Optimal configuration method and system for 110kV bus merging unit of intelligent substation

Abstract

The invention relates to the technical field of intelligent substations, in particular to an optimal configuration method and system for 110kV bus merging units of an intelligent substation, and the method comprises the steps: enabling a first bus merging unit to provide corresponding bus voltage for each interval merging unit of each section of bus, providing corresponding bus voltage for the first set of main transformer merging units of all the main transformers, enabling the second bus merging unit to provide corresponding bus voltage for the second set of main transformer merging units of all the main transformers, and downloading the configuration of the second bus merging unit according to the configuration of the first bus merging unit; monitoring whether the first bus merging unit and the second bus merging unit have faults or not in real time; and after a certain bus merging unit fails, the other bus merging unit gives consideration to the work task of executing the failed bus merging unit. By adopting the method, the fault recovery time can be greatly shortened, and the fault influence range of the bus merging unit can be reduced.

Description

Technical Field

[0001] The present invention generally relates to the technical field of smart substations, and more specifically, to a method and system for optimizing configuration of 110kV busbar merging units in a smart substation. Background Art

[0002] 110kV substations are often used as terminal load stations in power grids. The 110kV voltage level in substations usually adopts bus segment wiring. The traditional bus merging unit configuration method is to set a bus merging unit for each bus segment. Each bus merging unit collects the voltage of the corresponding bus and provides cascade voltage for the interval merging unit and main transformer merging unit of the corresponding bus. In this way, once a bus merging unit fails, it will cause the corresponding bus intervals to lose voltage. The bus merging unit needs to be replaced and the configuration file needs to be downloaded and installed again. The fault recovery time is long, which has an adverse effect on the protection of the substation. In order to solve the problem of long recovery time after bus merging unit failure under the traditional bus merging unit configuration method, the usual practice is as follows Figure 1 As shown, it is assumed that the bus is divided into two sections, the first section of the bus is configured with a first bus merging unit, a first interval merging unit and a first main transformer merging unit; the second section of the bus is configured with a second bus merging unit, a second interval merging unit and a second main transformer merging unit; the first bus merging unit is configured to provide corresponding bus voltages to each interval of the first section of the bus (i.e., the first interval merging unit and the first main transformer merging unit), and to provide corresponding bus voltages to each interval of the second section of the bus (i.e., the second interval merging unit and the second main transformer merging unit); the second bus merging unit is used as a backup bus merging unit, and after the first bus merging unit fails, the second bus merging unit is put into use to provide corresponding cascade voltages to each interval of the first section of the bus and the second section of the bus; however, even if the backup bus merging unit is used, it is necessary to re-download the optical port configuration of each interval merging unit device and perform physical optical fiber connection, resulting in a relatively long fault recovery time and a large fault impact range. Summary of the invention

[0003] In order to solve the technical problems that, under the bus merging unit configuration mode in the prior art, the fault recovery time is still long and the fault impact range is large after a bus merging unit fails, the present invention provides solutions in the following aspects.

[0004] In a first aspect, the present invention provides a method for optimizing the configuration of a 110kV bus merging unit in a smart substation. In a bus segmented wiring scenario in a smart substation, a bus merging unit is configured at each voltage transformer interval of two bus segments, and two sets of main transformer merging units are configured for each main transformer of each bus segment. The method comprises:

[0005] The first bus merging unit provides the corresponding bus voltage to each interval merging unit of each bus section, provides the corresponding bus voltage to the first set of main transformer merging units of all main transformers, and the second bus merging unit provides the corresponding bus voltage to the second set of main transformer merging units of all main transformers, and the configuration of the second bus merging unit is downloaded according to the configuration of the first bus merging unit;

[0006] Real-time monitoring of whether the first busbar merging unit and the second busbar merging unit are faulty;

[0007] In response to a failure of the first bus merging unit, the second bus merging unit provides the corresponding bus voltage to each interval merging unit of each bus section, and provides the corresponding bus voltage to the two main transformer merging units of all main transformers; in response to a failure of the second bus merging unit, the first bus merging unit provides the corresponding bus voltage to each interval merging unit of each bus section, and provides the corresponding bus voltage to the two main transformer merging units of all main transformers.

