Intelligent substation process layer intelligent terminal detection equipment and detection method

Abstract

The invention relates to the technical field of intelligent substation detection, in particular to an intelligent substation process layer intelligent terminal detection device and method, and the device comprises a main control module, a communication module, an output monitoring module and an input control module which are connected through a bus module. The main control module is connected with the upper computer through the communication module; the main control module detects a communication plug-in of the intelligent terminal through the communication module; the main control module monitors the output state of the intelligent terminal through the output monitoring module and detects the output plug-in of the intelligent terminal; the main control module simulates external signal input through the input control module, controls the input state of the intelligent terminal, and detects the input plug-in of the intelligent terminal. According to the invention, comprehensive closed-loop detection of the intelligent terminal is realized through highly integrated modular design, the intelligent terminal is ensured to accurately receive and respond to the control instruction, and meanwhile, the equipment state information is correctly collected and reported. The operation safety of the transformer substation is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of intelligent substation detection technology, and in particular to an intelligent terminal detection device and a detection method for a process layer of an intelligent substation. Background Art

[0002] As an IED (intelligent electronic device) in smart substations, smart terminal devices are suitable for various primary switch bays or transformer bays in smart substations. Their two most important functions are: 1. Receive control instructions from the process layer network or direct control instructions from relay protection devices, and drive the corresponding export circuits to complete the control function of the primary equipment, and have the function of preventing misoperation; 2. Collect real-time data such as primary equipment position signals and alarm signals, and publish them to the process layer network through GOOSE services.

[0003] At present, the testing of intelligent terminal devices at the process layer of smart substations is mostly carried out by building a whole set of smart substation systems for debugging and testing, or by using a "relay protection tester". Building a whole set of substation systems is time-consuming, labor-intensive and costly, and is not suitable for batch testing or single device acceptance. The "relay protection tester" is generally equipped with 8 inputs and 8 outputs, while the fully equipped smart terminal has 96 inputs and more than 40 outputs. Due to the number of input and output ports, testing requires frequent line changes, and multi-channel concurrent performance testing cannot be achieved. Summary of the invention

[0004] (I) Purpose of the invention

[0005] The object of the present invention is to provide a detection device and a detection method for intelligent terminals at the process layer of an intelligent substation, which can improve the degree of automation of intelligent terminal detection and shorten the detection time.

[0006] (II) Technical solution

[0007] In order to solve the above problems, the present invention provides a smart substation process layer smart terminal detection device,

[0008] The intelligent terminal includes a communication plug-in, an input plug-in and an output plug-in.

[0009] The intelligent terminal detection device comprises:

[0010] Main control module, communication module, output monitoring module, input control module and bus module;

[0011] The main control module, the communication module, the output monitoring module and the input control module are connected via the bus module;

[0012] The main control module is connected to the host computer through the communication module;

[0013] The main control module detects the communication plug-in of the smart terminal through the communication module;

[0014] The main control module monitors the output status of the intelligent terminal through the output monitoring module and detects the output plug-in of the intelligent terminal;

[0015] The main control module simulates external signal input through the input control module and controls the input state of the intelligent terminal, and detects the input plug-in of the intelligent terminal.

[0016] In another aspect of the present invention, preferably, the output monitoring module includes a plurality of output monitoring ports and a plurality of common ports;

[0017] The output monitoring port is connected to the output plug-in.

[0018] In another aspect of the present invention, preferably,

[0019] The input control module includes a plurality of pairs of input control ports, each pair of input control ports is equipped with an output relay;

[0020] The output relay simulates external signal input and controls the input state of the intelligent terminal.

[0021] In another aspect of the present invention, preferably, the smart terminal detection device further comprises a power module, and the power module is used to supply power to the smart terminal detection device.

[0022] In another aspect of the present invention, preferably, the intelligent terminal detection device further comprises a time calibration module; the main control module is time-synchronized with the communication module, the output monitoring module and the input control module through the time calibration module.

[0023] In another aspect of the present invention, preferably, a method for detecting a process layer intelligent terminal of an intelligent substation is provided, the detection method being applicable to the intelligent terminal detection device as described above, and the detection method comprising:

[0024] Connecting the smart terminal detection device to the smart terminal;

[0025] The smart terminal detection device performs a forward detection on the smart terminal according to the received forward detection instruction;

[0026] The smart terminal detection device performs reverse detection on the smart terminal according to the received reverse detection instruction.

