Centralized control system and method for direct current converter station and computer equipment

Abstract

The invention relates to a direct current converter station centralized control system and method and computer equipment, and relates to the technical field of power grids. The system comprises a centralized control center and a plurality of direct current converter stations. The target direct current converter station is used for uploading the in-station data of the target direct current converter station to the centralized control center; the target DC converter station is any one of the plurality of DC converter stations; the centralized control center is used for determining main in-station data uploaded by the main direct current converter station control system from the in-station data; through the communication connection, control information obtained according to the data in the main station is issued to the target direct current converter station; and the target DC converter station is also used for executing an action corresponding to the main control information. By adopting the method, a plurality of direct current converter stations can be monitored in a centralized manner.

Description

Technical Field

[0001] The present application relates to the field of power grid technology, and in particular to a DC converter station centralized control system, method, computer equipment, computer-readable storage medium, and computer program product. Background Art

[0002] At present, most DC converter stations still use sub-station monitoring. However, with the large-scale deployment of DC converter stations, sub-station monitoring is bound to encounter problems such as difficulty in stationing personnel at converter stations, poor transportation, and high equipment maintenance costs. Therefore, there is an urgent need to conduct centralized monitoring of multiple DC converter stations. Summary of the Invention

[0003] Based on this, it is necessary to provide a DC converter station centralized control system, method, computer equipment, computer-readable storage medium and computer program product that can centrally monitor multiple DC converter stations to address the technical problems of monitoring difficulties existing in the above-mentioned sub-station monitoring.

[0004] In a first aspect, the present application provides a DC converter station centralized control system, the DC converter station centralized control system comprising a centralized control center and multiple DC converter stations, the centralized control center having at least two identical centralized control center control systems, each DC converter station having at least two identical DC converter station control systems, and any set of the centralized control center control systems being communicatively connected to any set of the DC converter station control systems;

[0005] a target DC converter station, configured to transmit redundant internal data of the target DC converter station to the centralized control center through communication between each set of DC converter station control systems and each set of centralized control center control systems; the target DC converter station is any one of the multiple DC converter stations;

[0006] The centralized control center is configured to determine, from the station data redundantly uploaded by the target DC converter station, the master station data uploaded by the master DC converter station control system in each set of DC converter station control systems; and to transmit control information obtained based on the master station data to the target DC converter station through communication between the master centralized control center control system in each set of centralized control center control systems and the DC converter station control systems.

[0007] The target DC converter station is further configured to execute an action corresponding to the control information.

[0008] In one embodiment, the target DC converter station is configured with a master control position identification bit;

[0009] The target DC converter station is further configured to, when the total control position identifier is the target DC converter station and a control position transfer request sent by the centralized control center is received, release the total control authority over the target DC converter station, transfer the total control authority to the centralized control center, and modify the total control position identifier to the centralized control center;

[0010] The target DC converter station is also used to request the centralized control center to release the total control authority when the total control position identifier is the centralized control center and a control position transfer request sent by the target DC converter station is received, and transfer the total control authority to the target DC converter station after the total control authority is released.

[0011] In one embodiment, the target DC converter station is further configured to, when the total control position identification bit is empty and a control position transfer request sent by the target DC converter station is received, transfer the total control authority to the target DC converter station, and modify the total control position identification bit to the target DC converter station;

[0012] The target DC converter station is further configured to transfer the general control authority to the centralized control center when the general control position identification bit is empty and a control position transfer request sent by the centralized control center is received, and to modify the general control position identification bit to the centralized control center.

[0013] In one embodiment, the target DC converter station is further configured with a power control mode identification bit; when the master control position identification bit is the target DC converter station, the target DC converter station has the authority to modify the power control mode identification bit; when the master control position identification bit is the centralized control center, the centralized control center has the authority to modify the power control mode identification bit;

[0014] The centralized control center is further configured to, when the master control position identifier is the centralized control center, the power control mode identifier is the manual control mode, and the power control mode set in the centralized control center is the power curve on-site execution control, perform the power curve on-site execution control on the target DC converter station through communication between the main centralized control center control system and the control systems of each set of DC converter stations;

[0015] The centralized control center is also used to perform the manual control of the target DC converter station through communication between the main centralized control center control system and the control systems of each set of DC converter stations when the total control position identifier is the centralized control center, the power control mode identifier is the manual control mode, and the power control mode set in the centralized control center is manual control.

[0016] In one embodiment, the target DC converter station is further configured with a power control mode identification bit; when the master control position identification bit is the target DC converter station, the target DC converter station has the authority to modify the power control mode identification bit; when the master control position identification bit is the centralized control center, the centralized control center has the authority to modify the power control mode identification bit;

[0017] The target DC converter station is further configured to perform power curve on-site execution control on the target DC converter station when the master control position identifier is the centralized control center, the power control mode identifier is the automatic control mode, and the power control mode set in the target DC converter station is power curve on-site execution control;

[0018] The target DC converter station is further configured to perform the power curve automatic execution control on the target DC converter station when the total control position identifier is the centralized control center, the power control mode identifier is the automatic control mode, and the power control mode set in the target DC converter station is the power curve automatic execution control.