[0008] In one embodiment, the second bus merging unit is connected to the intelligent device of the substation through direct measurement and control.

[0009] In one embodiment, under the condition that the main electrical connection mode of the substation is internal bridge connection, the method for the first bus merging unit and the second bus merging unit to collect bus voltage includes:

[0010] The voltage of the second bus section is collected in real time through the second bus voltage transformer, the voltage of the first incoming line is collected in real time through the first incoming line voltage transformer, and the voltage of the second incoming line is collected in real time through the second incoming line voltage transformer; the operation relationship between the main transformer on the first bus section and the main transformer on the second bus section is obtained; the first bus is connected to the first incoming line, and the second bus is connected to the second incoming line;

[0011] In response to the main transformer on the first bus section and the main transformer on the second bus section running in parallel, the collected voltage of the second bus section is used as the voltage of the first bus section.

[0012] In one embodiment, the method for collecting bus voltage by the first bus merging unit and the second bus merging unit further includes:

[0013] In response to the main transformer on the first bus section and the main transformer on the second bus section operating separately, the collected voltage of the first incoming line is used as the voltage of the first bus section.

[0014] In one embodiment, the first bus section is connected to the first incoming line through a first control switch, the second bus section is connected to the second incoming line through a second control switch, and the first bus section is connected to the second bus section through a third control switch; the method for collecting bus voltages by the first bus merging unit and the second bus merging unit also includes:

[0015] Real-time detection of the operating status of the second bus voltage transformer;

[0016] In response to a fault in the second bus voltage transformer, the second bus voltage transformer is removed from maintenance, the first control switch is controlled to be closed, the second control switch is controlled to be opened, and the third control switch is controlled to be closed; and the collected voltage of the first incoming line is used as the voltage of the second bus section and the first bus section.

[0017] In one embodiment, the configuration of the first bus merging unit is as follows: the first bus merging unit is respectively connected to a timing device, a backup automatic switching device, an integrated intelligent device on the 110kV side of the main transformer of the first bus section, and an integrated intelligent device on each incoming line of the substation; the first bus merging unit is also connected to a process layer switch, and the process layer switch is connected to an intelligent terminal on the first bus section.

[0018] In a second aspect, the present invention provides a smart substation 110kV bus merging unit optimization configuration system, comprising a processor and a memory, wherein the memory stores computer program instructions, and when the computer program instructions are executed by the processor, the smart substation 110kV bus merging unit optimization configuration method of the present invention is implemented.

[0019] The beneficial effects of the present invention are as follows: the 110kV busbar merging unit optimization configuration method of the intelligent substation of the present invention, when protecting the substation, enables the first busbar merging unit to provide the corresponding busbar voltage to each interval merging unit of each bus section, provides the corresponding busbar voltage to the first set of main transformer merging units of all main transformers, and enables the second busbar merging unit to provide the corresponding busbar voltage to the second set of main transformer merging units of all main transformers. The two busbar merging units are used in conjunction to perform different tasks respectively. When one of the busbar merging units fails, only the busbar voltage collected by the merging unit connected to the busbar merging unit will be abnormal, and will not affect the collection of the busbar voltage of the merging unit connected to the other set of busbar merging units, so that the impact range of the busbar merging unit failure is greatly reduced; in addition, when one of the busbar merging units fails, another set of merging units is immediately used to perform the task of the busbar merging unit, which greatly shortens the fault recovery time, thereby realizing that the two sets of busbar merging units serve as backup for each other without increasing cost investment, and greatly improving the stability of substation operation.

[0020] Furthermore, by connecting the second bus merging unit to the intelligent device of the substation through direct measurement and control, the second bus merging unit does not need to set up a networking link, thereby preventing MAC address conflicts, and when the first bus merging unit fails, it can quickly switch to the second bus merging unit, greatly reducing the impact time of the failure.

