Method and system for remotely switching operation state of stability control system

Abstract

The invention discloses a method and system for remotely switching the operation state of a stability control system, and the method comprises the steps: setting a stability control management main station which is used for remotely controlling the stability control system, and building communication connection with each stability control device in the stability control system; defining various operation states and effectiveness strength of the stability control device; determining an operation state information collection path and a state switching instruction transmission path of each stability control device, and reporting the operation state of each stability control device to a stability control management master station through the operation state information collection path; the stability control management master station issues a state switching instruction through a state switching instruction transmission path according to the obtained user instruction, and the stability control device or the stability control system determines whether to execute operation state switching according to the effectiveness strength of the state switching instruction; according to the method, remote rapid switching of the operation state of the stability control system device can be realized, a large amount of time consumed by manual operation is reduced, and the state switching efficiency of the stability control device is improved.

Description

Technical Field

[0001] The present invention relates to power system and its automation technology, and particularly to a method and system for remotely switching the operating state of a stability control system. Background Art

[0002] With the continuous expansion of the scale of the power system, especially the formation of UHV AC / DC cross-regional networking, the stability control system, as a key device to ensure the safe and stable operation of the power system, plays an increasingly important role. The stability control system ensures that the power system can quickly restore balance when a fault or load change occurs by monitoring and adjusting the operating state of the power grid in real time, preventing the collapse of the power system. At the same time, with the construction of large-scale stability control systems such as system protection projects and precise load shedding projects, the scale of the stability control system is gradually increasing, and the technical requirements are also getting higher and higher.

[0003] Currently, the switching of the operating state of the stability control system mainly relies on the traditional manual operation method, that is, serial operations are carried out in sequence according to the priority and importance of the equipment, including specifically switching the operating state of the stability control device, adjusting the input and output of related devices, and adjusting the operating conditions of the entire system. These operations are generally completed jointly by dispatching management personnel and on-site operation and maintenance personnel.

[0004] However, with the complexity of the power system grid structure, the traditional serial operation method requires a large amount of time for manual switching operations one by one, resulting in too long operation time, increasing the workload of dispatching and operation and maintenance personnel, and enhancing the operation risk of the power system. Summary of the Invention

[0005] Object of the Invention: The object of the present invention is to provide a method for remotely switching the operating state of a stability control system to improve the efficiency of switching the state of the stability control device. On the other hand, a system for remotely switching the operating state of a stability control system is provided.

[0006] Technical Solution: A method for remotely switching the operating state of a stability control system according to the present invention includes the following steps:

[0007] (1) Set up a stability control management master station for remotely controlling the stability control system and establish a communication connection with each stability control device in the stability control system;

[0008] (2) Define various operating states of the stability control device and their effectiveness intensities;

[0009] (3) Determine the collection path of the operating state information of each stability control device and the transmission path of the state switching instruction, and report the operating state of each stability control device to the stability control management master station through the collection path of the operating state information;

[0010] (4) The stability control management master station issues a status switching instruction through the status switching instruction transmission path according to the obtained user instruction. Among them, the stability control management master station can issue a status switching instruction to some of the stability control devices in the stability control system, or can also issue a status switching instruction to the entire stability control system. The stability control device or the stability control system decides whether to perform the operation status switching according to the effectiveness intensity of the status switching instruction.

[0011] Preferably, the various operation states of the stability control device described in step 2 include a deactivated state Soff, a signal state Smid, and an activated state Son, and their effectiveness intensities are Poff, Pmid, and Pon in sequence, where Poff is stronger than Pmid, and Pmid is stronger than Pon.

[0012] Preferably, when the stability control device switches to the activated state, the control strategy of the device is enabled and executed; when the stability control device switches to the signal state, the control strategy of the device is enabled but not executed; when the stability control device switches to the deactivated state, the device does not participate in the system control logic judgment.

[0013] Preferably, the status switching path issued in step 4 includes: the stability control management master station can issue a status switching instruction to some of the stability control devices in the stability control system, or can also issue a status switching instruction to the entire stability control system.

