CN213517375U - Distributed terminal double-loop network self-healing transfer detection system - Google Patents

Abstract

The utility model provides a distributed terminal double-loop network self-healing transfer detection system, which comprises a relay protection testing device; the double-loop network simulation system is used for installing at least one distributed terminal device and a simulation switch corresponding to the distributed terminal device; the fault simulation operating system is used for carrying out fault simulation according to the fault simulation instruction and applying a corresponding fault current signal and/or a corresponding fault voltage signal to the double-ring network simulation system; and the fault simulation demonstration system is respectively in communication connection with the double-loop network simulation system and the relay protection testing device. The utility model discloses can simulate various trouble under the dicyclo net environment, and can carry out the joint test to many terminals to show directly perceivedly and change the confession result, can reduce distributed DTU's the test degree of difficulty, shorten test cycle, improve the degree of discernment of test result.

Description

Distributed terminal double-loop network self-healing transfer detection system

Technical Field

The utility model relates to a distribution network automation technical field especially relates to a distributed terminal dicyclo net self-healing changes supplies detecting system.

Background

In some industrial areas related to military industry, medical treatment and the like and having high reliability on power utilization, a power distribution network is generally required to be designed into a dual-ring network architecture, when a fault occurs, a distribution network system can accurately isolate the fault and timely transfer important loads to normal lines for power supply so as to achieve the purpose of self-healing.

The traditional mainstream self-healing transfer supply mode generally sends power grid data collected by terminal equipment in a switching station to a power distribution main station, after a fault occurs, the main station generates a transfer supply strategy, and after the fault is confirmed by a dispatcher, the on-site switch is remotely controlled to recover power supply of a power failure area. The scheme has the biggest characteristics that: because the main station generates the switching strategy, the on-site terminal equipment only needs to provide fault data, so the requirement on the terminal is low, the realization is easy, and the on-site debugging is simple. However, the scheme has to rely on remote communication, and the supply needs to be confirmed manually, so that the timeliness and stability of the supply are poor, important loads are in a power failure state for a long time, and immeasurable loss is caused.

With the great push of the southern power grid to the distributed DTU project, a more advanced scheme is to isolate the fault by the distributed DTU and then transfer the fault to the local. Because the scheme completes the switching through the local interconnection networking communication of the terminal equipment without the remote master station and human intervention, the switching timeliness can be greatly improved, and the switching time can be basically controlled within 5 seconds. However, the scheme has high design requirements on the terminal equipment, and before commissioning, the distributed DTUs need to be subjected to simulation testing according to the characteristics of the double-loop network, and the transfer result of the distributed DTUs is observed. Because the double-ring network grid structure is relatively complex, the possible places of faults are more, each possible fault point needs to be systematically tested once, whether the distributed system can successfully isolate the faults is judged, and the supply transfer strategy needs to be dynamically adjusted according to incoming line loads, so that if a single-point test is carried out by using a traditional method, the test process is very complicated, and the test period is quite long.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a can simulate various trouble under the dicyclo net environment, and can carry out the joint test to many terminals to show directly perceivedly and change the distributed terminal dicyclo net self-healing who supplies the result and change and supply detecting system.

In order to achieve the main purpose, the utility model provides a distributed terminal double loop network self-healing transfer detection system, which comprises a relay protection testing device; the double-loop network simulation system is used for installing at least one distributed terminal device and a simulation switch corresponding to the distributed terminal device; the fault simulation operating system is used for carrying out fault simulation according to the fault simulation instruction and applying a corresponding fault current signal and/or a corresponding fault voltage signal to the double-ring network simulation system; and the fault simulation demonstration system is respectively in communication connection with the double-loop network simulation system and the relay protection testing device.

In a further scheme, the double-loop network simulation system comprises a first cabinet body, wherein a primary simulation diagram display and operation panel is arranged on the front face of the first cabinet body, a double-loop network primary simulation circuit is arranged in the first cabinet body, and the primary simulation diagram display and operation panel is electrically connected with the double-loop network primary simulation circuit.

In a further aspect, the dual-ring network primary analog circuit includes an integrated management communication unit, at least one of the distributed terminal devices connected to the integrated management communication unit, and the analog switch performing bidirectional communication with the distributed terminal devices.

