Automatic closing control method of substation circuit breaker, measurement and control device and storage medium

Abstract

The embodiment of the application provides a kind of substation circuit breaker automatic closing control method, control equipment and storage medium, wherein, method includes: in response to the automatic closing instruction of input control equipment, it is judged whether the equipment state of each circuit breaker meets preset closing state rule, in the case where the operating state of each circuit breaker meets preset closing state rule, to each circuit breaker: it is judged whether first adjacent isolating switch and second adjacent isolating switch are all in closed state, if yes, the operating state of the circuit breaker is determined as closing state, in the case where the operating state of each circuit breaker is closing state, according to the closing sequence identification group of each circuit breaker, the closing sequence of each circuit breaker in single power substation is determined, and closing instruction including closing sequence is generated, and each circuit breaker is controlled according to closing sequence automatic closing based on closing instruction.The application shortens the power transmission time, and improves the power transmission efficiency.

Description

Technical Field

[0001] This invention relates to the field of automatic control technology for substation equipment, and in particular to an automatic closing control method, measurement and control equipment and storage medium for substation circuit breakers. Background Technology

[0002] A single-power-supply substation refers to a substation with only one incoming line. When a fault occurs in the incoming line of a single-power-supply substation, it will cause a complete power outage of the substation, leading to a large-scale power outage on downstream lines. To prevent damage to substation equipment from the surge current generated after power is restored to the incoming line, all circuit breakers in a single-power-supply substation must be disconnected after a complete power outage.

[0003] However, in a single-power-supply substation, all circuit breakers are in the open state after a complete power outage. Therefore, when power is restored after the incoming line fault is cleared, each circuit breaker needs to be manually closed sequentially. If misoperation occurs during manual control, risks such as equipment damage or increased power restoration time may arise. Furthermore, the substation contains a large number of circuit breakers, and relying on manual control would consume a significant amount of power restoration time. In summary, the existing technology carries the risks of prolonged power restoration time and reduced power restoration efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic closing control method, measurement and control equipment, and storage medium for substation circuit breakers, so as to achieve the objective of shortening power transmission time and improving power transmission efficiency. The specific technical solution is as follows:

[0005] An automatic closing control method for a substation circuit breaker, applied to the measurement and control equipment of a single-power-supply substation, the method comprising:

[0006] In response to the input automatic closing command from the monitoring and control equipment, determine whether the equipment status of each circuit breaker meets the preset closing status rules;

[0007] When the operating state of each circuit breaker meets the preset closing state rule, for each circuit breaker: determine whether the first adjacent disconnect switch and the second adjacent disconnect switch are both in the closed state. If so, the operating state of the circuit breaker is determined to be the waiting-to-close state. The first adjacent disconnect switch is the first disconnect switch near the busbar side of the circuit breaker, and the second adjacent disconnect switch is the first disconnect switch near the load side of the circuit breaker.

[0008] When all the circuit breakers are in the pending closing state, the closing sequence of each circuit breaker in the single-power substation is determined according to the closing sequence identifier group of each circuit breaker, and a closing command including the closing sequence is generated. Based on the closing command, each circuit breaker is controlled to automatically close according to the closing sequence.

[0009] Optionally, the closing sequence identifier group consists of a voltage level identifier and a line location identifier. When all the circuit breakers are in the pending closing state, the closing sequence of each circuit breaker within the single-power-supply substation is determined according to the closing sequence identifier group of each circuit breaker, and a closing command including the closing sequence is generated. Based on the closing command, each circuit breaker is controlled to automatically close according to the closing sequence, including:

[0010] The circuit breakers are classified according to the voltage level identifier to obtain multiple circuit breaker groups of the same level, wherein the voltage level identifiers of the circuit breakers in the same level group are the same.

[0011] For each circuit breaker group of the same level: according to the line position identifier of each circuit breaker in the same level circuit breaker group, the circuit breakers in the same level circuit breaker group are sorted in order from the bus side to the load side to obtain the first closing sequence of each circuit breaker in the same level circuit breaker group.

[0012] Based on the voltage level identification of each circuit breaker group of the same level, the circuit breaker groups of the same level are sorted in order from high voltage side to low voltage side to obtain the second closing sequence.

[0013] Based on the first closing sequence and the second closing sequence, the closing sequence of each circuit breaker in the single-power substation is determined, and a closing instruction including the closing sequence is generated. The closing sequence is that each circuit breaker group of the same level is arranged in the first order, and each circuit breaker in the same circuit breaker group of the same level is arranged in the second order.

[0014] Based on the closing command, each circuit breaker is controlled to automatically close in the closing sequence.

