A comprehensive inspection method and system for secondary equipment based on monitoring background

Abstract

A comprehensive inspection method and system for secondary devices based on a monitoring background, the method comprising: using secondary device information and a secondary device template library, adopting a forward maximum matching algorithm, classifying the type of secondary devices and the analog quantity and signal quantity of the secondary devices; according to the inspection content, the monitoring host determines the type, analog quantity and / or signal quantity type of the secondary device to be inspected; collects the analog quantity and / or signal quantity that conforms to the analog quantity and / or signal quantity type in the secondary device to be inspected; and obtains the inspection result through inspection module processing. The present invention first determines the type of secondary devices involved in the inspection according to the inspection content of the secondary devices, so as to narrow the inspection scope, and then collects the analog quantity and signal quantity corresponding to each secondary device within the determined inspection scope according to the inspection content, so that the monitoring host only needs to collect the corresponding information according to different inspection contents, thereby reducing the amount of information processing, speeding up the inspection process, and facilitating the simultaneous inspection of multiple devices.

Description

Technical Field

[0001] The present invention belongs to the technical field of in-station inspection of intelligent substations, and in particular relates to a comprehensive inspection method and system for secondary equipment based on a monitoring background. Background Art

[0002] With the rapid development of smart grid technology, the digitization and intelligence of power grid secondary equipment has been accelerated. The importance of secondary equipment in power system has become more prominent and has become an important factor affecting the reliable supply of electricity. Secondary equipment status monitoring is the basis for status evaluation and status maintenance. Therefore, it is very necessary to study the status monitoring technology of secondary equipment and fully understand its operating status in real time.

[0003] In the prior art, the intelligent inspection of secondary equipment includes: obtaining the operating data of relay protection equipment and fault recorders, and conducting different types of inspections on the operating data based on benchmark values ​​and inspection strategies; adding special maintenance items for key relay protection and safety devices; building an intelligent inspection and analysis system for primary and secondary equipment, and using intelligent inspection analysis functions and methods to achieve centralized inspection and analysis, online verification, and active alarms for the protection operating values ​​and disconnectors of the substations under their jurisdiction by the relay protection team and the operation and maintenance team; automatically checking whether the operating status of the primary and secondary equipment of the smart substation is consistent by setting up a rule template library corresponding to the primary and secondary equipment states to meet the requirements of the power grid operation mode, and preventing the misoperation or refusal of protection caused by the inconsistent operating status of the primary and secondary equipment due to operator misoperation and device program upgrades, and generating an inspection report based on the inspection content.

[0004] However, inspections in the prior art are mostly carried out on protection-related secondary equipment, and there is a lack of inspections on measurement and control, telecontrol gateways, timing devices, and switches; inspections are mostly carried out to make rule judgments on single data, and there is a lack of fusion of multi-terminal data for analysis and diagnosis to draw abnormal conclusions, such as the location of abnormal equipment and abnormal networks; inspections all have configuration functions, but the configuration of the inspection system within the station can only be modified locally and cannot be corrected through remote operation and maintenance; inspections are based on self-collected data, but there is a lack of comparison with data collected by other systems, and it is impossible to verify its own data. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides a comprehensive inspection method and system for secondary equipment based on the monitoring background, which also includes the in-station measurement and control, remote control gateway, switches, and timing devices in the inspection scope, and analyzes and judges multi-terminal data; adds functions to support remote operation and maintenance inspection configuration and inspection strategy; adds cross-sectional data comparison with the remote control gateway to improve the accuracy of its own data.

[0006] The present invention adopts the following technical solution.

[0007] On the one hand, the present invention proposes a comprehensive inspection method for secondary devices based on a monitoring background, comprising:

[0008] Step 1, collect secondary equipment information;

[0009] Step 2, using the secondary device information and the secondary device template library, adopting the forward maximum matching algorithm, classifying the secondary device type and the analog quantity and signal quantity of the secondary device;

[0010] Step 3: According to the inspection content, the monitoring host determines the type, analog quantity and / or signal quantity type of the secondary device to be inspected; collects the analog quantity and / or signal quantity that meets the analog quantity and / or signal quantity type in the secondary device to be inspected;

[0011] Step 4: Input the collected analog quantity and / or signal quantity into the patrol module for processing and analysis to obtain the patrol result.

