Centralized intelligent anti-misoperation terminal and control method thereof

Abstract

The invention discloses a centralized intelligent anti-misoperation terminal and a control method thereof. The anti-misoperation terminal comprises an unlocking unit, a communication module and an input and output module which are respectively connected with an MCU (Microprogrammed Control Unit). According to the invention, the power system can be monitored and controlled in real time, and the switching operation is safe and controllable. When the anti-misoperation terminal receives an operation instruction issued by an anti-misoperation system or an internet-of-things platform, program unlocking of the interval equipment is achieved, the circuit breaker and the disconnecting link equipment can achieve opening and closing actions, and otherwise the circuit breaker, the disconnecting link, the net door and other equipment cannot be operated. According to the invention, a plurality of devices in a single interval or multiple intervals can be monitored and controlled in a centralized manner, the cost of the devices is reduced, the use and maintenance efficiency is improved, the states of the devices are uploaded to an Internet of Things platform and an anti-misoperation system, safety management and control are achieved, safety accidents caused by manual misoperation can be effectively avoided, and the working efficiency is improved. Personal, power grid and equipment safety is effectively guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of electric power Internet of Things and electric power safety technology, and in particular relates to a centralized intelligent error-proof terminal and a control method thereof. Background Art

[0002] The anti-error device is a locking device widely used in power systems. It is the most direct and effective technical measure to prevent electrical misoperation. The long-term, limitless and complex nature of production safety work determines that the anti-error locking device plays a pivotal role in the operation of the power system. Electrical misoperation in the power system is a frequent failure that threatens the safe operation of power equipment. It may cause large-scale power outages, damage to power equipment, system oscillation and collapse, and even casualties.

[0003] Common anti-error interlocks include mechanical interlocks, electromagnetic interlocks, electrical secondary anti-error interlocks and microcomputer anti-error interlocks. Mechanical interlocks are interlocks that rely on the mechanical structure of the equipment operating mechanism to achieve mutual interlocking. This type of interlock can only be implemented in integrated disconnectors or complete switch cabinets, and is powerless for interlocks between separately arranged equipment; electromagnetic interlocks use auxiliary contacts such as switches, disconnectors, and equipment net doors to connect or disconnect the power supply of electromagnetic locks such as disconnectors that need to be locked so that their operating mechanisms cannot rotate to achieve equipment interlocking. The auxiliary contacts of disconnectors cannot operate correctly due to mechanical reasons, and electromagnetic locks often become rusty due to poor sealing and cannot operate flexibly; electrical anti-error operation is an anti-error function based on the secondary operation circuit, which is generally achieved through the auxiliary contacts of circuit breakers and switches, which are connected in series and interlocked in their secondary operation circuits. However, the wiring of the secondary circuit is complicated. In addition, the secondary operating circuits of the electrically operated disconnectors and earthing switches will produce condensation or accidental contact, insulation damage, etc., and are also very likely to cause the wrong pulling and wrong closing of electrical equipment such as switches and knife switches: the microcomputer anti-error locking system achieves anti-error locking through a special five-protection microcomputer software rule library and on-site locks, but microcomputer system communication and computer key failures will often use unlocking keys and foreign objects to release the lock, which is an offline system. If a padlock is used, it is still a reminder lock, and forced locking cannot be achieved. The "five-protection" function is weakened or even completely lost.

[0004] The traditional anti-error locking method can no longer meet the requirements. As the monitoring anti-error locking system is the development direction of the comprehensive automation application of substations, the wired connection method cannot achieve long-distance control, and there is no unified interface with the anti-error locking of interval equipment. It is impossible to achieve a comprehensive and complex locking logic relationship, and its functions need to be further improved and enhanced. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a centralized intelligent error-proof terminal and a control method thereof.

