CN111864702A - Device and method for protecting circuit breaker coil - Google Patents
Device and method for protecting circuit breaker coil Download PDFInfo
- Publication number
- CN111864702A CN111864702A CN202010680077.3A CN202010680077A CN111864702A CN 111864702 A CN111864702 A CN 111864702A CN 202010680077 A CN202010680077 A CN 202010680077A CN 111864702 A CN111864702 A CN 111864702A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- coil
- circuit
- breaking
- timing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/027—Details with automatic disconnection after a predetermined time
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention discloses a device and a method for protecting a circuit breaker coil, and relates to the technical field of high-voltage electrical equipment maintenance; the device comprises a timing circuit breaker device which is connected in series with a circuit breaker coil and is used for timely disconnecting the circuit breaker coil according to circuit breaking after knowing the conduction current of the circuit breaker coil; the method comprises the steps of timing circuit breaking, wherein circuit breaking timing is preset, and the circuit breaker coil is broken according to the circuit breaking timing after the timing circuit breaking device acquires the conduction current of the circuit breaker coil; the circuit breaker coil is connected in series and used for knowing a timing circuit breaking device and the like for regularly breaking the circuit breaker coil according to circuit breaking after the circuit breaker coil conducts current, so that the circuit breaker coil is protected and is not easy to burn out.
Description
Technical Field
The invention relates to the technical field of high-voltage electrical equipment maintenance, in particular to a device and a method for protecting a circuit breaker coil.
Background
High voltage circuit breakers are important devices in power systems, and the operational reliability thereof is crucial to the protection and control of the power grid. The circuit breaker can switch on or off load current when the power system normally operates; when short-circuit fault or serious overload occurs in electrical equipment or lines, the circuit breaker can be controlled by a relay protection device to rapidly cut off fault current so as to prevent the expansion of an accident range. In order to ensure the stable and reliable operation of the circuit breaker, a coil for controlling opening and closing in a circuit breaker control loop, hereinafter referred to as a circuit breaker coil, must work reliably and normally.
The circuit breaker coil is used as a core element in a circuit breaker control circuit, and if the electricity obtaining time of the coil exceeds a certain degree, the self heat generation amount of the coil is too large, and the coil is burnt. In recent years, the amount of coil burnout of circuit breakers due to circuit breaker failure, insulation degradation, and the like has been rapidly increasing.
The failure of the breaker leads to the coil being electrified all the time, thus causing the reaction processing time of operation and maintenance staff to be extremely short, often not reaching the site, and the coil being burnt. The coil burning damage can seriously damage other secondary components and secondary lines in the mechanism box, and the rush repair working time is prolonged. In addition, the serious burning loss even can cause equipment to catch fire, and cause irreversible damage to the circuit breaker, not only bring huge economic loss, more seriously influence the personal, electric wire netting and equipment safety.
The private internet is an internet used by power company departments.
Problems with the prior art and considerations:
how to solve the technical problem that the circuit breaker coil is easy to break.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device and a method for protecting a circuit breaker coil, wherein the device and the method are used for protecting the circuit breaker coil and are not easy to burn out by a timing circuit breaking device and the like which are connected in series into the circuit breaker coil and are used for obtaining the circuit breaker coil conducting current and then breaking the circuit breaker coil according to circuit breaking timing.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a device for protecting a circuit breaker coil includes a timed circuit interrupting device connected in series into the circuit breaker coil and used for timely interrupting the circuit breaker coil according to an interruption after learning that the circuit breaker coil conducts current.
The further technical scheme is as follows: the circuit breaker further comprises a timing circuit breaking module, a circuit breaker coil and a circuit breaker control module, wherein the timing circuit breaking module is used for acquiring circuit breaking timing by a timing circuit breaking device, and the timing circuit breaking device breaks the circuit breaker coil according to the circuit breaking timing after knowing the conduction current of the circuit breaker coil; the breaking timing is the time from when the breaker coil conducts current to when the breaker coil is disconnected.
