Substation secondary test equipment on-site operation and maintenance system and method

Abstract

The application relates to the technical field of substation operation and maintenance, and is a substation secondary test equipment on-site operation and maintenance system and method, which comprises the following steps: a control platform outputs an operation and maintenance command to secondary online detection equipment in a substation in combination with detection items, and receives and analyzes test result data; a cloud server transmits and stores data between the control platform and the secondary online detection equipment; the secondary online detection equipment performs online detection on a measured device of the substation in combination with the operation and maintenance command; a transmission network is connected with the secondary online detection equipment and the measured device respectively, and transmits related data information; and the measured device transmits detection information and autonomous digital message information back to the secondary online detection equipment in combination with information transmitted by the secondary online detection equipment. The application realizes remote full-automatic test on secondary equipment, greatly reduces labor cost, realizes intelligent, digital and remote operation of substation secondary equipment detection, and realizes 24-hour intelligent operation and maintenance of electric power.

Description

Technical Field

[0001] This invention relates to the field of substation operation and maintenance technology, specifically a localized operation and maintenance system and method for substation secondary testing equipment. Background Technology

[0002] The digitalization of the substation industry proceeds from bottom to top, encompassing substations, central control stations, municipal (provincial) inspection companies, provincial companies, and headquarters; and from left to right, it spans the production control area, information management area, and internet area. It relies on systems such as the substation integrated main and auxiliary monitoring system, online intelligent inspection system, central control station monitoring system, and the new generation equipment asset lean management system PMS3.0 to support the digitalization of the substation industry.

[0003] With the intelligent and digital development of substations and the application of 5G technology in the power industry, some remote control technologies are already being used in substation operation and maintenance. However, there are still many problems in the operation and maintenance of secondary power equipment, such as: too many maintenance personnel, high labor costs, multiple technicians need to be on-site for each maintenance operation at each substation, and the workload of existing maintenance technicians is enormous due to the large number of substations; some substations are located in remote mountainous areas, far from the maintenance unit, making maintenance work time-consuming and labor-intensive; emergency detection of sudden events cannot be handled in a timely manner, requiring maintenance personnel to arrive on-site for testing, wasting a lot of time; the current operation and maintenance of secondary equipment involves bringing testing equipment to the test site and having maintenance personnel operate the secondary equipment for testing. Summary of the Invention

[0004] This invention provides a localized operation and maintenance system and method for substation secondary testing equipment, which overcomes the shortcomings of the prior art and effectively solves the problems of high labor costs, large workload, and untimely testing that exist in the existing methods of manual operation and maintenance testing of substations by operation and maintenance personnel.

[0005] One of the technical solutions of the present invention is achieved through the following measures: a localized operation and maintenance system for secondary testing equipment in a substation, comprising a control platform, a cloud server, secondary online testing equipment, a transmission network, and the device under test;

[0006] The control platform acquires the test items, outputs operation and maintenance commands to the secondary online testing equipment in the substation based on the test items, and receives and analyzes the test result data.

[0007] The cloud server connects to both the control platform and the secondary online testing equipment, and performs data transfer and storage between the control platform and the secondary online testing equipment.

[0008] Secondary online testing equipment, in conjunction with operation and maintenance commands, performs online testing on the devices under test in the substation and transmits the test results data to the control platform;

[0009] The transmission network connects the secondary online testing equipment and the device under test, respectively, and transmits relevant data information.

[0010] The device under test, in conjunction with the information sent by the secondary online testing equipment, transmits back testing information and autonomous digital message information to the secondary online testing equipment.

[0011] The following are further optimizations and / or improvements to the above-mentioned technical solution:

[0012] The aforementioned control platform includes:

[0013] The test task template library stores test templates for secondary online device applications, which are generated from on-site test task projects.

[0014] The test report management module organizes the test results data returned from the secondary online equipment tests, forms a standardized test report format for operation and maintenance requirements, and creates a test report library.

[0015] The test data analysis module collects test result data from the receiver and forms a test database. By calling the test result data, it analyzes the test result data and forms horizontal and vertical data analysis results of the device under test.

[0016] The secondary online testing equipment control module sends the test task template to the secondary online testing equipment. It evaluates whether the test and debugging are met by reading the substation status information fed back by the secondary online testing equipment. If not, it prompts the operation and maintenance personnel. If it meets the requirements, it issues an operation and maintenance command and receives the test result data fed back by the secondary online testing equipment.