[0012] Preferably, in step 1, the monitoring host obtains secondary device information from the SCD model file, and the secondary device information includes: secondary device model, secondary device Chinese name and secondary device IEDNAME.

[0013] Preferably, step 2 comprises:

[0014] Step 2.1, the monitoring host has a secondary device template library, which includes: secondary device IEDNAME, template rules for the corresponding relationship between secondary device types, secondary device models, secondary device Chinese names, the relationship between the reference mark 61850reference and the analog quantity or signal quantity of the secondary device, the relationship between the analog quantity name and the analog quantity type, and the relationship between the signal quantity name and the signal quantity type;

[0015] Step 2.2, based on the secondary device information, the monitoring host uses a forward maximum matching algorithm to search in the secondary device template library to determine the type of the secondary device;

[0016] Step 2.3, after determining the type of the secondary device, the monitoring host uses a forward maximum matching algorithm to search in the secondary device template library to determine the type of the analog quantity and / or signal quantity according to the name of the analog quantity and / or signal quantity or according to the reference mark 61850reference.

[0017] Preferably, when performing forward maximum matching according to the names of analog quantities and / or signal quantities, a complete matching principle is adopted;

[0018] When performing a forward maximum match based on the reference flag 61850reference, the unique matching principle is adopted.

[0019] Preferably, step 3 comprises:

[0020] Step 3.1, inspection of the time status;

[0021] Step 3.2: Inspection of network status.

[0022] Preferably, in step 3.1, patrolling the time synchronization status includes:

[0023] Step 3.1.1, when conducting a time synchronization inspection, the types of secondary equipment to be inspected determined by the monitoring host include protection devices, measurement and control devices, and timing devices;

[0024] Step 3.1.2, collect the signal quantity of the secondary equipment to be inspected, including: the abnormal timing signal of the protection device, the abnormal timing signal of the measurement and control device and the signal source status of the timing device; collect the analog quantity of the secondary equipment to be inspected, including: the clock deviation value of the monitored equipment in the timing device and the IP of the monitored equipment.

[0025] Preferably, in step 3.2, patrolling the network status includes:

[0026] Step 3.2.1, when inspecting the network status, the monitoring host determines that the types of secondary devices to be inspected include telecontrol gateways, measurement and control devices, protection devices, and switches;

[0027] Step 3.2.2, collect the signal quantity of the secondary equipment to be inspected, including: the communication status between the measurement and control device and the monitoring host, the communication status between the protection device and the monitoring host, the communication status between the measurement and control device and the remote control gateway, the communication status between the protection device and the remote control gateway, the port status of the switch connected to the measurement and control device, the port status of the switch connected to the protection device, the port status of the switch connected to the monitoring host, and the port status of the switch connected to the remote control gateway.

[0028] Preferably, in step 4, during the patrol of the time synchronization status, the patrol module processing and analysis includes:

[0029] Step 4.1.1, obtain the signal source status of the timing device; if all signal source statuses have alarms, the clock source is determined to be abnormal, otherwise the clock source is determined to be normal;

[0030] Step 4.1.2, obtain the timing signal status of the protection device and the measurement and control device, and judge it. If the timing signal status is abnormal, the timing status of the protection or measurement and control device is abnormal. Finally, judge by obtaining the clock deviation value between the timing device and the protection device or the measurement and control device. When the clock deviation value is greater than 3 seconds, it is considered that the protection device or the measurement and control device has a timing deviation.