The further technical scheme is as follows: the timing circuit breaking device is a time relay.
The further technical scheme is as follows: the current transformer and the signal collector are used for obtaining current information in the circuit breaker coil, and the current information obtaining module is used for obtaining current information in the circuit breaker coil through the current transformer.
The further technical scheme is as follows: the signal collector is connected with the communication device and is in one-way communication with the communication device to obtain the current information module, and the signal collector is used for sending current information through the communication device.
The further technical scheme is as follows: the communication device is a wireless communication device.
The further technical scheme is as follows: the system comprises a signal collector, a signal acquisition device, a display module and a power supply module, wherein the signal acquisition device is connected with the integrated machine and is in one-way communication with the integrated machine, and the display module is used for acquiring and displaying current information by the integrated machine.
The further technical scheme is as follows: still include power supply unit, interface converter and POE interface, the first port that timing circuit breaker passed through interface converter is connected to power supply unit, current transformer passes through interface converter's second port and is connected to power supply unit, power supply unit passes through POE interface connection to signal collector.
A method for protecting a coil of a circuit breaker comprises the steps of timing circuit breaking, presetting circuit breaking timing, and breaking the coil of the circuit breaker according to the circuit breaking timing after a timing circuit breaking device obtains conducting current of the coil of the circuit breaker.
The further technical scheme is as follows: the method also comprises the following steps of acquiring current information, and acquiring and transmitting the current information in the coil of the circuit breaker; and a display step, receiving and displaying the current information.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
a device for protecting a circuit breaker coil includes a timed circuit interrupting device connected in series into the circuit breaker coil and used for timely interrupting the circuit breaker coil according to an interruption after learning that the circuit breaker coil conducts current. The circuit breaker coil is connected in series and used for knowing a timing circuit breaking device and the like for regularly breaking the circuit breaker coil according to circuit breaking after the circuit breaker coil conducts current, so that the circuit breaker coil is protected and is not easy to burn out.
A method for protecting a coil of a circuit breaker comprises the steps of timing circuit breaking, presetting circuit breaking timing, and breaking the coil of the circuit breaker according to the circuit breaking timing after a timing circuit breaking device obtains conducting current of the coil of the circuit breaker. The circuit breaker coil is protected through the steps of timed circuit breaking and the like, and the circuit breaker coil is not easy to burn out.
See detailed description of the preferred embodiments.
Drawings
Fig. 1 is a circuit schematic diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic block diagram of embodiment 2 of the present invention;
FIG. 3 is a schematic block diagram of embodiment 3 of the present invention;
FIG. 4 is a schematic block diagram of embodiment 4 of the present invention;
FIG. 5 is a schematic block diagram of embodiment 5 of the present invention;
FIG. 6 is a schematic block diagram of embodiment 6 of the present invention;
fig. 7 is a flowchart of embodiment 7 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
Example 1:
as shown in fig. 1, the invention discloses a device for protecting a circuit breaker coil, which comprises a timing circuit breaker device which is connected in series with the circuit breaker coil L and is used for timely breaking the circuit breaker coil L according to circuit breaking after knowing that the circuit breaker coil L conducts current, wherein the timing circuit breaker device is a time relay KT, and a normally closed contact KT-1 of the time relay KT is connected in series with a lead of the circuit breaker coil L.
The time relay KT itself and the corresponding electrical connection technology are not described herein in detail for the prior art.
Example 1 illustrates that:
the normally closed contact KT-1 of the time relay KT is connected in series with a lead of a circuit breaker coil L, the normally closed contact KT-1 is in a conducting state at the moment, the circuit breaker coil L is in a conducting state but has no current, and the circuit breaking timing of the time relay KT is manually set to be 5 seconds.