[0015] Optionally, determining whether the device status of each circuit breaker meets the preset closing status rules includes:

[0016] For each circuit breaker:

[0017] Read the device status identifier of the circuit breaker, which includes: fault identifier and open / closed status identifier;

[0018] Determine whether the fault identifier is empty. If it is, determine that the equipment status of the circuit breaker satisfies the fault-free rule in the preset closing status rule.

[0019] Determine whether the open / closed status indicator indicates that the circuit breaker is in the open state. If so, determine that the equipment status of the circuit breaker satisfies the on / off rule in the preset closing status rule.

[0020] If the device status satisfies both the fault-free rule and the preset on / off rule, then the device status of the circuit breaker is determined to satisfy the preset closing status rule.

[0021] Optional, also includes:

[0022] If the fault identifier is not empty, read the fault code and station number of the circuit breaker, determine the fault type corresponding to the fault code, and send an alarm command including the fault type and the station number to the alarm device so that the alarm device responds to the alarm command and starts to alarm, and displays the fault type and the station number of the circuit breaker.

[0023] Optionally, the method further includes:

[0024] When at least one of the first adjacent disconnecting switch and the second adjacent disconnecting switch is not in the closed state, the operating state of the circuit breaker is determined to be a prohibited closing state, and the operating status identifier of the adjacent disconnecting switch that is not in the closed state is read.

[0025] When the working status identifier is a normal status identifier, a closing command is sent to the adjacent disconnect switch that is not in the closed state, so that the adjacent disconnect switch that is not in the closed state closes in response to the closing command;

[0026] Return to the step of determining whether both the first adjacent disconnect switch and the second adjacent disconnect switch are in the closed state.

[0027] A measurement and control device, wherein the measurement and control device is for a single-power substation, the measurement and control device comprising:

[0028] The circuit breaker detection module is used to respond to the automatic closing command input by the measurement and control equipment and determine whether the equipment status of each circuit breaker meets the preset closing status rules.

[0029] The condition judgment module is used to determine whether the first adjacent disconnect switch and the second adjacent disconnect switch are both in the closed state for each circuit breaker when the operating state of each circuit breaker meets the preset closing state rule. If so, the operating state of the circuit breaker is determined to be the waiting-to-close state. The first adjacent disconnect switch is the first disconnect switch near the busbar side of the circuit breaker, and the second adjacent disconnect switch is the first disconnect switch near the load side of the circuit breaker.

[0030] The closing control module is used to determine the closing sequence of each circuit breaker in the single-power substation according to the closing sequence identifier group of each circuit breaker when the operating state of each circuit breaker is the waiting-to-close state, and to generate a closing command including the closing sequence, and to control each circuit breaker to automatically close according to the closing sequence based on the closing command.

[0031] Optionally, the closing control module is configured as follows:

[0032] The circuit breakers are classified according to their voltage level identifiers to obtain multiple circuit breaker groups of the same level. The voltage level identifiers of the circuit breakers in the same level group are the same, and the voltage level identifier is one of the identifiers in the closing sequence identifier group of each circuit breaker.

[0033] For each circuit breaker group of the same level: according to the line position identifier of each circuit breaker in the same level circuit breaker group, the circuit breakers in the same level circuit breaker group are sorted in order from the bus side to the load side to obtain the first closing sequence of each circuit breaker in the same level circuit breaker group, wherein the line position identifier is another identifier in the closing sequence identifier group of the circuit breaker.

[0034] Based on the voltage level identification of each circuit breaker group of the same level, the circuit breaker groups of the same level are sorted in order from high voltage side to low voltage side to obtain the second closing sequence.

[0035] Based on the first closing sequence and the second closing sequence, the closing sequence of each circuit breaker in the single-power substation is determined, and a closing instruction including the closing sequence is generated. The closing sequence is that each circuit breaker group of the same level is arranged in the first order, and each circuit breaker in the same circuit breaker group of the same level is arranged in the second order.

[0036] Based on the closing command, each circuit breaker is controlled to automatically close in the closing sequence.

[0037] Optionally, the circuit breaker detection module is configured as follows:

[0038] For each circuit breaker:

[0039] Read the device status identifier of the circuit breaker, which includes: fault identifier and open / closed status identifier;

[0040] Determine whether the fault identifier is empty. If it is, determine that the equipment status of the circuit breaker satisfies the fault-free rule in the preset closing status rule.

[0041] Determine whether the open / closed status indicator indicates that the circuit breaker is in the open state. If so, determine that the equipment status of the circuit breaker satisfies the on / off rule in the preset closing status rule.