[0031] Preferably, in step 4, in the patrol of the network status, the patrol module processing and analysis includes:

[0032] Step 4.2.1, when the communication status between the monitoring host and any protection device or measurement and control device is disconnected, and the communication status between the remote control gateway and the protection device or measurement and control device is also disconnected, if the status of the port connecting the switch to the protection device or measurement and control device is abnormal, the switch is judged to be abnormal, otherwise, the protection device or measurement and control device is judged to be abnormal;

[0033] Step 4.2.2, when the communication status between the monitoring host and any protection device or measurement and control device is disconnected, and the communication status between the remote control gateway and the protection device or measurement and control device is connected, if the status of the port connected to the monitoring host is abnormal, the switch is judged to be abnormal, otherwise, the switch is judged to be normal; when the switch is normal, if the communication status between the monitoring host and all protection devices and measurement and control devices is disconnected, the monitoring host is judged to be abnormal, otherwise, the switch cascade is judged to be abnormal;

[0034] Step 4.2.3, when the communication status between the remote control gateway and any protection device or measurement and control device is disconnected, and the communication status between the monitoring host and the protection device or measurement and control device is connected, if the status of the port connected to the switch and the remote control gateway is abnormal, the switch is judged to be abnormal, otherwise, the switch is judged to be normal; when the switch is normal, if the communication status of all protection devices and measurement and control devices of the remote control gateway is disconnected, the remote control gateway is judged to be abnormal, otherwise, the switch cascade is judged to be abnormal.

[0035] On the other hand, the present invention also proposes a comprehensive inspection system for secondary devices based on a monitoring background, which is used to implement the steps of a comprehensive inspection method for secondary devices based on a monitoring background.

[0036] The beneficial effects of the present invention are as follows:

[0037] 1. The patrol alarm method proposed in the present invention has a wider scope of application. It can not only realize patrol alarms for protection equipment, but also patrol alarms for measurement and control devices, telecontrol gateways, switches, and timing equipment.

[0038] 2. The method proposed in the present invention first determines the type of secondary equipment involved in the inspection according to the inspection content of the secondary equipment, so as to narrow the inspection scope, and then collects the analog quantity and signal quantity corresponding to each secondary equipment within the determined inspection scope according to the inspection content, so that the monitoring host only needs to collect the corresponding information according to different inspection contents, without collecting all the information, thereby reducing the amount of information processing, speeding up the inspection process, and facilitating the simultaneous inspection of multiple devices.

[0039] 3. The inspection results provide a basis for multi-terminal data fusion. Through the fusion analysis of multi-terminal data, the inspection conclusions can be drawn, and abnormal equipment can be inferred from the inspection conclusions.

[0040] 4. The local patrol configuration is realized as a configuration file in XML format, which can be uploaded and downloaded through the 61850MMS file service, making it convenient for remote online maintenance of the patrol configuration.

[0041] 5. The telecontrol gateway generates the RCDRT telecontrol section file according to the RCD telecontrol configuration description file. After the monitoring host obtains it through the 61850MMS file service, it compares it with its own collected data to verify the correctness of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A network diagram of a comprehensive inspection and alarm method for secondary equipment based on a monitoring background applicable to a smart substation in an embodiment of the present invention;

[0043] Figure 1 The reference numerals in the figures are described as follows:

[0044] 11-workstation, 12-application server, 13-front-end server;

[0045] 21-operation and maintenance gateway / substation, 22-monitoring host, 23-telecontrol gateway, 24-timing device, 25-A network switch, 26-B network switch, 27-first measurement and control device, 28-second measurement and control device, 29-first protection device, 30-second protection device, 31-redundant measurement and control device, 32-other devices;

[0046] Figure 2 It is a logic diagram of the time-synchronization state data analysis of the comprehensive patrol alarm method based on the secondary equipment of the monitoring background applicable to the smart substation in the embodiment of the present invention;

[0047] Figure 3 The present invention is a schematic diagram of the composition of a comprehensive inspection system for secondary equipment based on a monitoring background applicable to a smart substation in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only embodiments of a part of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0049] On the one hand, the present invention proposes a comprehensive inspection method for secondary devices based on a monitoring background, comprising:

[0050] Step 1: Collect secondary equipment information.