[0017] The secondary equipment status display module reads information from all secondary equipment in the interval layer in real time and displays the operating status of the secondary equipment.

[0018] The aforementioned transmission network includes a bay layer network and a station control layer network, which respectively transmit data information returned by different devices under test.

[0019] The aforementioned device under test includes a digital protection device, a digital measurement and control device, a merging unit device, and an intelligent terminal device. All of these devices are connected to the transmission network.

[0020] The above also includes a communication encryption unit, which is connected to both the control platform and the cloud server to encrypt the communication data between the control platform and the cloud server.

[0021] The second technical solution of the present invention is achieved through the following measures: a method for the operation and maintenance of a localized operation and maintenance system for secondary testing equipment in substations, comprising:

[0022] The control platform initiates a remote testing program to obtain the operating status of the secondary online testing equipment;

[0023] In response to the normal operation of the secondary online testing equipment, the control platform issues maintenance and repair commands through the cloud server. After receiving the maintenance and repair commands, the secondary online testing equipment automatically calls the automatic testing program in the built-in system.

[0024] The secondary online testing equipment loads the test task template from the operation and maintenance command, and associates the testing equipment task with the corresponding SCD file according to the test task template information. The SCD file is the configuration file for the output configuration of the secondary testing equipment.

[0025] The secondary online testing equipment performs automated testing on digital protection devices, digital measurement and control devices, merging unit devices, and intelligent terminal devices that need to be tested, according to the testing task requirements.

[0026] After the test is completed, the secondary online testing equipment will feed back the test results data to the control platform, and the control platform will generate a test report that meets the operation and maintenance requirements.

[0027] The following are further optimizations and / or improvements to the above-mentioned technical solution:

[0028] The aforementioned secondary online testing equipment performs automated testing on the digital protection devices, digital measurement and control devices, merging unit devices, and intelligent terminal devices required for testing, according to the testing task requirements, including:

[0029] The secondary online testing equipment performs automated testing on the digital protection devices and digital measurement and control devices that need to be tested according to the test task requirements. The SV messages and GOOSE messages sent by the secondary online testing equipment are marked with maintenance tags to distinguish between online operating equipment messages and maintenance equipment test messages.

[0030] The secondary online testing equipment performs automated testing on the merging unit devices and intelligent terminal devices that need to be tested according to the test task requirements. It completes device sampling test, channel remote signaling test, protection logic test, and overall group debugging test. The secondary online testing equipment outputs SV information, sends and receives GOOSE information, and reads protection telemetry and remote signaling information through MMS, thus automating all secondary equipment testing tasks.

[0031] The above also includes preparatory work before operation and maintenance testing, including:

[0032] Apply for a work permit;

[0033] Work arrangements were made for the staff;

[0034] Safety measures are implemented through one-click sequential control. The control platform sends one-click sequential control commands to the one-click sequential control equipment in the substation in accordance with the operation and maintenance requirements to carry out one-click sequential control operations.

[0035] The substation implements safety measures with a single click. The control platform obtains the switch status of primary equipment at the substation site through secondary online devices to perform secondary confirmation of the safety measures. After confirming that there are no errors, operation and maintenance testing is carried out.

[0036] In this invention, the control platform serves as the operation platform for maintenance personnel. These personnel retrieve testing items from the guidance library and issue maintenance commands to the secondary online testing equipment in the substation. The secondary online testing equipment obtains the status information of each primary device from the network and assesses whether testing is feasible. Once the testing conditions are met, the secondary online testing equipment performs a one-click automated closed-loop test according to the testing items. After the test is completed, the test results are uploaded to the operation platform, which generates a standard-compliant testing report. Based on the digital construction of next-generation smart substations, this invention proposes a remote intelligent operation and maintenance testing method that integrates online secondary equipment maintenance, achieving fully automated remote testing of secondary equipment. This significantly reduces labor costs and enables intelligent, digital, and remote operation of substation secondary equipment testing, achieving 24-hour intelligent operation and maintenance of the power system. Attached Figure Description

[0037] Appendix Figure 1 This is a schematic diagram of the system structure of the present invention.

[0038] Appendix Figure 2 This is a schematic diagram of the control platform in this invention.