[0042] If the device status satisfies both the fault-free rule and the preset on / off rule, then the device status of the circuit breaker is determined to satisfy the preset closing status rule.

[0043] Optionally, the circuit breaker detection module is further configured as follows:

[0044] If the fault identifier is not empty, read the fault code and station number of the circuit breaker, determine the fault type corresponding to the fault code, and send an alarm command including the fault type and the station number to the alarm device so that the alarm device responds to the alarm command and starts to alarm, and displays the fault type and the station number of the circuit breaker.

[0045] Optionally, the condition judgment module is further configured as follows:

[0046] When at least one of the first adjacent disconnecting switch and the second adjacent disconnecting switch is not in the closed state, the operating state of the circuit breaker is determined to be a prohibited closing state, and the operating status identifier of the adjacent disconnecting switch that is not in the closed state is read.

[0047] When the working status identifier is a normal status identifier, a closing command is sent to the adjacent disconnect switch that is not in the closed state, so that the adjacent disconnect switch that is not in the closed state closes in response to the closing command;

[0048] Return to the step of determining whether both the first adjacent disconnect switch and the second adjacent disconnect switch are in the closed state.

[0049] A computer storage medium, when the instructions in the computer storage medium are executed by the processor of a measurement and control device, enables the measurement and control device to perform the automatic closing control method for a substation circuit breaker as described above.

[0050] The automatic closing control method, measurement and control equipment, and storage medium for substation circuit breakers provided in this invention can detect the equipment status of each circuit breaker according to preset closing status rules after receiving an automatic closing command, thus avoiding the risk of prolonged power supply time due to circuit breaker failure. Simultaneously, by confirming the open / closed status of adjacent disconnect switches before the circuit breaker closes, the risk of prolonged power supply time and reduced power supply efficiency due to misoperation leading to other faults is avoided. Finally, by automatically acquiring the closing sequence identifier group of each circuit breaker, the closing sequence of each circuit breaker is determined, and a closing command for controlling automatic closing is generated according to the closing sequence, eliminating the need for manual sequential closing. This invention, compared to existing technologies, avoids the risks of prolonged power supply time and misoperation caused by manual closing, shortens power supply time, and improves power supply efficiency. Therefore, this invention shortens power supply time and improves power supply efficiency.

[0051] Of course, any product or method implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 A flowchart of an automatic closing control method for a substation circuit breaker provided in an embodiment of the present invention;

[0054] Figure 2 A wiring diagram of a single-power-supply substation is provided as an optional embodiment of the present invention;

[0055] Figure 3 A block diagram of a measurement and control device provided as another optional embodiment of the present invention. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] This invention provides an automatic closing control method for substation circuit breakers, such as... Figure 1As shown, this automatic closing control method is applied to the measurement and control equipment of a single-power-supply substation. The automatic closing control method includes:

[0058] S101. In response to the automatic closing command from the input monitoring and control equipment, determine whether the equipment status of each circuit breaker meets the preset closing status rules.

[0059] Optionally, in one alternative embodiment of the present invention, the above-mentioned automatic closing instruction may be a trigger instruction generated by a substation monitoring server or processor.

[0060] It should be noted that in practical applications, to avoid prolonged power supply time caused by circuit breakers failing to perform automatic closing operations due to their own faults, this invention is designed to detect the equipment status of each circuit breaker according to preset closing status rules after receiving an automatic closing command, thereby avoiding the risk of prolonged power supply time due to circuit breaker faults. The aforementioned equipment status can be obtained from the substation's equipment management system. This equipment status can include a set of various types of signal identifiers, such as circuit breaker energy storage signals, circuit breaker on / off signals, and circuit breaker fault signals.

[0061] S102. When the operating status of each circuit breaker meets the preset closing status rules, for each circuit breaker: determine whether the first adjacent disconnecting switch and the second adjacent disconnecting switch are both in the closed state. If so, determine the operating status of the circuit breaker as the waiting-to-close state. The first adjacent disconnecting switch is the first disconnecting switch near the busbar side of the circuit breaker, and the second adjacent disconnecting switch is the first disconnecting switch near the load side of the circuit breaker.

[0062] It should be noted that, in practical application scenarios, after receiving the aforementioned automatic closing command, the operation steps described above for determining whether the equipment status of each circuit breaker meets the preset closing status rules can be combined with the steps described above. Figure 1 The steps S102 shown can be executed simultaneously or sequentially.