In a further aspect, the fault simulation operation system includes a second cabinet, a fault simulation and operation panel is disposed on a front surface of the second cabinet, a fault simulation operation circuit is disposed in the second cabinet, and the fault simulation and operation panel is electrically connected to the fault simulation operation circuit.

In a further scheme, the fault simulation operation circuit comprises a first simple PLC, a second simple PLC, a double-loop network main loop, an analog switch LED, a lamp strip control loop and a relay protection instrument current interface, wherein the first simple PLC is respectively electrically connected with the double-loop network main loop, the second simple PLC and the analog switch LED, the second simple PLC is electrically connected with the lamp strip control loop, and the double-loop network main loop is electrically connected with the relay protection instrument current interface.

In a further scheme, the analog switch of the double-ring network analog system is electrically connected with the fault analog operation system through a normally open contact and a current interface of the analog switch.

In a further scheme, the dual-ring network analog system outputs a switching signal of each analog switch and a current signal of each analog switch to the fault analog operation system through a normally open contact of the analog switch and a current interface of the distributed terminal equipment respectively.

In a further aspect, the current output terminal of the relay protection testing apparatus is electrically connected to a relay protection instrument current interface of the fault simulation operating system, and is configured to output a corresponding fault voltage signal and/or current signal to the fault simulation operating system.

Therefore, the utility model provides a distributed terminal double-ring network self-healing transfer supply detection system mainly comprises three major parts, namely a double-ring network simulation system, a fault simulation operation system and a fault simulation demonstration system, can be applied in an intuitive fault current application mode, can adapt to the initial topology conditions of multiple double-ring networks, and can conveniently test the conditions of multiple faults occurring simultaneously; the self-healing transfer effect of the distributed DTU on the double-loop network can be systematically verified, and the actual operation result of the distributed DTU on the double-loop network can be clearly displayed; repeated wiring and parameter setting can be avoided, process data of self-healing transfer and supply can be recorded, testing efficiency is improved, and meanwhile, developers can analyze self-healing transfer and supply logic conveniently.

Drawings

Fig. 1 is the utility model discloses a distributed terminal dicyclo net self-healing changes the schematic diagram that supplies detecting system embodiment.

Fig. 2 is the utility model discloses a distributed terminal dicyclo net self-healing changes circuit schematic diagram that supplies detecting system embodiment.

Fig. 3 is the utility model discloses a distributed terminal dicyclo net self-healing changes supplies detection system embodiment analog switch and distributed terminal equipment's schematic diagram.

Fig. 4 is the utility model discloses a distributed terminal dicyclo net self-healing changes supplies analog switch's circuit schematic diagram in the detecting system embodiment.

Fig. 5 is a block flow diagram of a self-healing transfer method applied in an embodiment of the distributed terminal dual-ring network self-healing transfer detection system of the present invention.

Fig. 6 is the utility model discloses a distributed terminal dicyclo net self-healing changes supplies operating system's schematic diagram of fault simulation in the detecting system embodiment.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Referring to fig. 1 and 2, the utility model discloses a distributed terminal dicyclo net self-healing supplies detecting system includes relay protection testing arrangement 10, dicyclo net analog system 20, fault simulation operating system 30 and fault simulation demonstration system 40.

In the present embodiment, the dual ring network analog system 20 is used for installing at least one distributed terminal device 22 and an analog switch 23 corresponding thereto.

The dual-ring network simulation system 20 includes a first cabinet, a primary simulation diagram display and operation panel is disposed on the front surface of the first cabinet, a dual-ring network primary simulation circuit is disposed in the first cabinet, and the primary simulation diagram display and operation panel is electrically connected to the dual-ring network primary simulation circuit.

The dual-ring network primary analog circuit includes an integrated management communication unit 21, at least one distributed terminal device 22 connected to the integrated management communication unit 21, and an analog switch 23 that performs bidirectional communication with the distributed terminal device 22. The distributed terminal device 22 of this embodiment is a distributed DTU, and transmits signals such as current and switch state between the analog switch 23 and the distributed DTU.

Specifically, the dual-ring network simulation system 20 of the present embodiment is a dual-ring network primary simulation screen, and is mainly used for installing the distributed terminal devices 22 and other matched tools and secondary wiring therebetween, and simultaneously displaying the position of each distributed terminal device 22 in the dual-ring network. On one hand, two groups of signals are led out for the fault simulation operation platform: a combiner/divider signal for each switch and a current signal for each switch; on the other hand, the fault simulation demonstration system 40 outputs communication signals of the distributed terminal equipment 22.