[0027] In another aspect of the present invention, preferably, the smart terminal detection device performs forward detection on the smart terminal according to the received forward detection instruction, including:

[0028] receiving a forward detection instruction;

[0029] The communication module sends a position change message to the intelligent terminal and starts timing;

[0030] The output monitoring module monitors the action state of the corresponding output plug-in in real time, and after detecting the action state corresponding to the position change message, stops timing and records the action time to obtain a positive detection result;

[0031] According to the forward detection result, the forward detection conclusion of the intelligent terminal is output.

[0032] In another aspect of the present invention, preferably, the smart terminal detection device performs reverse detection on the smart terminal according to the received reverse detection instruction, including:

[0033] Receiving reverse detection instructions;

[0034] The input control module simulates an external signal and inputs it into the corresponding port of the intelligent terminal, and starts timing;

[0035] The communication module monitors the messages on the network, and after detecting the shifted message corresponding to the external signal, stops timing and records the time to obtain a reverse detection result;

[0036] According to the reverse detection result, the reverse detection conclusion of the intelligent terminal is output.

[0037] In another aspect of the present invention, preferably,

[0038] Connecting the smart terminal detection device with the smart terminal includes:

[0039] The plug-in of the intelligent terminal includes a plurality of ports, each of which includes a pair of terminals;

[0040] Connecting a terminal of the smart terminal output plug-in to a monitoring port of the output monitoring module of the smart terminal detection device;

[0041] The other terminal of the same port of the same pair of plug-ins opened by the intelligent terminal is connected to the positive pole of the power module of the intelligent terminal detection device;

[0042] The common port of the monitoring module of the intelligent terminal detection device is connected to the negative pole of the power module of the intelligent terminal detection device.

[0043] In another aspect of the present invention, preferably,

[0044] Connecting the smart terminal detection device to the smart terminal further includes:

[0045] A port of the input control module of the intelligent terminal detection device is connected to a port of the input plug-in of the intelligent terminal;

[0046] The other port of the same pair of ports of the intelligent terminal detection device input control module is connected to the positive power supply of the intelligent terminal;

[0047] The common port of the smart terminal plug-in is connected to the negative pole of the power supply of the smart terminal.

[0048] (III) Beneficial effects

[0049] The above technical solution of the present invention has the following beneficial technical effects:

[0050] Through the integrated design of the present invention, the detection equipment can complete the comprehensive detection of the smart terminal without changing the connection line during one detection process. This greatly simplifies the detection process and improves the detection efficiency. The device adopts a quick-release quick-connect port design, so that the detection personnel can quickly and conveniently connect and disconnect the connection line between the smart terminal and the detection equipment. This not only saves time, but also reduces the risk of damage caused by frequent plugging and unplugging of the connection line. The detection equipment can perform concurrent detection on multiple plug-ins of the smart terminal at the same time, so as to more comprehensively evaluate the overall performance of the smart terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0052] Figure 2 is a schematic diagram of a detection environment according to an embodiment of the present invention;

[0053] Figure 3 This is a schematic diagram of the connection between an input control module and an intelligent terminal according to an embodiment of the present invention;

[0054] Figure 4 It is a schematic diagram of the connection between the monitoring module and the intelligent terminal according to an embodiment of the present invention. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0056] The accompanying drawings show schematic diagrams of structures according to embodiments of the present invention. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clarity. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0057] Obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale.

[0060] Embodiment 1

[0061] A smart terminal detection device for the process layer of a smart substation. Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 : is a schematic diagram of a detection environment of an embodiment of the present invention; Figure 1 and Figure 2 As shown, the intelligent terminal includes a communication plug-in, an input plug-in and an output plug-in, and the intelligent terminal detection device includes: a main control module, a communication module, an output monitoring module, an input control module and a bus module;

[0062] The main control module, communication module, output monitoring module and input control module are connected through the bus module; the bus module provides communication bus services between modules through a common backplane to ensure efficient and reliable data exchange between modules.

[0063] The main control module is connected to the host computer through the communication module; as the core of the entire detection equipment, the main control module is responsible for receiving instructions from the host computer and coordinating the work of each module. It has a strong data processing capability and can analyze and process data from the communication module, the output monitoring module and the input control module in real time. The main control module is also responsible for controlling the detection process to ensure that each detection step is carried out in a predetermined order and logic. It can generate corresponding reports based on the detection results and upload them to the host computer through the communication module.