[0051] The monitoring host obtains the secondary device model, the secondary device Chinese name, and the secondary device IEDNAME from the SCD model file (substation configuration description file Substation ConfigurationDescription).

[0052] In the embodiment of the present invention, Figure 1 As shown, the smart substation includes: an operation and maintenance main station and an operation and maintenance substation on the substation side, and the operation and maintenance main station and the operation and maintenance substation communicate through GSP; wherein, the operation and maintenance main station side includes: a workstation 11, an application server 12, and a front-end server 13. The substation side includes: an operation and maintenance gateway / substation 21, a monitoring host 22, a telecontrol gateway 23, a clock device 24, an A network switch 25, a B network switch 26, a first measurement and control device 27, a second measurement and control device 28, a first protection device 29, a second protection device 30, a redundant measurement and control device 31, and other devices 32,

[0053] Among them, the monitoring host supports MMS file service call and download configuration files. The relative path is

[0054] / patrolcfg / , the file name is patrolcfg.xml; the operation and maintenance main station can call the configuration file of the monitoring background through the operation and maintenance sub-station, and after remote modification, it can be downloaded to the monitoring.

[0055] The in-station operation and maintenance gateway / substation communicates with the monitoring host via IEC61850MMS. The monitoring host, telecontrol gateway, first measurement and control device, second measurement and control device, first protection device, second protection device, and timing device all communicate via switches via IEC61850MMS. The monitoring host collects information of different types of secondary devices through protocols, where the types of secondary devices include but are not limited to: measurement and control devices, protection devices, switches, timing devices, and telecontrol gateways. The monitoring host and each secondary device in the smart substation are interconnected, and the information provided by each secondary device, including analog quantities or signal quantities, is collected by the monitoring host through protocol communication.

[0056] The patrol alarm method proposed by the present invention has a wider application range, and can not only realize patrol alarms for protection equipment, but also patrol alarms for measurement and control devices, telecontrol gateways, switches, and timing equipment.

[0057] Step 2: Using the secondary device information and the secondary device template library, a forward maximum matching algorithm is used to classify the secondary device type and the analog quantity and signal quantity of the secondary device.

[0058] Wherein, the type of the secondary device is determined based on the secondary device template library; and the analog quantity and the signal quantity in the secondary device information are classified based on the determined type of the secondary device.

[0059] Specifically, step 2 includes:

[0060] Step 2.1, the monitoring host has a secondary device template library, which includes: secondary device IEDNAME, template rules for the corresponding relationship between secondary device types, secondary device models, secondary device Chinese names, the relationship between the reference mark 61850reference and the analog quantity or signal quantity of the secondary device, the relationship between the analog quantity name and the analog quantity type, and the relationship between the signal quantity name and the signal quantity type.

[0061] Further, the secondary equipment template library used in the embodiment of the present invention includes: the secondary equipment IEDNAME generated according to the "DL / T 1873-2018 Technical Specification for Smart Substation System Configuration Description (SCD) File"

[0062] The template rules for the correspondence between the secondary equipment types also include the template rules for the correspondence between the commonly used secondary equipment models, the Chinese names of secondary equipment and the secondary equipment types; it includes the relationship between the 61850reference and the analog quantity / semaphore of the secondary equipment derived from the definition of the secondary equipment IEC61850 model (such as logical device name, logical node name, data object name, etc.) according to the secondary equipment specification; it also includes the relationship between the analog quantity types corresponding to the commonly used analog quantity names, and the relationship between the semaphore types corresponding to the commonly used semaphore names.

[0063] Step 2.2, according to the secondary device model, the Chinese name of the secondary device, and the IEDNAME of the secondary device, the monitoring host uses a forward maximum matching algorithm to search in the secondary device template library to determine the type of the secondary device;

[0064] Furthermore, if the method of automatically determining the secondary device type fails, it is necessary to manually configure the type of the secondary device and store the new secondary device model and secondary device description in the secondary device template library to update the secondary device template library.

