CN114513055A - Flexible direct-current distribution network converter station service anti-misoperation system and control method - Google Patents
Flexible direct-current distribution network converter station service anti-misoperation system and control method Download PDFInfo
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- CN114513055A CN114513055A CN202210413286.0A CN202210413286A CN114513055A CN 114513055 A CN114513055 A CN 114513055A CN 202210413286 A CN202210413286 A CN 202210413286A CN 114513055 A CN114513055 A CN 114513055A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a service anti-misoperation system and a control method for a converter station of a flexible direct-current distribution network, which are characterized in that a medium-voltage direct-current electrified display device is used for detecting electrified information of capacitors in primary equipment, a converter valve and a direct-current breaker, the electrified information is converted into an anti-misoperation signal which can be identified by a handheld intelligent key, when the handheld intelligent key carried by an operator receives the anti-misoperation signal of the medium-voltage direct-current electrified display device, whether the primary equipment is electrified or not is determined according to the anti-misoperation signal, the anti-misoperation padlock is controlled to be opened under the condition of no electrification, an operation logic rule and an operation sequence flow of the primary equipment are prestored by the handheld intelligent key, when the operator executes an electronic operation ticket operation, the operation of the operator is logically judged in an anti-misoperation way, the problem that the existing converter station equipment of the flexible direct-current distribution network can not effectively prevent electrified misoperation and prevent the operator from entering a charged interval by mistake is solved, easily causes the technical problem of personal electric shock accidents.
Description
Technical Field
The invention relates to the technical field of power system safety equipment, in particular to a service anti-misoperation system and a control method for a converter station of a flexible direct-current distribution network.
Background
The key equipment in the flexible direct current distribution network is related to whether the flexible direct current distribution network can safely and reliably operate. Compared with the traditional alternating current power distribution network, the system architecture and the working mode of the flexible direct current power distribution network are different, so that the key equipment in the traditional alternating current power distribution network cannot be completely suitable for the flexible direct current power distribution network, and the anti-misoperation means of the key equipment are different
Current research on key equipment of a dc distribution network is mainly focused on dc circuit breakers, dc transformers, dc cables, voltage balances and the like. The novel equipment such as the direct current transformer, the direct current breaker, the converter valve and the like is installed in a closed cabinet type, a large number of capacitor elements are configured in the equipment, the equipment is electrified for a long time after outage, but equipment for monitoring capacitor voltage is lacked, misoperation such as electrification grounding switch-on cannot be effectively prevented under the condition, and malignant misoperation is easily caused. In addition, the equipment cabinet door can be opened by operating personnel when the operation, can't prevent effectively that operating personnel from mistake from getting into electrified interval, arousing the personal electric shock accident easily.
Disclosure of Invention
The invention provides a service anti-misoperation system and a control method for a converter station of a flexible direct-current distribution network, which are used for solving the technical problems that the conventional equipment for the converter station of the flexible direct-current distribution network cannot effectively prevent live-line misoperation and prevent operators from entering live-line intervals by mistake, and personal electric shock accidents are easily caused.
In view of this, the first aspect of the present invention provides a service error prevention system for a converter station of a flexible dc distribution network, which includes a medium-voltage dc live display device, a handheld smart key, and an error-prevention padlock;
the anti-misoperation padlock is arranged on the side of the primary equipment cabinet door;
the medium-voltage direct-current electrified display device is arranged on the primary equipment cabinet body and used for detecting electrified information of capacitors in primary equipment, a converter valve and a direct-current circuit breaker and converting the electrified information into an anti-error signal which can be identified by a handheld intelligent key;
the handheld intelligent key is in communication connection with the control host through the communication adapter and is used for receiving the electronic operation ticket sent by the control host;
the handheld intelligent key prestores the operation logic rules and the operation sequence flow of the primary equipment, and is used for carrying out logic anti-error judgment on the operation of an operator when the operator executes an electronic operation ticket operation;
the handheld intelligent key is in communication connection with the medium-voltage direct-current live display device and the anti-misoperation padlock respectively, and is used for identifying the anti-misoperation signal detected by the medium-voltage direct-current live display device and controlling the opening and closing state of the anti-misoperation padlock according to the anti-misoperation signal.