[0039] Appendix Figure 3 This is a schematic diagram of the method flow of the present invention. Detailed Implementation

[0040] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0041] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0042] Example 1: As shown in the attached document Figure 1 As shown, this embodiment of the invention discloses a localized operation and maintenance system for secondary testing equipment in substations, including a control platform, a cloud server, secondary online testing equipment, a transmission network, and the device under test;

[0043] (1) Control platform, acquire test items, output operation and maintenance commands to secondary online test equipment in substation in combination with test items, and receive and analyze test result data;

[0044] The above is attached. Figure 2 As shown, the control platform includes:

[0045] 1. Test task template library, which stores test templates for secondary online device applications. These test templates are generated from on-site test task projects.

[0046] 2. The test report management module organizes the test results data returned from the secondary online equipment tests, forms a standardized test report format for operation and maintenance requirements, and creates a test report library;

[0047] 3. Test data analysis module: The receiver collects test result data and forms a test database. By calling the test result data, it analyzes the test result data to form horizontal and vertical data analysis results of the device under test. The analysis of test result data includes filtering, searching, and analyzing the test result data.

[0048] 4. The secondary online testing equipment control module sends the test task template to the secondary online testing equipment. It evaluates whether the test and debugging are met by reading the substation status information fed back by the secondary online testing equipment. If not, it prompts the operation and maintenance personnel. If it meets the requirements, it issues an operation and maintenance command and receives the test result data fed back by the secondary online testing equipment.

[0049] 5. Secondary equipment status display module: Reads information from all secondary equipment in the interval layer in real time and displays the operating status of the secondary equipment. The information of the secondary equipment includes SV, goose, MMS and other information.

[0050] (2) The cloud server connects to the control platform and the secondary online detection equipment respectively, and performs data transfer and storage between the control platform and the secondary online detection equipment.

[0051] (3) Secondary online testing equipment, combined with operation and maintenance orders, performs online testing on the devices under test in the substation and transmits the test result data to the control platform.

[0052] The aforementioned secondary online detection equipment may include a control motherboard, a digital quantity module, a time synchronization module, and a switch quantity module. The control motherboard has wireless communication capabilities, controls the digital quantity module and the switch quantity module to send and receive data information, and receives time synchronization information from the time synchronization module to synchronize with the secondary equipment.

[0053] The aforementioned secondary online testing equipment is installed in the substation panel configuration. The secondary online testing equipment is connected to the bay layer network (bay layer switch network) via an optical Ethernet port, and exchanges data with the device under test in the substation through the bay layer network to perform testing.

[0054] The aforementioned secondary online testing equipment is connected to the station control layer network via an Ethernet port. It connects to the digital protection device and digital measurement and control device in the tested equipment through the station control layer network, reads the setting information of the digital protection device, changes the device's soft pressure plate, and reads the remote signaling and telemetry information of the digital protection device and digital measurement and control device.

[0055] The aforementioned secondary online monitoring equipment has network message reading and data statistics functions. Through the station control layer network and the bay layer network, the secondary online monitoring equipment obtains network data of the secondary equipment and collects and uploads the operating status, commissioning and decommissioning status, telemetry data, and remote signaling connectivity of the secondary equipment.

[0056] The operating system installed in the aforementioned secondary online testing equipment can operate independently. The control motherboard communicates with an external cloud server to receive data and commands from the control platform and returns the data and results to the control platform.

[0057] The aforementioned secondary online testing equipment receives test task templates from the control platform and runs automatic test programs in its built-in operating system to achieve automatic testing of the secondary equipment. It performs automated testing of sampling, protection logic, channel verification, and overall testing of digital protection devices, as well as automated testing of the remote signaling, telemetry, remote adjustment, and SOE functions of digital measurement and control devices.

[0058] The aforementioned secondary online testing equipment, during the testing process, sends data with a maintenance flag for secondary equipment that is already under maintenance, without affecting normally operating equipment.

[0059] (4) Transmission network, which connects the secondary online detection equipment and the device under test respectively, and transmits relevant data information; the transmission network includes the interval layer network and the station control layer network, which transmit the data information returned by different devices under test respectively.

[0060] (5) The device under test, in conjunction with the information sent by the secondary online testing equipment, transmits back testing information and autonomous digital message information to the secondary online testing equipment. The device under test includes a digital protection device, a digital measurement and control device, a merging unit device, and an intelligent terminal device. The digital protection device, digital measurement and control device, merging unit device, and intelligent terminal device are all connected to the transmission network.

[0061] (6) Communication encryption unit, which is connected to the control platform and the cloud server respectively, and encrypts the communication data between the control platform and the cloud server.

