equipment fault type, the busbar fault type can be determined by adopting the busbar fault prediction model to have feasibility and rationality, and meanwhile, the busbar fault type can be determined by combining the confidence, and the accuracy of busbar fault type judgment can be improved. On the basis, the target transfer feeder is determined based on the feeder information of the feeder and the load transfer is carried out, so that the load transfer scheme is enabled to be dependent, the accuracy of the load transfer scheme is improved, and the defect that the load transfer scheme is easy to miss and neglect due to manual determination is avoided.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of a busbar loss of voltage fault processing method according to a first embodiment of the present invention;

fig. 2 is a flowchart of a busbar voltage loss fault processing method according to a second embodiment of the present invention;

FIG. 3 is a flow chart of load transfer after determining the type of bus fault according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a busbar voltage loss fault handling device according to a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

Example 1

Fig. 1 is a flowchart of a bus voltage-loss fault processing method provided in an embodiment of the present invention, where the embodiment is applicable to a case where a bus voltage-loss fault occurs to process a fault, the bus is a10 kV bus, the method may be performed by a bus voltage-loss fault processing device, the bus voltage-loss fault processing device may be implemented in a form of hardware and/or software, and the bus voltage-loss fault processing device may be configured in an electronic device. As shown in fig. 1, the bus voltage loss fault processing method includes:

S101, when busbar voltage loss exists, monitoring signals of power grid equipment are obtained, wherein the monitoring signals comprise protection action signals, switch deflection signals and telemetry abnormal signals.

The method can periodically scan the real-time state of the bus of the whole network to obtain bus voltage measurement data, analyze and search the bus-connected switch and the low-voltage switch connected with the bus through topological relation, obtain the switch position state and the switching current measurement data, and screen out a 10kV bus voltage loss event according to a bus voltage loss criterion. In an alternative embodiment, before acquiring the monitoring signal of the power grid device when the bus is out of voltage, the method further comprises: analyzing and searching out a connecting switch connected with the bus through a preset topological relation, wherein the connecting switch comprises a bus-bar switch and a low-voltage switch; acquiring the position state of a connecting switch and switch current data as switch information; acquiring switching information of a connecting switch connected with a bus according to a preset topological relation, and acquiring voltage data of the bus; and determining whether the bus voltage loss exists or not based on the voltage data, the switching information and a preset voltage loss judgment strategy.

The voltage loss judgment strategy, namely a bus voltage loss criterion, can be specifically: the three-phase voltage of the bus jumps and is lower than a threshold value; the bus association becomes low switching current zero and the bus association switching current zero; and the fault lasts for a certain time, and the conditions of bus overhaul state, bus association low-switching current mutation, bus association switching current mutation and the like are eliminated.

The monitoring signal is a signal with time sequence, and comprises a protection action signal, a switch deflection signal and a remote measurement abnormal signal. The protection action signals mainly originate from the line protection device, and when the relay protection device detects abnormal conditions such as overload and short circuit of the power system, the protection action signals are sent out. The switch deflection signal refers to deflection signals of equipment or devices such as a knife switch, a ground knife, a change-over switch, a pressing plate and the like; the telemetering abnormal signal refers to an analog quantity out-of-limit signal, and comprises current, voltage, active power, power rate, temperature out-of-limit and the like.

It can be seen that the monitoring signal of the power grid device is closely related to the busbar voltage loss, and when the busbar voltage loss occurs, analysis can be started from the monitoring signal of the power grid device.

S102, logically matching the monitoring signals with a preset power grid fault analysis rule to obtain fault equipment, equipment fault types and fault confidence coefficients, wherein each fault equipment corresponds to at least one equipment fault type and one fault confidence coefficient.

The device may be a device element on a bus or a device on a feeder. The fault device is determined here, possibly as a fault of a device on the busbar body, and possibly as a fault of a device on the feeder.

The types of faulty devices mainly include: main transformer fault, switch fault, superior power supply voltage-loss fault and feeder line override trip fault, wherein the main transformer fault, switch fault and superior power supply voltage-loss fault belong to bus body fault. The method comprises the steps of designing a power grid fault analysis rule in advance according to historical data and experience, logically matching the abnormal information with the rule, analyzing information of fault equipment, and carrying out feature classification on the fault equipment to obtain equipment fault types and qualitative fault confidence.

