A polymorphic defect automatic loading system and method for feeder automation training

Abstract

The present invention relates to a polymorphic defect automatic loading system and method for feeder automation training. The system includes a single-chip microcomputer and a communication fault port, a switch refusal / hesitation port, a PT disconnection port, a communication port, and a touch screen connected to the single-chip microcomputer; the communication fault port, the switch refusal / hesitation port, the PT disconnection port, and the communication port are connected to the secondary port of a distribution terminal device with feeder automation function to realize defects in different FA modes including communication interruption, switch refusal, switch hesitation, PT disconnection, and switch maintenance status. The present invention can simulate on-site defects existing in the actual operation environment of a distribution network, reproduce different on-site defect conditions, verify the impact of different defects on the FA function logic, and carry out operation and maintenance training on FA-related defect troubleshooting and fault recovery.

Description

Technical Field

[0001] The present invention belongs to the technical field of feeder automation, and particularly relates to a polymorphic defect automatic loading system and method for feeder automation training. Background Art

[0002] With the development of social economy and the rapid progress of productivity, the demand of power supply users for power supply reliability is continuously increasing. Feeder automation (FA) is a technical means to effectively improve power supply reliability and shorten power outage time, which has been widely concerned in the field of distribution network technology. The actual application of distribution automation terminal equipment with FA function in the distribution network site is becoming more and more extensive. Carrying out efficient and accurate operation and maintenance on a large number of distribution terminal equipment on site is a necessary means to ensure the normal operation of distribution terminal equipment and the reliable and stable operation of FA. The existing FA-related operation and maintenance training for distribution automation terminals mainly focuses on the learning and training of FA logic and algorithms, without considering that there are a large number of unstable factors in the actual operation environment of the distribution network site. Field defects such as terminal communication failure, PT disconnection, switch refusal to operate, switch slow movement, and maintenance hanging plate status will all affect the FA function of the distribution automation terminal. How to consider the impact of different on-site defect conditions on the FA function logic in FA operation and maintenance training, reproduce the on-site operation environment of the distribution network, and carry out targeted defect investigation and fault recovery operation and maintenance training has become the focus of current distribution automation terminal and FA operation and maintenance training. Summary of the Invention

[0003] The purpose of the present invention is to provide a polymorphic defect automatic loading system and method for feeder automation training, which is used to simulate the on-site defects existing in the actual operation environment of the distribution network site, reproduce different on-site defect conditions, verify the impact of different defects on the FA function logic, and carry out operation and maintenance training for FA-related defect investigation and fault recovery.

[0004] To achieve the above purpose, the technical solution of the present invention is:

[0005] The first aspect of the present invention provides a polymorphic defect automatic loading system for feeder automation training, which includes a communication failure port, a switch refusal / slow movement port, a PT disconnection port, a single-chip microcomputer, a communication port, and a touch screen.

[0006] Further, each port of the polymorphic defect automatic loading system is connected to the secondary port of the distribution terminal equipment with feeder automation function, and defects in different FA modes such as communication interruption, switch refusal to operate, switch slow movement, PT disconnection, and switch maintenance status can be realized.

[0007] Further, the polymorphic defect automatic loading system can be adapted to a variety of FA modes, including voltage-time type, voltage-current type, adaptive integrated type, intelligent distributed type, etc.

[0008] Furthermore, the polymorphic defect automatic loading system supports in-situ control and remote control. In-situ control can be operated through the system touch screen, and remote control can be achieved through the host computer management software using remote protocols, enabling automatic loading settings for FA defect scenarios.

[0009] The second aspect of the present invention provides a polymorphic defect automatic loading method for feeder automation training, which includes:

[0010] Connect the distribution terminal equipment with FA function for carrying out FA training to the polymorphic defect automatic loading system;

[0011] Set the FA interference factor parameters applied by the polymorphic defect automatic loading system through the FA training management software;

[0012] Run the FA function training cases through the FA training management software to simulate the fault operation of the distribution network;

[0013] After the simulated fault occurs in the distribution network, under the FA interference factors applied by the polymorphic defect automatic loading system, the training distribution terminal equipment performs corresponding actions;

[0014] Based on the action results of the distribution terminal FA function under different on-site defect interference factors, carry out defect troubleshooting and fault recovery operation and maintenance training for the distribution terminal equipment FA function.

