Method for expanding control capability of type III special transformer terminal and remote control system for transformer area

Abstract

The present invention belongs to the field of power equipment, and specifically relates to a method for expanding the control capability of a type III special transformer terminal and a remote control system for a substation. The method performs internal software upgrades and external control channel expansion on the type III special transformer terminal. The expansion module is connected to the type III special transformer terminal through the RS485‑2 port, the protocol of the internal software of the type III special transformer terminal is upgraded, and a direct closing function is added to realize remote direct closing. The present invention also redefines the round expansion of the expansion module by the type III special transformer terminal, thereby allowing multiple expansion modules to be connected externally. In the expansion terminal used in this embodiment, each expansion module can realize the control of 4 channels. Therefore, the control channel of the type III special transformer terminal is greatly expanded, and the file collection and remote control opening and closing control capabilities of the type III special transformer terminal are enhanced. It can meet the growing management needs of the power grid.

Description

Technical Field

[0001] The present invention belongs to the field of electric power equipment, and in particular relates to a method for extending the control capability of a type III dedicated transformer terminal and a remote control system for a transformer substation. Background Art

[0002] In the current power control and collection system, the mature load control architecture of "collection master station + dedicated transformer terminal + load switch" is relied on. This architecture supports the management of hundreds of millions of power users. There are three types of dedicated transformer terminals in widespread use, namely Type I, Type II and Type III. Among them, Type III dedicated transformer terminals only have 2-way load capacity and insufficient number of control channels. In addition, in the actual remote control opening and closing process, Type III dedicated transformer terminals only support the method of manual closing on site after allowing closing, which can no longer meet the needs of orderly power consumption and demand-side management. Summary of the invention

[0003] In order to solve the problem that the existing Type III special transformer terminal has insufficient load capacity and does not support remote opening and closing, the present invention provides a method for expanding the control capability of the Type III special transformer terminal and a remote control system for a substation.

[0004] The scheme of the present invention is as follows:

[0005] A method for extending the control capability of a type III dedicated transformer terminal comprises the following steps:

[0006] S1: Connect multiple expansion modules to the Type III dedicated transformer terminal via the RS-485-2 interface, and number each expansion module in sequence.

[0007] S2: Calculate the extended theoretical value of the control round of the Type III dedicated transformer terminal according to the number of extension modules, and preset the control round of each extension module connected to the Type III dedicated transformer terminal.

[0008] S3: Configure each extension module as an additional object of the Type III special transformer terminal collection file as a device type; and update the additional object protocol item after the Type III special transformer terminal is expanded.

[0009] Among them, the object identifier OI in the additional object protocol item is 4036, the interface class IC is 8, and the attribute is 2, that is, the collection file additional object, and the type is defined as "special transformer control extension module".

[0010] S4: Obtain the communication address of each expansion module, and then according to the preset control rounds and additional object protocol items, configure all connected expansion terminals according to different collection file numbers to the server of the main station responsible for managing the Type III special transformer terminal, and the main station will operate and manage it through the Type III special transformer terminal.

[0011] As a further improvement of the present invention, in step S2, when the number of expansion modules connected to the type III dedicated transformer terminal is N, the expansion theoretical value is 4N+2. The control rounds of the i-th expansion module correspond to: (4i-3)~4i, and the control rounds of the two control units on the type III dedicated transformer terminal body are recorded as 4N+1 and 4N+2.

[0012] As a further improvement of the present invention, in step S4, the operation management supported by the extended type III dedicated transformer terminal includes remote control opening and closing. The process of updating the type III dedicated transformer terminal to realize remote control opening and closing requires updating the closing protocol to add a closing instruction, including, in the internal protocol, the object identifier OI=8000, the interface class IC=8, and the object name is remote control.

[0013] Among them, in the remote control method class, the method 129 supporting remote opening is retained; the parameters in the existing closing command method 130 are extended to allow remote direct closing on the basis of supporting on-site manual closing. In the extended protocol, the parameters of method 130 are updated to {remote control unit OAD, command enum {closing allowed (0), direct closing (1)}}.

[0014] As a further improvement of the present invention, in the parameters of the updated method 130, "remote control unit OAD" is used to characterize the object of the operation, wherein the remote control unit refers to the use of relays to perform opening and closing operations; OAD refers to the designated relay that performs the action.