[0021] Furthermore, the 110kV inner bridge substation is a substation with a special wiring method, and its operation mode is more complex and changeable than that of a general station. The primary equipment of the indoor 110kV inner bridge substation will use GIS equipment, and the GIS equipment must be equipped with a line voltage transformer (PT) for operational safety. At this time, the bus voltage transformer is often reduced. The bus voltage acquisition method of this embodiment can be realized under the condition of only setting one bus voltage transformer. At the same time, the voltage of the second section of the bus, the voltage of the first section of the bus, the voltage of the first incoming line, and the voltage of the second incoming line can be collected to ensure the correct operation of the backup automatic switching device; without increasing the equipment investment, it can adapt to the adaptive switching of the bus voltage.

[0022] Furthermore, in the case that the second bus voltage transformer fails and exits maintenance, the two main transformers are switched to parallel operation, so that the voltage of the first bus and the voltage of the second bus can be collected normally, ensuring the normal operation of the substation's backup automatic switching devices. At this time, if a permanent fault occurs in the first incoming line, the first control switch trips, and the second control switch is closed to restore the power supply in the station, which will not affect the normal operation of the primary equipment, but the bus merging unit voltage cannot be collected normally, and the second incoming line voltage transformer needs to be temporarily merged into the bus voltage for use to ensure the safe and stable operation of the voltage type protection of the main transformer protection and other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0024] Figure 1 is a schematic diagram schematically showing a busbar merging unit configuration method in the prior art;

[0025] Figure 2 is a flow chart schematically showing a method for optimizing configuration of 110kV busbar merging units in a smart substation according to an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram schematically showing a main electrical connection mode of a substation according to an embodiment of the present invention;

[0027] Figure 4It is a schematic diagram showing the structure of an optimal configuration system of a 110kV bus merging unit of a smart substation according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0029] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Implementation example of optimization configuration method for 110kV busbar merging unit in smart substation:

[0031] like Figure 2 As shown, the present invention provides a method for optimizing the configuration of 110kV bus merging units in a smart substation. In a bus segmented wiring scenario in a smart substation, a bus merging unit is configured at each voltage transformer interval of two bus segments, and two sets of main transformer merging units are configured for the main transformer of each bus segment. The method includes:

[0032] S101, dividing the tasks of the two bus merging units, specifically: making the first bus merging unit provide the corresponding bus voltage to each interval merging unit of each bus section, and providing the corresponding bus voltage to the first set of main transformer merging units of all main transformers, making the second bus merging unit provide the corresponding bus voltage to the second set of main transformer merging units of all main transformers, and downloading the configuration of the second bus merging unit according to the configuration of the first bus merging unit;

[0033] The busbar segment can be divided into two or three sections. In one embodiment, the busbar segment is divided into two sections, namely the first busbar segment and the second busbar segment. The first busbar merging unit and the second busbar merging unit are respectively arranged on the first busbar segment and the second busbar segment. The configuration of the second busbar merging unit is installed according to the configuration of the first busbar merging unit. The second busbar merging unit is arranged in the voltage transformer interval of the second busbar segment. In another embodiment, the busbar segment is the first busbar segment, the second busbar segment and the third busbar segment. The first busbar merging unit and the second busbar merging unit are respectively arranged only on the first busbar segment and the second busbar segment. There is no need to arrange the busbar merging unit on the third busbar segment. The configuration of the second busbar merging unit is installed according to the configuration of the first busbar merging unit. The first busbar merging unit is arranged in the voltage transformer interval of the first busbar segment, and the second busbar merging unit is arranged in the voltage transformer interval of the second busbar segment.

[0034] Since the configurations of the two busbar merging units are the same, the two busbar merging units are connected to the same substation equipment.

[0035] S102, monitor in real time whether the first bus merging unit and the second bus merging unit are faulty.

[0036] A fault recording device can be used to receive the amount of sampled value messages sent by the bus merging unit per unit time and the signal of the sampled value message sent by the bus merging unit, and the sampled value message amount is formed into first recording data, and the signal of the sampled value message sent by the bus merging unit is formed into second recording data, and then whether the bus merging unit is operating normally is evaluated based on the first recording data and the second recording data.

