CN106712303B - Breaker operating mechanism box - Google Patents
Breaker operating mechanism box Download PDFInfo
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- CN106712303B CN106712303B CN201710098694.0A CN201710098694A CN106712303B CN 106712303 B CN106712303 B CN 106712303B CN 201710098694 A CN201710098694 A CN 201710098694A CN 106712303 B CN106712303 B CN 106712303B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 79
- 238000004146 energy storage Methods 0.000 claims abstract description 73
- 230000009471 action Effects 0.000 claims abstract description 55
- 238000004891 communication Methods 0.000 claims abstract description 52
- 238000012806 monitoring device Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 2
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- 206010063385 Intellectualisation Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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- H02J13/0013—
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a breaker operating mechanism box, which is characterized by comprising: the device comprises a communication module, a control module, a tripping mechanism, a closing mechanism, an energy storage device and a power supply module for supplying power to the communication module and the control module; the communication module receives the command and uploads signals corresponding to the received command to the control module, and the control module outputs one or more signals of a closing permission signal, a closing action signal, a tripping permission signal, a tripping action signal, an energy storage permission signal and an energy storage action signal, and the signals are mutually matched or independently used for controlling the tripping mechanism, the closing mechanism and the energy storage device to act. The invention solves the problems that the secondary control loop of the conventional circuit breaker is separated from the operating mechanism box body, signals are transmitted through a large number of cables, and the reliability of the circuit breaker is reduced due to excessive conversion links.
Description
Technical Field
The invention relates to an operating mechanism box, in particular to a breaker operating mechanism box.
Background
The power industry is basic industry and public utility for supporting national economy and social development, and along with the rapid development of national economy and continuous improvement of the living standard of people, the dependence on power is higher and higher. In order to realize numerous benefits such as reliability, safety, economy, high efficiency and the like of the power grid, the strong construction of the intelligent power grid is the main development direction of a future power system. And the circuit breaker is used as the most important control element in the power system, and the intellectualization of the circuit breaker plays a vital role in promoting the intellectualization of the whole power grid.
A circuit breaker is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and capable of closing, carrying and breaking a current under abnormal circuit conditions for a prescribed time. The operating mechanism box of the circuit breaker is a mechanical operating device which is independent of the circuit breaker body and is used for operating the circuit breaker, and the main task of the operating mechanism box is to convert other forms of energy into mechanical energy so that the circuit breaker can accurately perform opening and closing operations.
The invention is mainly concentrated on machines and components, and more depends on new materials, new technology appears, the action performance and cost of the circuit breaker are optimized in terms of structure or material performance, and the technology such as network communication and a processor are not really and organically combined with the circuit breaker, so that the circuit breaker is truly and intelligently controlled.
At present, a conventional breaker operating mechanism box is characterized in that a large number of signals in the mechanism box are connected to a control cabinet nearby a breaker through a large number of cables to complete an operating loop, a interlocking loop and the like, external electric signals are connected in, and the external electric signals act on a switching-on coil and a tripping coil after passing through a large number of conventional control loops matched with mechanical auxiliary switches and auxiliary relays to control switching-on and switching-off actions of the breaker.
In the whole control and signal feedback process, the transmission of signals can pass through a large number of components such as cables, terminals, relays and the like, so that the reliability of the circuit breaker is affected. The large number of cables increases the wiring and debugging effort. Statistics show that the faults of the secondary circuit of the circuit breaker are important factors of the faults of the circuit breaker. At present, the intelligent terminal and other devices installed in the control cabinet do not reduce the external cable signals of the circuit breaker, and the reliability of the circuit is not improved essentially.
Therefore, a breaker operating mechanism box needs to be presented at present, the secondary control loop of the breaker is organically combined with the computer control technology and the network communication technology, and the secondary electric control loop in the mechanism box is simplified, so that the reliability of the breaker is improved.
Disclosure of Invention
The invention provides an operating mechanism box of a circuit breaker, and aims to solve the problem that the reliability of the circuit breaker is reduced due to excessive conversion links when a secondary control loop of a conventional circuit breaker is separated from an operating mechanism box body at present and signals are transmitted through a large number of cables.