[0015] "Command enum{closing allowed (0), direct closing (1)}" refers to the operation performed on the operation object, including allowing on-site closing and direct remote closing; when the command = 0, it means allowing on-site closing, and when the command = 1, it means remote direct closing, that is, only one of the two instructions is valid at the same time.

[0016] As a further improvement of the present invention, the management strategy of the control rounds of each extended remote control unit by the type III dedicated transformer terminal is as follows:

[0017] Each expansion module supports 8 relay outputs, the first 1-4 are opening relay outputs, and the last 1-4 are closing relay outputs. An opening relay and a corresponding closing relay jointly control the opening and closing operations of one load. Each control sequence includes the output of a group of opening relays and closing relays;

[0018] The Type III special transformer terminal includes 2 trip relay outputs, which are only used to realize the trip function.

[0019] Among them, the code of each expansion module is defined as 1-N, then the control rounds of the remote control opening and closing operations of the i-th expansion module are recorded as: 8(i-1)+1 to 8(i-1)+8, and the control rounds of the two-way opening relays in the type III special transformer terminal body are recorded as 8N+1 and 8N+2.

[0020] As a further improvement of the present invention, when the extension module connected to the Type III special transformer terminal realizes remote control opening and closing, the output logic of the relay is defined as follows: the object identifier OI=F205 to which the relay output belongs, the interface class IC=22, the object name is relay output, and attribute 2 is defined as the current state enum{closing (0), tripping (1)}.

[0021] As a further improvement of the present invention, each expansion module supports connecting 4 subordinate devices, including electric meters and user devices. Each expansion module includes 8 remote control units, four of which are used to control user opening, and the unit numbers are 1-4; the other four are used to control user closing, and the unit numbers are 5-8.

[0022] As a further improvement of the present invention, when the Type III special transformer terminal receives the remote control command of opening and closing from the master station, it first determines the turn corresponding to the command. If the turn is in the terminal body, a control command is sent to the remote control unit of the terminal body to realize remote opening. If it is determined that the turn is not in the terminal body, a control command is sent to the corresponding expansion module through RS-485-2. When the expansion module receives the command, it controls the remote control unit to act to realize the remote opening and closing function.

[0023] As a further improvement of the present invention, when the Type III dedicated transformer terminal or the expansion module executes the opening and closing control command, the remote control record event of the corresponding remote control unit is recorded in the log.

[0024] The present invention also includes a remote control system for a substation area based on a type III special transformer terminal and an expansion module, which includes at least one type III special transformer terminal and a plurality of expansion modules connected to the type III special transformer terminal via an RS-485-2 interface. The substation area remote control system manages the type III special transformer terminal and the expansion module using the aforementioned method for expanding the control capability of the type III special transformer terminal, thereby realizing remote operations including file collection and opening and closing of the switch in the substation area.

[0025] The technical solution provided by the present invention has the following beneficial effects:

[0026] The present invention connects multiple expansion modules to the type III dedicated transformer terminal through the RS-485-2 interface to increase the type III dedicated transformer terminal control channel. This can greatly improve the load carrying capacity of the type III dedicated transformer terminal without affecting the original control channel, which is more in line with the current power grid demand.

[0027] The present invention realizes remote opening and closing operations of all channels by uniformly configuring the extended channels and the original control channels of the Type III special transformer terminal and by adding direct closing instructions, thus solving the current problem of being unable to close the switch remotely.

[0028] The present invention designs a remote control system for a substation based on a Type III dedicated transformer terminal with an added extended model, thereby realizing remote opening and closing control of multiple users, and further improving the load capacity of the Type III dedicated transformer terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a flowchart of the steps of a method for expanding the control capability of a Type III dedicated transformer terminal provided in Example 1 of the present invention.

[0030] Figure 2 This is the connection relationship between the Type III dedicated transformer terminal and the expansion module in Example 1 of the present invention.

