A method and device for analyzing operating conditions of distribution automation switches

Abstract

The present invention discloses a method and device for analyzing the operating conditions of a distribution automation switch. The method comprises: obtaining setting parameters of the distribution automation switch from a remote data acquisition device; generating a theoretical action sequence table of the distribution automation switch based on the setting parameters; obtaining the action parameters of the distribution automation switch from the remote data acquisition device when the action record of the distribution automation switch changes; generating an actual action sequence table of the distribution automation switch based on the action parameters; if each parameter in the actual action sequence table corresponds one-to-one with each parameter in the theoretical action sequence table, the distribution automation switch is in good operating condition. By using the embodiments of the present invention, the operating conditions of the distribution automation switch can be remotely and automatically analyzed, reducing the time cost of repair delays caused by incorrect operation of the distribution automation switch; improving the efficiency of analyzing the correctness of the operation of the distribution automation switch and greatly reducing the time cost of analysis.

Description

Technical Field

[0001] The present invention relates to the field of power grid equipment operation and maintenance, and in particular to a distribution automation switch operating condition analysis device. Background Art

[0002] In recent years, my country's social economy has developed rapidly, and people's living standards have continued to improve. The proportion of various precision manufacturing equipment put into enterprises' production processes has also increased. Correspondingly, this has placed higher demands on power grid companies in ensuring safe and reliable power supply. Therefore, power grid companies have widely promoted the application of distribution automation switches in the distribution network field in recent years.

[0003] Distribution automation switches can be installed at the beginning of the main line, branch line, or branch line of a 10kV distribution network. They can quickly locate and isolate faults and restore power to non-faulty sections when a fault occurs in a 10kV line or equipment, significantly improving power supply reliability for users. With the increasing application of distribution automation switches in distribution networks, the number and frequency of their actuation are also increasing. Analysis of the correctness of the operation of distribution automation switches can accurately identify defects and hidden dangers in distribution automation switches. Existing distribution automation master stations only collect records of accident events generated when distribution automation switches are actuated. Subsequent manual analysis of the operation of distribution automation switches on each line is required.

[0004] At present, distribution network operation and maintenance personnel need to manually compare the actual operation of the distribution automation switch with the set value and action logic settings based on the operation of the distribution automation switch recorded by the master station, which is time-consuming. Moreover, when a 10kV line fails, the distribution automation switch on the line will perform a large number of opening and closing actions. When manually analyzing the correctness of the distribution automation switch operation, the analysis results are easily inaccurate due to the mistakes of the analysts. After the fault occurs, if the distribution automation switch has an erroneous operation, it will interfere with the rescue plan arrangement of the operation and repair personnel. The back-end staff of the dispatching master station can only discover the abnormality after manually analyzing the accident event records of the distribution automation switch, delaying the repair time. Summary of the Invention

[0005] The embodiments of the present invention provide a method and device for analyzing the operating conditions of distribution automation switches, which can remotely and automatically analyze the operating conditions of distribution automation switches, reduce the time cost of delays in emergency repairs caused by incorrect operation of distribution automation switches, improve the efficiency of analyzing the correctness of distribution automation switch operation and greatly reduce the time cost of analysis.

[0006] A first aspect of an embodiment of the present application provides a method for analyzing operating conditions of a distribution automation switch, comprising:

[0007] Obtaining the setting parameters of the distribution automation switch from the remote data acquisition device;

[0008] Generate a theoretical action timing table of the distribution automation switch according to the setting parameters;

[0009] When the action record of the distribution automation switch changes, obtaining the action parameters of the distribution automation switch from the remote data acquisition device;

[0010] Generating an actual action sequence table of the distribution automation switch according to the action parameters;

[0011] If the parameters in the actual action sequence table correspond one to one with the parameters in the theoretical action sequence table, the distribution automation switch is in good working condition.

[0012] In a possible implementation of the first aspect, the remote data acquisition device is installed in a control box of the distribution automation switch, and the remote data acquisition device is connected to the distribution automation switch via Ethernet.

[0013] In a possible implementation of the first aspect, the setting parameters include a switch protection mode, a functional logic configuration, a fixed value configuration parameter, and three remote control information;

[0014] The functional logic configuration includes protection type and function pressure plate activation and deactivation status;

[0015] The fixed value configuration parameters include CT ratio configuration, PT ratio configuration, current fixed value, voltage fixed value and timing fixed value.

[0016] In a possible implementation manner of the first aspect, the action parameter includes a fault response action record of the distribution automation switch when a line or equipment fault occurs within a period of time.

[0017] In a possible implementation of the first aspect, the distribution automation switch operating condition analysis method further includes:

[0018] If the parameters in the actual action sequence table do not match the parameters in the theoretical action sequence table, the distribution automation switch has a defect, and the action parameters of the distribution automation switch are sent to the information receiving terminal of the operation and maintenance personnel.