In this embodiment, the fault simulation operating system 30 performs fault simulation according to the fault simulation instruction, and applies a corresponding fault current signal and/or voltage signal to the dual-ring network simulation system 20.

The fault simulation operating system 30 includes a second cabinet, a fault simulation and operation panel is disposed on the front surface of the second cabinet, a fault simulation operation circuit is disposed in the second cabinet, and the fault simulation and operation panel is electrically connected to the fault simulation operation circuit.

Wherein, the fault simulation operation circuit includes first simple and easy PLC31, the simple and easy PLC32 of second, two ring net total return circuits 33, analog switch LED34, lamp area control circuit 35 and relay and protect appearance current interface 36, first simple and easy PLC31 respectively with two ring net total return circuits 33, the simple and easy PLC32 of second, analog switch LED34 electricity is connected, the simple and easy PLC32 of second is connected with lamp area control circuit 35 electricity, two ring net total return circuits 33 and relay and protect appearance current interface 36 electricity and be connected. The dual loop network 33 of this embodiment is a current control loop.

The analog switch 23 of the dual-ring network analog system 20 is electrically connected with the fault simulation operation system 30 through the normally open contact 1 and the current interface 2.

The dual-ring network analog system 20 outputs the on-off signal of each analog switch 23 and the current signal of each analog switch 23 to the fault analog operation system 30 through the normally open contact 1 and the current interface 2 of the analog switch 23, respectively.

The current output terminal 11 of the relay protection testing apparatus 10 is electrically connected to the relay protection instrument current interface 36 of the fault simulation operating system 30, and is configured to output a corresponding fault voltage signal and/or current signal to the fault simulation operating system 30.

Specifically, the fault simulation operation system 30 of the present embodiment is a fault simulation console, and is configured to apply fault current and voltage signals to a plurality of distributed terminal devices 22 corresponding to each fault at the same time, and show the actual operation states of the dual-ring network rack structure and the simulated dual-ring network, including the on-off state of the switch and the live-line condition of the line. The current and voltage signals of the relay protection test apparatus 10 can be applied to the plurality of distributed terminal devices 22 corresponding to the fault by simply performing a wiring operation on the console.

In this embodiment, the fault simulation demonstration system 40 is in communication connection with the dual-ring network simulation system 20 and the relay protection testing device 10, respectively.

Specifically, the fault simulation demonstration system 40 can communicate with the relay protection testing device 10 and the distributed terminal device 22 at the same time, and show the positions of fault points on the double-ring network in a configuration graph manner, only by clicking the fault points on the graph, the simulation system can control the relay protection testing device 10 to output current and voltage corresponding to the fault, check the network frame topological structure after corresponding time delay, and verify whether the distributed terminal device 22 performs self-healing transfer operation on the double-ring network as expected.

In practical applications, a pull-out type installation panel is designed near each analog switch 23 for embedded installation of the distributed terminal equipment 22. Two buttons for switching on and off are designed below the panel, three knob switches which are remote/local, conventional/intelligent, synchronous/reset, and five pressing plates for switching on and switching off outlets, tripping-off outlets, safety control, reclosing and overhauling states.

Specifically, the installation steps of the double-ring network simulation system 20 of the present embodiment are as follows:

1. the double-ring-network primary simulation screen main body uses a wooden main body frame, and an acrylic panel printed with a primary simulation picture is arranged on the front side of the double-ring-network primary simulation screen main body, such as a primary simulation picture display and operation panel.

2. An analog switch 23 tool is installed at a switch inside an analog screen (cabinet body), and the tool can simulate the switching-on and switching-off operation of the switch 23 and output a plurality of normally-open or normally-closed contacts.

3. The distributed terminal equipment 22 is installed on the primary analog screen and is connected with the analog switch 23 through a secondary line, so as to receive the on-off state of the analog switch 23 or control the on-off brake of the analog switch 23.

4. The a-phase current and the zero sequence current of each distributed terminal equipment 22 are led out to the fault simulation operating system 30 through a 2.5mm cable.

5. The normally open contact of each analog switch 23 is brought out to the fault simulation operating system 30 through a 1.0mm cable.