[0019] In a second aspect, the present application further provides a DC converter station centralized control method, which is applied to a centralized control center in a DC converter station centralized control system, wherein the DC converter station centralized control system further includes multiple DC converter stations, the centralized control center has at least two identical centralized control center control systems, and each DC converter station has at least two identical DC converter station control systems, and any set of centralized control center control systems is communicatively connected to any set of DC converter station control systems; the method includes:

[0020] receiving internal data of the target DC converter station redundantly transmitted by the target DC converter station through communication between each set of DC converter station control systems and each set of centralized control center control systems; the target DC converter station is any one of the multiple DC converter stations;

[0021] Determining, from the station data redundantly transmitted by the target DC converter station, the master station data transmitted by the master DC converter station control system in each set of DC converter station control systems;

[0022] Through the communication between the main centralized control center control system in each set of centralized control center control systems and the each set of DC converter station control systems, the control information obtained based on the data in the master station is sent to the target DC converter station; the target DC converter station is used to execute actions corresponding to the control information.

[0023] In a third aspect, the present application further provides a DC converter station centralized control method, which is applied to a target DC converter station among multiple DC converter stations in a DC converter station centralized control system, wherein the target DC converter station is any one of the multiple DC converter stations, and the DC converter station centralized control system further includes a centralized control center, wherein the centralized control center has at least two identical centralized control center control systems, and each DC converter station has at least two identical DC converter station control systems, and any set of centralized control center control systems is communicatively connected to any set of DC converter station control systems; the method includes:

[0024] The in-station data of the target DC converter station is redundantly uploaded to the centralized control center through communication between each set of DC converter station control systems and each set of centralized control center control systems; the centralized control center is used to determine the master in-station data uploaded by the master DC converter station control system in each set of DC converter station control systems from the redundant in-station data uploaded by the target DC converter station, and to send the control information obtained based on the master in-station data to the target DC converter station through communication between the master centralized control center control system in each set of centralized control center control systems and each set of DC converter station control systems;

[0025] Execute an action corresponding to the control information.

[0026] In a fourth aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program and the processor executes each step in any one of the methods for centralized control of a DC converter station.

[0027] In a fifth aspect, the present application also provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to execute each step in any one of the DC converter station centralized control methods.

[0028] In a sixth aspect, the present application also provides a computer program product, including a computer program, which is executed by a processor to execute each step in any one of the DC converter station centralized control methods.

[0029] The above-mentioned DC converter station centralized control system, method, computer device, computer-readable storage medium and computer program product, the DC converter station centralized control system includes a centralized control center and multiple DC converter stations, the centralized control center has at least two identical centralized control center control systems, each DC converter station has at least two identical DC converter station control systems, any set of centralized control center control systems and any set of DC converter station control systems are communicatively connected; the target DC converter station is used to connect the target DC converter station to the target DC converter station through the communication between each set of DC converter station control system and each set of centralized control center control system. The redundant in-station data is uploaded to the centralized control center; the target DC converter station is any one of the multiple DC converter stations; the centralized control center is used to determine the master in-station data uploaded by the master DC converter station control system in each set of DC converter station control systems from the redundant in-station data uploaded by the target DC converter station; the control information obtained based on the master in-station data is sent to the target DC converter station through communication between the master centralized control center control system in each set of centralized control center control systems and each set of DC converter station control systems; the target DC converter station is further used to execute actions corresponding to the control information. In this way, through communication between each set of centralized control center control systems in the centralized control center and each set of DC converter station control systems in each DC converter station, each DC converter station can upload its own in-station data to the centralized control center, and the centralized control center can also send control information for each DC converter station to each DC converter station, so that each DC converter station executes a corresponding action; based on the above-mentioned DC converter station centralized control system, centralized monitoring of multiple DC converter stations can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a structural diagram of a centralized control system for a DC converter station in one embodiment;

[0032] Figure 2 Schematic diagram of the communication connection relationship between each set of centralized control center control system and each set of DC converter station control system in one embodiment;

[0033] Figure 3 A schematic diagram of the communication connection relationship between each set of centralized control center control systems and each set of DC converter station control systems in another embodiment;

[0034] Figure 4 A schematic diagram of overall control authority switching in one embodiment;

[0035] Figure 5 is a schematic diagram of power control in one embodiment;

[0036] Figure 6 1 is a flow chart of a centralized control method for a DC converter station according to an embodiment;

[0037] Figure 7 Schematic diagram of a flow chart of a centralized control method for a DC converter station in another embodiment;

[0038] Figure 8 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0040] It should be noted that the terms "first", "second", etc. used in this application may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "including" and "having" used in this application and any variations thereof are intended to cover non-exclusive inclusions. The term "plurality" used in this application refers to two or more. The term "and / or" used in this application refers to one of the solutions or any combination of multiple solutions.

[0041] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intervening element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc., if there is transmission of electrical signals or data between the connected objects.

[0042] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0043] In an exemplary embodiment, the present application provides Figure 1 The DC converter station centralized control system shown in Figure 1The DC converter station centralized control system includes a centralized control center and multiple DC converter stations; the centralized control center has at least two identical centralized control center control systems, and each DC converter station has at least two identical DC converter station control systems. A centralized control center control system includes at least an encryption device, a front-end acquisition server, a SCADA (Supervisory Control And Data Acquisition) server, an operator workstation, a history server, etc., and a DC converter station control system includes at least an encryption device, an intelligent telecontrol device, an in-station server, an operator workstation, a DC control and protection system, a measurement and control system, etc.; wherein, any centralized control center control system is communicatively connected to any DC converter station control system, that is, for a centralized control center and a DC converter station, each centralized control center control system of the centralized control center is communicatively connected to each DC converter station control system of the DC converter station, for example, Figure 2 It is the communication connection relationship between each set of centralized control center control system and each set of DC converter station control system.