When the relay protection device controls the action of the circuit breaker through the control circuit, current flows through a normally closed contact KT-1 of the time relay KT in the circuit breaker coil L, the time relay KT learns that the circuit breaker coil L conducts the current, after 5 seconds of delay, the time relay KT opens the normally closed contact KT-1, and the circuit breaker coil L has no current for an off state, so that the circuit breaker coil L is effectively prevented from being burnt out, and the technical problem that the circuit breaker coil is easy to burn out is solved.
Example 2:
the embodiment 2 is different from the embodiment 1 in that the circuit breaker further comprises a timing breaking module, wherein the timing breaking module is used for acquiring breaking timing by a timing breaking device, and the timing breaking device breaks a circuit breaker coil according to breaking timing after acquiring conduction current of the circuit breaker coil; the breaking timing is the time from when the breaker coil conducts current to when the breaker coil is disconnected.
As shown in fig. 2, the present invention discloses a device for protecting a circuit breaker coil, which comprises a timing circuit breaker device and a timing circuit breaker module, wherein the timing circuit breaker device is connected in series with the circuit breaker coil L and is used for timely disconnecting the circuit breaker coil L according to circuit breaking after the circuit breaker coil L is informed of current conduction, the timing circuit breaker device is a time relay KT, a normally closed contact KT-1 of the time relay KT is connected in series with a lead of the circuit breaker coil L, and the timing circuit breaker module is a program module.
The timing circuit-breaking module is used for the time relay KT to obtain circuit-breaking timing, and the time relay KT breaks the circuit breaker coil L according to the circuit-breaking timing after knowing the conducting current of the circuit breaker coil L; the breaking timing is a time from when the breaker coil L conducts current to when the breaker coil L is disconnected.
The time relay KT itself and the corresponding electrical connection technology are not described herein in detail for the prior art.
Example 2 illustrates that:
the normally closed contact KT-1 of the time relay KT is connected in series with a lead of a circuit breaker coil L, the normally closed contact KT-1 is in a conducting state at the moment, the circuit breaker coil L is in a conducting state but has no current, and the circuit breaking timing of the time relay KT is manually set to be 5 seconds.
When the relay protection device controls the action of the circuit breaker through the control circuit, current flows through a normally closed contact KT-1 of the time relay KT in the circuit breaker coil L, the time relay KT learns that the circuit breaker coil L conducts the current, after 5 seconds of delay, the time relay KT opens the normally closed contact KT-1, and the circuit breaker coil L has no current for an off state, so that the circuit breaker coil L is effectively prevented from being burnt out, and the technical problem that the circuit breaker coil is easy to burn out is solved.
Example 3:
embodiment 3 differs from embodiment 2 in that, the current transformer and the signal collector for obtaining current information in the circuit breaker coil and the current information obtaining module are further included, the current transformer and the signal collector are connected and in one-way communication, and the current information obtaining module is used for obtaining current information in the circuit breaker coil through the current transformer by the signal collector.
As shown in fig. 3, the invention discloses a device for protecting a circuit breaker coil, which comprises a timing circuit breaking device, a current transformer, a signal collector, a timing circuit breaking module and a current information obtaining module, wherein the timing circuit breaking device is connected in series with the circuit breaker coil L and is used for breaking the circuit breaker coil L according to circuit breaking timing after the circuit breaker coil L is informed of conducting current, the current transformer and the signal collector are used for obtaining current information in the circuit breaker coil L, the timing circuit breaking device is a time relay KT, a normally closed contact KT-1 of the time relay KT is connected in series with a lead of the circuit breaker coil L, the current transformer is positioned on one side of the circuit breaker coil L, and the.
The timing circuit-breaking module is used for the time relay KT to obtain circuit-breaking timing, and the time relay KT breaks the circuit breaker coil L according to the circuit-breaking timing after knowing the conducting current of the circuit breaker coil L; the breaking timing is a time from when the breaker coil L conducts current to when the breaker coil L is disconnected.