6. After the 485 communication interfaces of each distributed terminal device 22 are collected through the integrated communication unit, the 485 communication interfaces are led out to the fault simulation demonstration system 40 through the Ethernet.

In practical application, the fault simulation and operation panel of the fault simulation operation system 30 uses a full optical band acrylic simulation screen, and when the optical band is on, the circuit is electrified, and when the optical band is off, the circuit is electrified; the red brightness of the analog switch 23 indicates that the switch is switched on, and the green brightness of the analog switch 23 indicates that the switch is switched off.

Further, a simple PLC, such as the first simple PLC31, is used for controlling the on/off of the line light strip according to the switching state of the near power supply side. The first simple PLC31 is a transistor.

Further, a double-ring network main loop 33 tool is installed near each analog switch 23, and the tool can control the passing or the backflow of current according to the on-off state of the analog switch 23.

Further, the return terminals that draw current at the fault trigger the self-healing switching logic of the distributed termination device 22 by applying a fault signal (current voltage) at a particular fault point.

Specifically, the installation steps of the fault simulation operating system 30 of the present embodiment are:

1. and a double-ring network main loop 33 tool is arranged near the analog switch 23, and the tool is connected in series to the wiring loop according to a primary grid structure of the double-ring network.

2. And connecting the current and zero sequence signal lines into an analog signal terminal of the double-ring network main loop 33, and short-circuiting return terminals of all the double-ring network main loops 33.

3. And leading out the current output end of the double-loop network main loop 33 to a fault point of a primary simulation diagram.

4. The normally open contact signals of the connected group of analog switches 23 are expanded into three groups by a simple PLC provided with one transistor output.

5. The first switch combined and separated signal is connected to the analog switch LED34 lamp to control the color of the switch LED lamp, namely, the switch-on is bright red, and the switch-off is bright green.

6. And a second group of switch combining and separating signals are connected into the current control tool and used for controlling current guiding, namely, switching-on passing and switching-off backflow.

7. Through setting up the simple and easy PLC of a relay output, like the simple and easy PLC32 of second, with this PLC of third group switch combination signal access, insert lamp area control circuit 35 with relay output terminal simultaneously, this PLC controls the bright of lamp area and goes out according to the T type picture relation of the switching signal of writing and lamp area.

In practical application, the fault simulation demonstration system 40 is a software system, runs on a PC, collects the two-remote data of each distributed terminal device 22, records the two-remote data change in the self-healing transfer process in detail, shows the running data of the distributed terminal device 22 in a configuration graph manner, and can call the recording data of the terminal when necessary; and sending a fault current output instruction to the relay protection device through the Ethernet, triggering corresponding self-healing switching logic, and verifying a data result after set time.

Further, the fault simulation demonstration system 40 is connected to the integrated management communication unit 21 of the dual-ring network simulation system 20 and the relay protection testing device 10 through ethernet.

Further, when a mouse is used to click a fault trigger point on the demonstration system, the system sends a fault current output command to the relay protection testing device 10. Only the current output terminal 11 of the relay protection testing device 10 needs to be connected to the corresponding fault of the fault simulation operating system 30, and the corresponding fault isolation, i.e. the self-healing switching logic, can be triggered.

Further, the fault simulation demonstration system 40 collects the join-separate states of all switches on the dual-ring network in real time through the integrated communication unit of the dual-ring network simulation system 20, starts the topology detection logic of the dual-ring network after a short period of fault triggering, and verifies whether the distributed device terminal executes correct fault isolation and self-healing transfer operation after the fault.

Therefore, the utility model provides a distributed terminal double-ring network self-healing transfer supply detection system mainly comprises three major parts, namely a double-ring network simulation system 20, a fault simulation operation system 30 and a fault simulation demonstration system 40, can be applied in an intuitive fault current application mode, can adapt to the initial topology conditions of multiple double-ring networks, and can conveniently test the condition that multiple faults occur simultaneously; the self-healing transfer effect of the distributed DTU on the double-loop network can be systematically verified, and the actual operation result of the distributed DTU on the double-loop network can be clearly displayed; repeated wiring and parameter setting can be avoided, process data of self-healing transfer and supply can be recorded, testing efficiency is improved, and meanwhile, developers can analyze self-healing transfer and supply logic conveniently.