Optionally, the medium-voltage direct-current live display device comprises a power module, a sensing unit, a signal acquisition submodule, an MCU module and an interlocking output unit;
the power supply module is connected with the signal acquisition submodule, the MCU module and the interlocking output unit;
the sensing unit, the signal acquisition submodule, the MCU module and the interlocking output unit are sequentially connected;
the sensing unit is used for detecting primary equipment, the electrified information of electric capacity among converter valve and the direct current circuit breaker, send electrified information for the signal acquisition submodule piece, the signal acquisition submodule piece is used for carrying out the preliminary treatment to electrified information, send the electrified information after the preliminary treatment for the MCU module, the MCU module is used for generating the recognizable mistake signal of preventing of handheld intelligent key according to the electrified information after the preliminary treatment, interlock output unit is used for sending the mistake signal of preventing for handheld intelligent key, make handheld intelligent key prevent the open and shut state of mistake padlock according to preventing the control of mistake signal, wherein, the preliminary treatment includes filtering, enlarge and AD conversion.
Optionally, the medium-voltage dc live display device further includes a self-checking functional circuit;
the self-checking functional circuit is respectively connected with the signal acquisition submodule, the MCU module and the interlocking output unit and is used for self-checking the states of the signal acquisition submodule, the MCU module and the interlocking output unit.
Optionally, the medium-voltage dc live display device further includes an indication circuit module;
the indicating circuit module is connected with the MCU module and used for indicating whether a medium-voltage bus and a capacitor of primary equipment are electrified or not.
Optionally, the communication adapter is configured with a charging interface of the handheld smart key for charging the handheld smart key.
Optionally, the handheld smart key is further used for storing operation records and has a power-down memory function.
Optionally, the medium-voltage dc live-line display device reserves an anti-error interface, and an RFID identity chip is built in the anti-error interface, and is used for performing permission adaptation with the handheld smart key, where basic information of the primary device is stored in the handheld smart key.
A second aspect of the present invention provides a method for controlling a service error prevention system for a converter station of a flexible direct current distribution network, where the method is implemented in any one of the service error prevention systems for a converter station of a flexible direct current distribution network described in the first aspect, and includes:
the medium-voltage direct-current live display device detects the live information of capacitors in the primary equipment, the converter valve and the direct-current breaker and converts the live information into an anti-error signal which can be identified by a handheld intelligent key;
the handheld intelligent key receives and identifies the anti-misoperation signal detected by the medium-voltage direct-current live display device, and controls the opening and closing state of the anti-misoperation padlock according to the anti-misoperation signal;
and the handheld intelligent key carries out logic anti-misjudgment on the operation of an operator according to the electronic operation ticket.
Optionally, handheld intelligent key receives and discerns the mistake signal of preventing that live display device of middling pressure direct current detected, prevents the open and shut state of mistake padlock according to preventing mistake signal control, still includes before:
the handheld intelligent key carries out authentication on the medium-voltage direct-current live display device which sends the anti-misoperation signal, and confirms whether the handheld intelligent key has the authority of controlling primary equipment corresponding to the medium-voltage direct-current live display device.
Optionally, the electrified display device of middling pressure direct current detects the electrified information of the electric capacity in primary equipment, converter valve and the direct current circuit breaker, converts electrified information into the mistake signal of preventing that can be discerned by handheld intelligent key, includes:
the medium-voltage direct-current live display device detects the live information of a medium-voltage bus and a capacitor of the primary equipment;
the medium-voltage direct-current charged display device carries out pretreatment on charged information, wherein the pretreatment comprises filtering, amplification and AD conversion;
and the medium-voltage direct-current electrified display device generates an anti-error signal which can be identified by the handheld intelligent key according to the preprocessed electrified information.