[0037] S103. After a bus merging unit fails, another bus merging unit is enabled to perform the work tasks of the failed bus merging unit. Specifically, in response to a failure of the first bus merging unit, the second bus merging unit is enabled to provide the corresponding bus voltage to each interval merging unit of each bus section, and provide the corresponding bus voltage to the two main transformer merging units of all main transformers; in response to a failure of the second bus merging unit, the first bus merging unit is enabled to provide the corresponding bus voltage to each interval merging unit of each bus section, and provide the corresponding bus voltage to the two main transformer merging units of all main transformers.

[0038] In the traditional bus merging unit configuration method, once a bus merging unit in use fails, the 110kV line protection bus voltage will fail completely. The impact range is large and the fault recovery time is long due to the need to replace plug-ins and download configuration files, which will cause various protection functions of the substation to fail, affecting the safe and reliable operation of the substation. The method for optimizing the configuration of 110kV busbar merging units of an intelligent substation of the present invention provides a first busbar merging unit with a corresponding busbar voltage to each interval merging unit of each busbar section, provides a corresponding busbar voltage to the first set of main transformer merging units of all main transformers, and provides a second busbar merging unit with a corresponding busbar voltage to the second set of main transformer merging units of all main transformers when protecting the substation. The two busbar merging units are used in coordination to perform different tasks respectively. When one of the busbar merging units fails, only the busbar voltage collected by the merging unit connected to the busbar merging unit will be abnormal, and the collection of the busbar voltage of the merging unit connected to the other busbar merging unit will not be affected, thereby greatly reducing the impact range of the busbar merging unit failure. In addition, when one of the busbar merging units fails, another set of merging units is immediately used to perform the task of the busbar merging unit, thereby realizing that the two sets of busbar merging units serve as backup for each other without increasing cost investment, thereby greatly improving the stability of substation operation.

[0039] In one embodiment, the second bus merging unit is connected to the intelligent device of the substation through direct measurement and control.

[0040] By connecting the second bus merging unit to the intelligent equipment of the substation through direct measurement and control, the second bus merging unit does not need to set up a networking link, thereby preventing MAC address conflicts. When the first bus merging unit fails, it can quickly switch to the second bus merging unit, greatly reducing the impact time of the failure.

[0041] In one embodiment, under the condition that the main electrical connection mode of the substation is internal bridge connection, the method for the first bus merging unit and the second bus merging unit to collect bus voltage includes:

[0042] S201, such as Figure 3 As shown, the voltage of the second bus B is collected in real time through the second bus voltage transformer PT3, the voltage of the first incoming line C is collected in real time through the first incoming line voltage transformer PT1, and the voltage of the second incoming line D is collected in real time through the second incoming line voltage transformer PT2; the operating relationship between the main transformer T1 on the first bus A and the main transformer T2 on the second bus is obtained; the first bus is connected to the first incoming line, and the second bus is connected to the second incoming line;

[0043] S202: In response to the main transformer on the first bus section and the main transformer on the second bus section operating in parallel, using the collected voltage of the second bus section as the voltage of the first bus section.

[0044] In this embodiment, the first bus A is connected to the first incoming line C through the first control switch Q1, the first bus A is connected to the second bus B through the third control switch Q3, and the second bus B is connected to the second incoming line D through the second control switch Q2.

[0045] In the case of parallel operation, one incoming line carries two main transformers. There are two ways to operate one incoming line with two main transformers. The first way is: the first control switch Q1 and the third control switch Q3 are closed, and the second control switch Q2 is disconnected. The second way is: the second control switch Q2 and the third control switch Q3 are closed, and the first control switch Q1 is disconnected. In these two ways, the first bus section A is connected to the second bus section B, and the voltage of the first bus section is equal to the voltage of the second bus section. Therefore, the collected voltage of the second bus section can be used as the voltage of the first bus section.

[0046] During operation, if the third control switch Q3 is disconnected for some reason (such as tripping), the parallel function fails and the secondary voltage of the first bus section can be automatically switched to the voltage of the first incoming line.

[0047] The 110kV inner bridge substation is a substation with a special wiring method, and its operation mode is more complex and changeable than that of a general station. The primary equipment of the indoor 110kV inner bridge substation will use GIS equipment, and the GIS equipment must be equipped with a line voltage transformer (PT) for operational safety. At this time, the bus voltage transformer is often reduced. The bus voltage acquisition method of this embodiment can be realized under the condition of only setting one bus voltage transformer. At the same time, the voltage of the second section of the bus, the voltage of the first section of the bus, the voltage of the first incoming line, and the voltage of the second incoming line can be collected to ensure the correct operation of the backup automatic switching device; without increasing the equipment investment, it can adapt to the adaptive switching of the bus voltage.