In addition, referring to fig. 3, fig. 3 is a schematic diagram of the connection of the analog switch 23 and the distributed terminal device 22, where the analog switch 23 is used for simulating a normal operation or a fault state of the distribution network switch to generate a corresponding switching value signal and/or a voltage current signal for communication with the distributed terminal device 22.

In fig. 3, the switch simulation device includes two simulation switches 23, a current input terminal, a voltage input terminal, and a current return terminal of the first simulation switch 23 are respectively connected to the relay protection test device 10, a current output terminal, a voltage output terminal, and a signal output terminal of the first simulation switch 23 are respectively connected to the current input terminal, the voltage terminal, and the switching value input terminal of the first distributed terminal device 22, a current output terminal and a voltage terminal of the first distributed terminal device 22 are connected to the current input terminal and the voltage input terminal of the second simulation switch 23, a current return terminal of the second simulation switch 23 is connected to the relay protection test device 10, a current output terminal, a voltage output terminal, and a signal output terminal of the second simulation switch 23 are respectively connected to the current input terminal, the voltage terminal, and the switching value input terminal of the second distributed terminal device 22, a current output terminal of the second distributed terminal device 22 is connected to the current return terminal of the second An apparatus 10. It is visible, the utility model discloses possess the electric current and concatenate the function, under the environment that carries out systematic network deployment test, need not many and keep appearance and add volume output current simultaneously continuing.

Of course, the number of the analog switches 23 in the present embodiment is two, but is not limited to two, and may also be three, four or more, and the specific number may be designed according to the actual needs of the user.

Referring to fig. 4, the analog switch 23 includes an on/off switching circuit, a tank circuit and an ac control circuit connected to each other.

In this embodiment, the switching-on/off operation circuit includes an operation circuit input terminal composed of an ac input terminal and a dc input terminal, an ac pre-circuit, a dc pre-circuit, an operation circuit, a display circuit, and a signal output terminal, where the ac input terminal is connected to the ac pre-circuit, the dc input terminal is connected to the dc pre-circuit, the ac pre-circuit and the dc pre-circuit are respectively connected to the operation circuit, and the operation circuit is respectively connected to the display circuit and the signal output terminal.

The operation loop comprises a double-pole holding relay RE2, switching-on and switching-off keys K1, K4 and rejection detection jumper terminals JP11 and JP12, the coil end of the double-pole holding relay RE2 is respectively connected with the switching-on and switching-off keys K1 and K4, the rejection detection jumper terminals JP11 and JP12 are connected, and anti-reverse diodes are further connected between the coil end of the double-pole holding relay RE2 and the switching-on and switching-off keys K1 and K4 and between the rejection detection jumper terminals JP11 and JP 12.

Two refusal action detection jumper terminals are respectively connected in series on the switching-on/off operation circuit, a jumper cap is arranged on the refusal action detection jumper terminal, and when the jumper cap is taken off, the operation circuit is disconnected to imitate the refusal action of the switch 23.

The alternating current front-end loop comprises a first current limiting resistor, a half-wave rectifying circuit and a first optical coupler, an alternating current input terminal sequentially passes through the first current limiting resistor, and the half-wave rectifying circuit and the first optical coupler are connected with a coil end of the double-pole holding relay RE 2.

The direct current front-end loop comprises a second current limiting resistor and a second optical coupler, and the direct current input terminal is connected with the coil end of the double-pole holding relay RE2 sequentially through the second current limiting resistor and the second optical coupler.

The display loop comprises a closing LED lamp D6 and an opening LED lamp D8, and the closing LED lamp D6 and the opening LED lamp D8 are respectively connected to a closing contact and an opening contact of the double-pole holding relay RE 2.

The signal output terminal comprises an on-off brake output terminal and an energy storage output terminal.

In this embodiment, the energy storage circuit includes a time-delay energy storage relay RE3, a first auxiliary relay J11, a second auxiliary relay J12, and a jumper terminal JP8 and a jumper cap for switching between manual and automatic energy storage, the time-delay energy storage relay RE3 is respectively connected with the first auxiliary relay J11 and the second auxiliary relay J12, a jumper terminal JP8 and a jumper cap for switching between manual and automatic energy storage are connected between the time-delay energy storage relay RE3 and the second auxiliary relay J12, and a manual energy storage key K3 and energy storage indicator lamps D9 and D10 are connected at a normally closed contact of the first auxiliary relay J11.