According to the technical scheme, the flexible direct-current distribution network converter station service anti-misoperation system provided by the invention has the following advantages:
the invention provides a flexible direct current distribution network converter station service anti-misoperation system, which detects the charged information of capacitors in primary equipment, a converter valve and a direct current breaker through a medium-voltage direct current charged display device, converts the charged information into an anti-misoperation signal which can be identified by a handheld intelligent key, an operator carries the handheld intelligent key, determines whether the primary equipment is charged or not according to the anti-misoperation signal after the handheld intelligent key receives the anti-misoperation signal of the medium-voltage direct current charged display device, controls the anti-misoperation opening of a padlock under the condition of determining no electricity, the handheld intelligent key prestores an operation logic rule and an operation sequence flow of the primary equipment, can carry out logic anti-misoperation judgment on the operation of the operator according to the received operation logic rule and the operation sequence flow corresponding to an electronic operation ticket when the operator executes the operation of the electronic operation ticket, and terminates the operation in time when the operation is wrong, the technical problems that the existing flexible direct-current power distribution network converter station equipment cannot effectively prevent live-line misoperation and prevent operators from entering live-line intervals by mistake and personal electric shock accidents are easily caused are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a service error prevention system for a converter station of a flexible direct-current distribution network according to the present invention;
fig. 2 is a schematic structural diagram of a medium-voltage dc charged display device provided by the present invention;
FIG. 3 is a schematic structural diagram of a power module according to the present invention;
fig. 4 is a schematic network architecture diagram of a service error prevention system for a converter station of a flexible direct-current distribution network provided by the invention;
fig. 5 is a schematic flow chart of a control method of a service anti-misoperation system of a converter station of a flexible direct-current distribution network.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For easy understanding, please refer to fig. 1, the present invention provides an embodiment of a service error prevention system for a converter station of a flexible direct current distribution network, including a medium voltage direct current live display device, a handheld smart key, and an error prevention padlock;
the anti-misoperation padlock is arranged on the side of the primary equipment cabinet door;
the medium-voltage direct-current electrified display device is arranged on the primary equipment cabinet body and used for detecting electrified information of capacitors in primary equipment, a converter valve and a direct-current circuit breaker and converting the electrified information into an anti-error signal which can be identified by a handheld intelligent key;
the handheld intelligent key is in communication connection with the control host through the communication adapter and is used for receiving the electronic operation ticket sent by the control host;
the handheld intelligent key prestores the operation logic rules and the operation sequence flow of the primary equipment, and is used for carrying out logic anti-error judgment on the operation of an operator when the operator executes an electronic operation ticket operation;
the handheld intelligent key is in communication connection with the medium-voltage direct-current live display device and the anti-misoperation padlock respectively, and is used for identifying the anti-misoperation signal detected by the medium-voltage direct-current live display device and controlling the opening and closing state of the anti-misoperation padlock according to the anti-misoperation signal.
In the embodiment of the invention, the anti-misoperation padlock is arranged on the door side of the primary equipment cabinet such as the ground knife operation hole, the medium-voltage direct-current live display device is arranged on the primary equipment cabinet body, and an operator carries the handheld intelligent key when operating the equipment. The medium-voltage direct-current charged display device detects charged information of capacitors in the primary equipment, the converter valve and the direct-current circuit breaker, converts the charged information into an anti-error signal which can be identified by the handheld intelligent key, and then sends the anti-error signal to the handheld intelligent key. The system adopts a C/S framework, as shown in figure 4, a control host runs and a main control layer, is responsible for communicating with a monitoring system in a converter station to obtain the real-time state of primary equipment, prestores the operation logic rules and the operation sequence flow of the primary equipment, and sends the operation logic rules and the operation sequence flow to the handheld intelligent key. Hand-held intelligent key belongs to the wall, is responsible for saving primary equipment data, discerns the mistake signal of preventing that middling pressure direct current electrified display device sent, tests the electricity to primary equipment, and the leading condition of cabinet door and ground sword operation is regarded as to the uncharged information of middling pressure direct current electrified display device output to and the operation process inspection of operating personnel. The medium-voltage electrified display device belongs to an equipment layer, is responsible for acquiring electrified information of equipment and a capacitor, and converts the electrified information into an anti-error signal which can be identified by a handheld intelligent key. Prevent mistake tool to lock and belong to the equipment layer, can carry out mandatory shutting to primary equipment such as switch cabinet door and ground sword, as long as through not electrified verification can carry out the operation of unblanking.