[0063] Optionally, in one embodiment of the present invention, since the disconnecting switch does not have the arc-extinguishing function of a circuit breaker, if the circuit breaker closes before the disconnecting switch due to misoperation, causing damage to the disconnecting switch or other electrical equipment at the moment of circuit breaker closing, power supply must be interrupted, and the damaged equipment must be repaired or replaced. Since the time required for replacing electrical equipment is uncontrollable due to the influence of construction conditions, this prolongs the power supply time, leading to reduced power supply efficiency. Therefore, the present invention confirms the open / closed status of adjacent disconnecting switches before the circuit breaker closes, thereby avoiding the risk of prolonged power supply time and reduced power supply efficiency caused by other faults due to misoperation.

[0064] Optionally, in another optional embodiment of the present invention, the open / closed state of the adjacent disconnecting switches can be determined by acquiring the electrical signals or operation record data of the electric operating mechanism of the adjacent disconnecting switches. The electric operating mechanism can be a mechanism composed of a motor, a mechanical reduction transmission system, and an electrical control system. By acquiring the control signal output by the electrical control system of this mechanism, the open / closed state of the adjacent disconnecting switches can be determined. The present invention does not impose excessive limitations on the specific model of the electric operating mechanism.

[0065] S103. When all circuit breakers are in the waiting-to-close state, determine the closing sequence of each circuit breaker in the single-power substation according to the closing sequence identifier group of each circuit breaker, and generate a closing command including the closing sequence. Based on the closing command, control each circuit breaker to automatically close according to the closing sequence.

[0066] Optionally, in one alternative embodiment of the present invention, since the closing sequence of the circuit breaker within the substation is determined based on the line location and line voltage level of the circuit breaker within the substation, the aforementioned closing sequence identifier group may be a data group including multiple signal identifiers representing the line location and line voltage level of the circuit breaker within the substation.

[0067] Those skilled in the art will understand that the aforementioned closing sequence identifier group can be obtained by reading equipment management parameters from the substation monitoring system. This invention will not elaborate further on the specific implementation methods for obtaining the aforementioned closing sequence identifier group.

[0068] Optionally, in one alternative embodiment of the present invention, the above-mentioned automatic closing of each circuit breaker according to the closing sequence based on the closing command can be achieved by setting up a command receiving plug-in in the existing substation monitoring system. This command receiving plug-in can be configured to read the closing command and, according to the closing sequence in the closing command, sequentially trigger each control subunit in the substation system to perform the closing operation.

[0069] It should be noted that, due to the varying voltage levels and operational needs of related electrical equipment, multiple circuit breakers are typically installed at different locations within a substation. During closing, maintenance personnel visually confirm the closing sequence of each circuit breaker at their respective locations and report this to the control personnel. The control personnel then control the circuit breakers to close sequentially based on the reported results. This results in significant time spent by maintenance personnel moving between circuit breakers. Furthermore, in actual operation, a substation may have multiple outgoing lines, each with a specific energizing sequence. This makes the existing manual closing method prone to operational errors. Therefore, this invention automatically acquires the closing sequence identifiers of each circuit breaker, determines the closing sequence, and generates closing commands for automatic closing based on the sequence. Compared to existing technologies, this invention avoids the prolonged energizing time and operational errors associated with manual closing, shortens energizing time, and improves energizing efficiency.

[0070] This invention avoids the risk of prolonged power supply time due to circuit breaker failure by detecting the equipment status of each circuit breaker according to preset closing status rules after receiving an automatic closing command. Simultaneously, it confirms the open / closed status of adjacent disconnect switches before the circuit breaker closes, thus avoiding the risk of prolonged power supply time and reduced power supply efficiency due to misoperation causing other faults. Finally, by automatically acquiring the closing sequence identifier group of each circuit breaker, the closing sequence of each circuit breaker is determined, and a closing command for controlling automatic closing is generated according to the closing sequence, eliminating the need for manual sequential closing. Compared to existing technologies, this invention avoids the risks of prolonged power supply time and misoperation caused by manual closing, shortening the power supply time and improving power supply efficiency. Therefore, this invention shortens the power supply time and improves power supply efficiency.

[0071] Optionally, the closing sequence identifier group consists of a voltage level identifier and a line position identifier. When all circuit breakers are in a pending closing state, the closing sequence of each circuit breaker within the single-power-supply substation is determined based on the closing sequence identifier group of each circuit breaker, and a closing command including the closing sequence is generated. Based on the closing command, each circuit breaker is automatically closed according to the closing sequence, including:

[0072] Each circuit breaker is classified according to its voltage level identifier, resulting in multiple circuit breaker groups of the same level. In each circuit breaker group of the same level, the voltage level identifiers of each circuit breaker are the same.