For a faulty device, it may correspond to multiple device fault types and multiple fault confidence levels; for example: fault type a, fault confidence 80%; fault type B, fault confidence 40%.

S103, inputting the fault equipment, the equipment fault type and the fault confidence into a preset bus fault prediction model to obtain a bus fault type.

The bus fault prediction model is obtained through training, and the training process is to train the ability of the bus fault prediction model to identify the bus fault type according to training data (fault equipment, equipment fault type and fault confidence). The bus fault prediction model can be a CNN, DNN, RNN neural network, and the training mode can be a supervised learning training method.

Optionally, the preset bus fault prediction model is obtained through training in the following manner:

Acquiring a training set of a plurality of training information, wherein the training information is data of power grid equipment actually acquired when a bus fails, and comprises failure equipment, equipment failure types and failure confidence;

Marking the training information with a first bus fault type based on the fault type when the bus fails;

determining a training set as a current training set;

randomly extracting one training information aiming at the current training set, and inputting the training information into a bus fault prediction model to obtain a second bus fault type of the training information;

Determining whether the prediction is correct based on the first bus fault type and the second bus fault type;

When the training information in the current training set is input, judging whether the correct probability of the bus fault prediction model is larger than a preset probability threshold value or not;

if yes, determining that the bus fault prediction model training is completed;

If not, parameters of the bus fault prediction model are adjusted based on the correct probability, and the step of determining one training set as the current training set is executed.

After training is completed, fault equipment, equipment fault types and fault confidence can be input into a preset bus fault prediction model, and the current bus fault type is obtained. Bus fault types generally include: bus body faults and feeder override trip faults.

S104, fault isolation is implemented based on the busbar fault type.

Once the bus faults are found, the related power supply is cut off immediately, so that the faults can be prevented from being expanded, and the influence of the faults on other equipment is reduced. Accordingly, implementing fault isolation based on bus fault type includes: the connection switch and all the outgoing switches connected with the control bus are disconnected.

In addition, after the power is cut off, the fault region can be isolated. The fault area is isolated from other equipment by providing an isolating switch or other isolating means to prevent fault spread. For example, for a faulty feeder, the hang-up service sign prohibits closing the low switch, the female switch, and the outlet switch. Bus fault types generally include: when the fault of the bus body is the fault of the bus body, the maintenance card is hung on the bus and the maintenance is carried out, and when the fault of the feeder override trip is the fault of the feeder, the maintenance card can be hung on the corresponding feeder and the maintenance is carried out.

S105, determining a target transfer feeder based on feeder information of the feeder and carrying out load transfer.

The main task of the bus bar is to conduct the current of the system, typically transmitting power within a substation, a switchboard or any other type of electrical equipment. A feeder is a connection between an input terminal and an output terminal, a feeder is an electrically conductive device for delivering power to a main load center, and may be described as a power line through which power passes in a distribution grid (which may also be a power system), a distribution feeder exits a substation through an underground cable, which transmits power from the substation to a different distribution point.

Load transfer refers to a technical scheme for transferring the load of one power consumer to another power consumer in a power system, and the balance and optimization of the power system are realized by adjusting the distribution of the power load in the power system. When the bus fault type is a bus body fault, load transfer cannot be performed, and when the bus fault type is a feeder override trip fault, load transfer can be performed.

The feeder information can comprise power information related to voltage, current, load and the like, the feeder information of the feeder can reflect the operation characteristics of the feeder in the power distribution network, so that the feasibility of the feeder for load transfer can be judged based on the feeder information, as the number of the feeder is usually more, a target transfer feeder can be determined through the feeder information, the available load capacity of the feeder can be determined according to the feeder information, the feeder with the largest available load capacity is selected as the target transfer feeder after the sorting of the load capacity is carried out, and the target transfer feeder is determined and the load transfer is carried out based on the feeder information of the feeder on the basis of determining the type of bus faults, so that the load transfer scheme can be dependent, the accuracy of the load transfer scheme is improved, and the defects of easy omission and negligence caused by manually determining the load transfer scheme are avoided.

