Networking joint debugging method and device for digital substation and computer program product

Abstract

The invention provides a networking joint debugging method and device for a digital substation and a computer program product, and the method comprises the steps: building a wireless connection between a debugging host and at least one debugging instrument under the condition that the at least one debugging instrument is in wired communication connection with a to-be-debugged merging unit and a to-be-debugged intelligent terminal, the debugging instrument is used for generating a simulation signal of the mutual inductor; the debugging host synchronously sends a debugging instruction to the debugging instrument, so that at least one debugging instrument synchronously generates a corresponding simulation signal, and the simulation signal is sent to the corresponding relay protection device or measurement and control device through the merging unit; the relay protection device or the measurement and control device feeds back the action time to the debugging host through the intelligent terminal and the debugging instrument in sequence, full-loop debugging is completed, and the problem that in the prior art, debugging work of a digital substation wastes manpower is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of substation commissioning, in particular to a networking and commissioning method and device for a digital substation, a computer readable storage medium and a computer program product. BACKGROUND

[0002] The development of computer technology, automation technology and intelligent technology has played a positive role in promoting the development of smart grid. As a key link for collecting, distributing and transmitting electric energy in the power grid, the substation is also developing towards intelligentization, digitization, networking and standardization. Under this background, the smart substation gradually replaces the conventional integrated automation substation and plays an important role in the power system.

[0003] In the conventional integrated automation substation, the secondary lines of the current transformer and the voltage transformer are directly introduced into the indoor terminal box, so that the debugging of the secondary equipment only needs to be performed on the terminal row of the indoor protection screen, and all functions can be debugged by using an analog microcomputer relay protection tester. At the same time, since the secondary equipment of the conventional integrated automation station adopts analog input, the debugging equipment is also relatively simple, and almost only one analog microcomputer relay protection tester is needed to cover all functions. However, in the smart substation, the structure and layout of the secondary system have changed greatly, the merging unit and the intelligent terminal are added outdoors, the indoor secondary equipment cancels the AC sampling and the input and output plug-in, and all signal transmission and interaction is completed through optical fiber. Compared with the conventional station, the change in the structure and layout of the secondary system of the smart station will inevitably lead to a change in the debugging method.

[0004] For the debugging of the secondary circuit, the currently common method is to arrange a person to observe and operate the secondary equipment at the indoor secondary equipment, and to arrange a person to operate the analog relay protection tester to add analog quantity to the merging unit and the intelligent terminal at the outdoor control cabinet. One operation needs the cooperation of the indoor and outdoor personnel, which causes waste of human resources, and also causes operation errors or repeated tripping of switches due to poor cooperation or communication problems. For the protection devices involving multiple intervals (such as main transformer protection and bus differential protection), since different intervals are far apart (such as the three sides of the main transformer being located in different voltage level switch sites), it is almost impossible to realize the transmission test of the whole circuit. SUMMARY

[0005] The main purpose of the present application is to provide a networking and commissioning method and device for a digital substation, a computer readable storage medium and a computer program product, so as to at least solve the problem of waste of manpower in the debugging of the digital substation in the prior art.

[0006] In order to achieve the above object, according to one aspect of the present application, a networking and commissioning method of a digitalized substation is provided, the digitalized substation comprising a mutual inductor, a merging unit, an intelligent terminal and secondary equipment, the secondary equipment comprising a relay protection device and a measurement and control device, the merging unit and the intelligent terminal being in communication connection with the secondary equipment, the method comprising: in the case that at least one debugging instrument is in wired communication connection with the merging unit to be debugged and the intelligent terminal to be debugged, a debugging host is in wireless connection with the at least one debugging instrument, the debugging instrument being used to generate simulation signals of the mutual inductor; the debugging host synchronously sends a debugging instruction to the at least one debugging instrument, so that the at least one debugging instrument synchronously generates corresponding simulation signals, so that the simulation signals are sent to the corresponding relay protection device or measurement and control device through the merging unit, and the relay protection device or measurement and control device feeds back action time to the debugging host through the intelligent terminal and the debugging instrument in turn, to complete full-loop debugging.

[0007] Optionally, a single-loop circuit comprises the merging unit, a bus merging unit, the intelligent terminal, the relay protection device and the measurement and control device, the bus merging unit being in communication connection with the merging unit, in the case that at least one debugging instrument is in wired communication connection with the merging unit to be debugged and the intelligent terminal to be debugged, a debugging host is in wireless connection with the at least one debugging instrument, comprising: in the case that a first debugging instrument is in wired communication connection with the merging unit and the intelligent terminal, and a second debugging instrument is in wired communication connection with the bus merging unit, the debugging host is in wireless connection with the first debugging instrument and the second debugging instrument respectively; the debugging host synchronously sends a debugging instruction to the at least one debugging instrument, so that the at least one debugging instrument synchronously generates corresponding simulation signals, so that the simulation signals are sent to the corresponding relay protection device or measurement and control device through the merging unit, and the relay protection device or measurement and control device feeds back action time to the debugging host through the intelligent terminal and the debugging instrument in turn, to complete full-loop debugging, comprising: the debugging host synchronously sends a debugging instruction to the first debugging instrument and the second debugging instrument, so that the first debugging instrument and the second debugging instrument synchronously generate corresponding simulation signals, so that the simulation signals are sent to the corresponding relay protection device or measurement and control device through the merging unit, and the relay protection device or measurement and control device feeds back action time to the debugging host through the intelligent terminal and the first debugging instrument in turn, to complete debugging of the single-loop circuit.

[0008] Optionally, the multi-loop circuit includes a plurality of first single-loop circuits, the plurality of first single-loop circuits share one of the relay protection devices or share one of the measurement and control devices, in a case that at least one debugging instrument establishes a wired communication connection with the merging unit to be debugged and the intelligent terminal to be debugged respectively, the debugging host establishes a wireless connection with the at least one debugging instrument, including: in a case that the plurality of debugging instruments establish wired communication connections with the merging units and the intelligent terminals of the plurality of first single-loop circuits one by one respectively, the debugging host establishes wireless connections with the plurality of debugging instruments respectively; the debugging host synchronously sends a debugging instruction to the at least one debugging instrument, so that the at least one debugging instrument synchronously generates a corresponding simulation signal, so that the simulation signal is sent to the corresponding relay protection device or the measurement and control device through the merging unit, and the relay protection device or the measurement and control device feeds back action time to the debugging host through the intelligent terminal and the debugging instrument in turn, to complete full-loop debugging, including: the debugging host synchronously sends a debugging instruction to the plurality of debugging instruments, so that the plurality of debugging instruments synchronously generate corresponding simulation signals, so that the simulation signals are sent to the relay protection device or the measurement and control device through the merging unit, and the relay protection device or the measurement and control device feeds back action time to the debugging host through the intelligent terminal and the debugging instrument in turn, to complete the debugging of the multi-loop circuit.

[0009] Optionally, the multi-loop circuit includes a first multi-loop circuit and a second multi-loop circuit, the first multi-loop circuit includes a single-loop circuit of a high-voltage side of a main transformer, a single-loop circuit of a medium-voltage side of the main transformer and a single-loop circuit of a low-voltage side of the main transformer, the relay protection device shared by the first multi-loop circuit is a main transformer relay protection device, the second multi-loop circuit includes two outgoing line loop circuits, one main transformer loop circuit and one bus tie loop circuit, and the relay protection device shared by the second multi-loop circuit is a bus protection device.

[0010] Optionally, the cross-bay loop comprises a plurality of second single-bay loops, one of the second single-bay loops corresponding to one of the relay protection devices or one of the measurement and control devices, and the debugging host establishes a wireless connection with the at least one debugging instrument in a case where the at least one debugging instrument respectively establishes a wired communication connection with the merging unit and the intelligent terminal to be debugged, comprising: the debugging host respectively establishes a wireless connection with a plurality of the debugging instruments in a case where the plurality of the debugging instruments respectively establish wired communication connections with the merging units and the intelligent terminals of the plurality of the second single-bay loops one by one; the debugging host synchronously sends a debugging instruction to the at least one debugging instrument, so that the at least one debugging instrument synchronously generates a corresponding simulation signal, so that the simulation signal is sent to the corresponding relay protection device or measurement and control device through the merging unit, and the relay protection device or measurement and control device feeds back an action time to the debugging host through the intelligent terminal and the debugging instrument in turn to complete full-loop debugging, comprising: the debugging host synchronously sends a debugging instruction to a plurality of the debugging instruments, so that the plurality of the debugging instruments synchronously generate corresponding simulation signals, so that the simulation signals are sent to the corresponding relay protection devices or measurement and control devices through the merging units, and the relay protection devices or measurement and control devices feed back action times to the debugging host through the intelligent terminals and the debugging instruments in turn to complete the debugging of the cross-bay loop.

[0011] Optionally, in a case where the debugging instrument does not have wireless function, the debugging host establishes a wireless connection with the at least one debugging instrument, comprising: establishing a wired communication connection between the debugging instrument and a wireless device one by one; and establishing a wireless connection between each of the wireless devices and the debugging host.

[0012] Optionally, in a case where the debugging instrument does not have wireless function, the debugging host establishes a wireless connection with the at least one debugging instrument, comprising: setting a wireless module on the debugging instrument; and establishing a wireless connection between the wireless module of each of the debugging instruments and the debugging host.

[0013] According to another aspect of the present application, a networking commissioning device of a digitalized substation is provided, the digitalized substation comprising a mutual inductor, a merging unit, an intelligent terminal and secondary equipment, the secondary equipment comprising a relay protection device and a measurement and control device, the merging unit and the intelligent terminal being in communication connection with the secondary equipment, the device comprising: an establishing unit configured to establish a wireless connection between a debugging host and at least one debugging instrument in a case that the at least one debugging instrument respectively establishes a wired communication connection with the merging unit to be debugged and the intelligent terminal to be debugged, the debugging instrument being configured to generate an emulated signal of the mutual inductor; and a sending unit configured to send a debugging instruction synchronously from the debugging host to the at least one debugging instrument, so that the at least one debugging instrument generates corresponding emulated signals synchronously, and so that the emulated signals are sent to the corresponding relay protection device or measurement and control device through the merging unit, the relay protection device or measurement and control device feeding back action times to the debugging host in turn through the intelligent terminal and the debugging instrument, and completing full-loop debugging.