[0014] Preferably, the decision on whether to perform the operation status switching described in step 4 includes: the stability control device or the stability control system compares the effectiveness intensity of the operation state corresponding to the status switching instruction with the operation state of the stability control device itself. If the effectiveness intensity of the operation state corresponding to the instruction is stronger than the effectiveness intensity of the operation state of the stability control device itself, the stability control device or the stability control system switches to the instruction operation state, otherwise the stability control device or the stability control system maintains the current operation state.

[0015] Preferably, when the effectiveness intensity of the operation state of the stability control device itself is stronger than the operation state corresponding to the status switching instruction, the stability control management master station gives an alarm, otherwise the stability control device gives an alarm.

[0016] Preferably, when the communication connection between the stability control device and the stability control management master station is disconnected, the stability control device automatically switches to the local operation state.

[0017] A system for remotely switching the operation state of a stability control system according to the present invention includes: a stability control management master station, a stability control system, and a communication link; the stability control management master station includes: a human-computer interaction module for displaying the operation state of the stability control system and inputting a status switching instruction; a communication module for real-time communication with the stability control system; a judgment and alarm module for comparing the effectiveness intensity of the operation state of the stability control device itself with the operation state corresponding to the status switching instruction and outputting an alarm signal.

[0018] A computer-readable storage medium according to the present invention stores a computer program thereon, and when the computer program is executed by a processor, it implements the method for remotely switching the operating state of the stability control system according to any one of claims 1 to 7.

[0019] An electronic device according to the present invention includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, it implements the method for remotely switching the operating state of the stability control system according to any one of claims 1 to 7.

[0020] Advantages: Compared with the prior art, the present invention has the following remarkable advantages: 1. It realizes the remote and rapid switching of the operating state of the stability control system device, reduces the large amount of time consumed by manual operation, and improves the efficiency of the stability control device state switching; 2. It decides whether to perform state switching according to the effectiveness intensity of different operating states of the stability control device, providing flexible and precise control over the state switching of the stability control device; 3. Through the communication between the stability control management master station and each stability control device, the system can obtain and display the operating state of each stability control device in real time, optimizing the response speed and stability of the entire system; 4. The fault warning and automatic emergency switching mechanism can reduce potential faults or system out-of-control, further improving the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flow schematic diagram of the method of the present invention;

[0022] Figure 2 It is a schematic diagram of the information collection and instruction distribution path of the present invention;

[0023] Figure 3 It is a structural diagram of the system of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] The technical solution of the present invention will be further described below in conjunction with the drawings.

[0025] Figure 1 It is a flow schematic diagram of a method for remotely switching the operating state of a stability control system according to the present invention, including the following steps:

[0026] (1) Set up a stability control management master station for remotely controlling the stability control system, and establish a communication connection with each stability control device in the stability control system. The stability control management master station is deployed in the dispatching center or regional hub substation, and a direct communication connection is selected between the stability control system control master station and the stability control management master station; by setting the stability control management master station, centralized management of each stability control device is realized. The communication connection between the stability control management master station and the stability control device ensures the reliability and real-time nature of remote management, reduces the risk of manual operation, and improves the automation and monitoring capabilities of the system;

[0027] (2) Define various operating states of the stability control device and their effectiveness intensities. The operating states include the deactivated state S off , the signal state S mid and the activated state S on , and their effectiveness intensities are P off , P mid and P on respectively, where P off is stronger than P mid , and P mid is stronger than P on ; enabling different stability control devices to perform different levels of control according to instructions, thereby ensuring the flexibility and emergency response capabilities of the system under different conditions; when the stability control device switches to the activated state, the control strategy of the device is enabled and can be output; when the stability control device switches to the signal state, the control strategy of the device is enabled but not output; when the stability control device switches to the deactivated state, the device does not participate in the system control logic judgment; this design ensures that the stability control device can play its due role under different working states, while avoiding unnecessary interference, and improving the flexibility, efficiency and stability of the system;

[0028] (3) Determine the collection path of the operating state information and the transmission path of the state switching instruction for each stability control device. The collection path of the operating state information and the transmission path of the state switching instruction are single paths with opposite directions. Report the operating states of each stability control device to the main stability control management station through the collection path of the operating state information; by designing a single communication path with opposite directions, the simplicity and efficiency of data transmission are ensured. The collection path of the operating state information can feedback the operating state of the stability control device in real time, ensuring the timely monitoring of the main stability control management station; while the transmission path of the state switching instruction ensures the accurate execution of the instruction, enhancing the efficiency and synchronization of system operations;