[0019] A second aspect of an embodiment of the present application provides a distribution automation switch operating condition analysis device, comprising:

[0020] A parameter acquisition module is used to obtain the setting parameters of the distribution automation switch from a remote data acquisition device;

[0021] A theoretical timing generation module, configured to generate a theoretical action timing table of the distribution automation switch according to the setting parameters;

[0022] The parameter acquisition module is further configured to acquire the operation parameters of the distribution automation switch from the remote data acquisition device when the operation record of the distribution automation switch changes;

[0023] An actual timing generation module, configured to generate an actual action timing table of the distribution automation switch according to the action parameters;

[0024] The working condition determination module is used to determine that the working condition of the distribution automation switch is good if the parameters in the actual action timing table correspond one-to-one with the parameters in the theoretical action timing table.

[0025] In a possible implementation of the second aspect, the remote data acquisition device is installed in a control box of the distribution automation switch, and the remote data acquisition device is connected to the distribution automation switch via Ethernet.

[0026] In a possible implementation of the second aspect, the setting parameters include a switch protection mode, a functional logic configuration, a fixed value configuration parameter, and three remote control information;

[0027] The functional logic configuration includes protection type and function pressure plate activation and deactivation status;

[0028] The fixed value configuration parameters include CT ratio configuration, PT ratio configuration, current fixed value, voltage fixed value and timing fixed value.

[0029] In a possible implementation manner of the second aspect, the action parameter includes a fault response action record of the distribution automation switch when a line or equipment fault occurs within a period of time.

[0030] In a possible implementation of the second aspect, the operating condition determination module is further configured to:

[0031] If the parameters in the actual action sequence table do not match the parameters in the theoretical action sequence table, it is determined that the distribution automation switch has a defect, and the action parameters of the distribution automation switch are sent to the information receiving terminal of the operation and maintenance personnel.

[0032] Compared to existing technologies, the present invention provides a method and device for analyzing the operating conditions of distribution automation switches. These methods obtain the operating parameters of distribution automation switches in real time from a remote data acquisition device, collect accident event records generated when the distribution automation switches operate from the operating parameters, and generate corresponding actual operating time sequences. By combining the theoretical operating time sequence with the comparative analysis of the various parameters of the two time sequences, the correctness of the distribution automation switch operation can be quickly analyzed in real time, providing timely guidance for emergency repairs and identifying defects and hidden dangers in the distribution automation switches, thereby improving the reliability of the power grid. Furthermore, this method helps power grid companies save on human analysis costs for operations and maintenance, improving economic benefits and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a flow chart of a method for analyzing the operating conditions of a distribution automation switch provided by one embodiment of the present invention;

[0034] Figure 2 The present invention provides a schematic structural diagram of a distribution automation switch operating condition analysis device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] Please refer to Figure 1 , an embodiment of the present invention provides a method for analyzing the operating conditions of a distribution automation switch, comprising:

[0037] S10. Acquire setting parameters of the distribution automation switch from a remote data acquisition device.

[0038] S11. Generate a theoretical action timing table of the distribution automation switch according to the setting parameters.

[0039] S12. When the action record of the distribution automation switch changes, obtain the action parameters of the distribution automation switch from the remote data acquisition device.

[0040] S13. Generate an actual action sequence table of the distribution automation switch according to the action parameters.

[0041] S14. If the parameters in the actual action sequence table correspond one to one with the parameters in the theoretical action sequence table, the distribution automation switch is in good working condition.

[0042] Before implementing the distribution automation switch operating condition analysis method provided in the embodiments of the present invention, a remote data acquisition device must be installed on the distribution automation switch. Preferably, the data acquisition device is installed in the control box of the distribution automation switch and measures approximately 10 cm × 4 cm × 15 cm. The device connects to the distribution automation terminal via an Ethernet port and actively collects the functional logic configuration, fixed value configuration parameters, and remote control information within the distribution automation terminal. The data is then transmitted back to the backend monitoring system software via wireless or optical fiber transmission.

[0043] The method in this embodiment is generally implemented by a background monitoring system, and is generally expressed in the form of background monitoring system software.

[0044] Taking the background software as an example, the background software will create data partitions according to the name of each distribution automation switch connected to the system, and through the data acquisition device, the functional logic configuration, fixed value configuration parameters, and three-remote information of each distribution automation switch collected will be updated in real time and saved in the corresponding data partition of each distribution automation switch in the background monitoring system.