[0014] According to still another aspect of the present application, a computer readable storage medium is provided, the computer readable storage medium comprising a stored program, wherein the program, when executed, controls a device where the computer readable storage medium is located to perform any of the methods.

[0015] According to still another aspect of the present application, a computer program product is provided, comprising a computer program, the computer program being executed by a processor to implement any of the methods.

[0016] By applying the technical solution of the present application, in the networking commissioning method, at least one debugging instrument is connected with the merging unit to be debugged and the intelligent terminal to be debugged respectively, then a debugging host establishes a wireless connection with the at least one debugging instrument, so that the debugging host can synchronously control the debugging instrument to generate corresponding emulated signals, the emulated signals are sent to the corresponding relay protection device or measurement and control device through the merging unit, the relay protection device or measurement and control device feeds back action times to the debugging host in turn through the intelligent terminal and the debugging instrument, the action time of the debugging host is compared with the actual action time of the relay protection device or measurement and control device, and full-loop debugging is completed, without the need for multiple persons to cooperate, one person to control the debugging host and view the relay protection device or measurement and control device, and multiple persons to control the debugging instrument, thus solving the problem of wasting manpower in the debugging work of the digitalized substation in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A block diagram of a "three-layer two-network" layout structure of an intelligent substation is shown according to an embodiment of the present application;

[0018] Figure 2A structure block diagram of a "one device + intelligent terminal" mode loop provided in an embodiment of the present application is shown.

[0019] Figure 3 A structure block diagram of an inter-line spacing process layer loop provided in an embodiment of the present application is shown.

[0020] Figure 4 A structure block diagram of a process layer network provided in an embodiment of the present application is shown.

[0021] Figure 5 A structure block diagram of an inter-line spacing process layer network networking method provided in an embodiment of the present application is shown.

[0022] Figure 6 A hardware structure block diagram of a mobile terminal performing a networking joint debugging method provided in an embodiment of the present application is shown.

[0023] Figure 7 A flowchart of a networking joint debugging method provided in an embodiment of the present application is shown.

[0024] Figure 8 A single spacing networking debugging scheme provided in an embodiment of the present application is shown.

[0025] Figure 9 A three-circle main transformer protection device networking joint debugging scheme provided in an embodiment of the present application is shown.

[0026] Figure 10 A bus protection device networking joint debugging scheme provided in an embodiment of the present application is shown.

[0027] Figure 11 A cross-spacing networking joint debugging scheme provided in an embodiment of the present application is shown.

[0028] Figure 12 A wireless network design scheme provided in an embodiment of the present application is shown.

[0029] Figure 13 A hardware structure diagram of a built-in wireless control module provided in an embodiment of the present application is shown.

[0030] Figure 14 Another wireless network design scheme provided in an embodiment of the present application is shown.

[0031] Figure 15 A structure block diagram of a networking joint debugging device provided in an embodiment of the present application is shown.

[0032] Wherein, the above-mentioned drawings include the following reference signs:

[0033] 102, processor; 104, memory; 106, transmission device; 108, input and output device. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0036] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, not necessarily to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] As introduced in the background, the debugging work of the digital substation in the prior art wastes manpower. To solve the technical problem, the embodiments of the present application provide a networking and debugging method, device, computer readable storage medium and computer program product for a digital substation.

[0038] First, the basic structure of the secondary system of the digital substation is introduced. The most significant difference between the intelligent station and the conventional substation is the layout of the secondary system. The "three-layer two-network" layout of the 220kV intelligent substation is shown in Figure 1 .

[0039] The so-called "three-layer two-network" layout is a whole framework that adopts three levels of process layer, interval layer and station control layer in physics, and is connected by process layer network and station control layer network in logic. The "three layers" refer to the three levels of process layer, interval layer and station control layer, and the "two networks" refer to the process layer network and the station control layer network.Figure 1 The basic functions and structures of each level and network are as follows: (1) process layer: the layer is located at the bottom and is used to realize analog-digital conversion of sampling information and tripping information, and mainly includes merging units, intelligent terminals and the like. (2) bay layer: the layer is located in the middle and is used to realize functions such as relay protection, measurement and control, fault recording, protocol conversion and the like, and plays a role of connecting the upper and lower layers. The layer mainly includes devices such as relay protection devices, measurement and control devices, fault recording devices, metering devices, network analysis devices and the like. (3) station control layer: the layer is located at the top and is used to realize functions such as collection, analysis, calculation, monitoring and control of information of the whole station to the lower layer, and is used to realize functions such as information interaction, remote control and data transmission to the upper layer. The layer mainly includes devices such as monitoring host computers, remote devices, time synchronization devices and the like. (4) process layer network: located between the process layer and the bay layer, and is used to realize information interaction between the process layer and the bay layer, and mainly includes communication devices such as process layer switches. (5) station control layer network: located between the bay layer and the station control layer, and is used to realize information interaction between the bay layer and the station control layer, and mainly includes communication devices such as bay layer switches and central switches.

[0040] The "three-layer two-network" layout constitutes the main framework of digital communication of the intelligent substation, and the information exchanged includes sampling information, position information, tripping information, device fault information and the like.

[0041] The following will specifically describe each layer:

[0042] 1.1 Process layer:

[0043] The process layer devices mainly include merging units and intelligent terminals, wherein the merging units can be divided into bus merging units and bay merging units, and the intelligent terminals can be divided into circuit breaker intelligent terminals and main transformer body intelligent terminals.

[0044] (1) Merging unit:

[0045] According to the relevant definition of IEC64850 standard, the merging unit (MU) refers to a physical unit used for time-related combination of current and voltage data from secondary transducers. The merging unit is matched with a current (voltage) transformer. At present, the common combination modes of the merging unit and the transformer mainly include two modes, one is a "transformer + merging unit" mode (dispersed arrangement form), and the other is an electronic transformer mode (integrated arrangement mode). Limited to the fact that the electronic transformer technology is still in the exploratory development stage and has poor reliability, at present, the "transformer + merging unit" mode is widely used in intelligent substations, but with the continuous development of the electronic transformer, its advantages such as strong insulation performance, wide transient response range and no saturation resonance will gradually emerge, and it will certainly replace the "transformer + merging unit" mode. The loop structure of the "transformer + merging unit" mode is as follows: Figure 1as shown.

[0046] As Figure 1 shown, the voltage signal is collected in the form of "voltage transformer + bus voltage merging unit", the current signal is collected in the form of "current transformer + bay merging unit", the bus merging unit is connected with the bay merging unit in the form of optical fiber cascade to realize time-related combination of current and voltage data, and then the bay merging unit provides digital sampling information to the bay equipment.

[0047] (2) Intelligent terminal:

[0048] According to the relevant definition of IEC61850 standard, the intelligent terminal (Smart Terminal, TM) refers to the intelligent device for measuring and controlling the primary equipment such as circuit breaker, disconnector, main transformer, etc. Similarly, the intelligent terminal also has two layout forms, namely "primary equipment + intelligent terminal" mode and intelligent primary equipment mode. Since the intelligent primary equipment technology is not mature, the "primary equipment + intelligent terminal" mode is widely used at present, and its basic structure is as shown in Figure 2 .

[0049] Taking the line bay as an example, the hardware structure and circuit composition of the process layer equipment are as shown in Figure 3 .

[0050] 1.2 Bay level:

[0051] The bay level is the core level of the secondary system of the intelligent station, mainly including the devices such as relay protection device, measurement and control device, fault recording device, metering device, network analysis device, etc. Compared with the conventional station, the functions of the devices in the bay level of the intelligent station do not change much, but the configuration form and working principle change greatly, mainly in the following aspects.

[0052] (1) Change of sampling mode:

[0053] The analog input plug-in (AC sampling plug-in) of the protection, measurement and control, recording, metering and other devices is cancelled, the AC plug-in is equivalent to being externalized as a merging unit, and the SV optical fiber interface is taken instead, and the CPU plug-in directly collects the SV optical signal.

[0054] (2) Change of input and output:

[0055] All the devices cancel the input and output plug-in, and the GOOSE optical fiber interface is taken instead, which is equivalent to externalizing the input and output plug-in as an intelligent terminal, and the CPU plug-in directly interacts with the intelligent terminal through the optical fiber to realize the GOOSE information exchange.

[0056] (3) Change of communication protocol:

[0057] The conventional station mostly adopts 103 protocol, and each device will cause different protocol due to different manufacturers. The intelligent station secondary device adopts IEC61850 standard as communication protocol, and the whole station is unified.

[0058] (4) Change of communication circuit:

[0059] The conventional station interval layer secondary device adopts cable hard wiring for data transmission and interaction, and different types and specifications of cables are selected according to the type of analog quantity, while the intelligent station adopts a unified type of optical fiber for SV or GOOSE information interaction.

[0060] (5) Change of communication mode:

[0061] Since the conventional station uses cable for data interaction, one cable is needed for one signal, resulting in complex wiring. The intelligent station secondary device uses optical fiber for data interaction, and only two optical fibers are needed between two devices, with clear and accurate wiring.

[0062] (6) Change of device pressure plate:

[0063] In addition to configuring various functions and outlet soft pressure plates, the conventional station interval layer device also corresponds to the hard pressure plate on the protection screen, adopting double pressure plate configuration mode. The intelligent station does not configure other hard pressure plates except for "maintenance" and "remote operation" two hard pressure plates, and the functions and outlets are all configured in the form of soft pressure plate inside the device, but the corresponding outlet pressure plate is configured at the outdoor intelligent terminal.

[0064] (7) Change of communication interface:

[0065] The conventional station communication interface adopts analog quantity interface suitable for 103 protocol, and the interface is more, while the intelligent station adopts Ethernet interface based on IEC61850 standard, and the interface quantity is less.

[0066] (8) Add network analyzer:

[0067] The conventional station adopts cable for communication, and only one signal flows in each cable, so it is easy to analyze fault information. The intelligent station transmits a large amount of SV and GOOSE information in each optical fiber. In order to facilitate the analysis of all signals and the identification of SV and GOOSE information causing faults, the intelligent station introduces a special network analyzer device. The configuration mode of this device is the same as that of the fault recorder.