And the current information acquisition module is used for acquiring current information in the coil L of the circuit breaker by the signal acquisition device through the current transformer.
Wherein, time relay KT, current transformer and signal collector itself and corresponding communication connection technique are not repeated for prior art here.
Example 3 illustrates that:
the normally closed contact KT-1 of the time relay KT is connected in series with a lead of a circuit breaker coil L, the normally closed contact KT-1 is in a conducting state at the moment, the circuit breaker coil L is in a conducting state but has no current, and the circuit breaking timing of the time relay KT is manually set to be 5 seconds.
When the relay protection device controls the action of the circuit breaker through the control circuit, current flows through a normally closed contact KT-1 of the time relay KT in the circuit breaker coil L, the time relay KT learns that the circuit breaker coil L conducts the current, after 5 seconds of delay, the time relay KT opens the normally closed contact KT-1, and the circuit breaker coil L has no current for an off state, so that the circuit breaker coil L is effectively prevented from being burnt out, and the technical problem that the circuit breaker coil is easy to burn out is solved.
The signal collector obtains current information in the circuit breaker coil L through the current transformer, so that managers can conveniently research the corresponding relation between the current information in the circuit breaker coil L and the quality of the circuit breaker coil L.
Example 4:
embodiment 4 differs from embodiment 3 in that the current information acquisition device further includes a wireless communication device, the signal acquisition device is connected to the wireless communication device and performs unidirectional communication with the wireless communication device, and the current information acquisition module is further configured to transmit current information through the communication device by the signal acquisition device.
As shown in fig. 4, the invention discloses a device for protecting a circuit breaker coil, which comprises a timing circuit breaking device, a current transformer, a signal collector, a wireless communication device, a timing circuit breaking module and a current information obtaining module, wherein the timing circuit breaking device is connected in series with the circuit breaker coil L and is used for obtaining the on-state current of the circuit breaker coil L and then opening the circuit breaker coil L according to the circuit breaking timing, the current transformer is used for obtaining the current information in the circuit breaker coil L, the timing circuit breaking device is a time relay KT, a normally closed contact KT-1 of the time relay KT is connected in series with a lead of the circuit breaker coil L, the current transformer is positioned on one side of the circuit breaker coil L, the current transformer is connected with the signal collector and is in.
The timing circuit-breaking module is used for the time relay KT to obtain circuit-breaking timing, and the time relay KT breaks the circuit breaker coil L according to the circuit-breaking timing after knowing the conducting current of the circuit breaker coil L; the breaking timing is a time from when the breaker coil L conducts current to when the breaker coil L is disconnected.
And the current information acquisition module is used for acquiring current information in the circuit breaker coil L through the current transformer by the signal acquisition device, and the signal acquisition device sends the current information through the wireless communication device.
Wherein, time relay KT, current transformer, signal collector and wireless communication device itself and corresponding communication connection technique are not repeated herein for prior art.
Example 4 illustrates that:
the normally closed contact KT-1 of the time relay KT is connected in series with a lead of a circuit breaker coil L, the normally closed contact KT-1 is in a conducting state at the moment, the circuit breaker coil L is in a conducting state but has no current, and the circuit breaking timing of the time relay KT is manually set to be 5 seconds.
When the relay protection device controls the action of the circuit breaker through the control circuit, current flows through a normally closed contact KT-1 of the time relay KT in the circuit breaker coil L, the time relay KT learns that the circuit breaker coil L conducts the current, after 5 seconds of delay, the time relay KT opens the normally closed contact KT-1, and the circuit breaker coil L has no current for an off state, so that the circuit breaker coil L is effectively prevented from being burnt out, and the technical problem that the circuit breaker coil is easy to burn out is solved.
The signal collector obtains current information in the circuit breaker coil L through the current transformer, and the signal collector sends the current information through the wireless communication device. The manager can obtain the current information in the circuit breaker coil L more conveniently, so that the corresponding relation between the current information in the circuit breaker coil L and the quality of the circuit breaker coil L can be researched.