In the present embodiment, the ac control circuit includes an ac circuit terminal composed of a voltage terminal CO1 and a current terminal CO4, two single pole relays J8, J9, and two double pole relays J5, J6, the voltage terminal CO1 is connected to the two single pole relays J8, J9, respectively, and the current terminal CO4 is connected to the two double pole relays J5, J6, respectively.

Each single-pole relay is provided with two groups of contacts, the contacts of the single-pole relays are used for controlling the on-off of four groups of voltages, each double-pole relay is provided with two groups of contacts, and the contacts of the double-pole relays are used for controlling the passing and the backflow of four groups of currents.

The embodiment further provides a self-healing transfer method of the distributed terminal dual-ring network self-healing transfer detection system, where the distributed terminal dual-ring network self-healing transfer detection system adopts the above distributed terminal dual-ring network self-healing transfer detection system, and the method includes the following steps: triggering fault points of a configuration graph on a fault simulation demonstration system 40, controlling the relay protection testing device 10 by the fault simulation demonstration system 40 to output current and voltage corresponding to the fault points, applying fault current signals and/or voltage signals to a plurality of distributed terminal devices 22 of a double-ring network simulation system 20 corresponding to each fault point through a fault simulation operation system 30, triggering corresponding fault isolation, and displaying a double-ring network grid structure and simulating an actual operation state of a double-ring network. Wherein, the fault point of the configuration graph on the fault simulation demonstration system 40 can be a fault trigger button on the fault simulation demonstration system 40.

Further, before triggering the fault point of the configuration graph on the fault simulation demonstration system 40, the position of the fault point on the dual-ring network is shown on the display interface in the form of the configuration graph.

Further, after the fault simulation demonstration system 40 controls the relay protection testing device 10 to output the current and voltage corresponding to the fault point, the grid topology is checked after a time delay setting time, and whether the distributed terminal device 22 performs accurate self-healing transfer operation on the dual-ring network is verified.

Specifically, the fault simulation operation system 30 of the present embodiment is a fault simulation console, and is configured to apply fault current and voltage signals to a plurality of distributed terminal devices 22 corresponding to each fault at the same time, and show the actual operation states of the dual-ring network rack structure and the simulated dual-ring network, including the on-off state of the switch and the live-line condition of the line. The current and voltage signals of the relay protection test apparatus 10 can be applied to the plurality of distributed terminal devices 22 corresponding to the fault by simply performing a wiring operation on the console.

Specifically, the fault simulation demonstration system 40 of this embodiment can communicate with the relay protection device and the distributed terminal device 22 at the same time, and show the position of the fault point on the dual-ring network in the manner of the configuration graph, only needs to click the fault point on the graph, and the simulation system can control the relay protection testing device 10 to output the current and voltage corresponding to the fault, and check the network frame topology after corresponding delay, and verify whether the distributed terminal device 22 performs the self-healing transfer operation on the dual-ring network as expected.

In practical application, a preview flowchart of the self-healing transfer method of the embodiment is shown in fig. 5, and a current line is connected to a terminal at a simulated fault. Certainly, the current line needs to be connected in advance and inserted into a fault simulation operation platform, and if the fault of the F22 point needs to be simulated, the current line of the relay protection instrument is inserted into the corresponding wire inserting section.

Then, as shown in fig. 6, a corresponding fault icon is clicked, as shown as F22 in fig. 6, after the click, the fault simulation demonstration system 40 controls the relay protection testing device 10 to output a fault current, which specifically includes initial topology data before the total calling of the fault, full telemetry and remote signaling transmitted on the distributed DTU, the initial topology data before the fault is analyzed, the topology data after the fault removal, fault isolation and self-healing transfer are generated according to the initial topology and the fault point, and the fault current is output.

The distributed DTU performs fault removal action, and the state of the corresponding analog switch 23 is changed, such as color change of a switch indicator light, backflow of fault current at the disjunction position of the analog switch 23, simple PLC action and change of the indicating state of a circuit light belt. And then, uploading remote signaling and SOE by the distributed DTU, comparing the fault removal data and outputting a comparison result.

After the distributed DTU uploads the remote signaling and the SOE, the distributed DTU performs fault isolation operation, and the state of the corresponding analog switch 23 is changed, such as the color change of a switch indicator lamp, the simple PLC action and the indicating state change of a circuit light strip.