[0044] In specific applications, the communication link between the centralized control center control system and the DC converter station control system mainly includes the front-end acquisition server, intelligent telecontrol device and DC control protection system. Therefore, the communication connection relationship between each set of centralized control center control system and each set of DC converter station control system can also be as follows: Figure 3 shown.

[0045] In specific applications, one of the centralized control center control systems serves as the main centralized control center control system, and the remaining sets serve as backup centralized control center control systems; one of the DC converter station control systems serves as the main DC converter station control system, and the remaining sets serve as backup DC converter station control systems.

[0046] In this embodiment, the target DC converter station is used to redundantly upload the internal data of the target DC converter station to the centralized control center through communication between each set of DC converter station control systems and each set of centralized control center control systems.

[0047] The target DC converter station is any one of the multiple DC converter stations.

[0048] In specific applications, the DC control and protection system in each DC converter station control system of the target DC converter station is used to send the station data collected by itself to the intelligent telecontrol device in each DC converter station control system. The intelligent telecontrol device in each DC converter station control system is used to send the station data sent by each DC control and protection system, as well as the station data sent by the main DC control and protection system (the DC converter station control system to which it belongs is the DC control and protection system of the main DC converter station control system), to the centralized control center. For example, see Figure 2 Assuming that DC control and protection system 1 is the main DC converter station control system, first, DC control and protection system 1 and DC control and protection system 2 both send their collected station data to intelligent telecontrol device 1 and intelligent telecontrol device 2; then, taking intelligent telecontrol device 1 as an example, it will send the station data sent by DC control and protection system 1 and the station data sent by DC control and protection system 2 to the front-end collection servers in each set of centralized control center control systems.

[0049] In practical applications, the target DC converter station can display the in-station data collected by the control systems of each DC converter station, and identify the master in-station data among the displayed in-station data, so that the operating personnel of the target DC converter station can quickly view the master in-station data and compare the master in-station data with the remaining in-station data.

[0050] In this embodiment, the centralized control center is configured to determine the master station data sent through the master DC converter station control system in each set of DC converter station control systems from the redundantly sent station data of the target DC converter station.

[0051] The control information may be data, instructions or requests.

[0052] In specific applications, the main centralized control center control system of the centralized control center is also used to identify the station data sent by the main DC converter station control system from the received station data as the main station data. Figure 2 Assuming that the DC converter station control system to which the DC control and protection system 1 belongs is the main DC converter station control system, and assuming that the centralized control center control system to which the front-end acquisition server 1 belongs is the main centralized control center control system, then the main centralized control center control system identifies the station data sent by the main DC control and protection system from the station data sent by the DC control and protection system 1 and the station data sent by the DC control and protection system 2, and uses it as the station data sent by the main DC converter station control system, that is, the main station data.

[0053] In actual applications, the control systems of the other backup centralized control centers in the centralized control center are used to save the received copies of the station data. Furthermore, the centralized control center can display the copies of the station data and identify the primary station data in the displayed copies, so that the centralized control center operators can quickly view the primary station data and compare it with the remaining station data.

[0054] In this embodiment, the centralized control center is also used for communication between the master centralized control center control system and each set of DC converter station control systems in each set of centralized control center control systems, and sends the control information obtained based on the data in the master station to the target DC converter station.

[0055] In specific applications, the main front-end acquisition server in the main centralized control center control system of the centralized control center is used to send the control information obtained based on the data in the master station to each set of DC converter station control systems. For example, see Figure 2 Assuming that the main front-end acquisition server is front-end acquisition server 1, front-end acquisition server 1 sends the control information to intelligent telecontrol device 1 and intelligent telecontrol device 2, and then intelligent telecontrol device 1 and intelligent telecontrol device 2 send the control information to DC control and protection system 1 and DC control and protection system 2.

[0056] In specific applications, the centralized control center is also used to send control information to the target DC converter station when it has overall control authority over the target DC converter station.

[0057] In this embodiment, the target DC converter station is further configured to execute actions corresponding to the control information.

[0058] In a specific application, the main DC control and protection system of the target DC converter station is also used to execute actions corresponding to the main control information.

[0059] In practical applications, the DC converter station can display various pieces of control information and identify the main control information among the displayed pieces of control information, so that the operating personnel of the target DC converter station can quickly view the main control information and compare the main control information with other control information.

[0060] In this embodiment, based on the data interaction between the centralized control center and the DC converter station, the centralized control center can send remote control and remote adjustment instructions to the DC control and protection system of each DC converter station through the front-end acquisition server of the centralized control center and the intelligent telecontrol device of the DC converter station, and the DC control and protection system is then responsible for the specific execution of the instructions; at the same time, the DC control and protection system collects the software / hardware status data, measurement values ​​and event sequence records through the intelligent telecontrol device, and sends them to the SCADA server and operator workstation of the centralized control center via the front-end acquisition server.