[0045] The background software will generate a theoretical action sequence table for each distribution automation switch based on the collected functional logic configuration and fixed value configuration parameters; when the on-site distribution automation switch is activated due to line or equipment failure, the distribution automation terminal will generate various action records of the switch, and the data acquisition device will collect and upload these data to the background software in real time; the background software will find the theoretical action sequence table of the switch in the corresponding database according to the name of the distribution automation switch, and compare the collected real-time action data of the switch with the action data in the theoretical action sequence table item by item. If all are correct, the output action is correct; if the real-time action data does not match the theoretical action when comparing item by item, the output action is wrong.

[0046] Regardless of whether the output action is correct or not, a corresponding distribution automation switch action correctness analysis report can be generated and archived for future reference.

[0047] Exemplarily, the remote data acquisition device is installed in a control box of the distribution automation switch, and the remote data acquisition device is connected to the distribution automation switch via Ethernet.

[0048] Exemplarily, the setting parameters include switch protection mode, function logic configuration, fixed value configuration parameters and three remote control information;

[0049] The functional logic configuration includes protection type and function pressure plate activation and deactivation status;

[0050] The fixed value configuration parameters include CT ratio configuration, PT ratio configuration, current fixed value, voltage fixed value and timing fixed value.

[0051] Furthermore, protection types can be divided into centralized, intelligent distributed, voltage-current, voltage-time, extreme difference protection, and current type.

[0052] Functional pressure plates can be subdivided into: automation function, closing pressure plates, and opening pressure plates.

[0053] The CT ratios are: 600 / 5, 20 / 1, 100 / 1.

[0054] The PT transformation ratios are: 10 / 0.22kV, 10 / 0.1kV.

[0055] The current constant is divided into: current stage I, current stage II, and zero sequence stage I.

[0056] Voltage set values ​​are divided into: voltage set value, no-voltage set value, and residual voltage set value.

[0057] The timing setting values ​​are divided into: X time, Y time, current stage I time, current stage II time, zero sequence stage I time, and reclosing time.

[0058] Exemplarily, the action parameters include a record of the fault response action of the distribution automation switch when a line or equipment fault occurs within a period of time.

[0059] Exemplarily, the distribution automation switch operating condition analysis method further includes:

[0060] If the parameters in the actual action sequence table do not match the parameters in the theoretical action sequence table, the distribution automation switch has a defect, and the action parameters of the distribution automation switch are sent to the information receiving terminal of the operation and maintenance personnel.

[0061] It should be noted that different protection modes have different set values. The protection mode of the distribution automation switch on the line must be determined according to the setting parameters before the corresponding theoretical action sequence table can be selected for comparison with the actual sequence table.

[0062] Therefore, for the distribution automation switches of an entire line, the comparison order is generally as follows:

[0063] (1) Confirm the current protection function setting mode of the distribution automation switch on the line;

[0064] (2) Generate a theoretical action sequence table for all distribution automation switches on the line;

[0065] (3) Based on the collected data, generate the actual action sequence table of all distribution automation switches on the line;

[0066] (4) Compare the theoretical action timing table with the actual action timing table one by one to confirm whether the action is correct.

[0067] Compared to existing technologies, the present invention provides a method for analyzing the operating conditions of distribution automation switches. This method obtains the operating parameters of distribution automation switches in real time from a remote data acquisition device, collects accident event records generated when the distribution automation switches operate from the operating parameters, and generates a corresponding actual operating sequence table. By combining the theoretical operating sequence table with the parameters of the two sequence tables and comparing and analyzing the various parameters, the correctness of the distribution automation switch operation can be quickly analyzed in real time. This allows for timely guidance on emergency repairs and the identification of defects and hidden dangers in the distribution automation switches, thereby improving the reliability of the power grid. Furthermore, this method helps power grid companies save on human analysis costs for operations and maintenance, improving economic benefits and work efficiency.

[0068] An embodiment of the present application provides a distribution automation switch operating condition analysis device, including a parameter acquisition module 20, a theoretical time sequence generation module 21, an actual time sequence generation module 22 and an operating condition determination module 23.

[0069] The parameter acquisition module 20 is used to obtain the setting parameters of the distribution automation switch from a remote data acquisition device.

[0070] The theoretical timing generation module 21 is used to generate a theoretical action timing table of the distribution automation switch according to the setting parameters.

[0071] The parameter acquisition module 20 is further configured to acquire the operation parameters of the distribution automation switch from the remote data acquisition device when the operation record of the distribution automation switch changes.

[0072] The actual timing generation module 22 is used to generate an actual action timing table of the distribution automation switch according to the action parameters.

[0073] The working condition determination module 23 is configured to determine that the working condition of the distribution automation switch is good if the parameters in the actual action sequence table correspond one-to-one with the parameters in the theoretical action sequence table.