[0029] (4) The main stability control management station issues a state switching instruction through the transmission path of the state switching instruction according to the obtained user instruction. The stability control device or the stability control system decides whether to perform the operating state switching according to the effectiveness intensity of the state switching instruction, specifically including: the stability control device or the stability control system compares the effectiveness intensity of the operating state corresponding to the state switching instruction with the effectiveness intensity of the operating state of the stability control device itself. If the effectiveness intensity of the operating state corresponding to the instruction is stronger than the effectiveness intensity of the operating state of the stability control device itself, the stability control device or the stability control system switches to the instruction operating state, otherwise the stability control device or the stability control system maintains the current operating state; the main stability control management station issues a state switching instruction according to the user instruction and judges whether to perform the switching through the comparison of the effectiveness intensity, ensuring the flexibility and intelligent response of the system. It can effectively make the optimal decision in different situations, avoid misoperations, and at the same time reduce the need for manual intervention, improving the automation level.

[0030] When the local operating state of the stability control device is inconsistent with the operating state set by the stability control management master station, the stability control device or the stability control management master station gives an alarm. That is, when the strength of the operating state of the stability control device itself is stronger than the operating state corresponding to the state switching instruction, the stability control management master station gives an alarm; otherwise, the stability control device gives an alarm. The alarm mechanism ensures the healthy state of the system and timely response. If the local operating state of the stability control device is inconsistent with the set state, the alarm mechanism can quickly prompt faults or abnormal situations. This mechanism can improve the speed of fault detection, take timely measures, and ensure the stable operation of the system.

[0031] When the communication connection between the stability control device and the stability control management master station is disconnected, the stability control device automatically switches to the local operating state. This design ensures that the system can still operate stably during communication interruptions or network failures, avoiding the paralysis of the entire system caused by communication problems, and improving the robustness and fault tolerance of the system.

[0032] To more clearly introduce the specific implementation manners of the present invention, the following describes the content involved in the above embodiments in combination with an actual example.

[0033] A provincial dispatching control stability control system of a certain power company adopts a typical communication architecture as Figure 2 shown. This stability control system includes three-layer architectures: a control master station layer, a control sub-station layer, and an execution station layer. Among them, the control master station communicates with each control sub-station, and the control sub-station communicates with the corresponding execution station through the multiplexed 2M method. Assume that a stability control management master station is deployed at a certain operation and maintenance center station in this province, and a communication link is selected between the stability control master station and the stability control management master station. The communication methods can include multiplexed 2M, optical fiber, dispatching data network, etc. For a stability control system designed according to a hierarchical architecture, the collection path of the operating state information of the stability control device can be selected as "control execution station -> control sub-station -> control master station -> stability control management master station", as shown by the black arrow in the figure; the path of the state switching instruction of the stability control device can be selected as "stability control management master station -> control master station -> control sub-station -> control execution station", as shown by the red arrow in the figure.

[0034] The operating state information of the stability control device and the state switching instruction of the stability control device adopt the following data format.

[0035] Table 1 Data format table of the operating state information of the stability control device and the state switching instruction of the stability control device

[0036]

[0037] When putting this stability control system into use, the conventional operation steps in the past were as follows:

[0038] (1) Put the control master station device into use, specifically including: the dispatching desk orders the control master station to put the control master station device into use -> the operation and maintenance personnel operate on-site to put the device into use -> the operation and maintenance personnel report to the dispatching desk that the control master station device has been put into use;

[0039] (2) After the main control station device is put into use, put into use each control sub-station device in sequence. The operation steps for each sub-station are the same as those for the main control station;

[0040] (3) After all control sub-station devices are put into use, put into use each execution station device in sequence. The operation steps for each execution station are the same as those for the main control station.

[0041] When the stability control system needs to be taken out of service for regular inspection or upgrading and transformation, the conventional operation steps in the past were as follows:

[0042] (1) Take out of service the execution station devices in sequence, specifically including: the dispatching desk gives an order to the execution station to take it out of service -> the operation and maintenance personnel operate on-site to take the device out of service -> the operation and maintenance personnel report to the dispatching desk that the execution station device has been taken out of service;

[0043] (2) After all execution station devices are taken out of service, take out of service each control sub-station device in sequence. The operation steps for each sub-station are the same as those for the execution station;

[0044] (3) After all control sub-station devices are taken out of service, take out of service the main control station device. The operation steps for the main station are the same as those for the execution station.