Example two

Fig. 2 is a flowchart of a bus voltage loss fault handling method according to a second embodiment of the present invention, and the optimization is performed based on the first embodiment, and it should be noted that, in this embodiment, load transfer is performed when a bus fault type is not a bus body fault.

As shown in fig. 2, the bus voltage loss fault processing method includes:

And S201, when the busbar is out of voltage, acquiring a monitoring signal of the power grid equipment, wherein the monitoring signal comprises a protection action signal, a switch deflection signal and a remote sensing abnormal signal.

S202, logically matching the monitoring signals with a preset power grid fault analysis rule to obtain fault equipment, equipment fault types and fault confidence coefficients, wherein each fault equipment corresponds to at least one equipment fault type and one fault confidence coefficient.

S203, inputting the fault equipment, the equipment fault type and the fault confidence into a preset bus fault prediction model to obtain a bus fault type.

S204, fault isolation is implemented based on the busbar fault type.

S201-S204 are similar to S101-S104, and reference is made specifically to the contents of S101-S104, which are not described herein.

S205, when the bus fault type is a feeder override trip fault, acquiring sequence information of a feeder automation switch of a distribution master station system.

After fault isolation is implemented, in order to ensure power supply, a transfer feeder line needs to be determined. Thus, sequence information of feeder automation switches of the power distribution master station system is acquired.

Feeder automation refers to feeder circuit automation from a transformer substation outgoing line to consumer electric equipment, and the content of the feeder automation can be summarized into two aspects: user detection, data measurement and operation optimization under normal conditions; and secondly, fault detection, fault isolation, transfer and power supply recovery control under an accident state.

The sequence information of the feeder automation switch of the distribution main station system is taken, specifically, the FA generalized feeder group switch sequence information of the distribution main station system can be extracted, the connection relation of the feeder, the bus and the main transformer and the corresponding outgoing switch and connecting switch list are established in a data structure mode, corresponding transfer priority is set for a plurality of inter-transfer lines, and a transfer switch sequence library of the self-healing feeder group is generated in a transfer plan list mode, so that the sequence information of the feeder automation switch is obtained.

S206, searching a transfer path and a switch from the side to the side of the bus according to the sequence information by taking the bus as a starting point, and obtaining an alternative transfer feeder.

When the bus of the transformer substation is out of voltage and has power failure or the bus fails and has power failure, the single feeder line can be turned to the electricity by preferentially considering the connecting feeder line in a mode of closing the connecting point. According to the sequence information of the feeder automation switches, which switches are available for transfer can be known, the bus is taken as a starting point, and a feasible transfer path and a switch which are required to be experienced when the bus is from side to side are obtained, so that an alternative transfer feeder is obtained. There may be a plurality of alternative divert feed lines. The existing distribution automation system is quite mature in fault judgment and self-healing function research application of Feeder Automation (FA), but is limited to distribution network lines, and distribution automation function expansion application is still weak under the condition that a plurality of feeders of a distribution network are simultaneously powered off due to 10kV bus voltage loss. In the prior art, a load transfer scheme is still determined by a dispatcher, and the operation of manually initiating the loop opening and closing operation task and executing the processing mode one by one is complex in operation and time-consuming, and a power supply path obtained only by observation and experience is easy to miss and neglect, so that the power distribution network is in a large-scale long-time power failure.

S207, setting corresponding transfer priority for the alternative transfer feeder.

Specifically, the transfer priority may be set according to whether there is a fault, a lock, a sign of a non-nuclear phase on a path, or the like, for example, security check is performed on an alternative transfer feeder, whether the self-healing function of the feeder FA is locked, whether the tie switch has a sign board with an operation prohibition attribute, whether there is a switch protection state abnormality in the transfer path, whether the bus voltage connected to the opposite-end line is zero, and if yes, the alternative transfer feeder is filtered. Of course, the priority of the diversion of each alternative diversion feeder may also be set according to the path length of the alternative diversion feeder, the important users on the feeder, etc., as the invention is not limited in this regard.

S208, determining a target transfer feeder from the alternative transfer feeders according to the transfer priority of the alternative transfer feeder.