[0073] For each circuit breaker group of the same level: based on the line location identification of each circuit breaker in the same level circuit breaker group, the circuit breakers in the same level circuit breaker group are sorted in the order from the bus side to the load side to obtain the first closing sequence of each circuit breaker in the same level circuit breaker group.

[0074] Based on the voltage level identification of each circuit breaker group of the same level, the circuit breaker groups of the same level are sorted in order from high voltage side to low voltage side to obtain the second closing sequence.

[0075] Based on the first closing sequence and the second closing sequence, the closing sequence of each circuit breaker in a single-power substation is determined, and a closing instruction including the closing sequence is generated. The closing sequence is that each circuit breaker group of the same level is arranged in the first order, and each circuit breaker in the same circuit breaker group is arranged in the second order.

[0076] Based on the closing command, each circuit breaker is automatically closed in the closing sequence.

[0077] It should be noted that in practical applications, closing the load-side circuit breaker will connect the transformer to a large number of loads. If the bus-side circuit breaker is closed at this time, the instantaneous current in the line will be very large. This large current will directly damage the line and electrical equipment. Therefore, to avoid damage to the electrical equipment and line from the instantaneous current, it is necessary to close all circuit breakers on the bus side first.

[0078] It should be noted that a substation may have outgoing lines of multiple voltage levels. To avoid impacting the power grid during power transmission, each circuit breaker group of the same level needs to be energized sequentially according to its voltage level. For example, if a single-power substation has two outgoing lines, one 35kV and one 10kV, then during closing, the circuit breakers corresponding to the 35kV outgoing line should be closed first, sequentially from the bus side to the load side. After the circuit breakers corresponding to the 35kV outgoing line have been closed, the circuit breakers corresponding to the 10kV outgoing line should be closed sequentially.

[0079] It should be noted that, in practical applications, there are multiple implementation methods for determining the closing sequence of circuit breakers in a single-power-supply substation based on the closing sequence identifier group of each circuit breaker. One such method is provided here as an example:

[0080] like Figure 2 The diagram shown is a wiring diagram of the target single-power-source substation.

[0081] It should be noted that, as Figure 2 The wiring diagram shown is only for illustrating the closing sequence of each circuit breaker, therefore it is only used in... Figure 2 The text shows transformers, circuit breakers, and lines. Electrical components such as capacitors, instrument transformers, and surge arresters are omitted for ease of description and understanding.

[0082] like Figure 2The single-power substation shown has an incoming voltage level of 110kV. This single-power substation is equipped with two outgoing lines, with voltage levels of 35kV and 10kV respectively.

[0083] Depend on Figure 2 Based on the positional relationship between each circuit breaker and the three-winding transformer 202, we can see that: the voltage level of circuit breaker 201 is 110kV; the voltage level of circuit breaker 203 and circuit breaker 204 is 35kV; and the voltage level of circuit breaker 205 and circuit breaker 206 is 10kV.

[0084] The circuit breakers are then classified according to their voltage level designations, resulting in three groups of circuit breakers of the same level. The first group includes circuit breaker 1 (201). The second group includes circuit breakers 2 (203) and 3 (204). The third group includes circuit breakers 4 (205) and 5 (206). The second closing sequence is as follows: first, close the first group of circuit breakers; then, close the second group; and finally, close the third group.

[0085] Since the first group of circuit breakers in the same class consists of only one circuit breaker, there is no need to determine the closing sequence of the circuit breakers in the group.

[0086] For the first closing sequence of the second group of circuit breakers of the same level, since circuit breaker 203 is located on the busbar side of circuit breaker 304, circuit breaker 203 closes before circuit breaker 304. Similarly, for the first closing sequence of the third group of circuit breakers of the same level, since circuit breaker 405 is located on the busbar side of circuit breaker 506, circuit breaker 205 closes before circuit breaker 506.

[0087] Based on the first and second closing sequences mentioned above, the closing sequence of each circuit breaker in the single-power substation is determined as follows: First, close circuit breaker 1 (201), then close circuit breaker 2 (203), circuit breaker 3 (204), circuit breaker 4 (205), and circuit breaker 5 (206) in sequence.

[0088] Optionally, determine whether the equipment status of each circuit breaker meets the preset closing status rules, including:

[0089] For each circuit breaker:

[0090] Read the device status identifier of the circuit breaker, which includes: fault identifier and open / closed status identifier;

[0091] Determine if the fault identifier is empty; if so, determine that the circuit breaker's equipment status meets the fault-free rule in the preset closing status rules.

[0092] Determine whether the open / closed status indicator indicates that the circuit breaker is in the open state. If so, determine that the equipment status of the circuit breaker meets the on / off rule in the preset closing status rule.