[0061] In the above-mentioned DC converter station centralized control system, the DC converter station centralized control system includes a centralized control center and multiple DC converter stations. The centralized control center has at least two identical centralized control center control systems, and each DC converter station has at least two identical DC converter station control systems. Any set of centralized control center control systems is communicatively connected to any set of DC converter station control systems; the target DC converter station is used to redundantly upload the station data of the target DC converter station to the centralized control center through communication between each set of DC converter station control systems of the target DC converter station and each set of centralized control center control systems; the target DC converter station is any one of the multiple DC converter stations; the centralized control center is used to determine the main station data uploaded by the main DC converter station control system in each set of DC converter station control systems from the redundantly uploaded station data of the target DC converter station; the control information obtained according to the main station data is sent to the target DC converter station through communication between the main centralized control center control system in each set of centralized control center control systems and each set of DC converter station control systems; the target DC converter station is also used to execute actions corresponding to the control information. In this way, through the communication between each set of centralized control center control systems in the centralized control center and each set of DC converter station control systems in each DC converter station, each DC converter station can send its own station data to the centralized control center, and the centralized control center can also send control information for each DC converter station to each DC converter station, so that each DC converter station performs corresponding actions; based on the above-mentioned DC converter station centralized control system, centralized monitoring of multiple DC converter stations can be achieved.

[0062] In an exemplary embodiment, when the control information is a remote control instruction, the centralized control center is also used to issue the remote control instructions sequentially, that is, the centralized control center issues one remote control instruction each time, and continues to issue the next remote control instruction after the target DC converter station completes the execution of the previous remote control instruction.

[0063] In an exemplary embodiment, the target DC converter station is configured with a master control position identifier. The master control position identifier is used to indicate the location of the master control authority for the target DC converter station. In a specific application, the master control position identifier is set in the DC control and protection system.

[0064] In this embodiment, the target DC converter station is also used to release the total control authority over the target DC converter station and transfer the total control authority to the centralized control center when the total control position identification bit is the target DC converter station and a control position transfer request sent by the centralized control center is received, and to modify the total control position identification bit to the centralized control center.

[0065] Among them, if the overall control position identification bit is the target DC converter station, it means that the overall control authority of the target DC converter station is located in the target DC converter station.

[0066] In specific applications, the main DC control and protection system of the target DC converter station is also used to release the target DC converter station's total control authority over the target DC converter station when the main DC control and protection system is configured with the target DC converter station as the total control position identification bit and receives a control position transfer request sent by the operator of the centralized control center through the centralized control center, and then transfer the total control authority over the target DC converter station to the centralized control center, while modifying the total control position identification bit to the centralized control center.

[0067] Among them, if the overall control position identification bit is the centralized control center, it means that the overall control authority of the target DC converter station is located in the centralized control center.

[0068] In actual application, the control system of the main centralized control center sends a control position transfer request to the target DC converter station.

[0069] In this embodiment, the target DC converter station is also used to request the centralized control center to release the total control authority when the total control position identification bit is the centralized control center and a control position transfer request sent by the target DC converter station is received, and transfer the total control authority to the target DC converter station after the total control authority is released, and modify the total control position identification bit to the target DC converter station.

[0070] The centralized control center is further configured to release the overall control authority over the target DC converter station upon receiving a request for releasing the overall control authority from the target DC converter station.

[0071] In a specific application, the main DC control and protection system of the target DC converter station is also used to send a total control authority release request to the control center when the main DC control and protection system is configured with a total control position identification bit and receives a control position transfer request sent by the operating personnel of the target DC converter station through the target DC converter station, so as to request the control center to release the total control authority of the control center over the target converter station, and after the total control authority of the target converter station is released, transfer the total control authority of the target converter station to the target DC converter station, and at the same time modify the total control position identification bit to the target DC converter station.

[0072] In actual applications, the operator of the target DC converter station sends a control position request through the main DC converter station control system; the main DC converter station control system is also used to send a request to release the overall control authority to the centralized control center.

[0073] In this embodiment, it should be noted that the transmission of control position transfer requests and total control authority release requests between the centralized control center and the target DC converter station is achieved through communication between each set of DC converter station control systems of the target DC converter station and each set of centralized control center control systems.

[0074] In this embodiment, when the overall control position identification bit is not empty, the overall control authority switching based on the request-release principle can ensure that the DC converter station and the centralized control center can orderly transfer the overall control authority of the DC converter station, thereby ensuring that the centralized control center can centrally monitor multiple DC converter stations and the DC converter station can still retain control over itself.

[0075] In an exemplary embodiment, the target DC converter station is further used to transfer the total control authority to the target DC converter station when the total control position identification bit is empty and a control position transfer request sent by the target DC converter station is received, and to modify the total control position identification bit to the target DC converter station.

[0076] In a specific application, the main DC control and protection system of the target DC converter station is also used to transfer the total control authority of the target DC converter station to the target DC converter station when the total control position identification bit configured by the main DC control and protection system is empty and a control position transfer request is received from the operating personnel of the target DC converter station through the target DC converter station, and at the same time modify the total control position identification bit to the target DC converter station.

[0077] In actual applications, the operator of the target DC converter station sends a control position request through the main DC converter station control system.

[0078] In this embodiment, the target DC converter station is also used to transfer the general control authority to the centralized control center when the general control position identification bit is empty and a control position transfer request sent by the centralized control center is received, and to modify the general control position identification bit to the centralized control center.

[0079] In specific applications, the main DC control and protection system of the target DC converter station is also used to transfer the total control authority of the target DC converter station to the centralized control center when the total control position identification bit configured by the main DC control and protection system is empty and a control position transfer request is received from the operator of the centralized control center through the centralized control center, and at the same time, the total control position identification bit is modified to the centralized control center.

[0080] In actual application, the operator of the centralized control center sends a control position transfer request through the main centralized control center control system.

[0081] In this embodiment, it should be noted that the transmission of the control position transfer request between the centralized control center and the target DC converter station is achieved through communication between each set of DC converter station control systems of the target DC converter station and each set of centralized control center control systems.