[0031] Figure 3 This is a schematic diagram of the topological structure of the remote control system for the substation based on the Type III dedicated transformer terminal and the expansion module provided in Example 2 of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] Example 1

[0034] In view of the insufficient load control capability of the Type III special transformer terminal, this embodiment intends to upgrade its internal software and expand its external control channel. (This is deleted because the Type III special transformer terminal itself only has two opening relays and no closing relay, and the hardware does not support the closing operation.) Secondly, increase its round expansion of the expansion module, and then allow multiple external expansion modules. In the expansion terminal used in this embodiment, each expansion module can realize the control of 4 channels. Therefore, the control channel of the Type III special transformer terminal is greatly increased, and the remote control capability of the Type III special transformer terminal is enhanced.

[0035] Specifically, Figure 1 As shown, a method for extending the control capability of a type III dedicated transformer terminal provided in this embodiment includes the following steps:

[0036] S1: Figure 2 As shown, multiple expansion modules are connected to the Type III dedicated transformer terminal via the RS-485-2 interface, and each expansion module is numbered in sequence.

[0037] The expansion module is a special transformer control expansion terminal that can apply the type III special transformer terminal; after the device is connected to the type III special transformer terminal, the internal protocol of the type III special transformer terminal is updated to realize the management of each expansion module in turn. In particular, each expansion module used in this embodiment can realize the control of 4 channels.

[0038] S2: Calculate the extended theoretical value of the control round of the Type III dedicated transformer terminal according to the number of extension modules, and preset the control round of each extension module connected to the Type III dedicated transformer terminal.

[0039] In this embodiment, considering that each extension terminal can carry four loads, and the Type III special transformer terminal body can also carry two loads, therefore, when the number of extension modules connected to the Type III special transformer terminal is N, the expansion theoretical value is 4N+2. When managing each load, this embodiment adopts the principle of managing each extension module first and then managing the terminal body, such as sorting by number: module 1, module 2, ... module N, terminal body. Among them, the control rounds of the i-th extension module correspond to: (4i-3) ~ 4i; specifically, the rounds of the X-th module are 4X-3, 4X-2, 4X-1, 4X, and so on. The control rounds of the two control units on the Type III special transformer terminal body are recorded as 4N+1 and 4N+2.

[0040] S3: Configure each extension module as an additional object of the Type III special transformer terminal collection file as a device type; and update the additional object protocol item after the Type III special transformer terminal is expanded.

[0041] Among them, the object identifier OI in the additional object protocol item is 4036, the interface class IC is 8, and the attribute is 2, that is, the collection file additional object, and the type is defined as "special transformer control extension module".

[0042] S4: Obtain the communication address of each expansion module, and then according to the preset control rounds and additional object protocol items, configure all connected expansion terminals according to different collection file numbers to the server of the main station responsible for managing the Type III special transformer terminal, and the main station will operate and manage it through the Type III special transformer terminal.

[0043] Based on the above expansion, the Type III dedicated transformer terminal can remotely collect the archives and operation information of each power equipment in the substation. The specific collection archive gear train mapping table is as follows:

[0044] Table 1: Expanded III-type dedicated transformer terminal collection file gear train mapping table

[0045]

[0046]

[0047] Based on the above expansion, the Type III special transformer terminal can also realize the remote opening and closing function. The remote opening and closing function is mainly achieved through the remote control opening and closing of the special transformer control expansion module, and the terminal body controls the closing and remote opening operations. Specifically, in this embodiment, the remote control opening and closing operations supported by the expanded Type III special transformer terminal are mainly achieved through the following process:

[0048] 1. Agreement Update

[0049] The original Type III dedicated transformer terminal supports remote opening, but does not support remote closing. Closing operation requires manual operation by maintenance personnel on site. Therefore, in order to realize the extended remote opening and closing, this embodiment first needs to update the closing protocol of the existing Type III dedicated transformer terminal to add a closing instruction. In the updated internal protocol, the object identifier OI=8000, the interface class IC=8, and the object name is remote control.

[0050] Among them, in the remote control method class, the present embodiment does not change the method 129 that supports remote opening. However, for the extended parameters in the existing closing instruction method 130, the present embodiment adjusts the protocol content, and now supports direct remote closing on the basis of on-site manual closing. Specifically, the parameters of method 130 are updated in the extended protocol as follows:

[0051] {Remote control unit OAD, command enum{closing allowed (0), direct closing (1)}}.