In an alternative embodiment, determining the target transfer feeder from the alternative transfer feeders according to the transfer priority of the alternative transfer feeder includes: obtaining the maximum load value and the actual load of the alternative transfer feeder; calculating a load margin for each alternative feed line based on the maximum load value and the actual load; determining the undetermined transfer feeder with highest current priority in the alternative transfer feeder; judging whether the load margin of the feeder line to be transferred is larger than 0; if yes, taking the to-be-determined transfer feeder as a target transfer feeder; if not, the current pending transfer feeder is removed from the alternative transfer feeder, and the step of determining the pending transfer feeder with the highest current priority in the alternative transfer feeder is carried out in a returning mode.

The maximum load value is converted into the maximum load value of the feeder line, and the actual load is the real-time load of the opposite-end line and the opposite-end main transformer.

The load margin index may be understood as the ratio of the remaining capacity of the power system when it is taking the maximum load for a certain period of time to the maximum load. The calculation method of the index comprises the following steps: load margin= (maximum load-actual load)/maximum load. The maximum load refers to the maximum load borne by the power system in a certain period, and the actual load refers to the actual power consumption in the period. The load margin index can reflect the power supply capacity and stability of the power system and is also the basis for power dispatching and power supply planning.

That is, the pending transfer feeder is preferentially determined according to the priority, whether or not a load margin (whether or not the load margin is greater than 0) exists is judged, and when the load margin is not present, the pending transfer feeder of the priority order is continuously examined.

S209, load transfer is carried out by adopting a target transfer feeder.

S210, closing a connection switch connected with the control bus and all outgoing line switches.

After the line transfer is executed, the power supply cards are hung and transferred at the corresponding outlet switch and the interconnection switch. When no faults of the voltage-losing buses are confirmed, a line list of the series-connected buses can be formed by the converted feeder lines, real-time load margin of the opposite-end lines is obtained, the additional load of the local feeder line is estimated, if the additional load is smaller than the load margin, a converted feeder line with the largest load margin of the opposite-end lines is automatically selected, one key of a dispatcher confirms the converted feeder line, and the line outlet switch of the local line is closed to realize the series-connected buses.

The method for estimating the extra load of the local feeder line comprises the following steps: fifteen minutes before the failure of the non-looped network feeder.

To clearly illustrate the load transfer process after determining the bus fault type, referring to fig. 3 and for illustration, fig. 3 is a flow chart of load transfer after determining the bus fault type, as shown in fig. 3, the process is as follows:

s301, hanging a fault maintenance card on a fault line;

the method specifically comprises the steps of hanging a fault overhaul board on a fault bus and hanging the fault overhaul board on a fault feeder;

S302, determining a fault-free feeder line;

S303, generating a feeder load transfer scheme;

S304, optimally screening a scheme;

S305, judging whether a load margin exists on the opposite-end line or not;

If yes, executing S306, if not, returning to executing S305;

s306, line transfer is carried out on the feeder line of the scheme;

s307, hanging and rotating the power supply cards by the rotated feeder lines;

s308, judging whether the bus body fails, if so, executing S312, and if not, executing S309;

the bus is a power source, if the bus body fails, load transfer cannot be performed, and S12 is executed;

S309, judging whether the transferred feeder has enough load margin, if not, executing S312, if so, executing S310;

S310, bus rapid serial supply;

s311, hanging and rotating a power supply board by the rotated feeder;

S312, ending.

In the embodiment, after fault isolation is implemented based on a bus fault type, sequence information of a feeder automation switch of a distribution master station system is acquired; searching a transfer path and a switch from the side to the opposite side of the bus according to the sequence information by taking the bus as a starting point to obtain an alternative transfer feeder; setting corresponding transfer priority for the alternative transfer feeder; determining a target transfer feeder from the alternative transfer feeders according to the transfer priority of the alternative transfer feeder; the target transfer feeder is adopted to carry out load transfer, so that the transfer feeder can be automatically, quickly and reasonably determined, the power failure time is reduced, and the manpower and material resources are saved.