[0064] The main control module detects the communication plug-in of the smart terminal through the communication module; in this example, the communication module is set to a GOOSE transceiver module, which has 8 built-in optical fiber modules, supports the sending and receiving of GOOSE messages, simulates the communication process in the substation process layer network, and verifies the communication function of the smart terminal.

[0065] The main control module monitors the output status of the intelligent terminal through the output monitoring module and detects the output plug-in of the intelligent terminal; the output monitoring module includes several output monitoring ports and several common ports; the output monitoring port is connected to the output plug-in; the output monitoring module of this embodiment provides 30 output monitoring ports and 2 common ports for monitoring the output status of the intelligent terminal (such as the position of the circuit breaker, the status of the isolating switch, etc.) to ensure the correct execution of the control instructions. Supports a maximum of 120 port expansions to meet large-scale detection needs.

[0066] The main control module simulates external signal input and controls the input state of the intelligent terminal through the input control module, and detects the input plug-in of the intelligent terminal. The input control module includes several pairs of input control ports, each pair of input control ports is equipped with an output relay; the output relay simulates external signal input and controls the input state of the intelligent terminal. The input control module in this embodiment includes 1 input and 1 output 16 pairs of input state control ports, each port is equipped with an output relay, which is used to simulate external signal input and control the input state of the intelligent terminal (such as button operation, switch position, etc.). It supports a maximum of 114 port expansions to adapt to detection scenarios of different scales.

[0067] Furthermore, the input control port and output monitoring port adopt the universal terminal design of smart substation, which realizes the quick disassembly and quick installation function, which not only simplifies the wiring process but also improves the detection efficiency. This design makes the equipment more convenient to maintain and upgrade, and reduces the maintenance cost.

[0068] Furthermore, in this embodiment, the smart terminal detection device further includes a power module, and the power module is used to supply power to the smart terminal detection device.

[0069] The intelligent terminal detection device also includes a time calibration module; the main control module and the communication module, the output monitoring module and the input control module are synchronized through the time calibration module. The main control module and each functional module are synchronized through B code to ensure the time synchronization of the entire detection process, thereby improving the accuracy and reliability of the detection results. This is particularly important for power system applications that require accurate timestamps. An embedded real-time operating system is used to ensure the real-time nature of task scheduling and the stability of the system.

[0070] Through the integrated design of the present invention, the detection equipment can complete the comprehensive detection of the smart terminal without changing the connection line during one detection process. This greatly simplifies the detection process and improves the detection efficiency. The device adopts a quick-release quick-connect port design, so that the detection personnel can quickly and conveniently connect and disconnect the connection line between the smart terminal and the detection equipment. This not only saves time, but also reduces the risk of damage caused by frequent plugging and unplugging of the connection line. The detection equipment can perform concurrent detection on multiple plug-ins of the smart terminal at the same time, so as to more comprehensively evaluate the overall performance of the smart terminal.

[0071] The intelligent terminal detection equipment of the process layer of the smart substation in this embodiment realizes comprehensive closed-loop detection of the intelligent terminal through a highly integrated modular design. It not only improves the operational safety of the substation, but also reduces maintenance costs. It is an indispensable and important tool in the construction and operation and maintenance of smart substations. Through the forward and reverse closed-loop detection functions, it ensures that the intelligent terminal can accurately receive and respond to control instructions, and correctly collect and report equipment status information. The universal terminal design of the smart substation is adopted to realize the quick disassembly and quick installation function, reduce maintenance costs, and improve detection efficiency. The main control module and each functional module are synchronized through the B code to ensure the consistency and accuracy of the detection time.

[0072] Embodiment 2

[0073] A method for detecting a process-layer intelligent terminal of an intelligent substation, the method being applicable to the intelligent terminal detection device as described above, and comprising:

[0074] Connecting the smart terminal detection device to the smart terminal;

[0075] The smart terminal detection device performs a forward detection on the smart terminal according to the received forward detection instruction;

[0076] The smart terminal detection device performs reverse detection on the smart terminal according to the received reverse detection instruction.

[0077] In this embodiment, the smart terminal detection device performs forward detection on the smart terminal according to the received forward detection instruction, including:

[0078] receiving a forward detection instruction;

[0079] The communication module sends a position change message to the intelligent terminal and starts timing; the position change message is information about a state change, such as a circuit breaker opening and closing instruction; the time from sending the message to generating an actual action is recorded;

[0080] The output plug-in is the export relay, and its action status is divided into closed and open. The collection time refers to the time from the intelligent terminal receiving GOOSE to the export, or receiving the input plug-in action signal to the GOOSE message being sent, which is generally required to be at the 10ms level. Different intelligent terminals have different detection standards.