[0006] The technical solution provided by the present invention is as follows:

[0007] A centralized intelligent anti-error terminal comprises an unlocking unit, a communication module and an input-output module respectively connected to an MCU unit;

[0008] The input-output module includes a multi-channel relay output interface and a switch input acquisition interface, wherein the relay output interface is used to output a control signal to an action circuit of the spacing device, and the switch input acquisition interface is used to detect the switch state of the spacing device and transmit it to the MCU unit;

[0009] The communication module is used to receive the operation instructions issued by the host computer system and transmit them to the MCU unit, and is also used to upload the switch status of the detected interval device to the host computer system;

[0010] The MCU unit is used to control the internal relay of the terminal to be connected when receiving the unlocking command, and output the control signal to the action circuit of the corresponding interval device through the relay output interface, so that the interval device can realize effective action; it is also used to control the internal relay of the terminal to be disconnected when receiving the locking command, so that the corresponding interval device cannot be operated;

[0011] The unlocking unit is used to forcibly start the unlocking state when the anti-error terminal loses power or fails, so that the corresponding interval device can achieve effective action.

[0012] Furthermore, the unlocking unit includes a plurality of unlocking interfaces, which are used to insert a smart unlocking key when the anti-error terminal loses power or fails, and forcibly start the unlocking state so that the corresponding interval device can realize effective action.

[0013] Furthermore, the unlocking interface corresponds to the smart unlocking key one by one, and the same smart unlocking key can only be inserted into the same unlocking interface.

[0014] Furthermore, it also includes a display unit, which includes a plurality of indicator lights for displaying the status of each interval device, and the interval devices include circuit breakers, knife switches and mesh doors.

[0015] Furthermore, the input-output module includes 10 relay output interfaces and is provided with 10 switch input acquisition interfaces; the display unit includes 10 indicator lights, and the unlocking unit includes 10 unlocking interfaces.

[0016] Furthermore, it also includes a power module, the AC input voltage of the power module is 85-305V, and the DC input voltage is 70-430V.

[0017] Furthermore, it also includes an energy storage module, which is used to charge when the power module is supplying power normally, and to supply power to the anti-error terminal when the power module is powered off.

[0018] Furthermore, each of the error-prevention terminals has a unique identification device ID, and the components of the device ID include a manufacturer code, a version label, a version number, and a product serial number.

[0019] A control method for preventing misuse of the terminal as described above comprises the steps of:

[0020] S1, system initialization, enter SYS_STANDBY state;

[0021] S2, the MCU unit determines whether it has received the unlocking command; if so, it controls the internal relay to be connected and outputs the signal to the action circuit of the corresponding interval device through the relay output interface, and the system enters the SYS_WAIT state; otherwise, it executes the next step;

[0022] S3, the MCU unit determines whether the system is powered off. If so, it reports the power off alarm information through the communication module, otherwise, it executes the next step;

[0023] S4. The MCU unit detects whether the status of the interval device changes through the switch input acquisition interface; if it changes and the current system is in the SYS_WAIT state, or if it does not change after the set time and the current system is in the SYS_WAIT state, or if the MCU unit receives a locking command and the current system is in the SYS_WAIT state, the internal relay is controlled to disconnect and output a signal to the action circuit of the corresponding interval device through the relay output interface, the system enters the SYS_STANDBY state, and reports the interval device and system status through the communication module; otherwise, execute step S2.

[0024] Beneficial effects of the present invention:

[0025] The present invention can monitor and control the power system in real time, and realize safe and controllable switching operation. When the centralized intelligent anti-error terminal receives the operation instruction issued by the anti-error operation system or the Internet of Things platform, the interval device program is unlocked, and the circuit breaker and knife switch equipment can realize the opening and closing action, otherwise the circuit breaker, knife switch, network door and other equipment cannot be operated. The present invention can monitor multiple devices (knife switches, switches, network doors) in a single interval or multiple intervals at the same time, and upload their status to the Internet of Things platform and the anti-error system to achieve safety management and control, which can effectively avoid safety accidents caused by human error operation, and effectively ensure the safety of people, power grids, and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0027] Figure 1 It is a schematic diagram of the appearance structure of a centralized intelligent error-preventing terminal provided by an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of an electrical module of a centralized intelligent error-proof terminal provided by an embodiment of the present invention;

[0029] Figure 3 It is a schematic flow chart of a control method of a centralized intelligent error-preventing terminal provided by an embodiment of the present invention;

[0030] Among them, the figure marks represent: 1-display unit, 2-unlocking unit, 3-communication module, 4-voice prompt unit, 5-protective shell, 6-input and output module. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making creative work are all within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] like Figure 1 and Figure 2 As shown, this embodiment provides a centralized intelligent anti-error terminal, which mainly includes a display unit 1, an unlocking unit 2, a communication module 3, a voice prompt unit 4 and an input-output module 6, as well as a corresponding protective shell 5 and an MCU unit encapsulated inside the device. Among them, the input-output module 6 opens 10 relay output interfaces to the outside, and is provided with 10 switch input acquisition interfaces; the display unit 1 includes 10 indicator lights, the unlocking unit 2 includes 10 unlocking interfaces, and the voice prompt unit 4 includes a voice speaker; the communication module 3 includes two antennas for establishing a communication connection with the host computer system. The display unit 1, the unlocking unit 2, the communication module 3, the voice prompt unit 4 and the input-output module 6 are all connected to the MCU unit.