[0015] Furthermore, the ports for connecting the above-mentioned distribution terminal equipment to the polymorphic defect automatic loading system include the terminal communication loop, switch remote control loop, PT acquisition loop, and maintenance remote signal loop.

[0016] Furthermore, the above-mentioned FA interference factors include terminal communication failure, switch refusal to operate, switch slow movement, PT disconnection, and maintenance status.

[0017] Furthermore, under the FA interference factors applied by the polymorphic defect automatic loading system, the possible action states of the distribution terminal equipment include correct action, expanding the fault range action, incorrect action, and non-action.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention can automatically load various influencing factors that affect the FA function under different FA modes; and provides a method and system for automatically loading polymorphic faults of FA. Considering the influence of interference factors brought by a large number of unstable factors in the actual on-site operation environment on the FA function logic, it can realize the true inversion and reproduction of fault scenarios in the actual on-site operation environment, display the correct and abnormal action results of FA under different fault influences, carry out FA fault troubleshooting and fault recovery training, improve the professional skills of on-site FA maintenance personnel, ensure the correct and stable operation of the FA function of distribution automation terminal equipment on the distribution network site, boost the practical construction level of the FA function, and improve the actual power supply reliability of the distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the polymorphic fault automatic loading system of the present invention.

[0021] Figure 2 It is the implementation steps of the polymorphic fault automatic loading method and system for feeder automation training of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] The main manifestation of the on-site application of FA technology is the application of distribution terminal equipment with FA function. In the actual on-site operation environment, the operation environment of distribution terminal equipment is not an ideal environment, and various interference situations may exist, which may affect the correctness and stability of the FA function. In order to test whether the FA function can operate correctly and stably under interference, and the processing ability of the FA function under different interference factors, the present invention proposes a polymorphic fault automatic loading system to realize adding various types of on-site fault interferences to the FA function of the training distribution terminal equipment, inversely reproducing and presenting the action results of the FA function of the distribution terminal equipment under different fault scenarios, and constructing a training scenario for fault troubleshooting and fault recovery for FA faults.

[0024] As Figure 1 shown is the schematic diagram of the polymorphic fault automatic loading system, which is characterized by including a communication signal input and output module, a PT signal input and output module, a terminal remote control input and output module, a maintenance status remote signal output module, a CPU control unit, a communication and maintenance network port, and a touch screen.

[0025] The communication signal input and output module consists of an RJ45 interface for communication signal input, an RJ45 interface for communication signal output, and a switching matrix. The communication network cable of the training power distribution terminal device is connected to the communication network switch after passing through the communication signal input interface and the communication signal output interface. When no communication defect is set, the communication signal input interface and the communication signal output interface are electrically connected normally, which has no impact on the communication of the power distribution terminal device; when setting communication defects according to the needs of the training scenario, the switching matrix can be controlled according to the set communication fault parameters to achieve states such as short-term interruption, long-term interruption, and intermittent interruption of the communication signal, simulating communication defects such as communication interruption and communication delay.

[0026] The PT signal input and output module consists of a PT signal input interface, a PT signal output interface, and a switching module. The secondary circuit of the PT of the corresponding primary switch of the training power distribution terminal device is connected to the PT signal input interface, and the PT signal output interface is connected to the voltage acquisition terminal of the training power distribution terminal device. When no PT disconnection defect is set, the PT signal input interface and the PT signal output interface are electrically connected normally, which has no impact on the voltage acquisition of the power distribution terminal device; when setting the PT disconnection defect according to the needs of the training scenario, the switching module is controlled according to the set PT disconnection defect to cut off one of the PT signal circuits, simulating the PT disconnection defect.