[0065] Step 2.3, after determining the type of secondary equipment, the monitoring host uses the forward maximum matching algorithm to search in the secondary equipment template library to determine the type of analog quantity and signal quantity according to the Chinese name of the analog quantity and signal quantity of the secondary equipment, or according to the reference mark 61850reference in the SCD model file; among them, determining the type according to the Chinese name of the analog quantity and signal quantity is to determine the type through the commonly used Chinese name and the complete matching principle; determining the type according to the reference mark 61850reference is to define the IEC61850 model part of the device according to the device specification, such as the logical device name, logical node name, and data object name. Clearly define, so that the type can be determined by the unique 61850reference, that is, the unique matching principle; when searching, if 61850reference is used to search, due to the uniqueness of 61850reference, only a unique result will appear; if the Chinese name complete matching method is used to search, if there are results in both analog and semaphore data, since they belong to different categories of data, the types will not be the same, and there will be no impact on the inspection. If multiple results appear in the analog or semaphore, determine whether multiple results are needed based on the inspection content served by the type. If necessary, the search is successful.

[0066] Furthermore, if the method of automatically determining the types of analog quantities and signal quantities fails, it is necessary to manually configure the types of analog quantities and signal quantities and store them in the secondary device template library to update the secondary device template library.

[0067] It is worth noting that in this application, the reference mark used for analog quantity and signal quantity in the secondary device model is 61850reference, which is a non-restrictive and preferred choice. Those skilled in the art can use different reference marks according to the actual application needs of the project.

[0068] Specifically, for the timing status of the patrol content, it is necessary to find and classify the timing signal status of the measurement and control device. According to the definition of the model in "QGDW 10427-2017 Technical Specifications for Substation Measurement and Control Devices", determine which signal is the timing signal status and classify this signal as the timing signal status.

[0069] In an embodiment of the present invention, the telecontrol gateway generates a remote real-time section file (RCDRT) according to a remote configuration description file (RCD), and the file includes telemetry and telesignaling information forwarded upward by the telecontrol; according to the 61850Reference of each telemetry and telesignaling in the RCDRT file, the corresponding analog quantity and signal quantity are located in the monitoring background, and then the data values ​​are compared to ensure the correctness of the basic data, thereby realizing the basic data comparison function.

[0070] Step 3: Based on the inspection content, the monitoring host determines the type, analog quantity and / or signal quantity type of the secondary device to be inspected; and collects analog quantities and / or signal quantities in the secondary device to be inspected that meet the analog quantity and / or signal quantity type.

[0071] Specifically, the inspection content includes but is not limited to: inspection of time status and inspection of network status.

[0072] Specifically, the same type of secondary equipment includes multiple secondary equipment. In the embodiment of the present invention, the measurement and control device includes a first measurement and control device and a second measurement and control device, and the protection device includes a first protection device and a second protection device.

[0073] In the present application, based on the classification results of the analog quantity and signal quantity of the secondary equipment in step 2, the monitoring host only needs to collect corresponding information according to different patrol contents, without the need to collect all information, thereby reducing the amount of information processing, speeding up the patrol process, and facilitating simultaneous patrols of multiple devices.

[0074] Specifically, step 3 includes:

[0075] Step 3.1, inspect the time synchronization status, as follows:

[0076] Step 3.1.1, when conducting a time synchronization inspection, the types of secondary equipment to be inspected determined by the monitoring host include protection devices, measurement and control devices, and timing devices;

[0077] Step 3.1.2, collect the signal quantity of the secondary equipment to be inspected, including: the abnormal timing signal of the protection device, the abnormal timing signal of the measurement and control device and the signal source status of the timing device; collect the analog quantity of the secondary equipment to be inspected, including: the clock deviation value of the monitored equipment in the timing device and the IP of the monitored equipment.

[0078] Step 3.2, patrol the network status, as follows:

[0079] Step 3.2.1, when inspecting the network status, the monitoring host determines that the types of secondary devices to be inspected include telecontrol gateways, measurement and control devices, protection devices, and switches;

[0080] Specifically, when the network status is inspected, the inspection object is the communication network. Figure 1 It can be seen that the secondary equipment interconnected with the communication network includes: monitoring host, telecontrol gateway, measurement and control device, protection device and switch.