In the embodiment of the invention, the handheld intelligent key prestores the operation logic rules and the operation sequence flow of the primary equipment. Before operation, an operator can issue an operation order on a control host (a distribution network anti-misoperation workstation or a mobile terminal) of a main control layer, and in order to ensure the safety of field operation, the operation order is subjected to anti-misoperation logic check in the process of issuing the operation order, so that the correctness of the operation order is ensured. The issued electronic operation tickets passing the audit are sent to the handheld intelligent key, the handheld intelligent key carries out logic error-prevention judgment on the operation of the operator according to the content of the electronic operation tickets, the operator can only carry out field operation according to the sequence and the content in the operation tickets, the operator can check and execute the operation tickets item by item on the mobile terminal, if the current operation of the operator has errors, the operation is stopped immediately, and the risk operation of a switch cabinet door and a grounding switch and other error operations of equipment in the converter station of the flexible direct distribution network are avoided.
The anti-misoperation lockset supported by the existing system is single in type, and the key can not be matched with various locksets. In the embodiment of the invention, the device information of all primary equipment is stored in the handheld intelligent key, so that the handheld intelligent key can identify and pair the primary equipment, the key and the equipment can be matched in a one-to-one special way, and the key and the equipment can be matched in a one-to-many multi-way, thereby greatly improving the operation range and the convenience degree of the intelligent key in use.
The existing anti-misoperation means for other misoperation generated by an operator when operating equipment generally comprises establishing an anti-misoperation workstation, and performing anti-misoperation locking when the operator operates the equipment by monitoring the real-time state of the equipment in combination with a monitoring device. The realization mode is not matched with an electricity testing device of the equipment, two new devices are added in the spacing layer, and the equipment for realizing the locking of the device is heavy and complex in configuration and cannot be flexible and easy to use. The flexible direct-current distribution network convertor station service anti-misoperation system provided by the embodiment of the invention can well solve the problems by matching the medium-voltage direct-current electrified display device with the handheld intelligent key.
Carry out data communication through the communication adapter between control host computer and the handheld intelligent key, the communication adapter still can be configured with the interface that charges, is responsible for charging for handheld intelligent key to guarantee that handheld intelligent key's work does not break off because of the power problem.
The flexible direct-current distribution network converter station service anti-misoperation system provided by the embodiment of the invention detects the charged information of capacitors in primary equipment, a converter valve and a direct-current breaker through a medium-voltage direct-current charged display device, converts the charged information into an anti-misoperation signal which can be identified by a handheld intelligent key, an operator carries the handheld intelligent key, determines whether the primary equipment is charged or not according to the anti-misoperation signal after the handheld intelligent key receives the anti-misoperation signal of the medium-voltage direct-current charged display device, controls the anti-misoperation padlock to be opened under the condition of no electricity, prestores the operation logic rule and the operation sequence flow of the primary equipment by the handheld intelligent key, can perform logic anti-misoperation judgment on the operation of the operator according to the received operation logic rule and the operation sequence flow corresponding to an electronic operation ticket when the operator executes the operation of the electronic operation ticket, and terminates the operation in time when the operation is wrong, the technical problems that the existing flexible direct-current power distribution network converter station equipment cannot effectively prevent live-line misoperation and prevent operators from entering live-line intervals by mistake and personal electric shock accidents are easily caused are solved.