Example 5:
embodiment 5 differs from embodiment 4 in that it further includes a management terminal, the signal collector is connected and communicates with the management terminal through a wireless communication device and a dedicated internet, and the management terminal is a desktop computer.
As shown in FIG. 5, the present invention discloses a device for protecting a circuit breaker coil, which comprises a timing circuit breaker connected in series to the circuit breaker coil L and used for breaking the circuit breaker coil L according to the circuit breaking timing after knowing the current conducted by the circuit breaker coil L, a current transformer used for obtaining the current information in the circuit breaker coil L, a signal collector, a wireless communication device and a management terminal, and two program modules of a timing circuit breaking module and a current information obtaining module, the timing circuit breaking device is a time relay KT, a normally closed contact KT-1 of the time relay KT is connected in series with a lead of a coil L of the circuit breaker, the management terminal is a desktop computer, the current transformer is positioned on one side of the circuit breaker coil L and is connected with the signal collector and is in one-way communication, the signal collector is connected with the wireless communication device and is in one-way communication with the management terminal through the wireless communication device and the special internet.
The timing circuit-breaking module is used for the time relay KT to obtain circuit-breaking timing, and the time relay KT breaks the circuit breaker coil L according to the circuit-breaking timing after knowing the conducting current of the circuit breaker coil L; the breaking timing is a time from when the breaker coil L conducts current to when the breaker coil L is disconnected.
The current information acquisition module is used for acquiring current information in the circuit breaker coil L through the current transformer by the signal collector, and the signal collector sends the current information to the desktop computer through the wireless communication device.
Wherein, time relay KT, current transformer, signal collector, wireless communication device and desktop computer itself and corresponding communication connection technique are not repeated for prior art here.
Example 5 illustrates that:
the normally closed contact KT-1 of the time relay KT is connected in series with a lead of a circuit breaker coil L, the normally closed contact KT-1 is in a conducting state at the moment, the circuit breaker coil L is in a conducting state but has no current, and the circuit breaking timing of the time relay KT is manually set to be 5 seconds.
When the relay protection device controls the action of the circuit breaker through the control circuit, current flows through a normally closed contact KT-1 of the time relay KT in the circuit breaker coil L, the time relay KT learns that the circuit breaker coil L conducts the current, after 5 seconds of delay, the time relay KT opens the normally closed contact KT-1, and the circuit breaker coil L has no current for an off state, so that the circuit breaker coil L is effectively prevented from being burnt out, and the technical problem that the circuit breaker coil is easy to burn out is solved.
The signal collector obtains current information in the circuit breaker coil L through the current transformer, and the signal collector sends the current information to the desktop computer through the wireless communication device. The manager can more conveniently acquire and manage the current information in the circuit breaker coil L through the management terminal so as to research the corresponding relation between the current information in the circuit breaker coil L and the quality of the circuit breaker coil L.
Example 6:
embodiment 6 differs from embodiment 5 in that, still include power supply unit, interface converter, POE interface and all-in-one and display module, timing circuit breaker is connected to power supply unit through the first port of interface converter, current transformer is connected to power supply unit through the second port of interface converter, power supply unit passes through POE interface connection to signal collector, signal collector is connected and unidirectional communication with the all-in-one, and display module is used for the all-in-one to acquire current information and show.