[0093] If the equipment status meets the fault-free rule and the preset on / off rule, the equipment status of the circuit breaker is determined to meet the preset closing status rule.

[0094] Optionally, the steps for determining whether the equipment status of each circuit breaker meets the preset closing status rules further include:

[0095] If the fault identifier is not empty, read the fault code and station number of the circuit breaker to determine the fault type corresponding to the fault code; send an alarm command including the fault type and station number to the alarm device so that the alarm device responds to the alarm command and starts to alarm, and displays the fault type and station number of the circuit breaker.

[0096] Optionally, in one alternative embodiment of the present invention, the aforementioned fault codes and station numbers may be data from the equipment management list in the substation monitoring system.

[0097] Optionally, in one alternative embodiment of the present invention, the alarm device described above may be an alarm unit configured in a substation monitoring system.

[0098] Optionally, the above are as follows: Figure 1 The automatic closing control method for substation circuit breakers shown also includes:

[0099] When at least one of the first adjacent disconnecting switch and the second adjacent disconnecting switch is not in the closed state, the operating state of the circuit breaker is determined to be the prohibited closing state, and the operating status identifier of the adjacent disconnecting switch that is not in the closed state is read.

[0100] When the working status is marked as normal, a closing command is sent to the adjacent disconnector that is not in a closed state, so that the adjacent disconnector that is not in a closed state closes in response to the closing command.

[0101] Return to the step of determining whether both the first adjacent disconnect switch and the second adjacent disconnect switch are in the closed state.

[0102] It should be noted that by monitoring the closing status of adjacent disconnect switches, this invention can reduce the risk of power supply failure due to disconnect switch malfunction.

[0103] Corresponding to the above method embodiments, the present invention also provides a measurement and control device, such as... Figure 3 As shown, this monitoring and control equipment is for a single-power substation and includes:

[0104] The circuit breaker detection module 301 is used to respond to the automatic closing command input from the measurement and control equipment and determine whether the equipment status of each circuit breaker meets the preset closing status rules.

[0105] The condition judgment module 302 is used to determine whether the first adjacent disconnect switch and the second adjacent disconnect switch are both in the closed state for each circuit breaker when the operating state of each circuit breaker meets the preset closing state rules. If so, the operating state of the circuit breaker is determined as the waiting-to-close state. The first adjacent disconnect switch is the first disconnect switch near the busbar side of the circuit breaker, and the second adjacent disconnect switch is the first disconnect switch near the load side of the circuit breaker.

[0106] The closing control module 303 is used to determine the closing sequence of each circuit breaker in a single-power substation based on the closing sequence identifier group of each circuit breaker when all circuit breakers are in the waiting-to-close state, and to generate a closing command including the closing sequence, and to control each circuit breaker to automatically close according to the closing sequence based on the closing command.

[0107] Optionally, the closing control module 303 described above is configured as follows:

[0108] The circuit breakers are classified according to their voltage level identifiers to obtain multiple circuit breaker groups of the same level. The voltage level identifiers of the circuit breakers in the same level group are the same, and the voltage level identifier is one of the identifiers in the closing sequence identifier group of each circuit breaker.

[0109] For each circuit breaker group of the same level: based on the line location identifier of each circuit breaker in the same level circuit breaker group, the circuit breakers in the same level circuit breaker group are sorted in the order from the bus side to the load side to obtain the first closing sequence of each circuit breaker in the same level circuit breaker group. The line location identifier is another identifier in the closing sequence identifier group of the circuit breaker.

[0110] Based on the voltage level identification of each circuit breaker group of the same level, the circuit breaker groups of the same level are sorted in order from high voltage side to low voltage side to obtain the second closing sequence.

[0111] Based on the first closing sequence and the second closing sequence, the closing sequence of each circuit breaker in a single-power substation is determined, and a closing instruction including the closing sequence is generated. The closing sequence is that each circuit breaker group of the same level is arranged in the first order, and each circuit breaker in the same circuit breaker group is arranged in the second order.

[0112] Based on the closing command, each circuit breaker is automatically closed in the closing sequence.

[0113] Optionally, the circuit breaker detection module 301 described above is configured as follows:

[0114] For each circuit breaker:

[0115] Read the device status identifier of the circuit breaker, which includes: fault identifier and open / closed status identifier;

[0116] Determine if the fault identifier is empty; if so, determine that the circuit breaker's equipment status meets the fault-free rule in the preset closing status rules.

[0117] Determine whether the open / closed status indicator indicates that the circuit breaker is in the open state. If so, determine that the equipment status of the circuit breaker meets the on / off rule in the preset closing status rule.