As shown in fig. 2, in one embodiment, the medium-voltage dc live-line display device includes a power module, a sensing unit, a signal acquisition sub-module, an MCU module, and an interlock output unit;
the power supply module is connected with the signal acquisition submodule, the MCU module and the interlocking output unit;
the sensing unit, the signal acquisition submodule, the MCU module and the interlocking output unit are sequentially connected;
the sensing unit is used for detecting primary equipment, the electrified information of electric capacity among converter valve and the direct current circuit breaker, send electrified information for the signal acquisition submodule piece, the signal acquisition submodule piece is used for carrying out the preliminary treatment to electrified information, send the electrified information after the preliminary treatment for the MCU module, the MCU module is used for generating the recognizable mistake signal of preventing of handheld intelligent key according to the electrified information after the preliminary treatment, interlock output unit is used for sending the mistake signal of preventing for handheld intelligent key, make handheld intelligent key prevent the open and shut state of mistake padlock according to preventing the control of mistake signal, wherein, the preliminary treatment includes filtering, enlarge and AD conversion.
It should be noted that the main functional points of the medium-voltage dc live display device are to accurately and sensitively collect and rapidly and stably output the live information of the primary device. The charged information of the primary equipment is used as a determining factor for judging whether the operating environment of the equipment is safe, so that the accuracy of charged information acquisition must be ensured. The medium-voltage direct-current live display device is composed of a power supply module, a sensing unit, a signal acquisition sub-module, an MCU module and an interlocking output unit in hardware design, a functional composition block diagram is shown in figure 2, and the modular design of the medium-voltage direct-current live display device well improves the stability and reliability of a system and reduces the difficulty of debugging and maintenance. The MCU module is connected with the display unit, and the display unit is used for human-computer interaction. The medium-voltage direct-current live display device adopts an external power supply mode, and the supported power supply is AC/DC 110-220V, so that a power module of the medium-voltage direct-current live display device is composed of an AC/DC power conversion circuit and an LDO circuit, as shown in fig. 3, the power supply is converted into a low-voltage direct-current power supply through the AC/DC power conversion circuit, and then the low-voltage direct-current power supply is converted into DC3.3V power supply through the LDO circuit to supply power to each functional circuit. In order to ensure the power supply stability of the medium-voltage direct-current live display device, a protection device and a protection device are added to the input end in the circuit design of the power module, so that the fluctuation and other interference of the input power can be ensured not to influence the reliability of each functional circuit power supply.
The signal acquisition unit of the medium-voltage direct-current electrified display device is a key component for realizing the electricity testing and anti-misoperation functions, and is divided into a sensing unit and a signal acquisition submodule on a hardware circuit, wherein the signal acquisition submodule comprises a filter circuit, a signal amplification circuit and an AD conversion circuit. The sensing unit collects the charged information of the medium-voltage bus and the capacitor of the primary equipment, then filters and amplifies the collected signals through the signal collection submodule, and then outputs the signals to the MCU module for processing through AD conversion. The MCU module generates an anti-error signal which corresponds to the charged information and can be identified by the handheld intelligent key after receiving the charged information processed by the signal acquisition submodule and sends the anti-error signal to the handheld intelligent key. The medium-voltage direct-current live display device uses a self-recovery fuse, a piezoresistor and other protection devices to perform short-circuit protection and surge impact suppression at the front end of a power input loop. And a gas discharge tube, a piezoresistor, a self-recovery fuse, a TVS transient suppression diode and the like are adopted to absorb possible surge overvoltage from the sensing unit to the signal acquisition submodule.
The running state of the device is an important reference for checking the accuracy of the operation executed by an operator, so that the device needs to be subjected to real-time self-checking, and the abnormal state of the device is reflected in time.