[0048] In one embodiment, the method for collecting bus voltage by the first bus merging unit and the second bus merging unit further includes:

[0049] In response to the main transformer on the first bus section and the main transformer on the second bus section operating separately, the collected voltage of the first incoming line is used as the voltage of the first bus section.

[0050] When the main transformer on the first bus section and the main transformer on the second bus section are operated separately, the first control switch Q1 and the second control switch Q2 are in a closed state, and the third control switch Q3 is in an open state.

[0051] In one embodiment, the first bus section is connected to the first incoming line through a first control switch, the second bus section is connected to the second incoming line through a second control switch, and the first bus section is connected to the second bus section through a third control switch; the method for collecting bus voltages by the first bus merging unit and the second bus merging unit also includes:

[0052] S301. Detect the operating status of the second bus voltage transformer in real time.

[0053] S302. In response to a fault in the second bus voltage transformer, the second bus voltage transformer is removed from maintenance, the first control switch is controlled to be closed, the second control switch is controlled to be opened, and the third control switch is controlled to be closed; and the collected voltage of the first incoming line is used as the voltage of the second bus section and the first bus section.

[0054] By controlling the first control switch to be closed, the second control switch to be opened, and the third control switch to be closed, power is supplied by the first incoming line as the main power supply.

[0055] By adopting the bus voltage collection method of this embodiment, when the second bus voltage transformer fails and exits maintenance, the two main transformers are switched to parallel operation, so that the voltage of the first bus and the voltage of the second bus are normally collected to ensure the normal operation of the substation's backup automatic switching devices. At this time, if a permanent fault occurs in the first incoming line, the first control switch trips, and the second control switch is closed to restore the power supply in the station, which will not affect the normal operation of the primary equipment, but the bus merging unit voltage cannot be collected normally, and the second incoming line voltage transformer needs to be temporarily merged into the bus voltage for use to ensure the safe and stable operation of the voltage type protection of the main transformer protection and other devices.

[0056] In one embodiment, the configuration of the first bus merging unit is as follows: the first bus merging unit is respectively connected to a timing device, a backup automatic switching device, an integrated intelligent device on the 110kV side of the main transformer of the first bus section, and an integrated intelligent device on each incoming line of the substation; the first bus merging unit is also connected to a process layer switch, and the process layer switch is connected to an intelligent terminal on the first bus section.

[0057] Implementation example of the optimization configuration system for 110kV busbar merging unit in smart substation:

[0058] The present invention also provides a smart substation 110kV busbar merging unit optimization configuration system. Figure 4 As shown, the smart substation 110kV bus merging unit optimization configuration system includes a processor and a memory, and the memory stores computer program instructions. When the computer program instructions are executed by the processor, the smart substation 110kV bus merging unit optimization configuration method described in the above embodiment is implemented.

[0059] The smart substation 110kV bus merging unit optimization configuration system also includes other components familiar to those skilled in the art, such as a communication bus and a communication interface, whose settings and functions are known in the art and will not be described in detail here.

[0060] In the present invention, the aforementioned memory may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, apparatus or device. For example, a computer-readable storage medium may be any suitable magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory RRAM (Resistive Random Access Memory), a dynamic random access memory DRAM (Dynamic Random Access Memory), a static random access memory SRAM (Static Random-Access Memory), an enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), a high-bandwidth memory HBM (High-Bandwidth Memory), a hybrid memory cube HMC (Hybrid Memory Cube), etc., or any other medium that may be used to store the required information and may be accessed by an application, a module, or both. Any such computer storage medium may be part of a device or accessible or connectable to a device. Any application or module described in the present invention may be implemented using computer-readable / executable instructions that may be stored or otherwise maintained by such a computer-readable medium.