[0027] The terminal remote control input and output module consists of a terminal remote control input interface, a terminal remote control output interface, and a delay / shield control signal circuit. The remote control output signal of the training power distribution terminal device is connected to the terminal remote control input interface, and the terminal remote control output interface is connected to the remote control terminal of the corresponding primary switch to be measured of the power distribution terminal. The remote control output instruction of the terminal is connected to the input GPIO port of the CPU control unit through the level conversion circuit from the terminal remote control input port. After the CPU control unit collects the switch state, it outputs or shields the remote control instruction immediately or with a delay according to the set switch defect type, and then outputs it from the terminal remote control output interface to the remote control terminal of the primary switch, so as to realize the defect simulation of switch refusal to operate and switch slow movement.

[0028] The maintenance status remote signal output module includes a signal output drive module and a maintenance status remote signal output interface, which are connected to the maintenance status remote signal input terminal of the training power distribution terminal device. When setting the defect interference factor of the maintenance status, the maintenance status remote signal output interface outputs a closing signal, and the maintenance status remote signal collected by the power distribution terminal device is in the closing position. The power distribution terminal device will lock the internal remote control instruction, prohibit the protection, FA, and remote control actions, so that the FA action fails.

[0029] The CPU control unit is the core part of the entire system. A high-performance single-chip microcomputer is adopted. Under the control of the program, it controls the communication signal switching matrix to realize the on-off control of the communication input and output interfaces, thereby simulating communication defects; it collects the remote control output status of the training power distribution terminal equipment, and according to the set parameters, outputs immediately, outputs again after a delay or shields the output, simulating switch operation defects such as switch refusal to move and slow movement; by controlling the output signal of the maintenance status remote signal output interface, it simulates the influence of the maintenance status of the primary switch on the FA function.

[0030] The communication and maintenance network port is used for the host computer to conduct remote communication and maintenance with the multi-state defect automatic loading system, and realizes the remote control and parameter setting of the system functions.

[0031] The touch screen serves as the man-machine interface for local operation, and is used for operations such as parameter setting and FA defect setting locally in the multi-state defect automatic loading system.

[0032] As Figure 2 shown, the present invention also proposes a multi-state defect automatic loading method for feeder automation training, and its implementation steps are as follows:

[0033] Step S1: Connect the training power distribution terminal equipment with FA function to the multi-state defect automatic loading system. The circuits that need to be connected include:

[0034] The communication network cable of the training power distribution terminal equipment is connected to the system communication signal input interface, and the system communication signal output interface is connected to the communication network switch;

[0035] The secondary side circuit of the PT of the primary switch corresponding to the training power distribution terminal equipment is connected to the system PT signal input circuit, and the system PT signal output circuit is connected to the voltage acquisition circuit of the training power distribution terminal equipment;

[0036] The remote control output signal of the training power distribution terminal equipment is connected to the terminal remote control input interface, and the terminal remote control output interface is connected to the remote control terminal of the primary switch corresponding to the power distribution terminal to be tested;

[0037] The system maintenance status remote signal output interface is connected to the maintenance status remote signal input terminal of the training power distribution terminal equipment;

[0038] Step S2: Set the FA defect interference factor parameters applied by the multi-state defect automatic loading system. The defect parameters that can be set include:

[0039] When setting communication defects, communication short-term interruption, communication long-term interruption, and communication intermittence can be set;

[0040] When setting PT disconnection defects, phase A disconnection, phase B disconnection, and phase C disconnection can be set;

[0041] When setting switch operation defects, switch refusal to operate and switch slow operation can be set, and setting switch slow operation delay is supported;

[0042] When setting maintenance status defects, maintenance status input and exit can be set;

[0043] Step S3: Run the FA function test case, simulate the normal operation of the distribution network, and trigger the simulation of the distribution network short - circuit fault at the set moment;

[0044] After the simulated fault occurs in the distribution network, the distribution terminal equipment to be tested should start the corresponding FA action according to the data collected and communicated by itself. Under the FA defect interference imposed by the multi - state defect automatic loading system, the possible action results of the distribution terminal equipment include:

[0045] Correct action: The FA action logic and result are not affected by the FA defect interference, and the actions of fault isolation and non - fault line restoration are correctly completed;

[0046] Action to expand the fault range: The distribution terminal device reasonably expands the fault isolation range according to the FA defect interference situation it receives, and basically completes the actions of fault isolation and non - fault line restoration;

[0047] Incorrect action: The distribution terminal device executes an incorrect FA action under the FA defect interference and does not correctly complete the fault isolation and non - fault line restoration;

[0048] No action: The distribution terminal device does not start any FA action under the FA defect interference and does not complete the fault isolation and non - fault line restoration; <s

[0049] Step S5: According to the execution result of the FA function action of the training distribution terminal, carry out the operation and maintenance training of FA defect troubleshooting and fault recovery. After the fault recovery is completed, repeat the operation of Step S3 to re - simulate the distribution network fault. If the defect troubleshooting and recovery are correct, the FA action result of the training distribution terminal will be completely correct.

[0050] The above has described the disclosed embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the above - described embodiments. Even if various changes are made to the present invention, provided that these changes fall within the scope of the claims of the present invention and their equivalent technologies, they still fall within the protection scope of the present invention.

[0051] In summary, through a polymorphic defect automatic loading system and method for feeder automation training proposed by the present invention, the automatic simulation and loading of various on-site environmental defect interference factors that affect the FA action logic and results are realized. It can be applied to various FA mode types, and truly invert and reproduce the on-site defects that affect the correct action of the FA function in the actual operation environment of the distribution network. It demonstrates the correct actions and abnormal action results of the distribution automation terminal under different defect conditions and different FA mode types, conducts FA defect troubleshooting and fault recovery training, actually improves the professional skill level of FA on-site operation and maintenance personnel, enhances the training efficiency and training effect, and has practical value that can be promoted.

[0052] The above are the preferred embodiments of the present invention. Any changes made according to the technical solution of the present invention that do not exceed the scope of the technical solution of the present invention in terms of the functions and effects produced belong to the protection scope of the present invention.

Claims

1. A polymorphic defect automatic loading system for feeder automation training, characterized in that, It includes a single-chip microcomputer and communication fault ports, switch refusal / slow movement ports, PT disconnection ports, communication ports, and a touch screen connected to the single-chip microcomputer; the communication fault ports, switch refusal / slow movement ports, PT disconnection ports, and communication ports are connected to the secondary ports of a distribution terminal device with feeder automation function to realize defects in different FA modes including communication interruption, switch refusal, switch slow movement, PT disconnection, and switch maintenance status. The communication fault port consists of a communication signal input interface, a communication signal output interface, and a switching matrix. The communication network cable of the training distribution terminal device is connected to a communication network switch after passing through the communication signal input interface and the communication signal output interface; the PT disconnection port consists of a PT signal input interface, a PT signal output interface, and a switching module. The secondary side circuit of the PT corresponding to the primary switch of the training distribution terminal device is connected to the PT signal input interface, and the PT signal output interface is connected to the voltage acquisition terminal of the training distribution terminal device; the switch refusal / slow movement port consists of a terminal remote control input interface, a terminal remote control output interface, and a delay / shield control signal loop. The remote control output signal of the training distribution terminal device is connected to the terminal remote control input interface, and the terminal remote control output interface is connected to the remote control terminal of the primary switch corresponding to the distribution terminal to be tested; the communication port is used for remote communication and maintenance between the upper computer and the system to realize remote control and parameter setting of functions; the touch screen serves as a man-machine interface for local operation and is used for local parameter setting and FA defect setting operations.

2. The polymorphic defect automatic loading system for feeder automation training according to claim 1, characterized in that, The system can adapt to various FA modes, including voltage-time type, voltage-current type, adaptive integrated type, and intelligent distributed type.

3. The polymorphic defect automatic loading system for feeder automation training according to claim 1, characterized in that, The system supports local control and remote control. Local control is operated through the touch screen, and remote control is controlled through the upper computer management software via a remote protocol to realize automatic loading and setting of FA defect scenarios.