[0062] Example 2: As shown in the attached document Figure 3 As shown in the figure, an embodiment of the present invention discloses an operation and maintenance method for a localized operation and maintenance system for secondary testing equipment in a substation, comprising:

[0063] Step S101: The control platform starts the remote testing program to obtain the operating status of the secondary online testing equipment.

[0064] In step S102, in response to the normal operation of the secondary online testing equipment, the control platform issues a maintenance command through the cloud server. After receiving the maintenance command, the secondary online testing equipment automatically calls the automatic testing program in the built-in system.

[0065] The above-mentioned determination of the operating status of the secondary online testing equipment includes: sending the test task template to the secondary online testing equipment, evaluating whether the test and commissioning requirements are met by reading the substation status information fed back by the secondary online equipment, and if not, prompting the operation and maintenance personnel; if the requirements are met, issuing an operation and maintenance order.

[0066] Step S103: The secondary online testing device loads the test task template in the operation and maintenance command, and associates the testing device task with the corresponding SCD file according to the test task template information. The SCD file is the configuration file for the output configuration of the secondary testing device.

[0067] Step S104: The secondary online testing equipment performs automated testing on the digital protection devices, digital measurement and control devices, merging unit devices, and intelligent terminal devices that need to be tested according to the test task requirements.

[0068] The above step S104 includes:

[0069] 1. The secondary online testing equipment performs automated testing on the digital protection devices and digital measurement and control devices that need to be tested according to the test task requirements. The SV messages and GOOSE messages sent by the secondary online testing equipment are marked with maintenance tags to distinguish between online operating equipment messages and maintenance equipment test messages.

[0070] 2. The secondary online testing equipment performs automated testing on the digital measurement and control devices, merging unit devices, and intelligent terminal devices that need to be tested according to the test task requirements. It completes device sampling tests, channel remote signaling tests, protection logic tests, and overall group debugging tests. The secondary online testing equipment outputs SV information, sends and receives GOOSE information, and reads protection telemetry and remote signaling information through MMS, thus automating all secondary equipment testing tasks.

[0071] Step S105: After the test is completed, the secondary online testing equipment will feed back the test result data to the control platform, and the control platform will generate a test report that meets the operation and maintenance requirements.

[0072] This embodiment also includes preparatory work before operation and maintenance testing, including:

[0073] 1. Apply for a work permit;

[0074] 2. Assign work tasks to staff;

[0075] 3. Safety measures are implemented through one-click sequential control. The control platform sends one-click sequential control commands to the one-click sequential control equipment in the substation according to the operation and maintenance requirements, and implements one-click sequential control operations.

[0076] 4. The substation completes the implementation of safety measures with one-click sequential control. The control platform obtains the switch status of the primary equipment at the substation site through secondary online devices, performs secondary confirmation of the safety measures, and after confirming that there are no errors, performs operation and maintenance testing.

[0077] This embodiment also includes follow-up work after operation and maintenance testing, including:

[0078] 1. Restore security measures, and have one-click sequential control and control platform perform secondary confirmation of security measures;

[0079] 2. End maintenance work and restore power operation.

[0080] In this invention, the control platform serves as the operation platform for maintenance personnel. These personnel retrieve testing items from the guidance library and issue maintenance commands to the secondary online testing equipment in the substation. The secondary online testing equipment obtains the status information of each primary device from the network and assesses whether testing is feasible. Once the testing conditions are met, the secondary online testing equipment performs a one-click automated closed-loop test according to the testing items. After the test is completed, the test results are uploaded to the operation platform, which generates a standard-compliant testing report. Based on the digital construction of next-generation smart substations, this invention proposes a remote intelligent operation and maintenance testing method that integrates online secondary equipment maintenance, achieving fully automated remote testing of secondary equipment. This significantly reduces labor costs and enables intelligent, digital, and remote operation of substation secondary equipment testing, achieving 24-hour intelligent operation and maintenance of the power system.

[0081] The above technical features constitute the preferred embodiment of the present invention, which has strong adaptability and optimal implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the requirements of different situations.