[0045] Obviously, during the process of putting the stability control system into service and taking it out of service, it is necessary to follow a fixed sequence and operate in sequence, which brings huge workload to the dispatching desk and on-site operation and maintenance personnel and consumes a lot of time. As the scale of the stability control system continues to expand, the operation time for putting the stability control system into and out of service becomes longer and longer.

[0046] Using this method, the operation steps for putting this stability control system into service are as follows:

[0047] (1) The stability control management main station switches this stability control system to the put-into-service state. At this time, the local of the stability control system is in the out-of-service state because the system is still in the out-of-service state, and at the same time, the stability control management main station gives an alarm;

[0048] (2) The operation and maintenance personnel of the main control station, each control sub-station, and each execution station of the stability control system operate their respective devices to the local put-into-service state;

[0049] (3) When all substation devices are switched to the local put-into-service state, the alarm of the stability control management main station is eliminated. At this time, the stability control system is switched to the put-into-service state.

[0050] Using this method, the operation steps for taking this stability control system out of service are as follows:

[0051] (1) The stability control management main station switches this stability control system to the out-of-service state. At this time, the local of the stability control system is in the put-into-service state because the system is switched to the out-of-service state, and at the same time, the devices at each station of the stability control system give an alarm;

[0052] (2) The operation and maintenance personnel of the main control station, each control sub-station, and each execution station of the stability control system switch their respective operating devices to the local deactivated state. At this time, the alarms of the stability control system are eliminated and it switches to the deactivated state.

[0053] It can be seen that by using this method, the switching-on and switching-off of devices at each substation can be operated simultaneously without the need for serial operations, which greatly improves work efficiency, reduces operation time, and is safe and reliable when using this method.

[0054] When a device at a certain substation of the stability control system needs to be deactivated for regular inspection or defect elimination, the conventional operation steps in the past were as follows:

[0055] (1) Deactivate the device at this station, specifically including: the dispatching desk orders the device at this station to be deactivated -> the operation and maintenance personnel operate on-site to deactivate the device -> the operation and maintenance personnel report to the dispatching desk that the device at this station has been deactivated;

[0056] (2) After the device at this station is deactivated, deactivate the communication channels of the devices with channel connections to this station in sequence, specifically including: the dispatching desk orders the corresponding substation to deactivate the communication channels of the devices to a certain station -> the operation and maintenance personnel operate on-site -> the operation and maintenance personnel report to the dispatching desk that the operation is completed.

[0057] It can be seen that when a single substation device is switched to the deactivated state, all substation devices with channel connections to it need to be operated, involving many substations and long operation time. For example, when control sub-station 1 is deactivated, the main control station, execution stations 1-1, 1-2... 1-n all need to be operated.

[0058] When using this method, the operation steps for deactivating the device at this station are as follows:

[0059] (1) The main stability control management station switches the device at this station to the deactivated state. At this time, the device is in the switched-on state locally, so when the device is switched to the deactivated state, an alarm signal is output at the same time;

[0060] (2) The operation and maintenance personnel at this station operate the device to the local deactivated state. At this time, the alarm of the device is eliminated and the state is switched to the deactivated state; after the other substations identify that this station is in the deactivated state, they no longer judge the channel alarms related to this station and no longer include this station in the control logic.

[0061] When using this method to deactivate the devices of the selected substations, only the main stability control management station and the substations that need to be deactivated are involved, narrowing the scope of work and improving the operation efficiency.

[0062] Figure 3The structure diagram of a system for remotely switching the operating state of a stability control system according to the present invention includes a stability control management master station, a regional stability control system, and a communication link. The stability control management master station includes the following modules: a human-computer interaction module for displaying the operating state of the stability control system and inputting commands for switching the operating state of the stability control system; a communication module for real-time communication with the stability control system; a judgment and alarm module for outputting an alarm signal when it is determined that the local operating state of the stability control device is inconsistent with the operating state set by the stability control management master station. The stability control system is capable of communicating with the stability control management master station, sending the local operating state of the device, receiving commands for switching the operating state from the stability control management master station, and implementing the switching of the operating state.