And then, uploading remote signaling and SOE by the distributed DTU, comparing fault isolation data and outputting a comparison result.

After the distributed DTU uploads remote signaling and SOE, the distributed DTU carries out self-healing transfer operation, and the state of the corresponding analog switch 23 is changed, such as the color change of a switch indicator lamp, the action of a simple PLC and the indication state change of a circuit lamp strip.

And then, uploading remote signaling and SOE by the distributed DTU, comparing the self-healing transfer data and outputting a comparison result.

And finally, the system judges whether deviation exists according to the comparison of the data sent by the distributed DTU and the expected topological structure data, and then pops up a corresponding prompt on a display screen of the system.

In the above steps, as long as the fault current is output, the fault isolation and self-healing switching logic of the distributed DTU is triggered, and the corresponding switch state is changed. The distributed DTU then sends these changes to the fault simulation demonstration system 40.

In the above steps, when the fault trigger button on the fault simulation demonstration system 40 is clicked, the system will generate an expected topology after fault according to the fault point clicked by the user and the current states of all switches.

Therefore, the utility model provides a method can simulate various trouble under the dicyclo net environment, and can jointly test many terminals to show directly perceivedly and change the confession result, greatly reduced distributed DTU's the test degree of difficulty, shortened test cycle, improved the degree of discernment of test result.

The foregoing describes the general principles of the present disclosure in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present disclosure are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present disclosure. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the disclosure is not intended to be limited to the specific details so described.

The block diagrams of devices, apparatuses, systems referred to in this disclosure are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It should be noted that the above is only the preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and all the insubstantial modifications made by using the design concept of the present invention also fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a distributed terminal dual ring network self-healing supplies detecting system that changes, its characterized in that includes:

a relay protection testing device;

the double-loop network simulation system is used for installing at least one distributed terminal device and a simulation switch corresponding to the distributed terminal device;

the fault simulation operating system is used for carrying out fault simulation according to the fault simulation instruction and applying a corresponding fault current signal and/or a corresponding fault voltage signal to the double-ring network simulation system;

and the fault simulation demonstration system is respectively in communication connection with the double-loop network simulation system and the relay protection testing device.

2. A self-healing transfer detection system according to claim 1, wherein:

the double-loop network simulation system comprises a first cabinet body, wherein a primary simulation diagram display and operation panel is arranged on the front surface of the first cabinet body, a double-loop network primary simulation circuit is arranged in the first cabinet body, and the primary simulation diagram display and operation panel is electrically connected with the double-loop network primary simulation circuit.

3. A self-healing transfer detection system according to claim 1, wherein:

the double-loop network primary analog circuit comprises a comprehensive management communication unit, at least one distributed terminal device connected with the comprehensive management communication unit, and the analog switch which is in bidirectional communication with the distributed terminal device.

4. A self-healing transfer detection system according to claim 1, wherein:

the fault simulation operation system comprises a second cabinet body, wherein a fault simulation and operation panel is arranged on the front face of the second cabinet body, a fault simulation operation circuit is arranged in the second cabinet body, and the fault simulation and operation panel is electrically connected with the fault simulation operation circuit.

5. The self-healing transfer detection system according to claim 4, wherein:

the fault simulation operation circuit comprises a first simple PLC, a second simple PLC, a double-ring network total loop, an analog switch LED, a lamp strip control loop and a relay protection instrument current interface, wherein the first simple PLC is respectively connected with the double-ring network total loop, the second simple PLC and the analog switch LED, the second simple PLC is electrically connected with the lamp strip control loop, and the double-ring network total loop is electrically connected with the relay protection instrument current interface.

6. The self-healing transfer detection system according to claim 5, wherein:

and the analog switch of the double-loop network analog system is electrically connected with the fault analog operation system through a normally open contact and a current interface of the analog switch.

7. A self-healing transfer detection system according to claim 6, wherein:

and the double-loop network simulation system outputs the combination and division signals of each analog switch and the current signals of each analog switch to the fault simulation operation system through the normally open contact of the analog switch and the current interface of the distributed terminal equipment respectively.

8. A self-healing transfer detection system according to claim 6, wherein:

and the current output terminal of the relay protection testing device is electrically connected with a relay protection instrument current interface of the fault simulation operating system and is used for outputting corresponding fault voltage signals and/or current signals to the fault simulation operating system.

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