[0074] Exemplarily, the remote data acquisition device is installed in a control box of the distribution automation switch, and the remote data acquisition device is connected to the distribution automation switch via Ethernet.

[0075] Exemplarily, the setting parameters include switch protection mode, function logic configuration, fixed value configuration parameters and three remote control information;

[0076] The functional logic configuration includes protection type and function pressure plate activation and deactivation status;

[0077] The fixed value configuration parameters include CT ratio configuration, PT ratio configuration, current fixed value, voltage fixed value and timing fixed value.

[0078] Exemplarily, the action parameters include a record of the fault response action of the distribution automation switch when a line or equipment fault occurs within a period of time.

[0079] Exemplarily, the operating condition determination module 23 is further configured to:

[0080] If the parameters in the actual action sequence table do not match the parameters in the theoretical action sequence table, it is determined that the distribution automation switch has a defect, and the action parameters of the distribution automation switch are sent to the information receiving terminal of the operation and maintenance personnel.

[0081] Compared to existing technologies, the present invention provides a distribution automation switch operating condition analysis device that acquires the operating parameters of the distribution automation switch in real time from a remote data acquisition device. Accident event records generated during the operation of the distribution automation switch are collected from the operating parameters and a corresponding actual operation sequence table is generated. By combining the theoretical operation sequence table with the parameters of the two sequence tables and comparing and analyzing them, the correctness of the distribution automation switch operation can be quickly analyzed in real time, providing timely guidance for emergency repairs and identifying defects and hidden dangers in the distribution automation switch, thereby improving the power supply reliability of the power grid. Furthermore, this method helps power grid companies save on human analysis costs for operation and maintenance, improving economic benefits and work efficiency.

[0082] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method embodiment and will not be described again here.

[0083] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for analyzing the operating conditions of a distribution automation switch, characterized in that: Applicable to background monitoring systems, including: Obtaining the setting parameters of each distribution automation switch from each remote data acquisition device; For each distribution automation switch, generating a theoretical action timing table of the distribution automation switch according to the setting parameters; When the action record of the distribution automation switch changes, the action parameters of the distribution automation switch are obtained from the remote data acquisition device; wherein the action parameters include the fault response action record of the distribution automation switch when a line or equipment fault occurs within a period of time; Generating an actual action sequence table of the distribution automation switch according to the action parameters; If the parameters in the actual action sequence table correspond to the parameters in the theoretical action sequence table, the distribution automation switch is in good working condition; If the parameters in the actual action sequence table do not match the parameters in the theoretical action sequence table, the distribution automation switch has a defect, and the action parameters of the distribution automation switch are sent to the information receiving terminal of the operation and maintenance personnel; The remote data acquisition device is installed in the control box of the distribution automation switch, and the remote data acquisition device is connected to the distribution automation switch via Ethernet.

2. The method for analyzing the operating condition of a distribution automation switch according to claim 1, wherein: The setting parameters include switch protection mode, function logic configuration, fixed value configuration parameters and three remote control information; The functional logic configuration includes protection type and function pressure plate activation and deactivation status; The fixed value configuration parameters include CT ratio configuration, PT ratio configuration, current fixed value, voltage fixed value and timing fixed value.

3. A distribution automation switch operating condition analysis device, characterized in that: Applicable to background monitoring systems, including: A parameter acquisition module is used to obtain the setting parameters of each distribution automation switch from each remote data acquisition device; A theoretical timing generation module, configured to generate a theoretical action timing table of each distribution automation switch according to the setting parameters; The parameter acquisition module is further configured to acquire the action parameters of the distribution automation switch from the remote data acquisition device when the action record of the distribution automation switch changes; wherein the action parameters include the fault response action record of the distribution automation switch when a line or equipment fault occurs within a period of time; An actual timing generation module, configured to generate an actual action timing table of the distribution automation switch according to the action parameters; a working condition determination module, configured to determine that the working condition of the distribution automation switch is good if the parameters in the actual action sequence table correspond one-to-one with the parameters in the theoretical action sequence table; and to determine that the distribution automation switch is defective if the parameters in the actual action sequence table do not match the parameters in the theoretical action sequence table, and to send the action parameters of the distribution automation switch to an information receiving terminal of an operation and maintenance personnel; The remote data acquisition device is installed in the control box of the distribution automation switch, and the remote data acquisition device is connected to the distribution automation switch via Ethernet.

4. The distribution automation switch operating condition analysis device according to claim 3, characterized in that: The setting parameters include switch protection mode, function logic configuration, fixed value configuration parameters and three remote control information; The functional logic configuration includes protection type and function pressure plate activation and deactivation status; The fixed value configuration parameters include CT ratio configuration, PT ratio configuration, current fixed value, voltage fixed value and timing fixed value.

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