[0034] Substations usually reserve intervals to reserve sufficient space and location for future power system expansion. In the reserved intervals of substations, circuit breakers, knife switches, mesh doors and other interval devices are usually reserved. The intelligent anti-error terminal provided in this embodiment is provided with a relay to control the action circuit of the circuit breaker, knife switch, mesh door and other interval devices to ensure that the circuit breaker or knife switch cannot be operated without an operation instruction, thereby avoiding the occurrence of equipment running out of program or false touch.

[0035] Specifically, the intelligent error-proof terminal uses the communication module 3 to receive the operation instructions issued by the host computer system, and after being processed by the MCU unit, the signal is output to the action circuit of the corresponding interval device through the relay output interface in the input and output module 6. If the operation instruction is an unlocking instruction, the MCU unit controls the internal relay to be connected, and the indicator light of the corresponding road in the display unit 1 lights up, the intelligent error-proof terminal is in the unlocking state, and the corresponding interval device can realize effective action (circuit breaker or knife switch can realize opening and closing action, and the net door can realize opening and closing action). At the same time, the opening and closing state of the interval device is detected in real time through the switch input acquisition interface connected to the corresponding interval device. When the device action is detected, the MCU unit controls the internal relay to disconnect, and the communication module 3 uploads the state of each interval device to the host computer system, and the indicator light of the corresponding road in the display unit 1 is extinguished. If the interval device is detected to have an erroneous operation in the non-unlocking state, the voice prompt unit 4 is used to issue an erroneous operation alarm. The intelligent error-proof terminal provided in this embodiment can collect the state of up to 10 devices (switches, knife switches, net doors) in a single interval or multiple intervals in real time, and upload the state information to the host computer system.

[0036] The intelligent anti-error terminal provided in this embodiment also includes a power supply module, which is AC and DC, with an ultra-wide input voltage range, AC input voltage 85~305V, and DC input voltage 70~430V. It also includes an energy storage module (1F / 5V energy storage capacitor). When the working power supply is working normally, the energy storage module will store electricity. When the input power supply is powered off, the energy storage module will continue to supply power for 5S and report the power failure to the host computer system in time.

[0037] When the intelligent anti-error terminal loses power or has an internal fault, the intelligent unlocking key can be inserted into the unlocking interface in the unlocking unit 2 to force the unlocking state, so that the corresponding interval equipment can achieve effective action, that is, the circuit breaker or knife switch can achieve opening and closing action, and the network door can achieve opening and closing action. The intelligent unlocking key corresponds to the unlocking interface one by one to prevent the unlocking interface corresponding to other interval equipment from being unlocked by mistake, causing misoperation.

[0038] Each of the intelligent error-proof terminals provided by the present invention has a unique identification device ID, which is composed of a manufacturer code, a version label, a version number, and a product serial number, and is used to distinguish different terminals to facilitate identity authentication.

[0039] Embodiment 2

[0040] like Figure 3 As shown, this embodiment provides a control method for the above-mentioned centralized intelligent anti-error terminal, which mainly includes the following steps:

[0041] S1, system initialization, enter SYS_STANDBY state;

[0042] S2, the MCU unit determines whether it has received the unlocking command; if so, it controls the internal relay to be connected and outputs the signal to the action circuit of the corresponding interval device through the relay output interface, controls the display unit to light up the corresponding indicator light, and the system enters the SYS_WAIT state; otherwise, it executes the next step;

[0043] S3, the MCU unit determines whether the system is powered off. If so, it reports the power off alarm information through the communication module, otherwise, it executes the next step;