[0061] In the description of this specification, "plurality" or "several" means at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0062] Although this specification has shown and described a number of embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will conceive of many modifications, changes and alternatives without departing from the ideas and spirit of the present invention. It should be understood that in the practice of the present invention, various alternatives to the embodiments of the present invention described herein may be employed.

Claims

1. A method for optimizing the configuration of 110kV busbar merging units in a smart substation, characterized in that: In the scenario of bus segmented connection in the smart substation, a bus merging unit is configured at each voltage transformer interval of two bus segments, and two sets of main transformer merging units are configured for the main transformer of each bus segment. The method includes: The first bus merging unit provides the corresponding bus voltage to each interval merging unit of each bus section, provides the corresponding bus voltage to the first set of main transformer merging units of all main transformers, and the second bus merging unit provides the corresponding bus voltage to the second set of main transformer merging units of all main transformers, and the configuration of the second bus merging unit is downloaded according to the configuration of the first bus merging unit; Real-time monitoring of whether the first busbar merging unit and the second busbar merging unit are faulty; In response to a failure of the first bus merging unit, the second bus merging unit provides the corresponding bus voltage to each interval merging unit of each bus section, and provides the corresponding bus voltage to the two main transformer merging units of all main transformers; in response to a failure of the second bus merging unit, the first bus merging unit provides the corresponding bus voltage to each interval merging unit of each bus section, and provides the corresponding bus voltage to the two main transformer merging units of all main transformers.

2. The method for optimizing configuration of 110kV busbar merging units in a smart substation according to claim 1, characterized in that: The second busbar merging unit is connected to the intelligent equipment of the substation through direct measurement and control.

3. The method for optimizing configuration of 110kV busbar merging units in a smart substation according to claim 2, characterized in that: Under the condition that the main electrical connection mode of the substation is internal bridge connection, the method for collecting bus voltage by the first bus merging unit and the second bus merging unit includes: The voltage of the second bus section is collected in real time through the second bus voltage transformer, the voltage of the first incoming line is collected in real time through the first incoming line voltage transformer, and the voltage of the second incoming line is collected in real time through the second incoming line voltage transformer; the operation relationship between the main transformer on the first bus section and the main transformer on the second bus section is obtained; the first bus is connected to the first incoming line, and the second bus is connected to the second incoming line; In response to the main transformer on the first bus section and the main transformer on the second bus section running in parallel, the collected voltage of the second bus section is used as the voltage of the first bus section.

4. The method for optimizing configuration of 110kV busbar merging units in a smart substation according to claim 3, characterized in that: The method for collecting bus voltage by the first bus merging unit and the second bus merging unit further includes: In response to the main transformer on the first bus section and the main transformer on the second bus section operating separately, the collected voltage of the first incoming line is used as the voltage of the first bus section.

5. The method for optimizing configuration of 110kV busbar merging units in a smart substation according to claim 4, characterized in that: The first bus section is connected to the first incoming line through a first control switch, the second bus section is connected to the second incoming line through a second control switch, and the first bus section is connected to the second bus section through a third control switch; The method for collecting bus voltage by the first bus merging unit and the second bus merging unit further includes: Real-time detection of the operating status of the second bus voltage transformer; In response to a fault in the second bus voltage transformer, the second bus voltage transformer is removed from maintenance, the first control switch is controlled to be closed, the second control switch is controlled to be opened, and the third control switch is controlled to be closed; and the collected voltage of the first incoming line is used as the voltage of the second bus section and the first bus section.

6. The method for optimizing configuration of 110kV busbar merging units in a smart substation according to any one of claims 1 to 5, characterized in that: The configuration method of the first bus merging unit is: the first bus merging unit is respectively connected to the timing device, the backup automatic switching device, the integrated intelligent device on the 110kV side of the main transformer of the first section of the bus, and the integrated intelligent device on each incoming line of the substation; the first bus merging unit is also connected to the process layer switch, and the process layer switch is connected to the intelligent terminal on the first section of the bus.

7. A smart substation 110kV busbar merging unit optimization configuration system, characterized in that: The invention comprises a processor and a memory, wherein the memory stores computer program instructions, and when the computer program instructions are executed by the processor, the method for optimizing configuration of 110kV bus merging units of a smart substation according to any one of claims 1 to 6 is implemented.

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