Claims

1. A substation secondary test equipment on-site operation and maintenance system, characterized in that, The control platform, the cloud server, the secondary online detection device, the transmission network and the measured device are included. The control platform obtains a detection item, outputs an operation and maintenance command to the secondary online detection device in the substation in combination with the detection item, and receives and analyzes test result data. The control platform includes: A test task template library stores a test template applied by the secondary online device, and the test template applied by the secondary online device is obtained by converting a field test task item; A test report management module organizes test result data returned by the secondary online device test, forms a standardized test report format of operation and maintenance requirements, and forms a test report library; A test data analysis module receives machine-aggregated test result data and forms a test database, analyzes the test result data by calling the test result data, and forms horizontal and vertical data analysis results of the measured device; A secondary online test device control module issues a test task template to the secondary online test device, evaluates whether the substation state information fed back by the secondary online device meets the test debugging by reading the substation state information, prompts the operation and maintenance personnel if it does not meet, issues an operation and maintenance command if it meets, and receives test result data fed back by the secondary online test device; A secondary device state display module reads information of all secondary devices in the interval layer fed back by the secondary online device in real time, and displays the running state of the secondary device in real time; The cloud server is connected with the control platform and the secondary online detection device respectively, and data is transferred and stored between the control platform and the secondary online detection device; The secondary online detection device performs online detection on the measured device of the substation in combination with the operation and maintenance command, and transmits test result data to the control platform; The transmission network is connected with the secondary online detection device and the measured device respectively, and transmits related data information; the transmission network includes an interval layer network and a station control layer network, and transmits data information returned by different measured devices respectively; The measured device returns detection information and autonomous digital message information to the secondary online detection device in combination with information sent by the secondary online detection device.

2. The substation secondary test equipment operation-in-place system of claim 1, wherein, The measured device includes a digital protection device, a digital measurement and control device, a merging unit device, and an intelligent terminal device, and the digital protection device, the digital measurement and control device, the merging unit device, and the intelligent terminal device are connected with the transmission network.

3. The substation secondary test equipment operation and maintenance system in situ of claim 1 or 2, characterized in that, A communication encryption unit is further included, which is connected with the control platform and the cloud server respectively, and encrypts communication data between the control platform and the cloud server.

4. The operation and maintenance method of the substation secondary test equipment on-site operation and maintenance system according to any one of claims 1 to 3, characterized in that, The control platform starts a remote test program and obtains the running state of the secondary online detection device; In response to the normal running state of the secondary online detection device, the control platform issues an operation and maintenance command through the cloud server, and the secondary online detection device automatically calls an automatic test program in the built-in system after receiving the operation and maintenance command; The secondary online detection device loads a test task template in the operation and maintenance command, and associates the detection device task with a corresponding SCD file according to the test task template information, wherein the SCD file is a configuration file output by the secondary test device; ​ The secondary online detection equipment automatically tests the digital protection device, the digital measurement and control device, the merging unit device and the intelligent terminal device according to the test task requirements; After the test is completed, the secondary online detection equipment feeds back the test result data to the control platform, and the control platform forms a detection report meeting the operation and maintenance requirements.

5. The operation and maintenance method of the substation secondary test equipment on-site operation and maintenance system according to claim 4, characterized in that, The secondary online detection equipment automatically tests the digital protection device, the digital measurement and control device, the merging unit device and the intelligent terminal device according to the test task requirements, and comprises the following steps: The secondary online detection equipment automatically tests the digital protection device and the digital measurement and control device according to the test task requirements, and the SV message and the GOOSE message sent by the secondary online detection equipment are marked with a maintenance mark to distinguish the online running equipment message from the maintenance equipment test message; The secondary online detection equipment automatically tests the merging unit device and the intelligent terminal device according to the test task requirements, completes the device sampling test, the channel remote signaling test, the protection logic test and the whole group joint debugging test, outputs the SV information, transmits and receives the GOOSE information, reads the protection telemetry and remote signaling information through the MMS, and automatically realizes all the secondary equipment detection tasks.

6. The operation and maintenance method of the substation secondary test equipment on-site operation and maintenance system according to claim 4 or 5, characterized in that, It also includes the preparation work before the operation and maintenance detection, including: Obtaining work permission; Work arrangement for staff; Implementing safety measures through one-key sequence control, the control platform sends a one-key sequence control command to the one-key sequence control equipment in the substation according to the operation and maintenance operation requirements, and implements one-key sequence control operation; The substation one-key sequence control implements safety measures, the control platform obtains the on-site primary equipment switch state of the substation through the secondary online equipment, performs secondary confirmation of safety measures, and performs operation and maintenance detection work after determining that there is no error.

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