The invention provides a breaker operating mechanism box, comprising: the device comprises a communication module, a control module, a tripping mechanism, a closing mechanism, an energy storage device and a power supply module for supplying power to the communication module and the control module;
The communication module receives the command and uploads signals corresponding to the received command to the control module, and the control module outputs one or more signals of a closing permission signal, a closing action signal, a tripping permission signal, a tripping action signal, an energy storage permission signal and an energy storage action signal, and the signals are mutually matched or independently used for controlling the tripping mechanism, the closing mechanism and the energy storage device to act.
In a specific embodiment of the present invention, the communication module includes N communication interfaces, where N is a natural number.
In a specific embodiment of the present invention, the control module includes M processors, where M is a natural number.
In a specific embodiment of the present invention, any one of the M processors may be connected to any one or more of the N communication interfaces.
In a specific embodiment of the present invention, the trip mechanism receives 1 to x trip permission signals or trip action signals sent by the M processors, where the 1 to x trip permission signals or trip action signals are logically and processed, and when the 1 to x trip permission signals and the trip action signals output valid states, a trip coil in the trip mechanism drives the trip mechanism to complete a trip action, and x is a natural number.
In a specific embodiment of the present invention, the switching-on mechanism receives 1 to y switching-on permission signals or switching-on action signals sent by the M processors, where the 1 to y switching-on permission signals or the switching-on action signals perform logic and processing, and when the 1 to y switching-on permission signals and the switching-on action signals output valid states, a switching-on coil in the switching-on mechanism drives the switching-on mechanism to complete switching-on action, and y is a natural number.
In a specific embodiment of the present invention, the energy storage device receives 1 to z energy storage permission signals or energy storage action signals sent by the M processors, where z is a natural number, the 1 to z energy storage permission signals or energy storage action signals are logically and processed, and when the 1 to z energy storage permission signals and the energy storage action signals are in an effective state, an energy storage motor in the energy storage device acts to drive the energy storage device to store energy, and the energy stored is used for opening and closing the circuit breaker.
In one embodiment of the invention, the invention further comprises a switch position indicating device which can indicate that the switch is currently in a switch-off or switch-on position and provide a switch position indicating signal,
And the control module outputs signals according to the signals sent by the switch position indicating device and the signals sent by the communication module.
In a specific embodiment of the invention, the device further comprises an energy storage monitoring device, wherein the energy storage monitoring device is matched with the energy storage device and reflects the energy storage condition of the energy storage device;
and the control module outputs signals according to the signals sent by the energy storage monitoring device and the signals sent by the communication module.
The technical scheme of the invention has the following advantages: the invention directly processes various information required by the operation of the circuit breaker by the control module arranged in the circuit breaker equipment, so that the circuit breaker can independently execute various control functions through the operating mechanism box of the circuit breaker without depending on an external control cabinet and a large number of cables, thereby greatly simplifying the secondary circuit of the circuit breaker and improving the reliability and the safety of a secondary system of a transformer substation. Meanwhile, the installation and debugging process of the whole breaker can be simplified, because the control unit is arranged in the mechanism box of the breaker, a large amount of external wiring work is not needed during debugging, the in-plant debugging workload and the on-site construction debugging workload can be reduced, and the transportation of equipment is facilitated.
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 embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other implementations may be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of a circuit breaker operating mechanism case of the present invention;
FIGS. 2a and 2b are schematic illustrations of two embodiments of the communication interface of the present invention;
FIG. 3 is a schematic diagram of an embodiment of a signal redundancy processing scheme according to the present invention;
FIG. 4 is a schematic diagram of signal connection between a control module and a tripping mechanism, a closing mechanism and an energy storage device;
FIG. 5 is a schematic view of an embodiment of an opening/closing mechanism according to the present invention;
FIG. 6 is a schematic view of another embodiment of the opening/closing mechanism of the present invention;
FIGS. 7a and 7b are schematic views of an exemplary embodiment of an opening/closing mechanism according to the present invention;
FIGS. 8a and 8b are schematic views of an exemplary embodiment of an opening/closing mechanism according to the present invention;
fig. 9a and 9b are schematic views of an energy storage device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, an embodiment of the present invention provides a breaker operating mechanism box, which includes a power module 11, a communication module 12, a control module 13, a trip mechanism 14, a closing mechanism 15, an energy storage device 16, a switch position indicating device 17, and an energy storage monitoring device 18. The power module 11 provides working power for the communication module 12 and the control module 13.