Example III

Fig. 4 is a schematic structural diagram of a busbar voltage loss fault handling device according to a third embodiment of the present invention. As shown in fig. 4, the bus voltage-loss fault processing device includes:

The signal acquisition module 401 is configured to acquire a monitoring signal of the power grid device when the busbar is out of voltage, where the monitoring signal includes a protection action signal, a switch displacement signal and a telemetry abnormal signal;

The device fault analysis module 402 is configured to logically match the monitoring signal with a preset power grid fault analysis rule, so as to obtain a fault device, a device fault type and a fault confidence coefficient, where each fault device corresponds to at least one device fault type and one fault confidence coefficient;

The bus fault analysis module 403 is configured to input the fault device, the device fault type and the fault confidence coefficient into a preset bus fault prediction model, so as to obtain a bus fault type;

a fault isolation implementation module 404 for implementing fault isolation based on bus fault type;

And the load transfer module 405 is configured to determine a target transfer feeder based on feeder information of the feeder and perform load transfer.

In an alternative embodiment, the busbar voltage loss fault handling device further includes:

The connecting switch determining module is used for analyzing and searching out a connecting switch connected with the bus through a preset topological relation, and the connecting switch comprises a bus connection switch and a low-voltage switch;

the switch information acquisition module is used for acquiring the position state of the connecting switch and the switch current data as switch information;

The bus information acquisition module is used for acquiring switching information of a connecting switch connected with the bus according to a preset topological relation and acquiring voltage data of the bus;

and the bus voltage loss judging module is used for determining whether bus voltage loss exists or not based on the voltage data, the switch information and a preset voltage loss judging strategy.

In an alternative embodiment, the pre-set bus fault prediction model is trained by:

marking the training information with a first bus fault type based on the fault type when the bus breaks down;

Determining one training set as a current training set;

determining whether a prediction is correct based on the first bus fault type and the second bus fault type;

if yes, determining that the bus fault prediction model training is completed;

In an alternative embodiment, the fault isolation implementation module 404 includes:

And the line disconnection sub-module is used for controlling the disconnection of the connection switch connected with the bus and all the outgoing line switches.

In an alternative embodiment, the load transfer module 405 includes:

The sequence information acquisition sub-module is used for acquiring sequence information of a feeder automation switch of the distribution master station system when the bus fault type is feeder override trip fault;

the alternative transfer feeder determining submodule is used for searching transfer paths and switches from the side to the opposite side of the bus according to the sequence information by taking the bus as a starting point to obtain an alternative transfer feeder;

a transfer priority setting sub-module, configured to set a corresponding transfer priority for the alternative transfer feeder;

The target transfer feeder determining submodule is used for determining a target transfer feeder from the alternative transfer feeders according to the transfer priority of the alternative transfer feeder;

And the load transfer sub-module is used for carrying out load transfer by adopting the target transfer feeder line.

In an alternative embodiment, the target transfer feeder determination submodule includes:

the load data acquisition unit is used for acquiring the maximum load value and the actual load of the alternative transfer feeder;

A load margin calculation unit configured to calculate, for each of the alternative feed lines, a load margin based on the maximum load value and the actual load;

a pending transfer feeder determining unit, configured to determine a pending transfer feeder with a highest current priority in the alternative transfer feeders;

the load margin judging unit is used for judging whether the load margin of the to-be-transferred feeder is greater than 0; if yes, executing the content of the target transfer feeder line determining unit, and if not, executing the content of the rejecting unit;

a target transfer feeder determining unit, configured to use the pending transfer feeder as a target transfer feeder;

The rejecting unit is used for rejecting the current pending transfer feeder from the alternative transfer feeder, and returning the content of the pending transfer feeder determining unit.

And the line closing module is used for controlling the connection switch and all the outgoing line switches connected with the bus to be closed.

The bus voltage-loss fault processing device provided by the embodiment of the invention can execute the bus voltage-loss fault processing method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

Example IV

Fig. 5 shows a schematic diagram of an electronic device 40 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smartphones, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 5, the electronic device 40 includes at least one processor 41, and a memory communicatively connected to the at least one processor 41, such as a Read Only Memory (ROM) 42, a Random Access Memory (RAM) 43, etc., in which the memory stores a computer program executable by the at least one processor, and the processor 41 may perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 42 or the computer program loaded from the storage unit 48 into the Random Access Memory (RAM) 43. In the RAM 43, various programs and data required for the operation of the electronic device 40 may also be stored. The processor 41, the ROM 42 and the RAM 43 are connected to each other via a bus 44. An input/output (I/O) interface 45 is also connected to bus 44.