[0068] Table 1

[0069] Serial number Item Conventional station Intelligent station 1 Sampling mode Analog signal SV digital signal 2 In-out Analog signal GOOSE digital signal 3 Communication protocol 103 protocol IEC61850 protocol 4 Communication loop Cable hard loop Optical fiber "virtual loop" 5 Communication mode Non-networked Networked 6 Device press plate Soft and hard press plate Only soft press plate 7 Communication interface Analog quantity interface Optical fiber Ethernet interface 8 Network analyzer No Yes

[0070] 1.3 Station control layer:

[0071] The station control layer devices mainly include a monitoring host, a remote gateway, an MMS network recorder, a network analysis host, a GPS / Beidou time synchronization device, an electric energy acquisition device, a communication gateway and an integrated application server. The devices involved in the station debugging mainly include the monitoring host and the remote gateway, and the MMS network recorder and the network analysis host are specific to the intelligent station. The functions of the above four devices will be described below, and the functions of other devices are similar to those of the conventional station.

[0072] (1) The monitoring host:

[0073] The monitoring host can also be called a monitoring background in engineering practice, and plays a role similar to the brain in the intelligent substation. The operation and inspection personnel can monitor and operate the corresponding primary and secondary devices in the substation in real time through the monitoring background. The monitoring background is generally configured in double sets, and can also have the function of a five-prevention machine.

[0074] (2) The remote gateway:

[0075] The main function of the remote gateway is to realize the communication between the devices in the station and the control center. For the intelligent station, the communication between the devices in the station is based on the IEC61850 protocol, while the communication between the devices in the control center adopts the RS485 serial communication protocol, and the two cannot be interchanged. Therefore, protocol conversion is needed, and the remote gateway has this protocol conversion function. At the same time, as an intermediate device between the station and the master station, it also plays a certain role in safety isolation.

[0076] (3) The MMS network recorder:

[0077] The MMS network recorder is used for real-time monitoring and recording of the MMS messages transmitted between the station control layer devices, so as to facilitate the discovery of communication failures caused by MMS message transmission.

[0078] (4) The network analysis host:

[0079] The network analysis host is connected to all network message analyzers in the station through a networking mode, so as to realize the centralized collection of network messages and facilitate observation and monitoring.

[0080] 1.4 Communication network:

[0081] As can be seen from the "three-layer two-network" architecture of the intelligent station, the communication network of the intelligent station includes the process layer network and the station control layer network. The debugging scheme studied in the present application is mainly for the process layer and the bay layer, and the network between the above two layers is called the process layer network. Therefore, the composition of the process layer network will be mainly studied, and the structure and layout of the station control layer network are similar to those of the conventional station, so they will not be described again.

[0082] In engineering, the "networking mode" is often used to depict the structure and principle of the process layer network. The networking mode refers to the connection mode between the process layer and the bay layer devices. The connection between the process layer and the bay is mainly the interaction of sampling and control information. Therefore, the networking mode can also be referred to as the sampling and tripping mode. The sampling mode refers to the mode in which the bay layer device collects SV information and GOOSE information from the process layer device. According to whether a switch is passed, the sampling mode can be divided into two modes, namely, direct sampling and network sampling, which are referred to as "direct sampling" and "network sampling" respectively. The tripping mode refers to the mode in which the process layer device controls the bay layer device. Similarly, according to whether a switch is passed, the tripping mode can be divided into two modes, namely, direct tripping and network tripping, which are referred to as "direct tripping" and "network tripping" respectively.

[0083] The network structure of the "direct sampling" and "direct tripping" mode is shown in Figure 4 (a), the network structure of the "network sampling" and "network tripping" mode is shown in Figure 4 (b), the SV network switch and the GOOSE network switch are represented by the horizontal lines in Figure 4 (b).

[0084] Since there are two modes for sampling and tripping respectively, four networking modes can be formed by the combination of the two modes, namely, the direct sampling and direct tripping mode, the network sampling and network tripping mode, the direct sampling and network tripping mode, and the network sampling and direct tripping mode. At present, considering the reliability of information collection and the sharing of data interaction, different devices flexibly use different networking modes. The relay protection device is aimed at the collection of fault information and the removal of faults, and therefore has a very high requirement for reliability. Therefore, the direct sampling and direct tripping networking mode is generally used. The measurement and control device and the metering device are mainly aimed at the monitoring information in the normal state, and therefore have a low requirement for sampling and tripping. The networking mode can be flexibly used according to the actual situation. At present, the direct sampling and network tripping mode is more commonly used.

[0085] Taking the line bay as an example, the networking mode of the process layer network is shown in Figure 5 .

[0086] Since the bay layer device has changed in structure and working principle, the debugging method will also change. In summary, the differences between the intelligent station bay layer device and the conventional station device in structure and principle are shown in Table 1.

[0087] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the accompanying drawings in the embodiments of the present application.

[0088] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking the execution on the mobile terminal as an example, Figure 6 is a hardware structure block diagram of a mobile terminal of a networking and debugging method of a digital substation according to an embodiment of the present application. As shown inFigure 6 As shown, a mobile terminal may include one or more ( Figure 6 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 6 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 6 The more or fewer components shown, or having the same Figure 6 The different configurations shown.

[0089] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the network commissioning method of the digital substation in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0090] This embodiment provides a method for network commissioning of a digital substation that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than that shown here.

[0091] Figure 7is a flowchart of a networking and commissioning method of a digital substation according to an embodiment of the present application, the digital substation comprising a mutual inductor, a merging unit, an intelligent terminal and secondary equipment, the secondary equipment comprising a relay protection device and a measurement and control device, the merging unit and the intelligent terminal being in communication connection with the secondary equipment. As shown in Figure 7 the method comprises the following steps:

[0092] In step S201, a debugging host establishes a wireless connection with at least one debugging instrument in a case where the debugging instrument is in wired communication connection with the merging unit to be debugged and the intelligent terminal to be debugged, the debugging instrument being used to generate a simulation signal of the mutual inductor;

[0093] In step S202, the debugging host synchronously sends a debugging instruction to the at least one debugging instrument, so that the at least one debugging instrument synchronously generates a corresponding simulation signal, so that the simulation signal is sent to the corresponding relay protection device or measurement and control device through the merging unit, and the relay protection device or measurement and control device feeds back an action time to the debugging host through the intelligent terminal and the debugging instrument in turn, to complete full-loop debugging.

[0094] In the networking and commissioning method, the at least one debugging instrument is connected with the merging unit to be debugged and the intelligent terminal to be debugged respectively, and then the debugging host establishes a wireless connection with the at least one debugging instrument, so that the debugging host can synchronously control the debugging instrument to generate a corresponding simulation signal, so that the simulation signal is sent to the corresponding relay protection device or measurement and control device through the merging unit, the relay protection device or measurement and control device feeds back an action time to the debugging host through the intelligent terminal and the debugging instrument in turn, the action time of the debugging host is compared with the actual action time of the relay protection device or measurement and control device, and full-loop debugging is completed, without the need for multiple persons to cooperate, one person to control the debugging host and view the relay protection device or measurement and control device, and multiple persons to control the debugging instrument, thereby solving the problem of waste of manpower in the debugging work of the digital substation in the prior art.

[0095] The loop debugging of the smart substation comprises local loop debugging and full-loop debugging.

[0096] The local loop debugging is debugging performed on a loop of a certain region, such as a relay protection device tripping loop, a measurement and control device sampling loop, or even a debugging of the on-off condition of a certain optical fiber, etc. The local loop debugging is more applied in fault positioning and abnormality searching, etc., and the debugging range is gradually narrowed to finally find out the fault or abnormality.

[0097] The whole loop debugging refers to the global debugging from the starting point of sampling to the terminal of control. For the relay protection loop, it refers to starting from the secondary side of the current transformer and the voltage transformer, passing through the merging unit, the protection device, the intelligent terminal, and finally to the circuit breaker tripping. For the monitoring loop, it refers to starting from the secondary side of the current and voltage transformer, passing through the merging unit, the measurement and control device, the switch, the remote device, and finally to the control center. The whole loop debugging is most applied in the field of construction station acceptance and whole station power-off maintenance, and the workload of the whole loop debugging is huge.

[0098] Whether it is whole loop debugging or partial loop debugging, the focus of debugging is often the "pass" and "not pass" of the loop, so only a reasonable value needs to be observed, which brings the possibility for the implementation of the networking and joint debugging scheme.

[0099] For loop debugging, especially whole loop debugging, the starting point of debugging is the secondary side of the transformer, and a microcomputer relay protection calibrator is needed, so this section proposes a networking and joint debugging scheme for the whole loop debugging with the largest workload in the intelligent station. According to different objects, the networking and joint debugging scheme can be divided into single interval networking debugging scheme, multi-interval networking debugging scheme, and cross-interval networking debugging scheme.

[0100] In order to realize single interval loop debugging, in an optional implementation, the single interval loop includes the merging unit, the bus merging unit, the intelligent terminal, the relay protection device and the measurement and control device, the bus merging unit is in communication connection with the merging unit, and the step S201 includes: in the case that the first debugging instrument is in wired communication connection with the merging unit and the intelligent terminal, and the second debugging instrument is in wired communication connection with the bus merging unit, the debugging host is in wireless connection with the first debugging instrument and the second debugging instrument; the step S202 includes: the debugging host synchronously sends a debugging instruction to the first debugging instrument and the second debugging instrument, so that the first debugging instrument and the second debugging instrument synchronously generate corresponding simulation signals, so that the simulation signals are sent to the corresponding relay protection device or measurement and control device through the merging unit, and the relay protection device or measurement and control device feeds back the action time to the debugging host through the intelligent terminal and the first debugging instrument in turn, to complete the debugging of the single interval loop.