[0081] The output monitoring module monitors the action state of the corresponding output plug-in in real time, stops timing and records the action time after detecting the action state corresponding to the position change message, and obtains the positive detection result; the positive detection result includes the action state and time, which are uniformly sent to the host computer;

[0082] Based on the forward detection result, the host computer will determine whether the response of the smart terminal device meets the requirements according to preset detection requirements, such as action time threshold and action state correctness; and output the forward detection conclusion of the smart terminal.

[0083] The smart terminal detection device performs reverse detection on the smart terminal according to the received reverse detection instruction, including:

[0084] Receiving reverse detection instructions;

[0085] The input control module simulates an external signal input into the corresponding port of the intelligent terminal and starts timing; for example, it simulates an external control signal, such as a circuit breaker opening button being pressed and starts timing at the same time;

[0086] The communication module monitors the messages on the network, and ends the timing and records the time after detecting the displacement message corresponding to the external signal to obtain the reverse detection result; monitors the GOOSE messages on the network, especially focusing on the displacement messages triggered by the control signal. Once the expected displacement message is received, the GOOSE transceiver module will end the timing, and record the time from the input of the control signal to the reception of the displacement message, and send it to the host computer. The input control module is mainly used to apply a 220V or 110V DC voltage signal to the device under test. It can be understood as a switch or a relay switch.

[0087] According to the reverse detection result, the reverse detection conclusion of the intelligent terminal is output.

[0088] The detection environment construction includes a host computer, an intelligent terminal, and an intelligent terminal detection device; the host computer is connected to the intelligent terminal detection device via Ethernet. The host computer determines the response speed of the intelligent terminal device after receiving the external control signal and the correctness of the message sending according to the preset detection requirements.

[0089] These two detection methods together ensure the reliability and real-time performance of smart terminal devices in GOOSE communication, and are important components of power system automation and intelligent detection.

[0090] Connecting the smart terminal detection device with the smart terminal includes: Figure 3 A schematic diagram showing the connection between an input control module and an intelligent terminal according to an embodiment of the present invention is shown; Figure 4 FIG. 1 shows a schematic diagram of connecting a monitoring module and an intelligent terminal according to an embodiment of the present invention. Figure 3 and Figure 4 As shown,

[0091] The plug-in opened by the intelligent terminal includes several pairs of ports;

[0092] Connecting a port of the smart terminal output plug-in to a monitoring port of the output monitoring module of the smart terminal detection device;

[0093] The other port of the same pair of plug-ins opened in the smart terminal is connected to the positive pole of the power module of the smart terminal detection device;

[0094] The common port of the monitoring module of the intelligent terminal detection device is connected to the negative pole of the power module of the intelligent terminal detection device.

[0095] Connecting the smart terminal detection device to the smart terminal further includes:

[0096] A port of the input control module of the intelligent terminal detection device is connected to a port of the input plug-in of the intelligent terminal;

[0097] The other port of the same pair of ports of the intelligent terminal detection device input control module is connected to the positive power supply of the intelligent terminal;

[0098] The common port of the smart terminal plug-in is connected to the negative pole of the power supply of the smart terminal.

[0099] The communication module and the intelligent terminal communication plug-in are connected one by one through optical fiber. Other terminals are connected one by one according to the above wiring method. The wiring terminals connected to the intelligent terminal can be plugged in and out as a whole group and reused.

[0100] In this embodiment, the dual detection means of forward and reverse direction ensures the comprehensive detection of the intelligent terminal device. The forward detection can verify the response speed and accuracy of the intelligent terminal to the instruction by sending the displacement message and monitoring the actual action of the intelligent terminal. The reverse detection can check the signal processing and transmission capabilities of the intelligent terminal by simulating the external signal and monitoring the network message. This two-way detection method greatly improves the accuracy and reliability of the detection.

[0101] Secondly, the implementation method of the method is simple and easy, and the wiring method is clear. The connection between the intelligent terminal detection equipment and the intelligent terminal is realized through standardized wiring terminals, which can be plugged in and out as a whole group and reused, which not only improves the detection efficiency, but also reduces the difficulty of operation and maintenance costs. The method also makes full use of modern communication technology and computer technology to realize the automation and intelligence of the detection process. The host computer is connected to the intelligent terminal detection equipment via Ethernet, and can receive and process the detection results in real time, and output the forward and reverse detection conclusions of the intelligent terminal. This not only improves the detection efficiency, but also makes the detection results more intuitive and easy to analyze.