The communication module 12 of the present invention includes N redundant communication interfaces, where N is a natural number. The communication interface can adopt an electrical communication interface, such as RS485, RS422 and 10/100/1000Base-T network interfaces; or a fiber optic communication interface such as a 10/100/1000Base-Fx fiber optic ethernet interface, etc. External signals can be connected to the communication interface of the communication module 12 through an electrical bus or an optical fiber bus, and signals in the mechanism box can also be transmitted to the outside through the communication interface.
Fig. 2 shows two embodiments of the communication module 12. Referring to fig. 2a, the communication module 12 includes n redundant communication interfaces in one-to-one correspondence with communication media. Referring to fig. 2b, the communication module 12 includes a redundant n number of communication interfaces sharing a communication medium to which communication signals enter the chassis and are electrically connected at the same time.
The control module 13 of the present invention includes M redundant processors, where M is a natural number. Referring to fig. 1, the N communication interfaces are connected to the M processors. When the number of the communication interfaces is 1, the M processors share 1 communication interface; when the number of the communication interfaces is plural, the M processors are respectively connected with any one (one or more) of the communication interfaces.
Fig. 3 shows an embodiment of a solution in which the communication module 12 has 2 communication interfaces and the control module 13 has 2 processors. The 2 communication interfaces each provide data to a corresponding processor, the processors each provide independent command outputs to subsequent control loops, and the switch position indicating device 17 and the stored energy monitoring device 18 provide monitoring signals to the processors.
In the invention, the tripping mechanism 14, the closing mechanism 15 and the energy storage device 16 are controlled by control signals output by the control module 13.
Referring to fig. 4, the control module 13 includes M processors, which are arbitrarily connected to 1 or more of N communication interfaces, implementing redundancy of the communication interfaces and the processors. The M processors receive tripping, closing and energy storage action commands through the connected communication interfaces, and collect one or more signals of status signals provided by the switch position indicating device 17 and elements in the energy storage monitoring device 18 and other mechanisms. After being processed and synthesized by the M processors, each processor can output one or more signals of a closing permission signal, a closing action signal, a tripping permission signal, a tripping action signal, an energy storage permission signal and an energy storage action signal, and each signal can mutually cooperate or independently control the on-off of a tripping circuit, a closing circuit and an energy storage circuit in the operating mechanism box, so that the action of the circuit breaker is controlled.
The tripping mechanism 14 controls the tripping action to be completed through 1 to x tripping permission signals or tripping action signals sent by the M processors, and x is a natural number. A plurality of trip enable signals or trip action signals are from one or more of the M processors, and when both of these trip enable signals and trip action signals are in an active state, the trip circuit is turned on, driving the trip coil, effecting the action of the trip mechanism 14. The active state, i.e., the corresponding processor drive signal, indicates that the trip mechanism 14 requires action when in that state.
The closing mechanism 15 is similar to the tripping mechanism 14, and 1 to y closing permission signals or closing action signals sent by M processors are input to the closing mechanism 15, where y is a natural number. When the switching-on permission signal and the switching-on action signal are both valid, the switching-on loop is conducted, the switching-on coil is driven, and then the switching-on mechanism action of the switching-on mechanism 15 is realized.
Fig. 5 to 8 are partial embodiments of the trip/close signal provided by the control module 13 to control the trip/close of the trip/close mechanism.
Referring to fig. 5, the trip/close of the trip/close mechanism is controlled by two signals through and logic, wherein the two signals can be from the same 1 processor or from 2 processors. The specific implementation method comprises the following steps: the signal 1 and the signal 2 drive independent relays (or electronic switch loops), output contacts of the controlled relays (or output loops of the electronic switch loops) are connected in series, and when the signal 1 and the signal 2 (two tripping or closing permission/action signals) are effective, the loop where the tripping/closing loop is located is conducted, so that the tripping/closing mechanism is driven to act.
Referring to fig. 6, signal 1 and signal 2 respectively control the conduction of the positive power supply and the negative power supply of the same relay (or electronic switch loop), the output contact of the controlled relay (or the output loop of the electronic switch loop) is connected in series with the loop where the trip/close loop is located, and when signal 1 and signal 2 (which are both tripping or closing permission/action signals) are valid, the relay acts, the trip/close loop is conducted, and the trip/close mechanism is driven to act.