[0101] In the above embodiments, from the "three layers and two networks" architecture of the secondary system of the smart substation, it can be seen that the relay protection device and the measurement and control device belong to the bay layer equipment and are located in the substation control room, while the merging unit and the intelligent terminal belong to the process layer equipment and are arranged in the control cabinet of the outdoor switchyard. For the relay protection device and the measurement and control device of a single bay (such as a line bay, a capacitor bay, a single side of a main transformer, etc.), in the conventional debugging mode, one person needs to check the device action at the indoor relay protection screen, and one person needs to operate the microcomputer relay protection tester to add analog quantity to the merging unit at the outdoor switchyard control cabinet, and then the two persons communicate through the intercom or mobile phone to operate the entire debugging process. This debugging mode will undoubtedly cause waste of manpower and resources, and at the same time, due to improper cooperation, it will cause repeated operation, excessive analog quantity, repeated tripping of circuit breakers, etc., which will cause great loss to the relay protection equipment and the switch equipment. The single-bay networking debugging refers to the full-loop networking debugging method for a single bay (such as a line bay, a capacitor bay, a single side of a main transformer, etc.), and the basic working principle is to use wireless communication technology to form a local area network with the secondary equipment such as the merging unit, the intelligent terminal, the relay protection device, the measurement and control device, etc. involved in the single bay, so as to realize single debugging. In order to better illustrate the working principle of the single-bay networking debugging, the most common debugging of the relay protection device and the measurement and control device is taken as an example for illustration, and the specific scheme is shown in Figure 8 A microcomputer relay protection tester is placed at the outdoor switchyard control cabinet, the tester is connected to the merging unit in the correct wiring mode to simulate the secondary side of the circuit mutual inductor to input analog quantity, and the tester is connected to the intelligent terminal in the correct wiring mode to collect feedback information such as the action time of the intelligent terminal. A mobile debugging host (a notebook computer, a tablet computer or a smart phone can be selected) is configured at the indoor relay protection screen, the debugging host is connected to the outdoor microcomputer relay protection tester through wireless network communication, the remote control of the outdoor microcomputer relay protection tester can be realized by controlling the debugging host, and reliable debugging of the relay protection device or the measurement and control device by one person can be realized.

[0102] In addition, in order to ensure that the safety protection system of the secondary system in the smart station is not damaged, the communication gateway and other safety isolation devices are added between the debugging host and the microcomputer relay protection tester in the scheme, which can effectively prevent malicious intrusion of viruses into the secondary system. From the Figure 8It can be known that when the relay protection device or the measurement and control device is debugged, the correct analog quantity needs to be added to the interval merging unit and the bus merging unit, the interval merging unit and the bus merging unit are not arranged in the same control cabinet, if the single interval relay protection device or the measurement and control device is debugged, at least one person needs to be arranged at the interval merging unit, the bus merging unit and the indoor relay protection screen, the simultaneity and effectiveness of the operation cannot be effectively guaranteed, and the human and material resources are wasted. The single interval networking debugging scheme is adopted, one person can realize the centralized and unified control of the whole debugging process, the simultaneity and effectiveness of the analog quantity input can be greatly improved, and the work efficiency is further improved.

[0103] In order to realize the multi-interval loop debugging, in an optional implementation, the multi-interval loop includes a plurality of first single-interval loops, the plurality of first single-interval loops share one relay protection device or share one measurement and control device, and the step S201 includes: a step S2012, under the condition that the plurality of debugging instruments are respectively and one-to-one corresponding to the merging units and the intelligent terminals of the plurality of first single-interval loops to establish wired communication connections, the debugging host is respectively connected with the plurality of debugging instruments in a wireless mode; and the step S202 includes: a step S2022, the debugging host synchronously sends a debugging instruction to the plurality of debugging instruments, so that the plurality of debugging instruments synchronously generate corresponding simulation signals, the simulation signals are sent to the relay protection device or the measurement and control device through the merging units, the relay protection device or the measurement and control device sequentially feeds back action times to the debugging host through the intelligent terminals and the debugging instruments, and the debugging of the multi-interval loop is completed.

[0104] In the above embodiments, the multiple interval relaying protection mainly includes bus protection, main transformer protection, etc. According to the "three-layer" two-network architecture of the intelligent station secondary system, the multiple intervals involved in the bus protection and the main transformer protection are often arranged dispersedly and far apart. In the conventional debugging mode, to realize the full loop debugging of the bus protection or the main transformer protection, it is necessary to connect tens or hundreds of meters of connecting lines, which on the one hand will cause the on-site wiring confusion, increase the work difficulty, increase the on-site safety hazards and dangerous points, and on the other hand, the long-distance wiring is easy to cause experimental data deviation and interference. This working mode is obviously unrealistic. Therefore, at present, the intelligent station generally adopts the single interval plus quantity mode for the full loop debugging of the main transformer protection and the bus protection, which cannot comprehensively simulate the actual fault situation. In order to overcome this problem, the full loop debugging of the multiple interval protection devices and the measurement and control devices is realized through networking. The so-called multiple interval networking debugging is a networking debugging mode for the multiple interval protection devices and the measurement and control devices of the main transformer and the bus. The basic working principle is similar to the single interval networking debugging scheme, that is, using wireless communication technology, the secondary devices involved in the full loop debugging of the multiple interval protection, measurement and control of the main transformer, bus, etc. such as merging unit, intelligent terminal, protection device, measurement and control device are formed into a local area network, and one person realizes the full loop fault simulation.

[0105] The above multiple interval loops include a first multiple interval loop and a second multiple interval loop. The first multiple interval loop includes a single interval loop of the high voltage side of the main transformer, a single interval loop of the medium voltage side of the main transformer and a single interval loop of the low voltage side of the main transformer. The relay protection device commonly used by the first multiple interval loop is a main transformer relay protection device. The second multiple interval loop includes two outgoing line interval loops, one main transformer interval loop and one bus tie interval loop. The relay protection device commonly used by the second multiple interval loop is a bus protection device.

[0106] The working principle of the multiple interval networking debugging will be described in detail below by taking the debugging of three circle main transformer and bus protection as examples.

[0107] (1) Main transformer protection networking debugging scheme:

[0108] The multiple interval networking debugging scheme of the single set protection of the three circle main transformer is as follows: Figure 9The debugging of the main transformer relay protection device involves the circuit breakers of the three sides of the main transformer and the circuit breakers of the three sides of the bus, and three microcomputer relay protection check instruments need to be configured for each side, which are connected to the bus merging unit, the interval merging unit and the intelligent terminal and the bus intelligent terminal respectively according to the correct wiring mode, for sending analog circuit voltage and receiving action information feedback. It can be analyzed that if the full-loop actual situation simulation debugging of the three sides of the main transformer is to be realized, a total of 9 microcomputer relay protection check instruments need to be connected, and the input of the analog quantity needs to be controlled at the same time, a total of 10 people are needed, one person is located at the indoor protection screen to check the relay protection device, and 9 people are located outdoors to operate the microcomputer relay protection check instrument, which cannot guarantee the simultaneity and effectiveness of the test operation. The multi-interval networking joint debugging scheme proposed in the application can remotely control the 9 outdoor microcomputer relay protection check instruments through wireless network communication by the indoor debugging host, and only one person is needed to realize the full-loop actual situation simulation debugging of the main transformer protection, which greatly saves the labor cost and improves the success rate of debugging and the simultaneity of data input. Similarly, the communication gateway and other safety isolation devices are added between the debugging host and the microcomputer relay protection check instrument to prevent malicious intrusion of viruses into the secondary system of the intelligent station.

[0109] (2) Bus protection networking joint debugging scheme:

[0110] Taking a common double-bus wiring as an example, assuming that the bus is connected to 2 outgoing interval, 1 main transformer interval and 1 bus tie interval, the networking joint debugging scheme of the bus protection is as shown in Figure 10 The debugging of the main transformer relay protection device involves the circuit breakers of the three sides of the main transformer and the circuit breakers of the three sides of the bus, and three microcomputer relay protection check instruments need to be configured for each side, which are connected to the bus merging unit, the interval merging unit and the intelligent terminal and the bus intelligent terminal respectively according to the correct wiring mode, for sending analog circuit voltage and receiving action information feedback. It can be analyzed that if the full-loop actual situation simulation debugging of the three sides of the main transformer is to be realized, a total of 9 microcomputer relay protection check instruments need to be connected, and the input of the analog quantity needs to be controlled at the same time, a total of 10 people are needed, one person is located at the indoor protection screen to check the relay protection device, and 9 people are located outdoors to operate the microcomputer relay protection check instrument, which cannot guarantee the simultaneity and effectiveness of the test operation. The multi-interval networking joint debugging scheme proposed in the application can remotely control the 9 outdoor microcomputer relay protection check instruments through wireless network communication by the indoor debugging host, and only one person is needed to realize the full-loop actual situation simulation debugging of the main transformer protection, which greatly saves the labor cost and improves the success rate of debugging and the simultaneity of data input. Similarly, the communication gateway and other safety isolation devices are added between the debugging host and the microcomputer relay protection check instrument to prevent malicious intrusion of viruses into the secondary system of the intelligent station.

[0111] Figure 10 ​It can be known from the analysis that if the simulation debugging of the whole loop of the bus protection is to be realized, totally 5 microcomputer relay protection check instruments need to be connected, and with the increase of the interval, the check instruments to be connected will also increase. If all the check instruments are controlled to debug the bus protection at the same time, totally 6 persons are needed, one person is located at the indoor protection screen to check the relay protection device, and 5 persons are located at the outdoor microcomputer relay protection check instruments to operate, which cannot guarantee the simultaneity and effectiveness of the test operation. The multi-interval networked debugging scheme proposed in the application is adopted, the indoor debugging host remotely controls the 5 outdoor microcomputer relay protection check instruments through the wireless network communication mode, and only one person can realize the simulation debugging of the whole loop of the bus protection, which greatly saves the labor cost and can improve the success rate of the debugging and the simultaneity of the data input. Similarly, the communication gateway and other safety isolation devices are added between the debugging host and the microcomputer relay protection check instrument to prevent the malicious invasion of the virus to the secondary system of the intelligent station.

