CN111736498A - Ring main unit control system and working method thereof - Google Patents
Ring main unit control system and working method thereof Download PDFInfo
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- CN111736498A CN111736498A CN202010284125.7A CN202010284125A CN111736498A CN 111736498 A CN111736498 A CN 111736498A CN 202010284125 A CN202010284125 A CN 202010284125A CN 111736498 A CN111736498 A CN 111736498A
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- main unit
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention relates to a ring main unit control system and a working method thereof, wherein the ring main unit control system comprises: the device comprises a control module, a signal acquisition module, an indication module and a communication module; the signal acquisition module is suitable for acquiring state data of the power equipment and sending the state data to the control module; and the control module is adapted to control the indication module to indicate status data; the ring main unit control system carries out signal logic judgment through the control module, the MOS tube carries out output control, and the logic interlocking function is realized without using complex secondary wiring.
Description
Technical Field
The invention relates to the technical field of ring main unit monitoring, in particular to a ring main unit control system and a working method thereof.
Background
The 12 KV ring main unit is an important component of a power grid, and control and monitoring of the ring main unit are key execution items in the industry. In the traditional control and state indication of the ring main unit, the control of a mechanical mechanism and the monitoring of the working state of the mechanical mechanism are realized through complex secondary wiring and various electrical elements; the existing technical scheme is that a circuit is used for connecting a change-over switch, a position switch, an auxiliary relay, an execution element and an indication element for multiple times to complete logic functions. The traditional secondary wiring needs professional technicians to carry out logic design, and specific logic functions are met according to different equipment and application requirements; the technical personnel are required to connect various components by using lines to realize the logic control function, the workload is large, the process is complex, the error is easy to occur, the line is difficult to overhaul, and the logic and data parameter change is troublesome. And the monitoring analysis and protection functions of the equipment are not provided.
Disclosure of Invention
The invention aims to provide a ring main unit control system and a working method thereof.
In order to solve the above technical problem, the present invention provides a ring main unit control system, including: the device comprises a control module, a signal acquisition module and an indication module; the signal acquisition module is suitable for acquiring state data of the power equipment and sending the state data to the control module; and the control module is suitable for controlling the indicating module to indicate the state data.
Further, the signal acquisition module includes: the circuit comprises a switch state sampling circuit, a voltage signal acquisition circuit, a current signal acquisition circuit and an overcurrent signal acquisition circuit.
Further, the indication module includes: the display submodule and the buzzer submodule; the display submodule is suitable for displaying status data; and when the state data is abnormal, the control module is suitable for controlling the buzzer submodule to give out buzzing so as to give an alarm.
Further, the ring main unit control system further includes: the communication module is connected with the control module; the control module is suitable for sending the state data of the power equipment to an upper computer through the communication module.
Further, the communication module includes: RS485 communication circuit.
Further, the ring main unit control system further includes: the device comprises an operation module and an output control module; the operation module is suitable for sending an operation instruction signal to the control module; and the control module is suitable for controlling the output control module to execute the operation instruction according to the operation instruction signal.
Further, the operation module includes: local button signal acquisition circuit and distant place knob signal acquisition circuit.
Further, the output control module includes: the MOS tube control one-way output circuit, the MOS tube control two-way output circuit and the relay signal output circuit.
Further, the operation instruction signal includes: the system comprises an opening signal, a closing signal, an energy storage signal, an electromagnetic lock signal and an illumination signal.
In another aspect, the present invention further provides a working method of the ring main unit control system, including: acquiring state data of the power equipment through a signal acquisition module, and sending the state data to a control module; and controlling the indicating module to indicate the state data through the control module.
The ring main unit control system has the advantages that the control module is used for carrying out signal logic judgment, the MOS tube is used for carrying out output control, and the logic interlocking function is realized without using complex secondary wiring; furthermore, the ring main unit control system has an RS485 communication function, and can remotely send out the state information of the power equipment to realize remote monitoring; in addition, the ring main unit control system also has a motor locked-rotor protection function, and when equipment breaks down, the ring main unit control system stops working and reports alarm information.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic block diagram of a ring main unit control system according to the present invention;
fig. 2 is a circuit diagram of a switch state sampling circuit of the ring main unit control system according to the present invention;
fig. 3 is a circuit diagram of a voltage signal acquisition circuit of the ring main unit control system of the present invention;
fig. 4 is a circuit diagram of a current signal acquisition circuit of the ring main unit control system of the present invention;
fig. 5 is an overcurrent signal acquisition circuit diagram of the ring main unit control system of the present invention;
fig. 6 is a circuit diagram of a panel display of the ring main unit control system according to the present invention;
fig. 7 is a circuit diagram of a buzzer of the ring main unit control system of the present invention;
fig. 8 is an RS485 communication circuit diagram of the ring main unit control system of the present invention;
fig. 9 is a circuit diagram of a local key signal acquisition circuit of the ring main unit control system according to the present invention;
fig. 10 is a circuit diagram of a remote knob signal acquisition circuit of the ring main unit control system of the present invention;
fig. 11 is a circuit diagram of a MOS tube control unidirectional output circuit of the ring main unit control system of the present invention;
fig. 12 is a circuit diagram of a MOS transistor control bidirectional output circuit of the ring main unit control system of the present invention;
fig. 13 is a circuit diagram of a relay signal output circuit of the ring main unit control system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, but 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.