[0081] Step 3.2.2, collect the signal quantity of the secondary equipment to be inspected, including: the communication status between the measurement and control device and the monitoring host, the communication status between the protection device and the monitoring host, the communication status between the measurement and control device and the telecontrol gateway, the communication status between the protection device and the telecontrol gateway, the port status between the switch and the measurement and control device, the port status between the switch and the protection device, the port status between the switch and the monitoring host, and the port status between the switch and the telecontrol gateway;

[0082] Specifically, the connection network ports between the measurement and control device, protection device and switch, and the connection ports of the cascaded switches need to be parsed through the SCD in the station. The subnetwok information segment contains the connection relationship between the switch and the protection device, the measurement and control device, the switch and the monitoring background, the switch and the remote control gateway, and the switch.

[0083] Step 4: compile the inspection results into an inspection report, which supports IEC61850MMS file service access.

[0084] The inspection results provide a basis for multi-terminal data fusion. Through the fusion analysis of multi-terminal data, inspection conclusions can be drawn, and abnormal equipment can be inferred from the inspection conclusions.

[0085] In step 4, during the inspection of the time status, if Figure 2 As shown, the patrol module processing and analysis includes:

[0086] Step 4.1.1, the logic of timing status data analysis is as follows: obtain the signal source status of the timing device; if all signal source statuses have alarms, the clock source is determined to be abnormal, otherwise the clock source is determined to be normal.

[0087] Step 4.1.2, obtain the timing signal status of the protection device and the measurement and control device, and judge it. If the timing signal status is abnormal, the timing status of the protection or measurement and control device is abnormal.

[0088] Step 4.1.3, make a judgment by obtaining the clock deviation value between the timing device and the protection device or the measurement and control device. When the clock deviation value is greater than 3 seconds, it is considered that the protection device or the measurement and control device has a timing deviation.

[0089] Among them, the signal source of the timing device includes but is not limited to: BeiDou (BD) signal source, GPS signal source; the signal source status of the timing device is automatically identified and acquired according to the model definition of the external time source signal status in the "Q / GDW 11539-2016 Technical Specifications for Time Synchronization and Monitoring of Power Systems", such as HostRef1Alarm represents the signal source status of the first external time source BD.

[0090] Among them, the clock deviation value between the timing device and the protection device or the measurement and control device is automatically identified and obtained according to the model definition in the clock equipment monitoring information supplementary table in the "Q / GDW11539-2016 Technical Specifications for Time Synchronization and Monitoring of Power Systems", such as obtaining the IP of the monitored device through the DevIP defined therein, thereby locating which device is being monitored, and obtaining the clock deviation value of the monitored device through the DevTimeDev defined therein.

[0091] The method for finding the signal source status and clock deviation value can be used for type allocation based on 61850reference mentioned in step 2.

[0092] In step 4, during the inspection of the network status, the monitoring host performs a traversal inspection of each secondary device determined, and the inspection module processing and analysis includes:

[0093] Step 4.2.1, when the communication status between the monitoring host and any protection device or measurement and control device is disconnected, and the communication status between the remote control gateway and the protection device or measurement and control device is also disconnected, if the status of the port connecting the switch to the protection device or measurement and control device is abnormal, the switch is judged to be abnormal, otherwise, the protection device or measurement and control device is judged to be abnormal;

[0094] Step 4.2.2, when the communication status between the monitoring host and any protection device or measurement and control device is disconnected, and the communication status between the remote control gateway and the protection device or measurement and control device is connected, if the status of the port connected to the monitoring host is abnormal, the switch is judged to be abnormal, otherwise, the switch is judged to be normal; when the switch is normal, if the communication status between the monitoring host and all protection devices and measurement and control devices is disconnected, the monitoring host is judged to be abnormal, otherwise, the switch cascade is judged to be abnormal;

[0095] Step 4.2.3, when the communication status between the remote control gateway and any protection device or measurement and control device is disconnected, and the communication status between the monitoring host and the protection device or measurement and control device is connected, if the status of the port connected to the switch and the remote control gateway is abnormal, the switch is judged to be abnormal, otherwise, the switch is judged to be normal; when the switch is normal, if the communication status of all protection devices and measurement and control devices of the remote control gateway is disconnected, the remote control gateway is judged to be abnormal, otherwise, the switch cascade is judged to be abnormal.