[0112] In order to realize the cross-interval loop debugging, in an optional implementation, the cross-interval loop includes a plurality of second single-interval loops, one of the second single-interval loops corresponds to one of the relay protection devices or one of the measurement and control devices, and the step S201 includes: a step S2013, under the condition that a plurality of the debugging instruments are respectively and one-to-one connected with the merging units and the intelligent terminals of a plurality of the second single-interval loops through wired communication connection, the debugging host is respectively connected with a plurality of the debugging instruments through wireless connection; and the step S202 includes: a step S2023, the debugging host synchronously sends the debugging instructions to a plurality of the debugging instruments, so that a plurality of the debugging instruments synchronously generate the corresponding simulation signals, so that the simulation signals are sent to the corresponding relay protection devices or the measurement and control devices through the merging units, and the relay protection devices or the measurement and control devices sequentially feed back the action time to the debugging host through the intelligent terminals and the debugging instruments, to complete the debugging of the cross-interval loop.

[0113] In the above implementation, the so-called cross-interval networked debugging refers to simultaneously debugging the functions of a plurality of intervals which are independent and configured identically, and the most common one is the cross-interval debugging of the line protections configured identically. All the line protections connected to one bus are almost the same in the loop and device configuration. For the whole station power-off maintenance or the whole loop integrity test in the stage of the infrastructure acceptance, if the debugging is performed one by one, a lot of time will be wasted. The cross-interval networked debugging simultaneously debugs the relay protection loops of all the intervals, which can greatly save the working time and improve the working efficiency. Taking the relay protection loop integrity test of 3 lines as an example, the working principle of the cross-interval networked debugging scheme is as follows. Figure 11As shown. Each line interval is configured with a microcomputer relay protection calibrator, which is connected to the merging unit and intelligent terminal respectively according to the correct wiring mode, for sending analog circuit voltage and receiving action information feedback. The bus merging unit is configured with a microcomputer relay protection tester, and the bus merging unit and each interval merging unit communicate data in a cascading manner. If the integrity of each interval relay protection circuit is tested one by one, three repeated tests are required, and three people are needed each time, one person is located at the indoor protection screen to check the relay protection device, and the other two people are located at the bus merging unit and interval merging unit respectively to operate the calibrator, which cannot guarantee the simultaneity and effectiveness of the test operation, and increases the workload. The cross-interval networked commissioning scheme can simultaneously test the integrity of multiple unrelated interval relay protection circuits by one person, greatly saving the labor cost and working time, and significantly improving the work efficiency. Similarly, the safety isolation device is added between the debugging host and the microcomputer relay protection calibrator in the present scheme. The cross-interval networked commissioning scheme can be further popularized to the debugging of double-configuration line protection, bus protection and main transformer protection devices, because the double-configuration relay protection is almost the same in terms of circuit and setting value, and a large amount of time will be wasted if the devices are debugged one by one, especially in the stage of full-station power-off maintenance or construction acceptance. Simultaneous debugging of two sets of protection circuits can save one time.

[0114] The working principle of the secondary system networked commissioning scheme of the intelligent station is described above, and it can be known from the working principle diagram of the networked commissioning scheme under various conditions that the essence of any networked commissioning scheme is to simultaneously control multiple relay protection calibrators by a debugging host. The networked commissioning scheme does not need to add too many hardware devices, only needs to add a debugging host and a communication gateway, and the hardware investment is less. The key to the implementation of the networked commissioning scheme lies in the design of the local area network connecting the microcomputer relay protection calibrators. In this section, the wireless network communication is researched, and the design method of the local area network of the networked commissioning scheme is finally determined.

[0115] The application of wireless network requires that the device itself has wireless network function, but the commonly used microcomputer relay protection calibrator does not have wireless communication function. Two solutions are proposed in the present application, the first one is to realize the wireless communication of the tester by using the wireless communication function of the notebook computer, and the second one is to configure the wireless communication program and wireless communication module for the calibrator. The two solutions will be researched one by one as follows.

[0116] In order to realize networking, in an optional implementation, in the case that the above debugging instrument does not have wireless function, the step S201 comprises:

[0117] In step S2014, a wired communication connection is established between the above debugging instrument and the wireless device one by one;

[0118] Step S2015, each wireless device is connected to the debugging host.

[0119] In the above embodiment, the wireless device can be a notebook computer, and can also be other devices with wireless function. Each calibration instrument is configured with a notebook computer, and the calibration instrument and the notebook computer are connected through a twisted pair. Then, one high-power wireless router is arranged in the device area, all computers are connected to the router, and finally the indoor debugging host is also connected to the router to form a wireless LAN. The debugging host realizes remote operation of all test instruments through the wireless network. As shown in the figure, this scheme no longer needs to lay special communication media, and completely adopts the form of wireless network for data communication, further enhancing the flexibility of device arrangement. However, since each relay protection calibration instrument needs to be configured with a notebook computer as a debugging computer to realize wireless network communication, the cost of debugging and calibration is increased to some extent. Figure 12

[0120] In order to realize networking, in an optional embodiment, in the case that the above debugging instrument does not have wireless function, the step S201 includes:

[0121] Step S2016, a wireless module is arranged on the above debugging instrument;

[0122] Step S2017, the wireless module of each debugging instrument is connected to the debugging host.

[0123] In the above embodiment, the wireless communication program and the wireless control module of the microcomputer relay protection calibration instrument are jointly developed with the manufacturer, and an internal wireless control module or an external wireless control module can be adopted. An internal wireless control module is designed to realize the wireless control function of the microcomputer relay protection calibration instrument, and the basic structure is as shown in the figure. Figure 13 Figure 13 ​​As shown, the built-in wireless control module mainly includes a wifi module, an STC12C5A60S2 single-chip microcomputer control module, a drive control unit, and a power module. The wifi module adopts an ESP8266 serial wifi wireless module and runs in an AP mode, so that it can be accessed and connected and data can be transmitted through a wifi control software on a notebook computer. The STC12C5A60S2 single-chip microcomputer control module is connected with the wifi module through a serial port to realize real-time communication with the wifi module, and the remaining IO general ports are connected with the drive control unit after being isolated by an optical coupler. The drive control unit is connected with a program starting unit of the microcomputer relay protection calibrator to control the calibrator. After the modification, the microcomputer relay protection calibrator will have a wireless control function. In the whole station range, a high-power wireless router is configured, each merging unit of the loop to be debugged is configured with a modified microcomputer relay protection calibrator, and a debugging host with the wireless control function is configured indoors, so as to form a debugging local area network based on wifi communication. The specific working principle of the scheme is shown in Figure 14 As shown in Figure 14 It can be known from the analysis that the scheme no longer needs to configure a notebook computer as a debugging computer for each relay protection calibrator, and does not need any network wiring, so that the form is more simple and flexible, and can be flexibly adjusted at any time according to the field conditions, but the scheme needs to develop a wireless control module for the relay protection calibrator.

[0124] It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a group of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0125] The embodiment of the present application also provides a networking and joint debugging device of a digitalized transformer substation. It should be noted that the networking and joint debugging device of the digitalized transformer substation of the embodiment of the present application can be used to execute the networking and joint debugging method for the digitalized transformer substation provided by the embodiment of the present application. The device is used to realize the above-mentioned embodiment and preferred embodiment, and will not be described here. As used below, the term "module" can be a combination of software and / or hardware that realizes a predetermined function. Although the device described in the following embodiment is preferably realized in software, the realization of hardware or a combination of software and hardware is also possible and conceived.

[0126] The networking and joint debugging device of the digitalized transformer substation provided by the embodiment of the present application is introduced below. The digitalized transformer substation includes a mutual inductor, a merging unit, an intelligent terminal, and secondary equipment. The secondary equipment includes a relay protection device and a measurement and control device. The merging unit and the intelligent terminal are both in communication connection with the secondary equipment.

[0127] Figure 15 is a structural block diagram of a networking and joint debugging device of a digitalized transformer substation according to an embodiment of the present application. As shown in the figure, the device comprises: Figure 15

[0128] a building unit 10, for establishing a wireless connection between a debugging host and at least one debugging instrument in a case that the at least one debugging instrument respectively establishes a wired communication connection with the above-mentioned merging unit to be debugged and the above-mentioned intelligent terminal to be debugged, the above-mentioned debugging instrument being used to generate the simulation signal of the above-mentioned mutual inductor;

[0129] a sending unit 20, for synchronously sending a debugging instruction from the above-mentioned debugging host to the above-mentioned at least one debugging instrument, so that the above-mentioned at least one debugging instrument synchronously generates the corresponding above-mentioned simulation signal, so that the above-mentioned simulation signal is sent to the corresponding above-mentioned relay protection device or the above-mentioned measurement and control device through the above-mentioned merging unit, and the above-mentioned relay protection device or the above-mentioned measurement and control device feeds back the action time to the above-mentioned debugging host in turn through the above-mentioned intelligent terminal and the above-mentioned debugging instrument, to complete the full loop debugging.

[0130] In the above-mentioned networking and joint debugging device, the at least one debugging instrument is connected with the merging unit to be debugged and the intelligent terminal to be debugged respectively, and then the debugging host establishes a wireless connection with the at least one debugging instrument, so that the debugging host can synchronously control the debugging instrument to generate the corresponding simulation signal, so that the simulation signal is sent to the corresponding relay protection device or measurement and control device through the merging unit, the relay protection device or measurement and control device feeds back the action time to the debugging host in turn through the intelligent terminal and the debugging instrument, the action time of the debugging host is compared with the actual action time of the relay protection device or measurement and control device, and the full loop debugging is completed, without the need of multiple persons to cooperate, one person to control the debugging host and view the relay protection device or measurement and control device, and multiple persons to control the debugging instrument, thus solving the problem of wasting manpower in the debugging work of the digitalized transformer substation in the prior art.

[0131] The loop debugging of the intelligent transformer substation comprises local loop debugging and full loop debugging.

[0132] The local loop debugging is the debugging performed on the loop of a certain area, such as the tripping loop of the relay protection device, the sampling loop of the measurement and control device, and even the on-off situation debugging of a certain optical fiber, etc. The local loop debugging is more applied in fault positioning and abnormal searching, etc., and the debugging range is gradually narrowed to finally find out the fault or abnormal situation.