In the embodiments shown in fig. 7a, 7b, 8a and 8b, based on fig. 4 and 5, a normally closed auxiliary contact in a circuit where a trip coil is located is connected in series with a normally closed auxiliary contact in a circuit where a trip coil is located, and a normally closed auxiliary contact in a circuit where a trip coil is located is connected in series with a normally closed auxiliary contact in a circuit where a trip circuit is located. When the breaker is switched on or off in place, the normally closed contact is opened, so that the current of a loop where tripping/switching on is located is disconnected, and the contact of the relay shown in the embodiment is protected, so that the contact of the relay is prevented from being burnt out due to arc discharge.
The energy storage device 16 receives 1 to z energy storage permission signals or energy storage action signals sent by the M processors, where the 1 to z energy storage permission signals or energy storage action signals are logically and processed, and z is a natural number. When the energy storage permission signals and the energy storage action signals are in effective states, the energy storage motor in the energy storage device acts to drive the energy storage device to store energy, and the energy storage energy is used for opening and closing actions of the circuit breaker.
Fig. 9a and 9b are embodiments of a control loop of the energy storage device 16, and the control principle is similar to that of the tripping/closing loop, and will not be repeated.
In general, for important tripping and closing circuits, at least 2 signals are selected to cooperate for control, and for the energy storage circuit, the reliability requirement is lower, and 1 signal control can be satisfied. Each processor may be operative to output one or more of the control signals described above, which is associated with a particular allocation of functionality to the processor, and is within the scope of the present invention.
Alternative embodiments are: the tripping allowing signal, the closing allowing signal and the energy storage allowing signal are one or two common signals, which are called starting signals, other processors output tripping/closing signals and energy storage signals, and the tripping/closing signals and the energy storage signals can only be output to work under the condition that the starting signals are valid, so that the implementation is also within the protection scope of the invention.
The switch position indicating device 17 is matched with the tripping/closing mechanism and can be used as an auxiliary switch to intuitively transmit the state information of the circuit breaker to the outside, and meanwhile, the state information can also be provided for an operating mechanism box of the circuit breaker, namely, the state information is sent to the processor as an operation condition, and the processor is connected in series with a secondary control loop to form the state information of logic locking. Similarly, the energy storage device 16 is recorded by the energy storage monitoring device 18 (e.g., travel switch, etc.) and uploaded to a processor as a lockout condition for other actions of the circuit breaker. Other status signals in the mechanism box are transmitted to the processor or directly connected in series into the control loop, and the protection scope of the invention also belongs to the protection scope of the invention.
There are one or several exemplary embodiments of each module of the present invention, and any combination of the modules may be used to increase the kinds of methods implemented, which are all within the scope of the present invention.
Claims (7)
1. A circuit breaker operating mechanism case, comprising: the device comprises a communication module, a control module, a tripping mechanism, a closing mechanism, an energy storage device and a power supply module for supplying power to the communication module and the control module;
The communication module receives the command and transmits signals corresponding to the received command to the control module, and the control module outputs one or more signals of a closing permission signal, a closing action signal, a tripping permission signal, a tripping action signal, an energy storage permission signal and an energy storage action signal, wherein the signals are mutually matched or independently used for controlling the tripping mechanism, the closing mechanism and the energy storage device to act;
the control module includes a processor;
The tripping mechanism receives 1 to x tripping permission signals or tripping action signals sent by M processors, the 1 to x tripping permission signals or tripping action signals drive independent relays, the output contacts of the controlled relays are connected in series, and when the 1 to x tripping permission signals and the tripping action signals output effective states, a loop where a tripping coil in the tripping mechanism is located is conducted to drive the tripping mechanism to finish tripping action;
Or the tripping mechanism receives 2 tripping permission signals or tripping action signals sent by 1 processor or 2 processors, the 2 tripping permission signals or tripping action signals respectively control the positive power supply and the negative power supply of the same relay, the output contact of the controlled relay is connected in series with a loop where a tripping coil is located, and when the 2 tripping permission signals and the tripping action signals are in an effective state, the loop where the tripping coil is located is conducted to drive the tripping mechanism to finish tripping action;
And when the circuit breaker trips in place, the normally closed auxiliary contact is disconnected, and the current of the circuit where the tripping is located is disconnected.