[0044] S4, the MCU unit detects whether the status of the interval device changes through the switch input acquisition interface; if it changes and the current system is in the SYS_WAIT state, or if it does not change after the set time and the current system is in the SYS_WAIT state, or if the MCU unit receives a locking command and the current system is in the SYS_WAIT state, then the internal relay is controlled to disconnect and output a signal to the action circuit of the corresponding interval device through the relay output interface, the display unit is controlled to turn off the corresponding indicator light, the system enters the SYS_STANDBY state, and the interval device and system status are reported through the communication module; otherwise, execute step S2.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A centralized intelligent anti-error terminal, characterized in that: It includes an unlocking unit, a communication module and an input-output module respectively connected to the MCU unit; The input-output module includes a multi-channel relay output interface and a switch input acquisition interface, wherein the relay output interface is used to output a control signal to an action circuit of the spacing device, and the switch input acquisition interface is used to detect the switch state of the spacing device and transmit it to the MCU unit; The communication module is used to receive the operation instructions issued by the host computer system and transmit them to the MCU unit, and is also used to upload the switch status of the detected interval device to the host computer system; The MCU unit is used to control the internal relay of the terminal to be connected when receiving the unlocking command, and output the control signal to the action circuit of the corresponding interval device through the relay output interface, so that the interval device can realize effective action; it is also used to control the internal relay of the terminal to be disconnected when receiving the locking command, so that the corresponding interval device cannot be operated; The unlocking unit is used to forcibly start the unlocking state when the anti-error terminal loses power or fails, so that the corresponding interval device can achieve effective action.

2. A centralized intelligent error-proof terminal as claimed in claim 1, characterized in that: The unlocking unit includes a plurality of unlocking interfaces, which are used to insert a smart unlocking key when the anti-error terminal loses power or fails, and forcibly start the unlocking state so that the corresponding interval device can realize effective action.

3. A centralized intelligent error-proof terminal as claimed in claim 2, characterized in that: The unlocking interface corresponds to the smart unlocking key one by one, and the same smart unlocking key can only be inserted into the corresponding unlocking interface.

4. A centralized intelligent error-proof terminal as claimed in claim 2, characterized in that: It also includes a display unit, which includes a number of indicator lights for displaying the status of each interval device, and the interval devices include circuit breakers, knife switches and mesh doors.

5. A centralized intelligent error-proof terminal as claimed in claim 4, characterized in that: The input-output module includes 10 relay output interfaces and is provided with 10 switch input acquisition interfaces; the display unit includes 10 indicator lights, and the unlocking unit includes 10 unlocking interfaces.

6. A centralized intelligent error-proof terminal as claimed in claim 1, characterized in that: It also includes a power module, the AC input voltage of the power module is 85-305V, and the DC input voltage is 70-430V.

7. A centralized intelligent error-proof terminal as claimed in claim 6, characterized in that: It also includes an energy storage module, which is used to charge when the power module is supplying power normally, and to supply power to the anti-error terminal when the power module is powered off.

8. A centralized intelligent error-proof terminal as claimed in claim 1, characterized in that: It also includes a voice prompt unit for issuing an alarm when a misoperation of the interval device is detected in a non-unlocked state.

9. A centralized intelligent error-proof terminal as claimed in claim 1, characterized in that: Each of the error-prevention terminals has a unique identification device ID, and the components of the device ID include a manufacturer code, a version label, a version number, and a product serial number.

10. A control method for preventing mis-terminal termination according to any one of claims 1 to 9, characterized in that: Includes steps: S1, system initialization, enter SYS_STANDBY state; S2, the MCU unit determines whether it has received the unlocking command; if so, it controls the internal relay to be connected and outputs the signal to the action circuit of the corresponding interval device through the relay output interface, and the system enters the SYS_WAIT state; otherwise, it executes the next step; S3, the MCU unit determines whether the system is powered off. If so, it reports the power off alarm information through the communication module, otherwise, it executes the next step; S4. The MCU unit detects whether the status of the interval device changes through the switch input acquisition interface; if it changes and the current system is in the SYS_WAIT state, or if it does not change after the set time and the current system is in the SYS_WAIT state, or if the MCU unit receives a locking command and the current system is in the SYS_WAIT state, the internal relay is controlled to disconnect and output a signal to the action circuit of the corresponding interval device through the relay output interface, the system enters the SYS_STANDBY state, and reports the interval device and system status through the communication module; otherwise, execute step S2.

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