[0096] On the other hand, the present invention also proposes a comprehensive inspection system for secondary devices based on a monitoring background, which is used to implement the steps of a comprehensive inspection method for secondary devices based on a monitoring background.

[0097] Figure 3 FIG. 1 is a schematic diagram of the composition of a comprehensive inspection system for secondary equipment based on a monitoring background applicable to a smart substation in an embodiment of the present invention. Figure 3 As shown in the figure, the comprehensive inspection method of secondary equipment based on the monitoring background consists of 5 main modules, namely data collection, data verification, inspection configuration, remote operation and maintenance, and inspection diagnosis. The first 4 modules are all for inspection diagnosis. The inspection items include: device communication, device panel lights, light signs, soft pressure plates, hard pressure plates, protection differential current, fixed value area, time synchronization status, self-test information, temperature and light intensity, and network status.

[0098] The present invention inspects the equipment based on the monitoring background, improves the comprehensiveness of data and the applicability of functions, and can inspect the data that the dispatching operation personnel are more concerned about.

[0099] The present disclosure may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0100] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples of computer-readable storage media (a non-exhaustive list) include: 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), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the foregoing. As used herein, a computer-readable storage medium is not to be interpreted as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0101] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0102] The computer program instructions for performing the operation of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. Computer-readable program instructions may be executed completely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or completely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via 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., using an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be personalized by utilizing the state information of the computer-readable program instructions, and the electronic circuit may execute the computer-readable program instructions, thereby realizing various aspects of the present disclosure.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A comprehensive inspection method for secondary equipment based on monitoring background, characterized in that: The method comprises: Step 1, collecting secondary equipment information; wherein the monitoring host obtains the secondary equipment information from the SCD model file, and the secondary equipment information includes: secondary equipment model, secondary equipment Chinese name and secondary equipment IEDNAME; Step 2, using the secondary device information and the secondary device template library, adopting the forward maximum matching algorithm, classifying the secondary device type and the analog quantity and signal quantity of the secondary device; Step 2 includes: Step 2.1, the monitoring host has a secondary device template library, which includes: secondary device IEDNAME, template rules for the correspondence between secondary device types, template rules for the correspondence between secondary device models, Chinese names of secondary devices and secondary device types, the relationship between the reference mark 61850reference and the analog quantity or signal quantity of the secondary device, the relationship between the analog quantity name and the analog quantity type, and the relationship between the signal quantity name and the signal quantity type; Step 2.2, based on the secondary device information, the monitoring host uses a forward maximum matching algorithm to search in the secondary device template library to determine the type of the secondary device; Step 2.3, after determining the type of the secondary device, the monitoring host uses a forward maximum matching algorithm to search in the secondary device template library to determine the type of the analog quantity and / or the signal quantity according to the name of the analog quantity and / or the signal quantity, or according to the reference mark 61850reference; Step 3: According to the inspection content, the monitoring host determines the type, analog quantity type and / or signal quantity type of the secondary device to be inspected; collects analog quantities and / or signal quantities that meet the analog quantity type and / or signal quantity type in the secondary device to be inspected; Step 4: Input the collected analog quantity and / or signal quantity into the patrol module for processing and analysis to obtain the patrol result.

2. The comprehensive inspection method of secondary equipment based on monitoring background according to claim 1 is characterized in that: When performing forward maximum matching based on the name of the analog quantity and / or the name of the signal quantity, the complete matching principle is adopted; When performing a forward maximum match based on the reference flag 61850reference, the unique matching principle is adopted.