[0082] In this embodiment, when the general control position identification bit is empty, the general control authority switching based on the request can ensure that both the DC converter station and the centralized control center can obtain the general control authority over the DC converter station, thereby ensuring that the centralized control center can centrally monitor multiple DC converter stations, and the DC converter station can still retain control over itself.

[0083] In an exemplary embodiment, in the related art, a master control position identification bit is set in the DC control and protection system of the DC converter station. The present application makes an adaptive software modification to support modification to a centralized control center to meet the needs of the centralized control center for data interaction, so that the centralized control center is consistent with the workstation level of the station operator. The switching of the master control authority follows the following procedure: Figure 4 The "request-release" and "request" principles shown in FIG are used to realize the remote monitoring function of the DC converter station by the centralized control center.

[0084] In an exemplary embodiment, the target DC converter station is further configured with a power control mode flag. The power control mode flag is used to indicate the power control mode for the target DC converter station, which includes a manual control mode and an automatic control mode. In a specific application, the power control mode flag is set in the DC control and protection system.

[0085] If the master control position is identified as the target DC converter station, the target DC converter station has the authority to modify the power control mode flag. If the master control position is identified as the centralized control center, the centralized control center has the authority to modify the power control mode flag. In other words, the modification authority of the master control position is consistent with the location of the master control authority.

[0086] In this embodiment, the centralized control center is also used to perform power curve on-site execution control of the target DC converter station through communication between the main centralized control center control system and each set of DC converter station control systems when the total control position identification bit is the centralized control center, the power control mode identification bit is the manual control mode, and the power control mode set in the centralized control center is power curve on-site execution control.

[0087] Among them, a power control mode switching button is provided in the centralized control center. The power control mode switching button specifically includes a power curve on-site execution control button corresponding to the power curve on-site execution control and a manual control button corresponding to manual control. When the operator of the centralized control center selects the power curve on-site execution control button, the power control mode set in the centralized control center is the power curve on-site execution control. When the operator of the centralized control center selects the manual control button, the power control mode set in the centralized control center is the manual control button.

[0088] Among them, on-site execution control of the power curve refers to SLC control (Power-Schedule Local Control), which means that the operator or operator of the centralized control center or DC converter station with actual power control authority imports the power curve issued by the general dispatching center into the corresponding operator workstation or operator workstation. The operator workstation or operator workstation then sends the power control data of the power curve to the DC protection control system. The DC protection control system adjusts the DC power control process according to the power control data. The power curve includes multiple power points, each of which corresponds to a set of power control data and a time point. In actual applications, the general dispatching center will send the power curve to both the centralized control center and the DC converter station. However, whether the centralized control center or the DC converter station performs SLC control is determined by the centralized control center and the DC converter station based on their respective circumstances.

[0089] Among them, manual control refers to LMC control (Local Manual Control), which is the control process of adjusting DC power by manually setting parameters such as power setting value and change rate according to the scheduling.

[0090] In specific applications, the main centralized control center control system of the centralized control center is also used to receive the power curve issued by the general dispatching center; under the on-site execution control of the power curve, the operator of the centralized control center needs to manually import the power curve into the main operator workstation of the centralized control center; the main operator workstation of the centralized control center is also used when the general control position identification bit is the centralized control center (that is, the general control authority of the target DC converter station is located in the centralized control center), the power control mode identification bit is the manual control mode (that is, the power control mode of the target DC converter station is the manual control mode), the power control mode set in the centralized control center is the power curve on-site execution control (that is, the power curve on-site execution control button in the centralized control center is selected), and the operator of the centralized control center imports the power curve into the main operator workstation, for each power point of the power curve, when the current moment reaches the time point corresponding to the power point, the power control data corresponding to the power point is sent to the main DC protection control system of the target DC converter station through communication between the main centralized control center control system and each set of DC converter station control systems, so as to realize the on-site execution control of the power curve of the target DC converter station by the centralized control center.

[0091] In a specific application, the main DC protection and control system is further configured to respond to the power control data and execute an action corresponding to the power control data.

[0092] In this embodiment, the centralized control center is also used to manually control the target DC converter station through communication between the main centralized control center control system and each set of DC converter station control systems when the total control position identification bit is the centralized control center, the power control mode identification bit is the manual control mode, and the power control mode set in the centralized control center is manual control.

[0093] In specific applications, the main operator workstation of the centralized control center is also used to receive power control data input by the operator of the centralized control center when the general control position identification bit is the centralized control center (that is, the general control authority of the target DC converter station is located in the centralized control center), the power control mode identification bit is the manual control mode (that is, the power control mode of the target DC converter station is the manual control mode), and the power control mode set in the centralized control center is manual control (that is, the manual control button in the centralized control center is selected), and the power control data is sent to the main DC protection control system of the target DC converter station through communication between the main centralized control center control system and each set of DC converter station control systems, so as to realize manual control of the target DC converter station by the centralized control center.

[0094] In a specific application, the main DC protection and control system is further configured to respond to the power control data and execute an action corresponding to the power control data.

[0095] In this embodiment, the actual power control mode of each DC converter station can be determined through the master control position identification bit, the power control mode identification bit, and the power control mode set in the centralized control center.

[0096] In an exemplary embodiment, the target DC converter station is also configured with a power control mode identification bit; when the total control position identification bit is the target DC converter station, the target DC converter station has the authority to modify the power control mode identification bit; when the total control position identification bit is the centralized control center, the centralized control center has the authority to modify the power control mode identification bit.