[0063] The computer-readable storage medium according to the present invention stores a computer program thereon. When the program is executed by a processor, it realizes the steps of the method described in the above embodiments and can achieve the same technical effects as the above method. The computer storage medium can be any combination of one or more computer-readable media, and can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium include: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or combined with an instruction execution system, apparatus, or device.

[0064] The computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries the computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device.

[0065] The program code contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to wireless, wire, optical fiber, RF, etc., or any suitable combination of the above.

[0066] Computer program code for performing the operations of the present invention may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0067] Of course, the computer-executable instructions of a storage medium provided by an embodiment of the present invention are not limited to the above method operations, and may also execute related operations in the methods provided by any embodiment of the present invention.

Claims

1. A method for remotely switching the operating state of a stabilization control system, characterized in that: The following steps are involved: (1) Setting up a stabilization control management master station for remotely controlling the stabilization control system and establishing communication connections with each stabilization control device in the stabilization control system; (2) Define the various operating states of the stabilization and control device and their effectiveness; (3) determining the operation status information collection path and the state switching instruction transmission path of each stabilization and control device, and reporting the operation status of each stabilization and control device to the stabilization and control management master station through the operation status information collection path; (4) The main stabilization and control management station sends a state switching instruction through the state switching instruction transmission path according to the acquired user instruction, and the stabilization and control device or stabilization and control system decides whether to execute the operation state switching according to the effectiveness strength of the state switching instruction.

2. The method for remotely switching the operating state of a stabilization control system according to claim 1, characterized in that: The various operating states of the stabilization device described in step 2 include the deactivated state S off , signal status S mid and commissioning status S on , and their effectiveness is P off , P mid and P on , where P off Stronger than P mid , P mid Stronger than P on .

3. The method for remotely switching the operating state of a stabilization control system according to claim 2, characterized in that: If the stabilization control device is switched to the commissioning state, the control strategy of the device is enabled and executed; if the stabilization control device is switched to the signal state, the control strategy of the device is enabled but not executed; if the stabilization control device is switched to the deactivated state, the device does not participate in the system control logic judgment.

4. The method for remotely switching the operating state of a stabilization control system according to claim 1, characterized in that: The sending of the state switching instruction described in step 4 includes: the stabilization and control management master station can send the state switching instruction to some stabilization and control devices in the stabilization and control system, and can also send the state switching instruction to the entire stabilization and control system.

5. The method for remotely switching the operating state of a stabilization control system according to claim 1, characterized in that: The decision of whether to execute the operating state switch described in step 4 includes: the stabilization control device or the stabilization control system compares the effectiveness strength of the operating state corresponding to the state switching instruction with the operating state of the stabilization control device itself; if the effectiveness strength of the operating state corresponding to the instruction is stronger than the effectiveness strength of the operating state of the stabilization control device itself, the stabilization control device or the stabilization control system switches to the instruction operating state; otherwise, the stabilization control device or the stabilization control system maintains the current operating state.

6. The method for remotely switching the operating state of a stabilization control system according to claim 1, characterized in that: Also includes: When the operating status of the stabilization and control device itself is stronger than the operating status corresponding to the state switching instruction, the stabilization and control management master station will alarm, otherwise the stabilization and control device will alarm.

7. The method for remotely switching the operating state of a stabilization control system according to claim 1, characterized in that: Also includes: When the communication connection between the stabilization control device and the stabilization control management main station is disconnected, the stabilization control device automatically switches to the local operation state.

8. A system for remotely switching the operating state of a stabilization control system, characterized in that: include: Main station for stable control management, stable control system and communication links; The stability control management master station includes: Human-computer interaction module, used to display the operating status of the stabilization control system and input state switching instructions; Communication module, used for real-time communication with the stability control system; The judgment module is used to compare the effectiveness of the operating state of the stabilization control device itself with the operating state corresponding to the state switching instruction.

9. The system for remotely switching the operating state of a stabilization control system according to claim 8, characterized in that: The stability control management master station also includes an alarm module for outputting an alarm signal.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for remotely switching the operating state of a stabilization control system according to any one of claims 1 to 7 is implemented.

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