[0133] ​The whole loop debugging refers to the global debugging from the starting point of sampling to the terminal of control. For the relay protection loop, it refers to starting from the secondary side of the current transformer and the voltage transformer, passing through the merging unit, the protection device, the intelligent terminal, and finally to the circuit breaker tripping. For the monitoring loop, it refers to starting from the secondary side of the current transformer and the voltage transformer, passing through the merging unit, the measurement and control device, the switch, the remote device, and finally to the control center. The whole loop debugging is most applied in the field of construction station acceptance and whole station power-off maintenance, and the work load of the whole loop debugging is huge.

[0134] Whether it is the whole loop debugging or the partial loop debugging, the focus of the debugging is often the "pass" and "not pass" of the loop, so only a reasonable value needs to be observed, which brings the possibility for the implementation of the networking and joint debugging scheme.

[0135] For the loop debugging, especially the whole loop debugging, the starting point of the debugging is the secondary side of the transformer, and the microcomputer relay protection calibrator needs to be used. Therefore, this section proposes a networking and joint debugging scheme for the whole loop debugging with the largest work load in the intelligent station. According to different objects, the networking and joint debugging scheme can be divided into three aspects: single interval networking debugging scheme, multi-interval networking debugging scheme, and cross-interval networking debugging scheme.

[0136] In order to realize the single interval loop debugging, in an optional implementation, the single interval loop includes the merging unit, the bus merging unit, the intelligent terminal, the relay protection device and the measurement and control device, the bus merging unit is in communication connection with the merging unit, and the establishing unit includes: a first establishing module, configured to establish wired communication connection between a first debugging instrument and the merging unit and the intelligent terminal, and establish wired communication connection between a second debugging instrument and the bus merging unit, and establish wireless connection between the debugging host and the first debugging instrument and the second debugging instrument; the sending unit includes: a first sending module, configured to synchronously send a debugging instruction to the first debugging instrument and the second debugging instrument by the debugging host, so that the first debugging instrument and the second debugging instrument synchronously generate corresponding simulation signals, and the simulation signals are sent to the corresponding relay protection device or measurement and control device through the merging unit, and the relay protection device or measurement and control device feeds back the action time to the debugging host through the intelligent terminal and the first debugging instrument in turn, to complete the debugging of the single interval loop.

[0137] In the above embodiments, from the "three layers and two networks" architecture of the secondary system of the smart substation, it can be seen that the relay protection device and the measurement and control device belong to the bay layer equipment and are located in the substation control room, while the merging unit and the intelligent terminal belong to the process layer equipment and are arranged in the control cabinet of the outdoor switchyard. For the relay protection device and the measurement and control device of a single bay (such as a line bay, a capacitor bay, a single side of a main transformer, etc.), in the conventional debugging mode, one person needs to check the device action at the indoor relay protection screen, and one person needs to operate the microcomputer relay protection tester to add analog quantity to the merging unit at the outdoor switchyard control cabinet, and then the two persons communicate through the intercom or mobile phone to operate the entire debugging process. This debugging mode will undoubtedly cause waste of manpower and resources, and at the same time, due to improper cooperation, it will cause repeated operation, excessive analog quantity, repeated tripping of circuit breakers, etc., which will cause great loss to the relay protection equipment and the switch equipment. The single-bay networking debugging refers to the full-loop networking debugging method for a single bay (such as a line bay, a capacitor bay, a single side of a main transformer, etc.), and the basic working principle is to use wireless communication technology to form a local area network with the secondary equipment such as the merging unit, the intelligent terminal, the relay protection device, the measurement and control device, etc. involved in the single bay, so as to realize single debugging. In order to better illustrate the working principle of the single-bay networking debugging, the most common debugging of the relay protection device and the measurement and control device is taken as an example for illustration, and the specific scheme is shown in Figure 8 A microcomputer relay protection tester is placed at the outdoor switchyard control cabinet, the tester is connected to the merging unit in the correct wiring mode to simulate the secondary side of the circuit mutual inductor to input analog quantity, and the tester is connected to the intelligent terminal in the correct wiring mode to collect feedback information such as the action time of the intelligent terminal. A mobile debugging host (a notebook computer, a tablet computer or a smart phone can be selected) is configured at the indoor relay protection screen, the debugging host is connected to the outdoor microcomputer relay protection tester through wireless network communication, the remote control of the outdoor microcomputer protection tester can be realized by controlling the debugging host, and the reliable debugging of the relay protection device or the measurement and control device by one person can be realized.

[0138] In addition, in order to ensure that the safety protection system of the secondary system in the smart station is not damaged, the communication gateway and other safety isolation devices are added between the debugging host and the microcomputer relay protection tester in the scheme, which can effectively prevent malicious intrusion of viruses into the secondary system. From the Figure 8It can be known that when the relay protection device or the measurement and control device is debugged, the correct analog quantity needs to be added to the interval merging unit and the bus merging unit, the interval merging unit and the bus merging unit are not arranged in the same control cabinet, if the single interval relay protection device or the measurement and control device is debugged, at least one person needs to be arranged at the interval merging unit, the bus merging unit and the indoor relay protection screen, the simultaneity and effectiveness of the operation cannot be effectively guaranteed, and the waste of manpower and material resources is caused. The single interval networking debugging scheme is adopted, one person can realize the centralized and unified control of the whole debugging process, the simultaneity and effectiveness of the analog quantity input can be greatly improved, and the work efficiency is further provided.

[0139] In order to realize the multi-interval loop debugging, in an optional implementation, the multi-interval loop includes a plurality of first single-interval loops, the plurality of first single-interval loops share one relay protection device or share one measurement and control device, and the establishing unit includes a second establishing module configured to establish a wired communication connection between each of the plurality of debugging instruments and the merging unit and the intelligent terminal of each of the plurality of first single-interval loops, and establish a wireless connection between the debugging host and the plurality of debugging instruments.

[0140] In the above embodiments, the multiple interval relaying protection mainly includes bus protection, main transformer protection, etc. According to the "three-layer" two-network architecture of the intelligent station secondary system, the multiple intervals involved in the bus protection and the main transformer protection are often arranged dispersedly and far apart. In the conventional debugging mode, to realize the full loop debugging of the bus protection or the main transformer protection, it is necessary to connect tens or hundreds of meters of connecting lines, which on the one hand will cause the on-site wiring confusion, increase the work difficulty, increase the on-site safety hazards and dangerous points, and on the other hand, the long-distance wiring is easy to cause experimental data deviation and interference. This working mode is obviously unrealistic. Therefore, at present, the intelligent station generally adopts the single interval plus quantity mode for the full loop debugging of the main transformer protection and the bus protection, which cannot comprehensively simulate the actual fault situation. In order to overcome this problem, the full loop debugging of the multiple interval protection devices and the measurement and control devices is realized through networking. The so-called multiple interval networking debugging is a networking debugging mode for the multiple interval protection devices and the measurement and control devices of the main transformer and the bus. Its basic working principle is similar to that of the single interval networking debugging scheme, that is, using wireless communication technology, the secondary devices involved in the full loop debugging of the multiple interval protection and measurement and control of the main transformer, bus, etc. such as merging unit, intelligent terminal, protection device, measurement and control device, etc. are formed into a local area network, and one person realizes the full loop fault simulation.

[0141] The above multiple interval loops include a first multiple interval loop and a second multiple interval loop. The first multiple interval loop includes a single interval loop of the high voltage side of the main transformer, a single interval loop of the medium voltage side of the main transformer, and a single interval loop of the low voltage side of the main transformer. The relay protection device commonly used by the first multiple interval loop is a main transformer relay protection device. The second multiple interval loop includes two outgoing line interval loops, one main transformer interval loop, and one bus tie interval loop. The relay protection device commonly used by the second multiple interval loop is a bus protection device.

[0142] The working principle of the multiple interval networking debugging will be described in detail below by taking the debugging of the three-circle main transformer and the bus protection as examples.

[0143] (1) Main transformer protection networking debugging scheme:

[0144] The multiple interval networking debugging scheme of the single set protection of the three-circle main transformer is as follows: Figure 9The debugging of the main transformer relay protection device involves the circuit breakers of the three sides of the main transformer and the circuit breakers of the three sides of the bus, and three microcomputer relay protection check instruments need to be configured for each side, which are connected to the bus merging unit, the interval merging unit and the intelligent terminal and the bus intelligent terminal in the correct wiring mode respectively, for sending analog circuit voltage and receiving action information feedback. It can be analyzed that if the full-loop actual situation simulation debugging of the three sides of the main transformer is to be realized, a total of 9 microcomputer relay protection check instruments need to be connected, and the input of the analog quantity needs to be controlled at the same time, a total of 10 people are needed, one person is located at the indoor protection screen to check the relay protection device, and 9 people are located outdoors to operate the microcomputer relay protection check instrument, which cannot guarantee the simultaneity and effectiveness of the test operation. The multi-interval networking joint debugging scheme proposed in the application can remotely control the 9 outdoor microcomputer relay protection check instruments through wireless network communication by the indoor debugging host, and only one person is needed to realize the full-loop actual situation simulation debugging of the main transformer protection, which greatly saves the labor cost and improves the success rate of debugging and the simultaneity of data input. Similarly, the communication gateway and other safety isolation devices are added between the debugging host and the microcomputer relay protection check instrument to prevent malicious intrusion of viruses into the secondary system of the intelligent station.

[0145] (2) Bus protection networking joint debugging scheme:

[0146] Taking a common double-bus wiring as an example, assuming that the bus is connected to 2 outgoing interval, 1 main transformer interval and 1 bus tie interval, the networking joint debugging scheme of the bus protection is as shown in Figure 10 The debugging of the main transformer relay protection device involves the circuit breakers of the three sides of the main transformer and the circuit breakers of the three sides of the bus, and three microcomputer relay protection check instruments need to be configured for each side, which are connected to the bus merging unit, the interval merging unit and the intelligent terminal and the bus intelligent terminal in the correct wiring mode respectively, for sending analog circuit voltage and receiving action information feedback. It can be analyzed that if the full-loop actual situation simulation debugging of the three sides of the main transformer is to be realized, a total of 9 microcomputer relay protection check instruments need to be connected, and the input of the analog quantity needs to be controlled at the same time, a total of 10 people are needed, one person is located at the indoor protection screen to check the relay protection device, and 9 people are located outdoors to operate the microcomputer relay protection check instrument, which cannot guarantee the simultaneity and effectiveness of the test operation. The multi-interval networking joint debugging scheme proposed in the application can remotely control the 9 outdoor microcomputer relay protection check instruments through wireless network communication by the indoor debugging host, and only one person is needed to realize the full-loop actual situation simulation debugging of the main transformer protection, which greatly saves the labor cost and improves the success rate of debugging and the simultaneity of data input. Similarly, the communication gateway and other safety isolation devices are added between the debugging host and the microcomputer relay protection check instrument to prevent malicious intrusion of viruses into the secondary system of the intelligent station.