[0097] In this embodiment, the target DC converter station is also used to perform power curve on-site execution control on the target DC converter station when the total control position identifier is the centralized control center, the power control mode identifier is the automatic control mode, and the power control mode set in the target DC converter station is power curve on-site execution control.

[0098] Among them, a power control mode switching button is provided in the target DC converter station, and the power control mode switching button specifically includes a power curve on-site execution control button corresponding to the power curve on-site execution control and a power curve automatic execution control button corresponding to the power curve automatic execution control. When the operating personnel of the target DC converter station selects the power curve on-site execution control button, the power control mode set in the target DC converter station is the power curve on-site execution control; when the operating personnel of the target DC converter station selects the power curve automatic execution control button, the power control mode set in the target DC converter station is the power curve automatic execution control button.

[0099] Among them, power-curve automatic execution control refers to SAC control (Power-Schedule Automatic Control). This is where the operator's workstation at the DC converter station receives the power curve from the central dispatching center and sends the power control data of the power curve to the DC protection control system. The DC protection control system adjusts the DC power control process according to the power control data. The power curve includes multiple power points, each of which corresponds to a set of power control data and a time point.

[0100] In a specific application, the main DC converter station control system of the target DC converter station is also used to receive the power curve issued by the general dispatching center; under the on-site execution control of the power curve, the operating personnel of the target DC converter station need to manually import the power curve into the main operating personnel workstation of the target DC converter station; the main operating personnel workstation of the target DC converter station is also used to, when the general control position identification bit is the centralized control center (that is, the overall control authority of the target DC converter station is located in the centralized control center), the power control mode identification bit is the automatic control mode (that is, the power control mode of the target DC converter station is the automatic control mode), the power control mode set in the target DC converter station is the power curve on-site execution control (that is, the power curve on-site execution control button in the target DC converter station is selected), and the operating personnel of the target DC converter station imports the power curve into the main operating personnel workstation, for each power point of the power curve, when the current time reaches the time point corresponding to the power point, send the power control data corresponding to the power point to the main DC protection control system, so as to realize the on-site execution control of the power curve of the target DC converter station by the target DC converter station.

[0101] In a specific application, the main DC protection and control system is further configured to respond to the power control data and execute an action corresponding to the power control data.

[0102] In this embodiment, the target DC converter station is also used to perform power curve automatic execution control on the target DC converter station when the total control position identifier is the centralized control center, the power control mode identifier is the automatic control mode, and the power control mode set in the target DC converter station is power curve automatic execution control.

[0103] In a specific application, the main DC converter station control system of the target DC converter station is also used to receive the power curve issued by the general dispatching center; the main operator workstation of the target DC converter station is also used to, when the general control position identification bit is the centralized control center (that is, the general control authority of the target DC converter station is located in the centralized control center), the power control mode identification bit is the automatic control mode (that is, the power control mode of the target DC converter station is the automatic control mode), and the power control mode set in the target DC converter station is the automatic execution control of the power curve (that is, the automatic execution control button of the power curve in the centralized control center is selected), for each power point of the power curve, when the current moment reaches the time point corresponding to the power point, send the power control data corresponding to the power point to the main DC protection control system, so as to realize the automatic execution control of the power curve of the target DC converter station by the target DC converter station.

[0104] In a specific application, the main DC protection and control system is further configured to respond to the power control data and execute an action corresponding to the power control data.

[0105] In this embodiment, the master control position flag, the power control mode flag, and the power control mode set in the target DC converter station can determine the actual power control mode of each DC converter station.

[0106] In an exemplary embodiment, in the related art, the power control methods for a DC converter station include at least DC power remote automatic control (ADC (Automatic Direct-current Control) control, i.e., a control process of directly issuing control instructions to an on-site control system to adjust the DC power in real time), power curve automatic execution control (SAC control), power curve on-site execution control (SLC control), and manual control (LMC control). The general dispatching center needs to have overall control authority over the DC converter station. In addition, it is required that the power control authority and overall control authority of the DC converter station be relatively independent. For example, the overall control authority and the power control authority are not necessarily located in the same location. Therefore, in the related art, a overall control position identifier is usually configured in the DC converter station, a power control mode identifier is configured in the DC converter station, and a power control mode switching button is provided in the DC converter station. The actual power control mode and actual power control authority of the DC converter station are determined by the overall control position identifier, the power control mode identifier, and the power control mode switching button, as shown in Table 1:

[0107] Table 1 Original power control architecture of DC converter station

[0108]

[0109] Since the DC converter station in this application needs to be connected to the DC converter station centralized control system, this application makes the following improvements without affecting the original power control architecture shown in Table 1: First, it supports the modification of the overall control position identifier to the centralized control center. Second, a power control mode switching button is set in the centralized control center. The above improvements enable the centralized control center to have overall control authority over the DC converter station and power control authority corresponding to LMC control and SLC control while maintaining the original power control architecture, as shown in Table 2:

[0110] Table 2 New power control architecture for DC converter stations

[0111]

[0112] Figure 5 Schematic diagram of the new power control architecture shown in Table 2.

[0113] In one exemplary embodiment, the DC converter station centralized control system is based on a hierarchical distributed SCADA system. This system accesses four types of signals: remote control, remote regulation, telemetering, and telesignaling at the DC station via a front-end data acquisition server, and processes the data via a SCADA data processing server. This standardizes the communication protocols, system models, and underlying rules for signal transmission, data processing, and control management within the DC control and protection system. It also unifies the AC and DC data storage structures and access methods, achieving high performance and low latency for heterogeneous data processing.