Example 1
As shown in fig. 1, this embodiment 1 provides a ring main unit control system, which includes: the device comprises a control module, a signal acquisition module and an indication module; the signal acquisition module is suitable for acquiring state data of the power equipment and sending the state data to the control module; and the control module is suitable for controlling the indicating module to indicate the state data.
Specifically, the control module is, for example, but not limited to, an STM32F103RCT6 type single chip microcomputer.
The signal acquisition module includes: the circuit comprises a switch state sampling circuit, a voltage signal acquisition circuit, a current signal acquisition circuit and an overcurrent signal acquisition circuit.
Specifically, as shown in fig. 2, the switching state sampling circuit is adapted to collect a switching state of a power device, and includes: PC357 type photocoupler D3; as shown in fig. 3, the voltage signal acquisition circuit includes: a TV31D type voltage transformer and an LM358ADR type operational amplifier U6A; as shown in fig. 4, the current signal collecting circuit includes: a TA2321 type current transformer and an LM358ADR type operational amplifier U6A; as shown in fig. 5, the over-current signal acquisition circuit includes: the amplifier comprises an LM358ADR operational amplifier U6A, an LM358ADR operational amplifier U6B, an LM321 operational amplifier U1, a PC357 photocoupler D12 and a PC357 photocoupler D13.
The indication module comprises: the display submodule and the buzzer submodule; the display sub-module is suitable for displaying status data so as to monitor the operating state of the power equipment remotely; and when the state data is abnormal, the control module is suitable for controlling the buzzer submodule to give out buzzes so as to give an alarm, so that related personnel can know the abnormality in time, and unnecessary loss is avoided.
Specifically, as shown in fig. 6, the display sub-module includes a panel display circuit, and the panel display circuit includes a TM1640 LED driving control dedicated chip, an SMG3 digital chip, a PC357 photocoupler D3, and a MOS transistor Q4; as shown in fig. 7, the buzzer submodule includes a buzzer circuit including a transistor Q1 and a buzzer U2.
The ring main unit control system further comprises: the communication module is connected with the control module; the control module is suitable for sending the state data of the power equipment to an upper computer through the communication module.
Specifically, the host computer can be the control end, can send power equipment's state data remote to control end through communication module to the realization is to power equipment's control.
The communication module includes: RS485 communication circuit.
Specifically, as shown in fig. 8, the RS485 communication circuit includes: an IS181GB type photocoupler D1, an IS181GB type photocoupler D2, an IS181GB type photocoupler D3 and an SN75176BD communication chip U3.
The ring main unit control system further comprises: the device comprises an operation module and an output control module; the operation module is suitable for sending an operation instruction signal to the control module; and the control module is suitable for controlling the output control module to execute the operation instruction according to the operation instruction signal.
In this embodiment, the operation instruction signal includes: the system comprises an opening signal, a closing signal, an energy storage signal, an electromagnetic lock signal and an illumination signal.
The operation module comprises: local button signal acquisition circuit and distant place knob signal acquisition circuit.
In this embodiment, an operator may operate a local key through a human-computer interaction module, so as to send an operation instruction signal to the control module, as shown in fig. 9, the local key signal acquisition circuit includes an SN74HC245PWR type transceiver U4; the operator can also operate the remote knob and then send an operation instruction signal to the control module, as shown in fig. 10, the remote knob signal acquisition circuit also includes: SN74HC245PWR type transceiver U4.
The output control module includes: the MOS tube control one-way output circuit, the MOS tube control two-way output circuit and the relay signal output circuit.
Specifically, as shown in fig. 11, the MOS transistor control unidirectional output circuit includes: an SN74HC00PWR type transceiver U2, a PC357 type photoelectric coupler D6 and an MOS tube Q2 output an energy storage control signal CNDJ _ A, an electromagnetic lock control signal DCS _ A and an illumination control signal DOLIGHTEN through an MOS tube control unidirectional output circuit; as shown in fig. 12, the MOS transistor control bidirectional output circuit includes: the controller comprises a PC357 type photoelectric coupler D10, a PC357 type photoelectric coupler D11, an SN74HC00PWR type transceiver U10, an MOS tube Q7, an MOS tube Q8, an MOS tube Q9, an MOS tube Q10, a triode Q4 and a triode Q5, and a bidirectional output circuit is controlled by the MOS tube to output a brake-separating control signal FZ and a brake-closing control signal HZ; as shown in fig. 13, the relay signal output circuit includes: the relay HDF23 and the triode Q1 output the switching signal of the remote knob through the relay signal output circuit.
Example 2
On the basis of embodiment 1, this embodiment 2 provides a working method of a ring main unit control system, including: acquiring state data of the power equipment through a signal acquisition module, and sending the state data to a control module; and controlling the indicating module to indicate the state data through the control module.