[0052] In the command parameters of the updated method 130, "remote control unit OAD" is used to characterize the object of operation, wherein the remote control unit refers to the use of relays to perform opening and closing operations; OAD refers to the designated relay that performs the action. "Command enum {closing allowed (0), direct closing (1)}" refers to the operation performed on the operation object, including allowing on-site closing and direct remote closing; wherein, the identifiers of the closing allowed and direct closing instructions inside the curly brackets indicate that command = 0, that is, on-site closing is allowed, and when command = 1, it is remote direct closing, that is, only one of the two instructions is valid at the same time; allowing closing means allowing the operation and maintenance personnel to manually close the switch on-site, and direct closing means that the master station directly controls the remote control unit to close the switch remotely. Whether to allow closing or direct closing is determined by the on-site operation object based on the identifier in the instruction.

[0053] 2. Round Management

[0054] In the improved solution of this embodiment, the management strategy of the control rounds of each extended remote control unit by the type III dedicated transformer terminal is as follows:

[0055] Each expansion module supports 8 relay outputs, the first 1-4 are opening relay outputs, and the last 1-4 are closing relay outputs. An opening relay and a corresponding closing relay jointly control the opening and closing operations of one load. Each control sequence includes outputs for a group of opening relays and closing relays. The Type III special transformer terminal includes 2 opening relay outputs, which are only used to realize the opening function.

[0056] Among them, the code of each expansion module is defined as 1-N, then the control rounds of the remote control opening and closing operations of the i-th expansion module are recorded as: 8(i-1)+1 to 8(i-1)+8, and the control rounds of the two-way opening relays in the type III special transformer terminal body are recorded as 8N+1 and 8N+2.

[0057] In this embodiment, on the one hand, the expansion module defines the remote control opening and closing logic. This logic adopts the same definition as the type III special transformer terminal, that is, the object identifier OI=8000, the interface class IC=8, the object name is remote control, the method 129 is used for remote opening, and the method 130 allows closing and direct closing.

[0058] On the other hand, when the extension module connected to the Type III special transformer terminal realizes remote control of opening and closing, the output logic of the relay is defined as follows: the object identifier of the relay output is OI=F205, the interface class is IC=22, the object name is relay output, and attribute 2 is defined as the current state enum {closed (0), tripped (1)}. In the extended model, each relay output has this attribute, which indicates whether the current relay output is closed or open.

[0059] Each expansion module supports the connection of 4 subordinate devices, including electric meters and user devices. Each expansion module includes 8 remote control units, of which four are used to control user opening, and the unit numbers are 1-4; the other four are used to control user closing, and the unit numbers are 5-8. The expansion module for single dedicated transformer control defines the 8-way relay output configuration table as follows:

[0060] Table 2: Output configuration table of expansion module

[0061] Relay output object type F2050201 Opening 1 F2050202 Disconnect 2 F2050203 Disconnect 3 F2050204 Disconnect 4 F2050205 Close 1 F2050206 Close 2 F2050207 Closing 3 F2050208 Closing 4

[0062] On this basis, the relay output logic of the Type III special transformer terminal is updated again, from the original 2-way control sequence to 8 (X-1) + 10 control sequences, that is, the Type III special transformer terminal maps the control sequence of the special transformer control expansion module to its own F205 relay output object. The control sequence mapping table is described as follows:

[0063] Table 3: Control sequence table of remote opening and closing

[0064] Relay output object type F205020U(0U=1~8) Special transformer control expansion module 1 (8 channels) ... … F20502NN(NN=8X) Special transformer control expansion module X (8 channels) F20502XX(N+1) Terminal body switch 1 way F20502YY(N+2) Terminal body splits into 2 circuits

[0065] Finally, when the Type III special transformer terminal receives the remote control command of opening and closing from the master station, it first determines the round corresponding to the command. If the round is in the terminal body, it sends a control command to the remote control unit of the terminal body to allow closing and remote opening. If it is determined that the round is not in the terminal body, the control command is sent to the corresponding expansion module through RS-485-2. When the expansion module receives the command, it controls the remote control unit to realize the remote opening and closing function.

[0066] In addition, when the Type III dedicated transformer terminal or expansion module executes the opening and closing control command, the remote control record (3315) event of the corresponding remote control unit is recorded in the device log.