[0114] In an exemplary embodiment, through the designed DC converter station centralized control system, if the number of connected DC converter stations needs to be increased, it is only necessary to increase the number of redundant software and hardware in the centralized control center, without adding new architectures and functions. This ensures loose coupling of data between different applications, and any application can be managed and horizontally expanded using a service cluster, achieving a smooth data expansion capability of 1 (centralized control center) + N (DC converter stations), solving the capacity and performance bottleneck problems of real-time data access to ultra-large-scale AC and DC sites in the power grid.

[0115] In an exemplary embodiment, by unified dispatching of control commands between the master (centralized control center) and substations (DC converter stations), and through multi-dimensional collaborative control technology of the master and substations, a multi-dimensional collaborative control mode of dispatching-centralized control center-converter station is established, which solves the limitations of traditional protocols on the system in terms of programmed control, automatic power control, etc. for AC / DC.

[0116] Each module in the DC converter station centralized control system described above can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0117] In an exemplary embodiment, based on the same inventive concept, the embodiment of the present application also provides a DC converter station centralized control method. The implementation solution for solving the problem provided by this method is similar to the implementation solution recorded in the above-mentioned system. Therefore, the specific limitations in one or more DC converter station centralized control method embodiments provided below can be found in the above limitations on the DC converter station centralized control system, which will not be repeated here.

[0118] like Figure 6 As shown, a DC converter station centralized control method is also provided, which is applied to Figure 1 Taking the centralized control center in FIG. 1 as an example, the method includes the following steps S602 to S606:

[0119] Step S602: receiving the internal data of the target DC converter station redundantly uploaded by the target DC converter station through the communication between each set of DC converter station control systems and each set of centralized control center control systems.

[0120] Among them, the DC converter station centralized control system also includes multiple DC converter stations. The centralized control center has at least two identical centralized control center control systems, and each DC converter station has at least two identical DC converter station control systems. Any set of centralized control center control systems is communicatively connected to any set of DC converter station control systems.

[0121] The target DC converter station is any one of the multiple DC converter stations.

[0122] Step S604: determining the master station data sent by the master DC converter station control system in each set of DC converter station control systems from the redundantly sent station data of the target DC converter station.

[0123] Step S606: Control information obtained based on data in the master station is sent to the target DC converter station through communication between the master centralized control center control system in each set of centralized control center control systems and each set of DC converter station control systems.

[0124] Among them, the target DC converter station is used to execute actions corresponding to the control information.

[0125] In this embodiment, through the communication between each set of centralized control center control systems in the centralized control center and each set of DC converter station control systems in each DC converter station, each DC converter station can send its own station data to the centralized control center, and the centralized control center can also send control information for each DC converter station to each DC converter station, so that each DC converter station performs corresponding actions; based on the above process, centralized monitoring of multiple DC converter stations can be achieved.

[0126] In an exemplary embodiment, based on the same inventive concept, the embodiment of the present application also provides a DC converter station centralized control method. The implementation solution for solving the problem provided by this method is similar to the implementation solution recorded in the above-mentioned system. Therefore, the specific limitations in one or more DC converter station centralized control method embodiments provided below can be found in the above limitations on the DC converter station centralized control system, which will not be repeated here.

[0127] like Figure 7 As shown, a DC converter station centralized control method is also provided, which is applied to Figure 1 Taking the DC converter station in FIG. 1 as an example, the method includes the following steps S702 to S704:

[0128] Step S702: The internal data redundancy of the target DC converter station is sent to the centralized control center through communication between the control systems of the DC converter stations and the control systems of the centralized control center.

[0129] Among them, the DC converter station centralized control system also includes multiple DC converter stations. The centralized control center has at least two identical centralized control center control systems, and each DC converter station has at least two identical DC converter station control systems. Any set of centralized control center control systems is communicatively connected to any set of DC converter station control systems.

[0130] The target DC converter station is any one of the multiple DC converter stations.

[0131] Among them, the centralized control center is used to determine the main station data sent by the main DC converter station control system in each set of DC converter station control systems from the redundant station data sent by the target DC converter station, and send the control information obtained based on the main station data to the target DC converter station through communication between the main centralized control center control system in each set of centralized control center control systems and each set of DC converter station control systems.

[0132] Step S704: Execute an action corresponding to the control information.

[0133] In this embodiment, through the communication between each set of centralized control center control systems in the centralized control center and each set of DC converter station control systems in each DC converter station, each DC converter station can send its own station data to the centralized control center, and the centralized control center can also send control information for each DC converter station to each DC converter station, so that each DC converter station performs corresponding actions; based on the above process, centralized monitoring of multiple DC converter stations can be achieved.

[0134] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and these steps can be performed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above may include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of the steps or stages in other steps or other steps. It is understandable that the various steps in different embodiments can be freely combined as needed, and the various non-contradictory schemes formed by the combination all fall within the scope of protection of this application.

[0135] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 8 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O) and a communication interface. The processor, memory and input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for centralized control of a DC converter station is implemented.