[0147] Figure 10 ​It can be known from the analysis that if the simulation debugging of the whole loop of the bus protection is to be realized, totally 5 microcomputer relay protection check instruments need to be connected, and with the increase of the interval, the check instruments to be connected will also increase. If all the check instruments are controlled to debug the bus protection at the same time, totally 6 persons are needed, one person is located at the indoor protection screen to check the relay protection device, and 5 persons are located at the outdoor microcomputer relay protection check instruments to operate, which cannot guarantee the simultaneity and effectiveness of the test operation. The multi-interval networked debugging scheme proposed in the application is adopted, the indoor debugging host remotely controls the 5 outdoor microcomputer relay protection check instruments through the wireless network communication mode, and only one person can realize the simulation debugging of the whole loop of the bus protection, which greatly saves the labor cost and can improve the success rate of the debugging and the simultaneity of the data input. Similarly, the communication gateway and other safety isolation devices are added between the debugging host and the microcomputer relay protection check instrument to prevent the malicious invasion of the virus to the secondary system of the intelligent station.

[0148] In order to realize the cross-interval loop debugging, in an optional implementation, the cross-interval loop includes a plurality of second single-interval loops, one of the second single-interval loops corresponds to one of the relay protection devices or one of the measurement and control devices, and the establishing unit includes: a third establishing module, configured to establish a wireless connection between the debugging host and the plurality of debugging instruments in the case that a plurality of the debugging instruments are respectively and one-to-one connected with the merging units and the intelligent terminals of the plurality of second single-interval loops through wired communication connection; and the sending unit includes: a third sending module, configured to synchronously send a debugging instruction to the plurality of debugging instruments by the debugging host, so that the plurality of debugging instruments synchronously generate corresponding simulation signals, the simulation signals are sent to the corresponding relay protection devices or measurement and control devices through the merging units, the relay protection devices or measurement and control devices sequentially feed back the action time to the debugging host through the intelligent terminals and the debugging instruments, and the debugging of the cross-interval loop is completed.

[0149] In the above implementation, the so-called cross-interval networked debugging refers to simultaneously debugging the functions of a plurality of intervals which are independent and configured identically, and the most common one is the cross-interval debugging of the line protections configured identically. All the line protections connected to one bus are almost the same in the loop and device configuration. For the whole station power-off maintenance or the whole loop integrity test in the stage of the infrastructure acceptance, if the debugging is performed one by one, a lot of time will be wasted. The cross-interval networked debugging simultaneously debugs the relay protection loops of all the intervals, which can greatly save the working time and improve the working efficiency. Taking the relay protection loop integrity test of 3 lines as an example, the working principle of the cross-interval networked debugging scheme is as follows. Figure 11As shown. Each line interval is configured with a microcomputer relay protection calibrator, which is connected to the merging unit and intelligent terminal respectively according to the correct wiring mode, for sending analog circuit voltage and receiving action information feedback. The bus merging unit is configured with a microcomputer relay protection tester, and the bus merging unit and each interval merging unit communicate data in a cascading manner. If the integrity of each interval relay protection circuit is tested one by one, three repeated tests are required, and three people are needed each time, one person is located at the indoor protection screen to check the relay protection device, and the other two people are located at the bus merging unit and interval merging unit respectively to operate the calibrator, which cannot guarantee the simultaneity and effectiveness of the test operation, and increases the workload. The cross-interval networked commissioning scheme can simultaneously test the integrity of multiple unrelated interval relay protection circuits by one person, greatly saving the labor cost and working time, and significantly improving the work efficiency. Similarly, the safety isolation device is added between the debugging host and the microcomputer relay protection calibrator in the present scheme. The cross-interval networked commissioning scheme can be further popularized to the debugging of double-configuration line protection, bus protection and main transformer protection devices, because the double-configuration relay protection is almost the same in terms of circuit and setting value, and a large amount of time will be wasted if the devices are debugged one by one, especially in the stage of full-station power-off maintenance or construction acceptance. Simultaneous debugging of two sets of protection circuits can save one time.

[0150] The working principle of the secondary system networked commissioning scheme of the intelligent station is described above, and it can be known from the working principle diagram of the networked commissioning scheme under various conditions that the essence of any networked commissioning scheme is to simultaneously control multiple relay protection calibrators by a debugging host. The networked commissioning scheme does not need to add too many hardware devices, only needs to add a debugging host and a communication gateway, and the hardware investment is less. The key to the implementation of the networked commissioning scheme lies in the design of the local area network connecting the microcomputer relay protection calibrators. In this section, the wireless network communication is researched, and the design method of the local area network of the networked commissioning scheme is finally determined.

[0151] The application of wireless network requires that the device itself has wireless network function, but the commonly used microcomputer relay protection calibrator does not have wireless communication function. Two solutions are proposed in the present application, the first one is to realize the wireless communication of the tester by using the wireless communication function of the notebook computer, and the second one is to configure the wireless communication program and wireless communication module for the calibrator. The two solutions will be researched one by one.

[0152] In order to realize networking, in an optional implementation manner, in the case that the above debugging instrument does not have wireless function, the above establishing unit comprises:

[0153] A first establishing module, configured to establish a wired communication connection between the above debugging instrument and the wireless device one by one;

[0154] A fifth establishing module is configured to establish a wireless connection between each of the wireless devices and the debugging host.

[0155] In the above embodiment, the wireless device can be a notebook computer, and can also be other devices with wireless function. Each calibration instrument is configured with a notebook computer, and the calibration instrument and the notebook computer are connected through a twisted pair. One high-power wireless router is arranged in the device area, and all the computers are connected to the router. Finally, the indoor debugging host is also connected to the router to form a wireless local area network. The debugging host realizes remote operation of all the test instruments through the wireless network. Figure 12 As shown in FIG. 6, the scheme no longer needs to lay special communication media, and completely adopts the form of wireless network for data communication, further enhancing the flexibility of device arrangement. However, since each relay protection calibration instrument needs to be configured with a notebook computer as a debugging computer to realize wireless network communication, the cost of debugging calibration is increased to some extent.

[0156] In order to realize networking, in an optional embodiment, when the above debugging instrument does not have wireless function, the above establishing unit includes:

[0157] A sixth establishing module is configured to set a wireless module on the above debugging instrument.

[0158] A seventh establishing module is configured to establish a wireless connection between the wireless module of each of the above debugging instruments and the debugging host.

[0159] In the above embodiment, the wireless communication program and the wireless control module of the microcomputer relay protection calibration instrument are jointly developed with the manufacturer, and an internal wireless control module or an external wireless control module can be adopted. An internal wireless control module is designed to realize the wireless control function of the microcomputer relay protection calibration instrument, and the basic structure is as shown in FIG. 7. Figure 13 Figure 13 ​As shown, the built-in wireless control module mainly includes a wifi module, an STC12C5A60S2 single-chip microcomputer control module, a drive control unit and a power module. The wifi module adopts an ESP8266 serial wifi wireless module and runs in an AP mode, so that it can be accessed and connected and data transmission can be performed by using a wifi control software on a notebook computer. The serial port of the STC12C5A60S2 single-chip microcomputer control module is connected with the wifi module to realize real-time communication with the wifi module, and the remaining IO general ports are connected with the drive control unit after being isolated by an optical coupler. The drive control unit is connected with a program starting unit of the microcomputer relay protection calibrator to control the calibrator. After the modification, the microcomputer relay protection calibrator will have a wireless control function, one high-power wireless router is configured in the whole station, one modified microcomputer relay protection calibrator is configured at each merging unit of the loop to be debugged, and one debugging host with the wireless control function is configured indoors, so that a debugging LAN based on wifi communication is formed, and the specific working principle of the scheme is shown in Figure 14 As shown in Figure 14 It can be known from the analysis that the scheme no longer needs to configure a notebook computer as a debugging computer for each relay protection calibrator, and does not need any network wiring, and is more simple and flexible in form and can be flexibly adjusted at any time according to the field conditions, but the scheme needs to develop a wireless control module for the relay protection calibrator.

[0160] The networking and commissioning device of the digital substation includes a processor and a memory, the establishment unit and the sending unit and the like are stored in the memory as program units, and the corresponding functions are realized by the processor executing the program units stored in the memory. The modules are located in the same processor; or the modules are located in different processors in any combination.

[0161] The processor includes a core, and the core calls the corresponding program units from the memory. The core can be one or more, and the problem of wasting manpower in the debugging work of the digital substation in the prior art can be solved by adjusting the core parameters.

[0162] The memory can include a non-permanent memory in a computer readable medium, a random access memory (RAM) and / or a non-volatile memory such as a read-only memory (ROM) or a flash memory (flash RAM), and the memory includes at least one memory chip.

[0163] The embodiment of the application provides a computer readable storage medium, and the computer readable storage medium includes a stored program, wherein the program controls the device where the computer readable storage medium is located to execute the networking and commissioning method of the digital substation when the program runs.

[0164] Specifically, the networking and joint debugging method of the digital substation comprises the following steps:

[0165] In the case that at least one debugging instrument respectively establishes a wired communication connection with the above-mentioned merging unit to be debugged and the above-mentioned intelligent terminal to be debugged, the debugging host establishes a wireless connection with the above-mentioned at least one debugging instrument, and the above-mentioned debugging instrument is used to generate the simulation signal of the above-mentioned mutual inductor;

[0166] In the case that at least one debugging instrument respectively establishes a wired communication connection with the above-mentioned merging unit to be debugged and the above-mentioned intelligent terminal to be debugged, the debugging host establishes a wireless connection with the above-mentioned at least one debugging instrument, and the above-mentioned debugging instrument is used to generate the simulation signal of the above-mentioned mutual inductor;

[0167] The embodiment of the present application provides a processor, which is used for running a program, wherein the processor executes the networking and joint debugging method of the digital substation when the program is running.