Various components in electronic device 40 are connected to I/O interface 45, including: an input unit 46 such as a keyboard, a mouse, etc.; an output unit 47 such as various types of displays, speakers, and the like; a storage unit 48 such as a magnetic disk, an optical disk, or the like; and a communication unit 49 such as a network card, modem, wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.

The processor 41 may be various general and/or special purpose processing components with processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 41 performs the respective methods and processes described above, such as a bus-bar voltage-loss fault processing method.

In some embodiments, the bus out-of-voltage fault handling method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 48. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 40 via the ROM 42 and/or the communication unit 49. When the computer program is loaded into RAM 43 and executed by processor 41, one or more steps of the busbar loss of voltage fault handling method described above may be performed. Alternatively, in other embodiments, processor 41 may be configured to perform the bus loss of voltage fault handling method in any other suitable manner (e.g., by means of firmware).

Various implementations of the systems and techniques described here above can be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), complex Programmable Logic Devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.

A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on 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 or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.

The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The bus voltage-loss fault processing method is characterized by comprising the following steps of:

Implementing fault isolation based on bus fault type;

2. The bus voltage loss fault handling method according to claim 1, further comprising, before the obtaining the monitoring signal of the power grid device when the bus voltage loss exists:

analyzing and searching out a connecting switch connected with a bus through a preset topological relation, wherein the connecting switch comprises a bus connection switch and a low-voltage switch;

acquiring the position state and the switching current data of the connecting switch as switching information;

Acquiring switching information of a connecting switch connected with a bus according to a preset topological relation, and acquiring voltage data of the bus;

And determining whether bus voltage loss exists or not based on the voltage data, the switch information and a preset voltage loss judgment strategy.

3. The bus voltage loss fault handling method according to claim 1, wherein the preset bus fault prediction model is trained by:

Determining one training set as a current training set;

if yes, determining that the bus fault prediction model training is completed;

4. The bus voltage loss fault handling method according to claim 1, wherein the performing fault isolation based on a bus fault type includes:

The connection switch and all the outgoing switches connected with the control bus are disconnected.

5. The bus bar voltage loss fault handling method of any of claims 1-4, wherein the feeder information comprises sequence information of a feeder automation switch, the feeder information based on the feeder determines a target transfer feeder and performs load transfer, comprising:

when the bus fault type is a feeder override trip fault, acquiring sequence information of a feeder automation switch of a distribution master station system;

Searching a transfer path and a switch from the side to the opposite side of the bus according to the sequence information by taking the bus as a starting point to obtain an alternative transfer feeder;

Setting corresponding transfer priority for the alternative transfer feeder;

determining a target transfer feeder from the alternative transfer feeders according to the transfer priority of the alternative transfer feeder;

and carrying out load transfer by adopting the target transfer feeder.

6. The bus voltage loss fault handling method according to claim 5, wherein the determining a target transfer feeder from the alternative transfer feeders according to the transfer priority of the alternative transfer feeders comprises:

obtaining the maximum load value and the actual load of the alternative transfer feeder;

Calculating a load margin for each of the alternative feed lines based on the maximum load value and the actual load;

determining the undetermined transfer feeder with highest current priority in the alternative transfer feeder;

judging whether the load margin of the to-be-transferred feeder is greater than 0;

If yes, the feeder line to be transferred is taken as a target transfer feeder line;

If not, the current to-be-transferred feeder is removed from the alternative to-be-transferred feeder, and the step of determining the to-be-transferred feeder with the highest current priority in the alternative to-be-transferred feeder is carried out in a returning mode.

7. The bus bar voltage loss fault handling method according to claim 1, further comprising, after the target transfer feeder is determined based on the feeder information of the feeder and load transfer is performed:

the connection switch and all the outgoing line switches connected with the control bus are closed.

8. The utility model provides a busbar decompression fault handling device which characterized in that includes:

9. An electronic device, the electronic device comprising:

at least one processor; and

A memory communicatively coupled to the at least one processor; wherein,

The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the bus bar voltage loss fault handling method of any one of claims 1-7.

10. A computer readable storage medium storing computer instructions for causing a processor to implement the bus voltage loss fault handling method of any one of claims 1-7 when executed.