3. The comprehensive inspection method of secondary equipment based on monitoring background according to claim 1 is characterized in that: Step 3 includes: Step 3.1, inspection of the time status; Step 3.2: Inspection of network status.

4. The comprehensive inspection method of secondary equipment based on monitoring background according to claim 3 is characterized in that: Step 3.1, the inspection of the time synchronization status includes: Step 3.1.1, when conducting a time synchronization inspection, the types of secondary equipment to be inspected determined by the monitoring host include protection devices, measurement and control devices, and timing devices; Step 3.1.2, collect the signal quantity of the secondary equipment to be inspected, including: the abnormal timing signal of the protection device, the abnormal timing signal of the measurement and control device and the signal source status of the timing device; collect the analog quantity of the secondary equipment to be inspected, including: the clock deviation value of the monitored equipment in the timing device and the IP of the monitored equipment.

5. The comprehensive inspection method of secondary equipment based on monitoring background according to claim 3 is characterized in that: Step 3.2, network status inspection includes: Step 3.2.1, when inspecting the network status, the monitoring host determines that the types of secondary devices to be inspected include telecontrol gateways, measurement and control devices, protection devices, and switches; Step 3.2.2, collect the signal quantity of the secondary equipment to be inspected, including: the communication status between the measurement and control device and the monitoring host, the communication status between the protection device and the monitoring host, the communication status between the measurement and control device and the remote control gateway, the communication status between the protection device and the remote control gateway, the port status of the switch connected to the measurement and control device, the port status of the switch connected to the protection device, the port status of the switch connected to the monitoring host, and the port status of the switch connected to the remote control gateway.

6. The comprehensive inspection method of secondary equipment based on monitoring background according to claim 4 is characterized in that: In step 4, during the patrol of the synchronization status, the patrol module processes and analyzes the following: Step 4.1.1, obtain the signal source status of the timing device; if all signal source statuses have alarms, the clock source is determined to be abnormal, otherwise the clock source is determined to be normal; Step 4.1.2, obtain the timing signal status of the protection device and the measurement and control device, and judge it. If the timing signal status is abnormal, the timing status of the protection or measurement and control device is abnormal. Finally, judge by obtaining the clock deviation value between the timing device and the protection device or the measurement and control device. When the clock deviation value is greater than 3 seconds, it is considered that the protection device or the measurement and control device has a timing deviation.

7. The comprehensive inspection method of secondary equipment based on monitoring background according to claim 5 is characterized in that: In step 4, during the inspection of the network status, the inspection module processes and analyzes the following: Step 4.2.1, when the communication status between the monitoring host and any protection device or measurement and control device is disconnected, and the communication status between the remote control gateway and the protection device or measurement and control device is also disconnected, if the status of the port connecting the switch to the protection device or measurement and control device is abnormal, the switch is judged to be abnormal, otherwise, the protection device or measurement and control device is judged to be abnormal; Step 4.2.2, when the communication status between the monitoring host and any protection device or measurement and control device is disconnected, and the communication status between the remote control gateway and the protection device or measurement and control device is connected, if the status of the port connected to the monitoring host is abnormal, the switch is judged to be abnormal, otherwise, the switch is judged to be normal; when the switch is normal, if the communication status between the monitoring host and all protection devices and measurement and control devices is disconnected, the monitoring host is judged to be abnormal, otherwise, the switch cascade is judged to be abnormal; Step 4.2.3, when the communication status between the remote control gateway and any protection device or measurement and control device is disconnected, and the communication status between the monitoring host and the protection device or measurement and control device is connected, if the status of the port connected to the switch and the remote control gateway is abnormal, the switch is judged to be abnormal, otherwise, the switch is judged to be normal; when the switch is normal, if the communication status of all protection devices and measurement and control devices of the remote control gateway is disconnected, the remote control gateway is judged to be abnormal, otherwise, the switch cascade is judged to be abnormal.

8. A comprehensive inspection system for secondary equipment based on monitoring background, characterized in that: The system is used to implement the steps of the method according to any one of claims 1 to 7.

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