A method for checking the state of a soft pad of a protection device of a smart substation

Abstract

The application provides a kind of intelligent substation protection device soft pressure plate state inspection method, including monitoring system start remote control, judge whether the communication of the protection device to be operated is normal;Based on the normal communication of the protection device to be operated, judge whether the soft pressure plate of protection device is remotely controlled to be put into;Based on the soft pressure plate of protection device is remotely controlled to be put into, judge whether the management CPU return information is normal;Based on the management CPU return information is normal, judge whether the protection device operation record is correct;Based on the protection device operation record is correct, judge whether the protection CPU setting value printing is started;Based on the protection CPU setting value printing is started, judge whether the soft pressure plate information in printing setting value is consistent with monitoring system.The application realizes the proofreading of the remote control result of soft pressure plate by monitoring system, so as to avoid the problem that the pressure plate state displayed by monitoring system is inconsistent with the actual under the abnormal situation such as communication interruption between each CPU in protection equipment.

Description

Technical Field

[0001] This invention belongs to the field of power systems, and in particular relates to a method for inspecting the condition of soft pressure plates in intelligent substation protection devices. Background Technology

[0002] Currently, intelligent substation protection devices only retain hard pressure plates for maintenance status, while all other functional pressure plates use soft pressure plates. The activation and deactivation of soft pressure plates are controlled remotely by the monitoring system.

[0003] The control process is as follows: the monitoring system sends the operation instructions to the management CPU of the protection device in the form of messages, the management CPU then sends the operation instructions to the protection CPU, and the protection CPU executes the activation and deactivation of the soft pressure plate.

[0004] In some manufacturers' equipment, after the management CPU of the protection device forwards the operation command to the protection CPU, it immediately sends a message to the monitoring system that the soft switch operation is complete. The problem with this mechanism is that the management CPU does not check whether the protection CPU successfully performs the soft switch engagement / disengagement. If there is a communication failure between the management CPU and the protection CPU, the monitoring system will not be able to accurately reflect the status of the protection soft switch.

[0005] Remote control of soft pressure plates generally requires a double confirmation method. However, the information currently read by the monitoring system and the information read by the protection substation are all information sent by the protection device management CPU, which does not meet the double confirmation requirement.

[0006] It should also be noted that when the protection device prints the set value, the content is the result directly output by the protection CPU.

[0007] This method proposes a way to verify the remote control results of the soft pressure plate by checking the output setpoint information of the protection CPU without changing the existing protection device software version and working mode. This avoids the problem that the pressure plate status displayed by the monitoring system is inconsistent with the actual status under abnormal conditions such as communication interruption between CPUs inside the protection device. Summary of the Invention

[0008] In view of this, the purpose of the present invention is to provide a method for checking the status of the soft pressure plate of an intelligent substation protection device, so as to avoid the problem that the status of the pressure plate displayed by the monitoring system is inconsistent with the actual status under abnormal circumstances such as communication interruption between CPUs inside the protection device.

[0009] In a first aspect, embodiments of the present invention provide a method for inspecting the condition of a soft pressure plate in a smart substation protection device, comprising:

[0010] Step 1: The monitoring system initiates remote control operation to determine if the communication of the protection device to be operated is normal.

[0011] If yes, proceed to step 2; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0012] Step 2: Based on the normal communication of the protection device to be operated, determine whether to remotely activate the protection device's soft pressure plate.

[0013] If yes, proceed to step 3; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0014] Step 3: Based on the remote control activation protection device soft pressure plate, determine whether the information returned by the management CPU is normal.

[0015] If yes, proceed to step 4; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0016] Step 4: Based on the normal return information from the management CPU, determine whether the operation record of the protection device is correct.

[0017] If yes, proceed to step 5; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0018] Step 5: Based on the correct operation record of the protection device, determine whether to initiate the protection CPU setting printing.

[0019] If yes, proceed to step 6; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0020] Step 6: Based on the CPU setting value printing during startup protection, determine whether the soft pressure plate information in the printed setting value is consistent with the monitoring system.

[0021] If yes, the soft pressure plate remote control is working properly and should be terminated; otherwise, the soft pressure plate remote control is malfunctioning and should be terminated.

[0022] Furthermore, the monitoring system is used to send operation instructions to the management CPU of the protection device in the form of messages.

[0023] Furthermore, the content printed with the fixed value is used to protect the results directly output by the CPU.

[0024] Secondly, embodiments of the present invention provide a system for verifying the condition of a soft pressure plate of an intelligent substation protection device, comprising:

[0025] The monitoring system module is used to check that the communication status with the protection device to be operated is good, and to remotely activate the soft pressure plate of the protection device.

[0026] The protection device module is used to check whether the information returned by the management CPU is normal, and to ensure that the protection device has a record of the soft pressure plate being put into operation this time.

[0027] The CPU protection execution module is used to initiate the printing of CPU protection settings and read the CPU protection output settings information.

[0028] The verification module is used to verify the status information of the corresponding soft pressure plate and provide the verification result.

[0029] The embodiments of the present invention bring the following beneficial effects:

[0030] This invention provides a method for verifying the status of soft pressure plates in intelligent substation protection devices. Without changing the existing protection device software version and working mode, it proposes a method to verify the remote control results of the soft pressure plates by checking the set value information output by the protection CPU. This avoids the problem that the pressure plate status displayed by the monitoring system is inconsistent with the actual status under abnormal circumstances such as communication interruption between CPUs inside the protection device.