[0168] Specifically, the networking and joint debugging method of the digital substation comprises the following steps:

[0169] In the case that at least one debugging instrument respectively establishes a wired communication connection with the above-mentioned merging unit to be debugged and the above-mentioned intelligent terminal to be debugged, the debugging host establishes a wireless connection with the above-mentioned at least one debugging instrument, and the above-mentioned debugging instrument is used to generate the simulation signal of the above-mentioned mutual inductor;

[0170] In the case that at least one debugging instrument respectively establishes a wired communication connection with the above-mentioned merging unit to be debugged and the above-mentioned intelligent terminal to be debugged, the debugging host establishes a wireless connection with the above-mentioned at least one debugging instrument, and the above-mentioned debugging instrument is used to generate the simulation signal of the above-mentioned mutual inductor;

[0171] The embodiment of the present application provides a device, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, and the processor executes the program to achieve at least the following steps:

[0172] In the case that at least one debugging instrument respectively establishes a wired communication connection with the above-mentioned merging unit to be debugged and the above-mentioned intelligent terminal to be debugged, the debugging host establishes a wireless connection with the above-mentioned at least one debugging instrument, and the above-mentioned debugging instrument is used to generate the simulation signal of the above-mentioned mutual inductor;

[0173] Step S202, the debugging host synchronously sends a debugging instruction to the at least one debugging instrument, so that the at least one debugging instrument synchronously generates a corresponding simulation signal, so that the simulation signal is sent to the corresponding relay protection device or the measurement and control device through the merging unit, and the relay protection device or the measurement and control device feeds back an action time to the debugging host through the intelligent terminal and the debugging instrument in turn, and full-loop debugging is completed.

[0174] The application also provides a computer program product adapted to execute a program comprising at least the following method steps when executed on a data processing device:

[0175] Step S201, in a case where at least one debugging instrument respectively establishes a wired communication connection with the merging unit to be debugged and the intelligent terminal to be debugged, a debugging host establishes a wireless connection with the at least one debugging instrument, and the debugging instrument is used to generate a simulation signal of the mutual inductor;

[0176] Step S202, the debugging host synchronously sends a debugging instruction to the at least one debugging instrument, so that the at least one debugging instrument synchronously generates a corresponding simulation signal, so that the simulation signal is sent to the corresponding relay protection device or the measurement and control device through the merging unit, and the relay protection device or the measurement and control device feeds back an action time to the debugging host through the intelligent terminal and the debugging instrument in turn, and full-loop debugging is completed.

[0177] The above only describes the preferred embodiments of the application and is not used to limit the application. Various changes and modifications can be made by those skilled in the art based on the principles and spirit of the application. Any modification, equivalent replacement, improvement, etc. made within the principles and spirit of the application should be included in the protection scope of the application.

Claims

1. A method for network-based commissioning of a digital substation, characterized in that, A digital substation includes instrument transformers, merging units, intelligent terminals, and secondary equipment. The secondary equipment includes relay protection devices and measurement and control devices. Both the merging units and the intelligent terminals are communicatively connected to the secondary equipment. The method includes: When at least one debugging instrument establishes a wired communication connection with the merging unit to be debugged and the smart terminal to be debugged respectively, the debugging host establishes a wireless connection with the at least one debugging instrument, and the debugging instrument is used to generate the simulation signal of the mutual inductor. The debugging host synchronously sends debugging instructions to the at least one debugging instrument, causing the at least one debugging instrument to synchronously generate the corresponding simulation signal. The simulation signal is then sent to the corresponding relay protection device or the measurement and control device through the merging unit. The relay protection device or the measurement and control device sequentially feeds back the action time to the debugging host through the smart terminal and the debugging instrument, thus completing the full circuit debugging.

2. The method according to claim 1, characterized in that, A single-bay circuit includes the merging unit, the bus merging unit, the intelligent terminal, the relay protection device, and the measurement and control device. The bus merging unit is communicatively connected to the merging unit. When at least one debugging instrument establishes a wired communication connection with both the merging unit to be debugged and the smart terminal to be debugged, the debugging host establishes a wireless connection with the at least one debugging instrument, including: When the first debugging instrument establishes a wired communication connection with the merging unit and the smart terminal respectively, and the second debugging instrument establishes a wired communication connection with the bus merging unit, the debugging host establishes a wireless connection with the first debugging instrument and the second debugging instrument respectively. The debugging host synchronously sends debugging commands to the at least one debugging instrument, causing the at least one debugging instrument to synchronously generate the corresponding simulation signal. The simulation signal is then sent to the corresponding relay protection device or the measurement and control device via the merging unit. The relay protection device or the measurement and control device sequentially feeds back the action time to the debugging host via the smart terminal and the debugging instrument, completing the full-circuit debugging, including: The debugging host synchronously sends debugging commands to the first debugging instrument and the second debugging instrument, causing the first debugging instrument and the second debugging instrument to synchronously generate the corresponding simulation signal. The simulation signal is then sent to the corresponding relay protection device or the measurement and control device through the merging unit. The relay protection device or the measurement and control device sequentially feeds back the action time to the debugging host through the smart terminal and the first debugging instrument, thus completing the debugging of the single-interval circuit.

3. The method according to claim 1, characterized in that, The multi-bay circuit includes multiple first single-bay circuits, which share one relay protection device or one measurement and control device. When at least one debugging instrument establishes a wired communication connection with both the merging unit to be debugged and the intelligent terminal to be debugged, the debugging host establishes a wireless connection with the at least one debugging instrument, including: When multiple debugging instruments establish wired communication connections with the merging units and smart terminals of the multiple first single-interval loops respectively, the debugging host establishes wireless connections with the multiple debugging instruments respectively. The debugging host synchronously sends debugging commands to the at least one debugging instrument, causing the at least one debugging instrument to synchronously generate the corresponding simulation signal. The simulation signal is then sent to the corresponding relay protection device or the measurement and control device via the merging unit. The relay protection device or the measurement and control device sequentially feeds back the action time to the debugging host via the smart terminal and the debugging instrument, completing the full-circuit debugging, including: The debugging host synchronously sends debugging commands to multiple debugging instruments, causing the multiple debugging instruments to synchronously generate corresponding simulation signals. The simulation signals are then sent to the relay protection device or the measurement and control device through the merging unit. The relay protection device or the measurement and control device sequentially feeds back the action time to the debugging host through the smart terminal and the debugging instruments, thus completing the debugging of the multi-interval circuit.

4. The method according to claim 3, characterized in that, The multi-bay circuit includes a first multi-bay circuit and a second multi-bay circuit. The first multi-bay circuit includes a single-bay circuit on the high-voltage side of the main transformer, a single-bay circuit on the medium-voltage side of the main transformer, and a single-bay circuit on the low-voltage side of the main transformer. The relay protection device shared by the first multi-bay circuit is the main transformer relay protection device. The second multi-bay circuit includes two outgoing line bay circuits, one main transformer bay circuit, and one bus tie bay circuit. The relay protection device shared by the second multi-bay circuit is the bus protection device.

5. The method according to claim 1, characterized in that, The cross-bay circuit includes multiple second single-bay circuits, and each second single-bay circuit corresponds to one of the relay protection devices or one of the measurement and control devices. When at least one debugging instrument establishes a wired communication connection with both the merging unit to be debugged and the smart terminal, the debugging host establishes a wireless connection with the at least one debugging instrument, including: With multiple debugging instruments establishing wired communication connections one-to-one with the merging units and smart terminals of the multiple second single-interval circuits, the debugging host establishes wireless connections with the multiple debugging instruments. The debugging host synchronously sends debugging commands to at least one debugging instrument, causing the at least one debugging instrument to synchronously generate the corresponding simulation signal. The simulation signal is then sent through the merging unit to the corresponding relay protection device or the measurement and control device. The relay protection device or the measurement and control device sequentially feeds back the action time to the debugging host through the smart terminal and the debugging instrument, completing the full-circuit debugging, including: The debugging host synchronously sends debugging commands to multiple debugging instruments, causing the multiple debugging instruments to synchronously generate corresponding simulation signals. The simulation signals are then sent to the corresponding relay protection device or measurement and control device through the merging unit. The relay protection device or measurement and control device sequentially feeds back the action time to the debugging host through the smart terminal and the debugging instrument, thus completing the debugging of the cross-interval circuit.

6. The method according to any one of claims 1 to 5, characterized in that, In the absence of wireless functionality in the debugging instrument, the debugging host establishes a wireless connection with at least one debugging instrument, including: Establish wired communication connections between the debugging instruments and the wireless devices in a one-to-one correspondence; Each of the wireless devices establishes a wireless connection with the debugging host.

7. The method according to any one of claims 1 to 5, characterized in that, In the absence of wireless functionality in the debugging instrument, the debugging host establishes a wireless connection with at least one debugging instrument, including: A wireless module is installed on the debugging instrument; The wireless modules of each of the aforementioned debugging instruments establish a wireless connection with the debugging host.

8. A network commissioning device for a digital substation, characterized in that, A digital substation includes instrument transformers, merging units, intelligent terminals, and secondary equipment. The secondary equipment includes relay protection devices and measurement and control devices. Both the merging units and the intelligent terminals are communicatively connected to the secondary equipment. The devices include: The setup unit is used to establish a wireless connection between the debugging host and the at least one debugging instrument when at least one debugging instrument establishes a wired communication connection with the merging unit to be debugged and the smart terminal to be debugged respectively. The debugging instrument is used to generate the simulation signal of the mutual inductor. The sending unit is used to synchronously send debugging instructions from the debugging host to the at least one debugging instrument, so that the at least one debugging instrument synchronously generates the corresponding simulation signal, and the simulation signal is sent to the corresponding relay protection device or the measurement and control device through the merging unit. The relay protection device or the measurement and control device sequentially feeds back the action time to the debugging host through the smart terminal and the debugging instrument to complete the full circuit debugging.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method according to any one of claims 1 to 7.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the method described in any one of claims 1 to 7.

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