The display unit hardware structure connected with the MCU module can comprise a human-computer interaction interface, a human-computer interaction key function circuit and an indication circuit module, wherein the human-computer interaction interface is used for human-computer interaction display, the human-computer interaction key function circuit is used for realizing the input of an operation instruction of an operator to the device, and the indication circuit module is used for indicating the electrification conditions of a medium-voltage bus and a capacitor of primary equipment.
In one embodiment, the medium-voltage direct-current live display device is reserved with an anti-misoperation interface, and an RFID identity code sheet is arranged in the anti-misoperation interface and used for permission adaptation with a handheld intelligent key. The anti-misoperation interface can ensure the one-to-one accuracy of the handheld intelligent key and the operated equipment, also can ensure the one-to-many overall arrangement, and ensures the matching between the association of signals and the equipment.
In one embodiment, the handheld intelligent key is also used for storing operation records and has a power-down memory function. The operation result after the equipment is operated is reported and stored in the handheld intelligent key, more than 100 latest operation records can be stored in the handheld intelligent key, the handheld intelligent key has a power-down memory function, and the operation records are not lost when the power supply is turned off.
For convenience of understanding, please refer to fig. 5, an embodiment of a control method for a flexible dc distribution network converter station service anti-error system is provided in the present invention, where the control method is executed in any flexible dc distribution network converter station service anti-error system in the foregoing flexible dc distribution network converter station service anti-error system embodiment, and includes:
and step S1, detecting the charged information of the capacitors in the primary equipment, the converter valve and the direct current breaker by the medium-voltage direct current charged display device, and converting the charged information into an anti-error signal which can be identified by the handheld intelligent key.
And step S2, the handheld intelligent key receives and identifies the anti-error signal detected by the medium-voltage direct-current live display device, and controls the opening and closing state of the anti-error padlock according to the anti-error signal.
And step S3, the handheld intelligent key carries out logic anti-misjudgment on the operation of the operator according to the electronic operation ticket.
The control method of the flexible direct current distribution network converter station service anti-misoperation system provided by the embodiment of the invention detects the charged information of capacitors in primary equipment, a converter valve and a direct current breaker through a medium-voltage direct current charged display device, converts the charged information into an anti-misoperation signal which can be identified by a handheld intelligent key, an operator carries the handheld intelligent key, determines whether the primary equipment is charged or not according to the anti-misoperation signal after the handheld intelligent key receives the anti-misoperation signal of the medium-voltage direct current charged display device, controls the anti-misoperation padlock to be opened under the condition of no electricity, prestores an operation logic rule and an operation sequence flow of the primary equipment in the handheld intelligent key, can perform logic anti-misoperation judgment on the operation of the operator according to the received operation logic rule and the operation sequence flow corresponding to an electronic operation ticket when the operator performs the operation of the electronic operation ticket, the operation is timely stopped when the operation has the mistake, and the technical problems that the existing flexible direct current distribution network converter station equipment cannot effectively prevent live-line misoperation and prevent operators from entering live-line intervals by mistake and personal electric shock accidents are easily caused are solved.
In one embodiment, before step S2, the method further includes:
and S1-2, the handheld intelligent key carries out identity verification on the medium-voltage direct-current live display device which sends the anti-error signal, and confirms whether the handheld intelligent key has the authority of controlling primary equipment corresponding to the medium-voltage direct-current live display device.
The handheld intelligent key saves the device information of all primary equipment, so that the handheld intelligent key can identify and pair the primary equipment, the key and the equipment can be matched in a one-to-one special mode, the key and the equipment can also be matched in a one-to-many multipurpose mode, and the operation range and the using convenience degree of the intelligent key are greatly improved.
Step S1 specifically includes:
the medium-voltage direct-current live display device detects the live information of a medium-voltage bus and a capacitor of the primary equipment;
the medium-voltage direct-current charged display device carries out pretreatment on charged information, wherein the pretreatment comprises filtering, amplification and AD conversion;
and the medium-voltage direct-current electrified display device generates an anti-error signal which can be identified by the handheld intelligent key according to the preprocessed electrified information.