[0136] Those skilled in the art will understand that Figure 8The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0137] In an exemplary embodiment, a computer device is further provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0138] In an exemplary embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0139] In an exemplary embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0140] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0141] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0142] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A DC converter station centralized control system, characterized in that: The DC converter station centralized control system includes a centralized control center and multiple DC converter stations. The centralized control center has at least two identical centralized control center control systems. Each DC converter station has at least two identical DC converter station control systems. Any set of centralized control center control systems is communicatively connected to any set of DC converter station control systems. a target DC converter station, configured to transmit redundant internal data of the target DC converter station to the centralized control center through communication between each set of DC converter station control systems and each set of centralized control center control systems; the target DC converter station is any one of the multiple DC converter stations; The centralized control center is configured to determine, from the station data redundantly uploaded by the target DC converter station, the master station data uploaded by the master DC converter station control system in each set of DC converter station control systems; and to transmit control information obtained based on the master station data to the target DC converter station through communication between the master centralized control center control system in each set of centralized control center control systems and the DC converter station control systems. The target DC converter station is further configured to execute an action corresponding to the control information.

2. The system according to claim 1, wherein: The target DC converter station is configured with a general control position identification bit; The target DC converter station is further configured to, when the total control position identifier is the target DC converter station and a control position transfer request sent by the centralized control center is received, release the total control authority over the target DC converter station, transfer the total control authority to the centralized control center, and modify the total control position identifier to the centralized control center; The target DC converter station is further used to request the centralized control center to release the total control authority when the total control position identifier is the centralized control center and a control position transfer request sent by the target DC converter station is received, and to transfer the total control authority to the target DC converter station after the total control authority is released, and to modify the total control position identifier to the target DC converter station.

3. The system according to claim 2, characterized in that The target DC converter station is further configured to, when the total control position identifier is empty and a control position transfer request sent by the target DC converter station is received, transfer the total control authority to the target DC converter station, and modify the total control position identifier to the target DC converter station; The target DC converter station is further configured to transfer the general control authority to the centralized control center when the general control position identification bit is empty and a control position transfer request sent by the centralized control center is received, and to modify the general control position identification bit to the centralized control center.

4. The system according to claim 3, characterized in that The target DC converter station is further configured with a power control mode identification bit; when the master control position identification bit is the target DC converter station, the target DC converter station has the authority to modify the power control mode identification bit; when the master control position identification bit is the centralized control center, the centralized control center has the authority to modify the power control mode identification bit; The centralized control center is further configured to, when the master control position identifier is the centralized control center, the power control mode identifier is the manual control mode, and the power control mode set in the centralized control center is the power curve on-site execution control, perform the power curve on-site execution control on the target DC converter station through communication between the main centralized control center control system and the control systems of each set of DC converter stations; The centralized control center is also used to perform the manual control of the target DC converter station through communication between the main centralized control center control system and the control systems of each set of DC converter stations when the total control position identifier is the centralized control center, the power control mode identifier is the manual control mode, and the power control mode set in the centralized control center is manual control.

5. The system according to claim 3, wherein: The target DC converter station is further configured with a power control mode identification bit; when the master control position identification bit is the target DC converter station, the target DC converter station has the authority to modify the power control mode identification bit; when the master control position identification bit is the centralized control center, the centralized control center has the authority to modify the power control mode identification bit; The target DC converter station is further configured to perform power curve on-site execution control on the target DC converter station when the master control position identifier is the centralized control center, the power control mode identifier is the automatic control mode, and the power control mode set in the target DC converter station is power curve on-site execution control; The target DC converter station is further configured to perform the power curve automatic execution control on the target DC converter station when the total control position identifier is the centralized control center, the power control mode identifier is the automatic control mode, and the power control mode set in the target DC converter station is the power curve automatic execution control.

6. A centralized control method for a DC converter station, characterized in that: The method is applied to a centralized control center in a DC converter station centralized control system, wherein the DC converter station centralized control system further includes a plurality of DC converter stations, the centralized control center has at least two identical centralized control center control systems, each DC converter station has at least two identical DC converter station control systems, and any centralized control center control system is communicatively connected to any DC converter station control system; the method includes: receiving internal data of the target DC converter station redundantly transmitted by the target DC converter station through communication between each set of DC converter station control systems and each set of centralized control center control systems; the target DC converter station is any one of the multiple DC converter stations; Determining, from the station data redundantly transmitted by the target DC converter station, the master station data transmitted by the master DC converter station control system in each set of DC converter station control systems; Through the communication between the main centralized control center control system in each set of centralized control center control systems and the each set of DC converter station control systems, the control information obtained based on the data in the master station is sent to the target DC converter station; the target DC converter station is used to execute actions corresponding to the control information.

7. A DC converter station centralized control method, characterized in that: The method is applied to a target DC converter station among multiple DC converter stations in a DC converter station centralized control system, wherein the target DC converter station is any one of the multiple DC converter stations, and the DC converter station centralized control system further includes a centralized control center, wherein the centralized control center has at least two identical centralized control center control systems, and each DC converter station has at least two identical DC converter station control systems, and any centralized control center control system is communicatively connected to any DC converter station control system; the method includes: The in-station data of the target DC converter station is redundantly uploaded to the centralized control center through communication between each set of DC converter station control systems and each set of centralized control center control systems; the centralized control center is used to determine the master in-station data uploaded by the master DC converter station control system in each set of DC converter station control systems from the redundant in-station data uploaded by the target DC converter station, and to send the control information obtained based on the master in-station data to the target DC converter station through communication between the master centralized control center control system in each set of centralized control center control systems and each set of DC converter station control systems; Execute an action corresponding to the control information.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to claim 6 or 7 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 6 or 7 are implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to claim 6 or 7 are implemented.

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