2. The operator box of claim 1, wherein the communication module comprises N communication interfaces, wherein N is a natural number.
3. An operating mechanism box according to claim 2 wherein any one of said M processors is connected to any one or more of said N communications interfaces.
4. The operation mechanism box according to claim 1, wherein the switching-on mechanism receives 1 to y switching-on permission signals or switching-on action signals sent by the M processors, the 1 to y switching-on permission signals or the switching-on action signals are logically and processed, and when the 1 to y switching-on permission signals and the switching-on action signals output valid states, a switching-on coil in the switching-on mechanism drives the switching-on mechanism to complete switching-on action, and y is a natural number.
5. The operation mechanism box according to claim 4, wherein the energy storage device receives 1 to z energy storage permission signals or energy storage operation signals sent by the M processors, z is a natural number, the 1 to z energy storage permission signals or the energy storage operation signals are logically and processed, when the 1 to z energy storage permission signals and the energy storage operation signals are in an effective state, an energy storage motor in the energy storage device acts to drive the energy storage device to store energy, and the energy storage energy is used for opening and closing the circuit breaker.
6. The operating mechanism box according to any one of claims 1 to 5, further comprising a switch position indicating device capable of indicating whether the switch is currently in an open or closed position and providing a switch position indicating signal,
And the control module outputs signals according to the signals sent by the switch position indicating device and the signals sent by the communication module, and sends the switch position signals to external control equipment through the communication module.
7. The operating mechanism box of any one of claims 1 to 5, further comprising an energy storage monitoring device, the energy storage monitoring device cooperating with the energy storage device to reflect an energy storage condition of the energy storage device;
and the control module outputs signals according to the signals sent by the energy storage monitoring device and the signals sent by the communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710098694.0A CN106712303B (en) | 2017-02-23 | 2017-02-23 | Breaker operating mechanism box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710098694.0A CN106712303B (en) | 2017-02-23 | 2017-02-23 | Breaker operating mechanism box |
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| CN106712303A CN106712303A (en) | 2017-05-24 |
| CN106712303B true CN106712303B (en) | 2024-07-02 |
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| CN201710098694.0A Active CN106712303B (en) | 2017-02-23 | 2017-02-23 | Breaker operating mechanism box |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108649531B (en) * | 2018-05-10 | 2019-11-12 | 许继集团有限公司 | A kind of double loop acquisition tripping interface arrangement |
| CN110120325A (en) * | 2019-06-13 | 2019-08-13 | 南京飞兆电子科技有限公司 | A kind of dual redundant high-voltage breaker permanent magnet switch controller and control method |
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| CN2645324Y (en) * | 2003-04-30 | 2004-09-29 | 广州市亿力电气科技有限公司 | High voltage breaker secondary circuit total operating mode monitoring arrangement |
| CN201886918U (en) * | 2010-11-19 | 2011-06-29 | 西安英丰电气有限责任公司 | Spring operating mechanism for longitudinal arrangement of high-voltage circuit breakers |
| CN203164737U (en) * | 2013-04-09 | 2013-08-28 | 中国西电电气股份有限公司 | Intelligent circuit breaker monitoring unit |
| CN206685967U (en) * | 2017-02-23 | 2017-11-28 | 苏州云电电力科技有限公司 | A kind of circuit breaker operation mechanism case |
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2017
- 2017-02-23 CN CN201710098694.0A patent/CN106712303B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645324Y (en) * | 2003-04-30 | 2004-09-29 | 广州市亿力电气科技有限公司 | High voltage breaker secondary circuit total operating mode monitoring arrangement |
| CN201886918U (en) * | 2010-11-19 | 2011-06-29 | 西安英丰电气有限责任公司 | Spring operating mechanism for longitudinal arrangement of high-voltage circuit breakers |
| CN203164737U (en) * | 2013-04-09 | 2013-08-28 | 中国西电电气股份有限公司 | Intelligent circuit breaker monitoring unit |
| CN206685967U (en) * | 2017-02-23 | 2017-11-28 | 苏州云电电力科技有限公司 | A kind of circuit breaker operation mechanism case |
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