[0067] The present invention connects an X-way control expansion module through an RS-485-2 interface; increases the control channel of the Type III special transformer terminal, and improves the control capability of the Type III special transformer terminal. On this basis, the present invention uniformly configures the expansion channel and the original control channel of the Type III special transformer terminal, and the terminal defines the order of the control channel and the expansion channel round. Finally, the collection archive function and the remote opening and closing function are configured to the terminal system.

[0068] In the solution of this aspect, each expansion module can be connected to 4 loads, such as electric meters, user equipment, etc. Each expansion module contains 8 remote control units, of which 4 control user opening, unit numbers 1-4; 4 control user closing, unit numbers 5-8. The module can realize opening and closing control of multiple users. Therefore, it can adapt to the orderly power consumption management of power users in the current scenario and the management needs of other power grid demand sides.

[0069] Example 2

[0070] Based on the solution of embodiment 1, this embodiment also provides a remote control system for the station area based on type III special transformer terminal and expansion module. The overall architecture of the system is as follows: Figure 3 As shown, it includes at least one type III special transformer terminal and a plurality of expansion modules connected to the type III special transformer terminal via an RS-485-2 interface. In particular, the remote control system of the substation area provided in this embodiment can manage the type III special transformer terminal and the expansion modules by adopting the method of expanding the control capability of the type III special transformer terminal as in embodiment 1, and further realize remote operation including file collection and opening and closing of the switch in the substation area.

[0071] In the remote control system of the substation, the special transformer control expansion module (hereinafter referred to as: expansion module) is an independent module composed of a double-layer PCB board with specific functions for expanding the type III special transformer terminal. This embodiment uses the expansion module to mainly realize the remote opening and closing function of the extended type III special transformer terminal, the control circuit break detection function, and the remote signal state quantity collection function. In terms of hardware, the module is mainly composed of 8 remote control relays, 4 remote signal state quantity collection units, one 485 communication unit, and one Ethernet communication unit. The specific information is as follows:

[0072] The 8-way relays of the expansion module all use relays of the same specification, but they are divided into two categories in terms of function. One is the 4-way opening relay on the upper board, which realizes the remote control opening function of the Type III special transformer terminal; the other is the 4-way closing relay on the lower board, which realizes the remote control closing function of the Type III special transformer terminal.

[0073] The functions of the control circuit disconnection detection unit and the remote signal state quantity acquisition unit are mainly detection. The former detects whether the relays in the current expansion module are connected normally in the circuit and whether they can effectively execute the control instructions. If the relay connection status changes, the corresponding control circuit position change event is generated. The latter refers to whether the external circuit breaker is truly disconnected / closed after the expansion module executes the remote control opening and closing command. When the external circuit breaker connection status changes, the corresponding remote signal state quantity position change event is immediately generated.

[0074] The 485 communication unit mainly realizes wired communication with the Type III special transformer terminal. In terms of hardware circuit connection, the Type III special transformer terminal is connected to the special transformer control expansion module through its RS-485-2 interface, and then realizes the interaction of basic data, such as setting default parameters, reading related data, etc. The data transmission function of the communication unit can be used to complete the remote collection of archive information.