[0118] If the equipment status meets the fault-free rule and the preset on / off rule, the equipment status of the circuit breaker is determined to meet the preset closing status rule.

[0119] Optionally, the circuit breaker detection module 301 described above is also configured as follows:

[0120] If the fault identifier is not empty, read the fault code and station number of the circuit breaker to determine the fault type corresponding to the fault code; send an alarm command including the fault type and station number to the alarm device so that the alarm device responds to the alarm command and starts to alarm, and displays the fault type and station number of the circuit breaker.

[0121] Optionally, the above condition judgment module 302 is also configured as follows:

[0122] When at least one of the first adjacent disconnecting switch and the second adjacent disconnecting switch is not in the closed state, the operating state of the circuit breaker is determined to be the prohibited closing state, and the operating status identifier of the adjacent disconnecting switch that is not in the closed state is read.

[0123] When the working status is marked as normal, a closing command is sent to the adjacent disconnector that is not in a closed state, so that the adjacent disconnector that is not in a closed state closes in response to the closing command.

[0124] Return to the step of determining whether both the first adjacent disconnect switch and the second adjacent disconnect switch are in the closed state.

[0125] This invention also provides a computer storage medium, which, when the instructions in the computer storage medium are executed by the processor of the measurement and control equipment, enables the measurement and control equipment to execute the automatic closing control method for substation circuit breakers as described above.

[0126] In a typical configuration, the device includes one or more processors (CPUs), memory, and a bus. The device may also include input / output interfaces, network interfaces, etc.

[0127] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, like read-only memory (ROM) or flash RAM, and memory includes at least one memory chip. Memory is an example of computer-readable media.

[0128] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0129] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0130] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0131] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0132] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An automatic closing control method for a substation circuit breaker, characterized in that, A measurement and control device applied to a single-power-supply substation, the method comprising: In response to the input automatic closing command from the monitoring and control equipment, determine whether the equipment status of each circuit breaker meets the preset closing status rules; When the operating state of each circuit breaker meets the preset closing state rule, for each circuit breaker: determine whether the first adjacent disconnect switch and the second adjacent disconnect switch are both in the closed state. If so, the operating state of the circuit breaker is determined to be the waiting-to-close state. The first adjacent disconnect switch is the first disconnect switch near the busbar side of the circuit breaker, and the second adjacent disconnect switch is the first disconnect switch near the load side of the circuit breaker. When all the circuit breakers are in the waiting-to-close state, the closing sequence of each circuit breaker in the single-power substation is determined according to the closing sequence identifier group of each circuit breaker, and a closing command including the closing sequence is generated. Based on the closing command, each circuit breaker is controlled to automatically close according to the closing sequence. The closing sequence identifier group consists of a voltage level identifier and a line location identifier. When all the circuit breakers are in the pending closing state, the closing sequence of each circuit breaker within the single-power substation is determined based on the closing sequence identifier group of each circuit breaker, and a closing command including the closing sequence is generated. Based on the closing command, each circuit breaker is automatically closed according to the closing sequence, including: The circuit breakers are classified according to the voltage level identifier to obtain multiple circuit breaker groups of the same level, wherein the voltage level identifiers of the circuit breakers in the same level group are the same. For each circuit breaker group of the same level: according to the line position identifier of each circuit breaker in the same level circuit breaker group, the circuit breakers in the same level circuit breaker group are sorted in order from the bus side to the load side to obtain the first closing sequence of each circuit breaker in the same level circuit breaker group. Based on the voltage level identification of each circuit breaker group of the same level, the circuit breaker groups of the same level are sorted in order from high voltage side to low voltage side to obtain the second closing sequence. Based on the first closing sequence and the second closing sequence, the closing sequence of each circuit breaker in the single-power substation is determined, and a closing instruction including the closing sequence is generated. The closing sequence is that each circuit breaker group of the same level is arranged in sequence according to the second closing sequence, and each circuit breaker in the same circuit breaker group of the same level is arranged in sequence according to the first closing sequence. Based on the closing command, each circuit breaker is controlled to automatically close in the closing sequence.

2. The method according to claim 1, characterized in that, The determination of whether the equipment status of each circuit breaker meets the preset closing status rules includes: For each circuit breaker: Read the device status identifier of the circuit breaker, which includes: fault identifier and open / closed status identifier; Determine whether the fault identifier is empty. If it is, determine that the equipment status of the circuit breaker satisfies the fault-free rule in the preset closing status rule. Determine whether the open / closed status indicator indicates that the circuit breaker is in the open state. If so, determine that the equipment status of the circuit breaker satisfies the on / off rule in the preset closing status rule. If the device status satisfies both the fault-free rule and the preset on / off rule, then the device status of the circuit breaker is determined to satisfy the preset closing status rule.