Specifically, the specific working principle and the circuit structure of the signal acquisition module, the communication module, the control module and the indication module are described in embodiment 1, and are not described herein again.
In conclusion, the ring main unit control system performs signal logic judgment through the control module, the MOS tube performs output control, and a logic interlocking function is realized without using complex secondary wiring, and the ring main unit control system integrates a data display function, a buzzer function, a brake-off control function, a switch-on control function, an energy storage control function, an electromagnetic lock control function, an illumination control function, a current acquisition function or a voltage acquisition function, so that complex secondary wiring between electrical elements is avoided; furthermore, the ring main unit control system has an RS485 communication function, and can remotely send out the state information of the power equipment to realize remote monitoring; in addition, the ring main unit control system also has a motor locked-rotor protection function, and when equipment breaks down, the ring main unit control system stops working and reports alarm information.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A ring main unit control system, comprising:
the device comprises a control module, a signal acquisition module and an indication module; wherein
The signal acquisition module is suitable for acquiring state data of the power equipment and sending the state data to the control module; and
the control module is adapted to control the indication module to indicate status data.
2. The ring main unit control system according to claim 1,
the signal acquisition module includes: the circuit comprises a switch state sampling circuit, a voltage signal acquisition circuit, a current signal acquisition circuit and an overcurrent signal acquisition circuit.
3. The ring main unit control system according to claim 1,
the indication module comprises: the display submodule and the buzzer submodule;
the display submodule is suitable for displaying status data; and
and when the state data is abnormal, the control module is suitable for controlling the buzzer submodule to buzz so as to give an alarm.
4. The ring main unit control system according to claim 1,
the ring main unit control system further comprises: the communication module is connected with the control module;
the control module is suitable for sending the state data of the power equipment to an upper computer through the communication module.
5. The ring main unit control system according to claim 4,
the communication module includes: RS485 communication circuit.
6. The ring main unit control system according to claim 1,
the ring main unit control system further comprises: the device comprises an operation module and an output control module;
the operation module is suitable for sending an operation instruction signal to the control module; and
the control module is suitable for controlling the output control module to execute the operation instruction according to the operation instruction signal.
7. The ring main unit control system according to claim 6,
the operation module comprises: local button signal acquisition circuit and distant place knob signal acquisition circuit.
8. The ring main unit control system according to claim 6,
the output control module includes: the MOS tube control one-way output circuit, the MOS tube control two-way output circuit and the relay signal output circuit.
9. The ring main unit control system according to claim 6,
the operation instruction signal includes:
the system comprises an opening signal, a closing signal, an energy storage signal, an electromagnetic lock signal and an illumination signal.
10. A working method of a ring main unit control system is characterized by comprising the following steps:
acquiring state data of the power equipment through a signal acquisition module, and sending the state data to a control module; and
and controlling an indicating module to indicate the state data through the control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010284125.7A CN111736498A (en) | 2020-04-13 | 2020-04-13 | Ring main unit control system and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010284125.7A CN111736498A (en) | 2020-04-13 | 2020-04-13 | Ring main unit control system and working method thereof |
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| CN111736498A true CN111736498A (en) | 2020-10-02 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1148608A2 (en) * | 2000-04-18 | 2001-10-24 | Alstom | Improvements in or relating to ring main units |
| KR20140009816A (en) * | 2012-07-13 | 2014-01-23 | 현대중공업 주식회사 | Ring main unit control board |
| CN104577743A (en) * | 2015-01-20 | 2015-04-29 | 航天科工深圳（集团）有限公司 | Ring main unit and operating mechanism thereof |
| CN206411488U (en) * | 2017-01-05 | 2017-08-15 | 福建国青电力科技有限公司 | A kind of Intelligent switch controller |
| CN108462255A (en) * | 2018-04-02 | 2018-08-28 | 安徽广祺智能电器股份有限公司 | A kind of cable high-voltage ring main unit monitor control system and its implementation |
| CN110707825A (en) * | 2019-11-12 | 2020-01-17 | 厦门明翰电气股份有限公司 | Ring main unit programmed control system and method |
-
2020
- 2020-04-13 CN CN202010284125.7A patent/CN111736498A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1148608A2 (en) * | 2000-04-18 | 2001-10-24 | Alstom | Improvements in or relating to ring main units |
| KR20140009816A (en) * | 2012-07-13 | 2014-01-23 | 현대중공업 주식회사 | Ring main unit control board |
| CN104577743A (en) * | 2015-01-20 | 2015-04-29 | 航天科工深圳（集团）有限公司 | Ring main unit and operating mechanism thereof |
| CN206411488U (en) * | 2017-01-05 | 2017-08-15 | 福建国青电力科技有限公司 | A kind of Intelligent switch controller |
| CN108462255A (en) * | 2018-04-02 | 2018-08-28 | 安徽广祺智能电器股份有限公司 | A kind of cable high-voltage ring main unit monitor control system and its implementation |
| CN110707825A (en) * | 2019-11-12 | 2020-01-17 | 厦门明翰电气股份有限公司 | Ring main unit programmed control system and method |
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Application publication date: 20201002 |
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