As shown in fig. 6, the invention discloses a device for protecting a circuit breaker coil, which comprises a timing circuit breaking device, a current transformer, a signal collector, a wireless communication device, a management terminal, an interface converter, an integrated machine, a timing circuit breaking module, a current information obtaining module and a display module, wherein the timing circuit breaking device is connected in series with the circuit breaker coil L and is used for obtaining the on-state current of the circuit breaker coil L and then opening the circuit breaker coil L according to the circuit breaking timing, the timing circuit breaking device is a time relay KT, the management terminal is a desktop computer, a normally closed contact KT-1 of the time relay KT is connected in series with a lead of the circuit breaker coil L, the time relay KT is connected to a power supply device arranged in the interface converter through a first port of the interface converter, the current transformer is positioned on one side of the, the current transformer passes through interface converter's second port and is connected to the built-in power supply unit of interface converter, interface converter is connected to signal collector through its POE interface, and current transformer passes through interface converter and is connected and unidirectional communication with signal collector promptly, signal collector is connected and unidirectional communication with wireless communication device, and signal collector passes through wireless communication device and special internet and is connected and communicate with management terminal, and signal collector and all-in-one wired connection and unidirectional communication.
The timing circuit-breaking module is used for the time relay KT to obtain circuit-breaking timing, and the time relay KT breaks the circuit breaker coil L according to the circuit-breaking timing after knowing the conducting current of the circuit breaker coil L; the breaking timing is a time from when the breaker coil L conducts current to when the breaker coil L is disconnected.
The acquisition current information module is used for acquiring current information in a circuit breaker coil L through a current transformer by the signal collector, the signal collector sends the current information to a desktop computer through a wireless communication device, and the signal collector sends the current information to the integrated machine.
And the display module is used for acquiring and displaying the current information by the integrated machine.
Wherein, time relay KT, current transformer, interface converter, signal collector, all-in-one, wireless communication device and desktop computer itself and corresponding communication connection technique are no longer repeated here for prior art.
Example 6 illustrates that:
the normally closed contact KT-1 of the time relay KT is connected in series with a lead of a circuit breaker coil L, the normally closed contact KT-1 is in a conducting state at the moment, the circuit breaker coil L is in a conducting state but has no current, and the circuit breaking timing of the time relay KT is manually set to be 5 seconds.
When the relay protection device controls the action of the circuit breaker through the control circuit, current flows through a normally closed contact KT-1 of the time relay KT in the circuit breaker coil L, the time relay KT learns that the circuit breaker coil L conducts the current, after 5 seconds of delay, the time relay KT opens the normally closed contact KT-1, and the circuit breaker coil L has no current for an off state, so that the circuit breaker coil L is effectively prevented from being burnt out, and the technical problem that the circuit breaker coil is easy to burn out is solved.
The signal collector obtains current information in the circuit breaker coil L through the current transformer, and the signal collector sends the current information to the desktop computer through the wireless communication device. The manager can more conveniently acquire and manage the current information in the circuit breaker coil L through the management terminal so as to research the corresponding relation between the current information in the circuit breaker coil L and the quality of the circuit breaker coil L.
The signal collector sends current information to the all-in-one machine, and the all-in-one machine acquires the current information and displays the current information, so that field maintainers can conveniently check the current information in the coil L of the circuit breaker, and the use is more convenient.
Example 7:
as shown in fig. 7, the present invention discloses a method for protecting a coil of a circuit breaker, which is based on the apparatus of embodiment 6, and comprises the following steps:
s1 timed cut-off
The circuit-breaking timing of the manual setting time relay KT of the operation and maintenance personnel is 5 seconds, and the circuit-breaker coil is broken according to the circuit-breaking timing after the time relay KT learns the conducting current of the circuit-breaker coil.
S2 obtaining current information
The signal collector obtains current information in the circuit breaker coil L through the current transformer, the signal collector sends the current information to the desktop computer through the wireless communication device, and the signal collector sends the current information to the all-in-one machine.
S3 shows
The desktop computer receives and displays the current information, and the all-in-one machine receives and displays the current information.
With respect to embodiment 7, in the step of acquiring current information at S2, the signal collector may further acquire current information in the circuit breaker coil L through the current transformer and the power supply device.