3. The method according to claim 2, characterized in that, Also includes: If the fault identifier is not empty, read the fault code and station number of the circuit breaker to determine the fault type corresponding to the fault code; An alarm command including the fault type and the station number is sent to the alarm device, so that the alarm device responds to the alarm command, starts an alarm, and displays the fault type and the station number of the circuit breaker.

4. The method according to claim 1, characterized in that, The method further includes: When at least one of the first adjacent disconnecting switch and the second adjacent disconnecting switch is not in the closed state, the operating state of the circuit breaker is determined to be a prohibited closing state, and the operating status identifier of the adjacent disconnecting switch that is not in the closed state is read. When the working status identifier is a normal status identifier, a closing command is sent to the adjacent disconnect switch that is not in the closed state, so that the adjacent disconnect switch that is not in the closed state closes in response to the closing command; Return to the step of determining whether both the first adjacent disconnect switch and the second adjacent disconnect switch are in the closed state.

5. A measurement and control device, characterized in that, The measurement and control equipment is for a single-power substation, and the measurement and control equipment includes: The circuit breaker detection module is used to respond to the automatic closing command input by the measurement and control equipment and determine whether the equipment status of each circuit breaker meets the preset closing status rules. The condition judgment module is used to determine whether the first adjacent disconnect switch and the second adjacent disconnect switch are both in the closed state for each circuit breaker when the operating state of each circuit breaker meets the preset closing state rule. If so, the operating state of the circuit breaker is determined to be the waiting-to-close state. The first adjacent disconnect switch is the first disconnect switch near the busbar side of the circuit breaker, and the second adjacent disconnect switch is the first disconnect switch near the load side of the circuit breaker. The closing control module is used to determine the closing sequence of each circuit breaker in the single-power substation according to the closing sequence identifier group of each circuit breaker when the operating state of each circuit breaker is the waiting-to-close state, and to generate a closing command including the closing sequence, and to control each circuit breaker to automatically close according to the closing sequence based on the closing command. The closing control module is configured as follows: The circuit breakers are classified according to their voltage level identifiers to obtain multiple circuit breaker groups of the same level. The voltage level identifiers of the circuit breakers in the same level group are the same, and the voltage level identifier is one of the identifiers in the closing sequence identifier group of each circuit breaker. For each circuit breaker group of the same level: according to the line position identifier of each circuit breaker in the same level circuit breaker group, the circuit breakers in the same level circuit breaker group are sorted in order from the bus side to the load side to obtain the first closing sequence of each circuit breaker in the same level circuit breaker group, wherein the line position identifier is another identifier in the closing sequence identifier group of the circuit breaker. Based on the voltage level identification of each circuit breaker group of the same level, the circuit breaker groups of the same level are sorted in order from high voltage side to low voltage side to obtain the second closing sequence. Based on the first closing sequence and the second closing sequence, the closing sequence of each circuit breaker in the single-power substation is determined, and a closing instruction including the closing sequence is generated. The closing sequence is that each circuit breaker group of the same level is arranged in sequence according to the second closing sequence, and each circuit breaker in the same circuit breaker group of the same level is arranged in sequence according to the first closing sequence. Based on the closing command, each circuit breaker is controlled to automatically close in the closing sequence.

6. The measurement and control equipment according to claim 5, characterized in that, The circuit breaker detection module is configured as follows: For each circuit breaker: Read the device status identifier of the circuit breaker, which includes: fault identifier and open / closed status identifier; Determine whether the fault identifier is empty. If it is, determine that the equipment status of the circuit breaker satisfies the fault-free rule in the preset closing status rule. Determine whether the open / closed status indicator indicates that the circuit breaker is in the open state. If so, determine that the equipment status of the circuit breaker satisfies the on / off rule in the preset closing status rule. If the device status satisfies both the fault-free rule and the preset on / off rule, then the device status of the circuit breaker is determined to satisfy the preset closing status rule.

7. The measurement and control equipment according to claim 6, characterized in that, The circuit breaker detection module is also configured to: If the fault identifier is not empty, read the fault code and station number of the circuit breaker to determine the fault type corresponding to the fault code; An alarm command including the fault type and the station number is sent to the alarm device, so that the alarm device responds to the alarm command, starts an alarm, and displays the fault type and the station number of the circuit breaker.

8. A computer storage medium, characterized in that, When the instructions in the computer storage medium are executed by the processor of the measurement and control equipment, the measurement and control equipment is able to perform the automatic closing control method for the substation circuit breaker as described in any one of claims 1 to 4.

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