[0031] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0033] Figure 1 A flowchart illustrating the method for verifying the condition of the soft pressure plate of an intelligent substation protection device, provided in an embodiment of the present invention. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Based on this, the present invention provides a method for verifying the status of a soft pressure plate in a smart substation protection device, which can avoid the problem that the pressure plate status displayed by the monitoring system is inconsistent with the actual status under abnormal circumstances such as communication interruption between CPUs inside the protection device.

[0036] To facilitate understanding of this embodiment, a detailed description of the method for verifying the condition of a soft pressure plate of an intelligent substation protection device disclosed in this embodiment of the invention will be provided first, including:

[0037] Step 1: The monitoring system initiates remote control operation to determine if the communication of the protection device to be operated is normal.

[0038] If yes, proceed to step 2; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0039] Step 2: Based on the normal communication of the protection device to be operated, determine whether to remotely activate the protection device's soft pressure plate.

[0040] If yes, proceed to step 3; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0041] Step 3: Based on the remote control activation protection device soft pressure plate, determine whether the information returned by the management CPU is normal.

[0042] If yes, proceed to step 4; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0043] Step 4: Based on the normal return information from the management CPU, determine whether the operation record of the protection device is correct.

[0044] If yes, proceed to step 5; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0045] Step 5: Based on the correct operation record of the protection device, determine whether to initiate the protection CPU setting printing.

[0046] If yes, proceed to step 6; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends.

[0047] Step 6: Based on the CPU setting value printing during startup protection, determine whether the soft pressure plate information in the printed setting value is consistent with the monitoring system.

[0048] If yes, the soft pressure plate remote control is working properly and should be terminated; otherwise, the soft pressure plate remote control is malfunctioning and should be terminated.

[0049] Furthermore, in step 5, CPU fixed value printing is initiated. The content of the printed fixed value is used to protect the results directly output by the CPU.

[0050] Furthermore, the monitoring system is used to send operation instructions to the management CPU of the protection device in the form of messages.

[0051] Furthermore, the content printed with the fixed value is used to protect the results directly output by the CPU.

[0052] In this embodiment, the control process is as follows: the monitoring system sends the operation command to the management CPU of the protection device in the form of a message. The management CPU then sends the operation command to the protection CPU, which executes the activation or deactivation of the soft pressure plate. The management CPU of the protection device checks whether there is a record of the activation or deactivation of the soft pressure plate for this operation, and starts the protection CPU setting value printing. It reads the setting value information output by the protection CPU, thereby ensuring normal communication between the management CPU and the protection CPU and realizing the dual confirmation method for remote control of the soft pressure plate.

[0053] In this embodiment, in a second aspect, the present invention provides a smart substation protection device soft pressure plate status inspection system, comprising:

[0054] The monitoring system module is used to check that the communication status with the protection device to be operated is good, and to remotely activate the soft pressure plate of the protection device.

[0055] The protection device module is used to check whether the information returned by the management CPU is normal, and to ensure that the protection device has a record of the soft pressure plate being put into operation this time.

[0056] The CPU protection execution module is used to initiate the printing of CPU protection settings and read the CPU protection output settings information.

[0057] The verification module is used to verify the status information of the corresponding soft pressure plate and provide the verification result.

[0058] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0059] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for inspecting the condition of a soft pressure plate in a smart substation protection device, characterized in that, include: Step 1: The monitoring system initiates remote control operation to determine if the communication of the protection device to be operated is normal. If so, proceed to step 2; If not, the remote control of the soft pressure plate is malfunctioning and will terminate. Step 2: Based on the normal communication of the protection device to be operated, determine whether to remotely activate the protection device's soft pressure plate. If so, proceed to step 3; If not, the remote control of the soft pressure plate is malfunctioning and will terminate. Step 3: Based on the remote control activation protection device soft pressure plate, determine whether the information returned by the management CPU is normal. If yes, proceed to step 4; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends. Step 4: Based on the normal return information from the management CPU, determine whether the operation record of the protection device is correct. If yes, proceed to step 5; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends. Step 5: Based on the correct operation record of the protection device, determine whether to initiate the protection CPU setting printing. If yes, proceed to step 6; otherwise, the remote control of the soft pressure plate is malfunctioning, and the remote control operation ends. Step 6: Based on the CPU setting value printing during startup protection, determine whether the soft pressure plate information in the printed setting value is consistent with the monitoring system. If so, the remote control for the soft pressure plate is working properly, and the remote control operation ends. If not, the remote control of the soft pressure plate is malfunctioning, and the remote control operation will be terminated.

2. The method for inspecting the condition of the soft pressure plate of the intelligent substation protection device according to claim 1, characterized in that, The monitoring system is used to send operation instructions to the management CPU of the protection device in the form of messages.

3. The method for checking the status of the soft pressure plate of the intelligent substation protection device according to claim 1, wherein step 5 involves starting the protection CPU setting value printing, characterized in that... The content printed at the specified value is used to protect the results directly output by the CPU.

4. A system for checking the condition of a soft pressure plate in an intelligent substation protection device, characterized in that, include: The monitoring system module is used to check that the communication status with the protection device to be operated is good, and to remotely activate the soft pressure plate of the protection device. The protection device module is used to check whether the information returned by the management CPU is normal, and to ensure that the protection device has a record of the soft pressure plate being put into operation this time. The CPU protection execution module is used to initiate the printing of CPU protection settings and read the CPU protection output settings information. The verification module is used to verify the status information of the corresponding soft pressure plate, determine whether the soft pressure plate information in the printed set value is consistent with the monitoring system, and give the verification result.

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