[0075] The Ethernet communication unit mainly realizes the reporting of various events of the special transformer control expansion module, and also supports the interaction of various data connected by wired communication. Various events include the above-mentioned control loop position change event, remote signal state quantity position change event, etc.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for extending the control capability of a type III dedicated transformer terminal, characterized in that: It includes the following steps: S1: Connect multiple expansion modules to the Type III dedicated transformer terminal through the RS-485-2 interface, and number each expansion module in sequence; S2: Calculate the extended theoretical value of the control round of the type III dedicated transformer terminal according to the number of the expansion modules, and preset the control round of each expansion module connected to the type III dedicated transformer terminal; S3: configure each extension module as an additional object of the collection file of the Type III special transformer terminal as a device type; and update the additional object protocol item after the extension of the Type III special transformer terminal; Among them, the object identifier OI in the additional object protocol item is 4036, the interface class IC is 8, the attribute is 2, that is, the collection file additional object, and the type is defined as "special transformer control extension module"; S4: Obtain the communication address of each expansion module, and then configure all the connected expansion modules according to different collection file numbers to the server of the master station responsible for managing the type III dedicated transformer terminal according to the preset control round and additional object protocol items, and the master station operates and manages it through the type III dedicated transformer terminal; The operation management supported by the expanded type III special transformer terminal includes remote control opening and closing; the process of updating the type III special transformer terminal to realize remote control opening and closing requires updating the closing protocol to add a closing instruction, including: in the internal protocol, the object identifier OI=8000, the interface class IC=8, and the object name is remote control; Among them, in the remote control method class, the method 129 supporting remote opening is retained; the parameters in the existing closing instruction method 130 are extended to realize direct remote closing on the basis of supporting on-site manual closing after closing is allowed; the parameters of method 130 are updated to {remote control unit OAD, command enum {closing allowed (0), direct closing (1)}} in the extended protocol; In the parameters of the updated method 130, "remote control unit OAD" is used to characterize the object of the operation, wherein the remote control unit refers to the use of relays to perform opening and closing operations; OAD refers to the designated relay that performs the action; "Command enum{closing allowed (0), direct closing (1)}" refers to the operation performed on the operation object, including allowing on-site closing and direct remote closing; when command = 0, it means on-site closing is allowed, and when command = 1, it means remote direct closing, that is, only one of the two commands is valid at the same time; When the expansion module connected to the Type III special transformer terminal realizes remote control of opening and closing, the output logic of the relay is defined as follows: the object identifier of the relay output is OI=F205, the interface class is IC=22, the object name is relay output, and attribute 2 is defined as the current state enum {closing (0), tripping (1)}; When the Type III special transformer terminal receives the opening and closing remote control command from the main station, it first determines the round corresponding to the opening and closing remote control command. If the round is in the terminal body, the control command is sent to the remote control unit of the terminal body to realize remote opening. If it is determined that the round is not in the terminal body, the control command is sent to the corresponding expansion module through RS-485-2. When the expansion module receives the command, it controls the remote control unit to realize the remote opening and closing function.

2. The method for extending the control capability of a Type III dedicated transformer terminal according to claim 1, characterized in that: In step S2, when the number of expansion modules connected to the Type III dedicated transformer terminal is N, the theoretical expansion value is 4N+2; among which, the control rounds of the i-th expansion module correspond to: (4i-3)~4i, and the control rounds of the two control units on the Type III dedicated transformer terminal body are recorded as 4N+1 and 4N+2.

3. The method for extending the control capability of a Type III dedicated transformer terminal according to claim 1, characterized in that: The management strategy of the control rounds of each extended remote control unit by the type III dedicated transformer terminal is as follows: Each expansion module supports 8 relay outputs, the first 1-4 are opening relay outputs, and the last 1-4 are closing relay outputs; an opening relay and a corresponding closing relay jointly control the opening and closing operations of one load; each control sequence includes the output of a group of opening relays and closing relays; The Type III special transformer terminal includes 2 trip relay outputs, which are only used to realize the trip function; Among them, the code of each expansion module is defined as 1-N, then the control rounds of the remote control opening and closing operations of the i-th expansion module are recorded as: 8(i-1)+1 to 8(i-1)+8, and the control rounds of the two-way opening relays in the type III special transformer terminal body are recorded as 8N+1 and 8N+2.

4. The method for extending the control capability of a Type III dedicated transformer terminal according to claim 1, characterized in that: Each expansion module supports the connection of 4 subordinate devices, including electric meters and user devices; each expansion module includes 8 remote control units, four of which are used to control user opening, and the unit numbers are 1-4; the other four are used to control user closing, and the unit numbers are 5-8.

5. The method for extending the control capability of a Type III dedicated transformer terminal according to claim 1, characterized in that: When the Type III dedicated transformer terminal or expansion module executes the opening and closing control command, the remote control record event of the corresponding remote control unit is recorded in the log.

6. A remote control system for a substation based on a type III dedicated transformer terminal and an expansion module, characterized in that: It includes at least one Type III special transformer terminal and multiple expansion modules connected to the Type III special transformer terminal through an RS-485-2 interface. The substation remote control system adopts the method of expanding the control capability of the Type III special transformer terminal as described in any one of claims 1 to 5 to manage the Type III special transformer terminal and the expansion modules, thereby realizing remote operations including file collection and opening and closing of switches within the substation.

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