The working principle of the control method of the flexible direct current distribution network converter station service error prevention system provided in the embodiment of the invention is the same as that of the flexible direct current distribution network converter station service error prevention system in the flexible direct current distribution network converter station service error prevention system embodiment, and the detailed description is omitted here.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A flexible direct current distribution network convertor station service anti-misoperation system is characterized by comprising a medium-voltage direct current live display device, a handheld intelligent key and an anti-misoperation padlock;
the anti-misoperation padlock is arranged on the side of the primary equipment cabinet door;
the medium-voltage direct-current electrified display device is arranged on the primary equipment cabinet body and used for detecting electrified information of capacitors in primary equipment, a converter valve and a direct-current circuit breaker and converting the electrified information into an anti-error signal which can be identified by a handheld intelligent key;
the handheld intelligent key is in communication connection with the control host through the communication adapter and is used for receiving the electronic operation ticket sent by the control host;
the handheld intelligent key prestores the operation logic rules and the operation sequence flow of the primary equipment, and is used for carrying out logic anti-error judgment on the operation of an operator when the operator executes an electronic operation ticket operation;
the handheld intelligent key is in communication connection with the medium-voltage direct-current live display device and the anti-misoperation padlock respectively, and is used for identifying the anti-misoperation signal detected by the medium-voltage direct-current live display device and controlling the opening and closing state of the anti-misoperation padlock according to the anti-misoperation signal.
2. The service anti-misoperation system for the flexible direct-current distribution network converter station is characterized in that the medium-voltage direct-current electrified display device comprises a power module, a sensing unit, a signal acquisition submodule, an MCU module and an interlocking output unit;
the power supply module is connected with the signal acquisition submodule, the MCU module and the interlocking output unit;
the sensing unit, the signal acquisition submodule, the MCU module and the interlocking output unit are sequentially connected;
the sensing unit is used for detecting primary equipment, the electrified information of electric capacity among converter valve and the direct current circuit breaker, send electrified information for the signal acquisition submodule piece, the signal acquisition submodule piece is used for carrying out the preliminary treatment to electrified information, send the electrified information after the preliminary treatment for the MCU module, the MCU module is used for generating the recognizable mistake signal of preventing of handheld intelligent key according to the electrified information after the preliminary treatment, interlock output unit is used for sending the mistake signal of preventing for handheld intelligent key, make handheld intelligent key prevent the open and shut state of mistake padlock according to preventing the control of mistake signal, wherein, the preliminary treatment includes filtering, enlarge and AD conversion.
3. The service anti-misoperation system for the flexible direct-current distribution network converter station according to claim 2, wherein the medium-voltage direct-current live display device further comprises a self-checking function circuit;
the self-checking functional circuit is respectively connected with the signal acquisition submodule, the MCU module and the interlocking output unit and is used for self-checking the states of the signal acquisition submodule, the MCU module and the interlocking output unit.
4. The service anti-misoperation system for the flexible direct-current distribution network converter station according to claim 1, wherein the medium-voltage direct-current electrified display device further comprises an indication circuit module;
and the indicating circuit module is connected with the MCU module and is used for indicating whether the medium-voltage bus and the capacitor of the primary equipment are electrified or not.
5. The service anti-misoperation system for the flexible direct-current distribution network converter station is characterized in that the communication adapter is provided with a charging interface of a handheld intelligent key and used for charging the handheld intelligent key.
6. The service anti-misoperation system for the flexible direct-current distribution network converter station is characterized in that the handheld intelligent key is also used for storing operation records and has a power failure memory function.
7. The service anti-misoperation system for the flexible direct-current distribution network converter station according to claim 1 is characterized in that an anti-misoperation interface is reserved in the medium-voltage direct-current live display device, an RFID identity code sheet is arranged in the anti-misoperation interface and used for permission adaptation with a handheld intelligent key, and basic information of primary equipment is stored in the handheld intelligent key.