4. A polymorphic defect automatic loading system for feeder automation training according to claim 1, characterized in that, When no communication defect is set, the communication signal input interface and the communication signal output interface are electrically connected normally, which has no impact on the communication of the distribution terminal device; when a communication defect needs to be set according to the training scenario, the switching matrix is controlled according to the set communication fault parameters to realize states of communication signals including short-time interruption, long-time interruption, and intermittent interruption, and simulate communication defects including communication interruption and communication delay.

5. The polymorphic defect automatic loading system for feeder automation training according to claim 1, characterized in that When no PT disconnection defect is set, the PT signal input interface and the PT signal output interface are electrically connected normally, which has no impact on the voltage acquisition of the distribution terminal device; when a PT disconnection defect needs to be set according to the training scenario, the switching matrix is controlled according to the set PT disconnection defect to cut off one of the PT signal circuits and simulate the PT disconnection defect.

6. The polymorphic defect automatic loading system for feeder automation training according to claim 1, wherein The remote control output instruction of the terminal is connected to the single-chip microcomputer through a level conversion circuit from the terminal remote control input port. After the single-chip microcomputer acquires the switch state, it immediately, delay-exports, or shields and outputs the remote control instruction according to the set switch defect type, and then outputs it from the terminal remote control output interface to the remote control terminal of the primary switch, so as to realize the defect simulation of switch refusal and switch slow movement.

7. A polymorphic defect automatic loading method for feeder automation training, characterized in that, It includes the following steps: Step S1: Connect the training power distribution terminal device with FA function to the system described in Claim 1. The circuits to be connected include: The communication network cable of the training power distribution terminal device is connected to the communication signal input interface, and the communication signal output interface is connected to the communication network switch; The primary switch PT secondary side circuit corresponding to the training power distribution terminal device is connected to the PT signal input circuit, and the PT signal output circuit is connected to the voltage acquisition circuit of the training power distribution terminal device; The remote control output signal of the training power distribution terminal device is connected to the terminal remote control input interface, and the terminal remote control output interface is connected to the remote control terminal of the primary switch corresponding to the power distribution terminal to be tested; The system maintenance status remote signal output interface is connected to the maintenance status remote signal input terminal of the training power distribution terminal device; Step S2: Set the FA defect interference factor parameters applied by the system. The set defect parameters include: When setting communication defects, set short-term communication interruption, long-term communication interruption, and intermittent communication; When setting PT disconnection defects, set phase A disconnection, phase B disconnection, and phase C disconnection; When setting switch action defects, set switch refusal to act, switch slow action, and support setting switch slow action delay; When setting maintenance status defects, set maintenance status input and exit; Step S3: Run the FA function test case, simulate the normal operation of the distribution network, and trigger the simulation of the distribution network short-circuit fault at the set time; Step S4: After the simulated fault of the distribution network occurs, the power distribution terminal device to be tested should start the corresponding FA action according to the data collected and communicated by itself. Under the FA defect interference applied by the system, the possible action results of the power distribution terminal device include: Correct action, the FA action logic and result are not affected by the FA defect interference, and the actions of fault isolation and non-fault line restoration are correctly completed; Expand the fault range action, the power distribution terminal device reasonably expands the fault isolation range according to the FA defect interference situation it receives, and basically completes the actions of fault isolation and non-fault line restoration; Incorrect action, the power distribution terminal device executes an incorrect FA action under the FA defect interference and does not correctly complete the fault isolation and non-fault line restoration; No action, the power distribution terminal device does not start any FA action under the FA defect interference and does not complete the fault isolation and non-fault line restoration; Step S5: According to the execution result of the FA function action of the training power distribution terminal, carry out the operation and maintenance training of FA defect troubleshooting and fault restoration. After the fault restoration is completed, repeat the operation in Step S3 to re-simulate the distribution network fault. If the defect troubleshooting and restoration are correct, the FA action result of the training power distribution terminal will be completely correct.

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