[0102] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

[0103] In the above description, the technical details of patterning and etching of each layer are not described in detail. However, those skilled in the art should understand that various means in the prior art can be used to form layers, regions, etc. of desired shapes. In addition, in order to form the same structure, those skilled in the art can also design methods that are not completely the same as the methods described above.

[0104] The present invention has been described above with reference to the embodiments of the present invention. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, a person skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

[0105] Although the embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention.

[0106] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A smart terminal detection device for process layer of smart substation, characterized in that: The intelligent terminal includes a communication plug-in, an input plug-in and an output plug-in. The intelligent terminal detection device comprises: Main control module, communication module, output monitoring module, input control module and bus module; The main control module, the communication module, the output monitoring module and the input control module are connected via the bus module; The main control module is connected to the host computer through the communication module; The main control module detects the communication plug-in of the smart terminal through the communication module; The main control module monitors the output status of the intelligent terminal through the output monitoring module and detects the output plug-in of the intelligent terminal; The main control module simulates external signal input through the input control module and controls the input state of the intelligent terminal, and detects the input plug-in of the intelligent terminal.

2. The intelligent terminal detection device for process layer of intelligent substation according to claim 1 is characterized in that: The output monitoring module includes a plurality of output monitoring ports and a plurality of common ports; The output monitoring port is connected to the output plug-in.

3. The intelligent terminal detection device for process layer of intelligent substation according to claim 1 is characterized in that: The open input control module includes a plurality of pairs of open input control ports, each pair of open input control ports being equipped with an output relay; The output relay simulates external signal input and controls the input state of the intelligent terminal.

4. The intelligent terminal detection device for process layer of intelligent substation according to claim 1 is characterized in that: The smart terminal detection device further includes a power module, and the power module is used to supply power to the smart terminal detection device.

5. The intelligent terminal detection device for process layer of intelligent substation according to claim 1 is characterized in that: The intelligent terminal detection device also includes a time calibration module; the main control module is synchronized with the communication module, the output monitoring module and the input control module through the time calibration module.

6. A method for detecting intelligent terminals at the process layer of an intelligent substation, characterized in that: The detection method is applicable to the intelligent terminal detection device according to any one of claims 1 to 5, and the detection method includes: Connecting the smart terminal detection device to the smart terminal; The smart terminal detection device performs a forward detection on the smart terminal according to the received forward detection instruction; The smart terminal detection device performs reverse detection on the smart terminal according to the received reverse detection instruction.

7. The detection method according to claim 6, characterized in that: The smart terminal detection device performs forward detection on the smart terminal according to the received forward detection instruction, including: receiving a forward detection instruction; The communication module sends a position change message to the intelligent terminal and starts timing; The output monitoring module monitors the action state of the corresponding output plug-in in real time, and after detecting the action state corresponding to the position change message, stops timing and records the action time to obtain a positive detection result; According to the forward detection result, the forward detection conclusion of the intelligent terminal is output.

8. The detection method according to claim 6, characterized in that: The smart terminal detection device performs reverse detection on the smart terminal according to the received reverse detection instruction, including: Receiving reverse detection instructions; The input control module simulates an external signal and inputs it into the corresponding port of the intelligent terminal, and starts timing; The communication module monitors the messages on the network, and after detecting the shifted message corresponding to the external signal, stops timing and records the time to obtain a reverse detection result; According to the reverse detection result, the reverse detection conclusion of the intelligent terminal is output.

9. The detection method according to claim 6, characterized in that: Connecting the smart terminal detection device with the smart terminal includes: The plug-in of the intelligent terminal includes a plurality of ports, each of which includes a pair of terminals; Connecting a terminal of the smart terminal output plug-in to a monitoring port of the output monitoring module of the smart terminal detection device; The other terminal of the same port of the same pair of plug-ins opened by the intelligent terminal is connected to the positive pole of the power module of the intelligent terminal detection device; The common port of the monitoring module of the intelligent terminal detection device is connected to the negative pole of the power module of the intelligent terminal detection device.

10. The detection method according to claim 9, characterized in that: Connecting the smart terminal detection device to the smart terminal further includes: A port of the input control module of the intelligent terminal detection device is connected to a port of the input plug-in of the intelligent terminal; The other port of the same pair of ports of the intelligent terminal detection device input control module is connected to the positive power supply of the intelligent terminal; The common port of the smart terminal plug-in is connected to the negative pole of the power supply of the smart terminal.

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