8. A control method for a service error prevention system of a converter station of a flexible direct current distribution network is characterized in that the control method is executed in the service error prevention system of the converter station of the flexible direct current distribution network of any one of claims 1 to 7, and comprises the following steps:
the medium-voltage direct-current live display device detects the live information of capacitors in the primary equipment, the converter valve and the direct-current breaker and converts the live information into an anti-error signal which can be identified by a handheld intelligent key;
the handheld intelligent key receives and identifies the anti-misoperation signal detected by the medium-voltage direct-current live display device, and controls the opening and closing state of the anti-misoperation padlock according to the anti-misoperation signal;
and the handheld intelligent key carries out logic anti-misjudgment on the operation of an operator according to the electronic operation ticket.
9. The method for controlling the service error prevention system of the flexible direct-current distribution network converter station according to claim 8, wherein the handheld intelligent key receives and identifies the error prevention signal detected by the medium-voltage direct-current live display device, and controls the open-close state of the error prevention padlock according to the error prevention signal, and the method further comprises the following steps:
the handheld intelligent key carries out authentication on the medium-voltage direct-current live display device which sends the anti-misoperation signal, and confirms whether the handheld intelligent key has the authority of controlling primary equipment corresponding to the medium-voltage direct-current live display device.
10. The method for controlling the service error prevention system of the flexible direct-current distribution network converter station according to claim 8, wherein the medium-voltage direct-current live display device detects live information of capacitors in the primary equipment, the converter valve and the direct-current circuit breaker, and converts the live information into an error prevention signal which can be identified by a handheld intelligent key, and the method comprises the following steps:
the medium-voltage direct-current live display device detects the live information of a medium-voltage bus and a capacitor of the primary equipment;
the medium-voltage direct-current charged display device carries out pretreatment on charged information, wherein the pretreatment comprises filtering, amplification and AD conversion;
and the medium-voltage direct-current electrified display device generates an anti-error signal which can be identified by the handheld intelligent key according to the preprocessed electrified information.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201868947U (en) * | 2010-08-30 | 2011-06-15 | 珠海优特电力科技股份有限公司 | Anti-misoperation lock-out system |
| CN202167897U (en) * | 2011-08-17 | 2012-03-14 | 珠海优特电力科技股份有限公司 | Intelligent anti-misoperation locking device |
| CN104078254A (en) * | 2014-05-12 | 2014-10-01 | 国家电网公司 | Safety locking device of 10 kV ring main unit and locking control system |
| CN204044230U (en) * | 2014-08-19 | 2014-12-24 | 国家电网公司 | With the high voltage display device that error proof locking system of microcomputer is supporting |
| CN104993597A (en) * | 2015-07-16 | 2015-10-21 | 国网河南省电力公司漯河供电公司 | Anti-misoperation system |
| CN113725833A (en) * | 2021-08-31 | 2021-11-30 | 广东电网有限责任公司 | Flexible direct current distribution network five-prevention locking system |
-
2022
- 2022-04-20 CN CN202210413286.0A patent/CN114513055A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201868947U (en) * | 2010-08-30 | 2011-06-15 | 珠海优特电力科技股份有限公司 | Anti-misoperation lock-out system |
| CN202167897U (en) * | 2011-08-17 | 2012-03-14 | 珠海优特电力科技股份有限公司 | Intelligent anti-misoperation locking device |
| CN104078254A (en) * | 2014-05-12 | 2014-10-01 | 国家电网公司 | Safety locking device of 10 kV ring main unit and locking control system |
| CN204044230U (en) * | 2014-08-19 | 2014-12-24 | 国家电网公司 | With the high voltage display device that error proof locking system of microcomputer is supporting |
| CN104993597A (en) * | 2015-07-16 | 2015-10-21 | 国网河南省电力公司漯河供电公司 | Anti-misoperation system |
| CN113725833A (en) * | 2021-08-31 | 2021-11-30 | 广东电网有限责任公司 | Flexible direct current distribution network five-prevention locking system |
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