The invention concept of the application is as follows:
the circuit breaker coil is connected in series and used for knowing a timing circuit breaker device and the like which are used for regularly breaking the circuit breaker coil according to circuit breaking after the circuit breaker coil conducts current, circuit breaking timing is preset, the circuit breaker coil is regularly broken according to circuit breaking after the timing circuit breaker device learns the circuit breaker coil conducts current, the circuit breaker coil is protected, and the circuit breaker coil is not prone to being burnt out.
The purpose of the application is:
it is important to explore new methods or apparatus for efficiently detecting and reducing the number of circuit breaker coil burns.
The characteristics of this application:
the system comprises a time relay, an interface converter, a current transformer, a signal collector, a wireless transmission device, a screen display device of an all-in-one machine and a device host of a management terminal. The time relay is connected with the interface converter, the interface converter is connected with the current transformer, the current transformer is connected with the signal acquisition card, the signal acquisition card is connected with the wireless transmission device and the screen display device, and the wireless transmission device is communicated with the device host.
The time relay is provided with two pairs of normally open nodes and two pairs of normally closed nodes. One pair of normally closed nodes is connected in series with the circuit breaker coil loop, and the rest is used as a standby. Meanwhile, the time relay has a signal output function.
The interface converter adopts a four-core aviation plug as an input interface and a POE (Power over Ethernet) interface as an output interface, the transmission rate can reach 2Gbps at most, and a built-in power supply device can provide direct current +12V, -12V, +5V, -5V and 5mA constant current sources.
The current transformer can detect the current in the main loop of the coil of the circuit breaker and can output a current signal to the interface converter.
The signal collector is provided with eight paths of synchronous sampling analog input channels, the AD conversion resolution is 24 bits, the sampling frequency is 100S/S-204.8kS/S, the minimum sampling resolution can reach 181.9uS/S, the dynamic range is 114dB, the input interface adopts a POE interface, and the output interface adopts a USB interface.
The wireless transmission device has the working frequency of 2400-2480 MHz, the serial port speed of 4800bps or more, the transmission distance of 1600m is the highest, the wireless transmission device is provided with a full-frequency rod antenna, and an SMA (shape memory alloy) female head base is adopted as an interface of the full-frequency rod antenna.
The screen display device is a liquid crystal touch screen, the resolution ratio is 800X480 and above, the touch mode is resistance type touch, the induction force is 75g, and the response time is 5 ms.
The working principle of the invention is as follows:
as shown in fig. 6, the circuit breaker coil protection device is directly connected in series to the lower part of the circuit breaker coil in the circuit breaker control circuit by the staff, and the circuit is already in the device. When a circuit breaker coil is connected with an electric loop, a time relay starts timing, and a current transformer collects the current of a main loop of the circuit breaker coil; the time relay is connected with the current transformer through the interface converter, the signal collector processes the collected time information and the collected current information and then displays the time information and the current information through the screen display device, and the signal is transmitted to the computer of a worker through the wireless transmission device.
When the time relay reaches the setting time, a normally closed node connected in series with a main circuit of a circuit breaker coil in the device is disconnected, so that the circuit breaker coil loses power to play a role in protecting the coil, and meanwhile, the signal collector collects power-off information.
Description of the technical solution:
as shown in fig. 6, the present circuit breaker coil protection device includes: the device comprises a time relay, an interface converter, a current transformer, a power supply device, a POE (Power over Ethernet) interface, a signal collector, a USB (Universal Serial bus) interface, a wireless transmission device, a display and a device host. The connection mode is as follows: time relay, current transformer link to each other with the interface converter through four-core plug, and the interface converter passes through the POE interface and links to each other with signal collector, and signal collector passes through the USB interface and links to each other with wireless transmission device, and wireless transmission device passes through wireless receiving module and links to each other with the staff computer.
The time relay is 3RP-11015 in model number and has two pairs of normally open nodes and two pairs of normally closed nodes. One pair of normally closed nodes is connected in series with the circuit breaker coil loop, and the rest is used as a standby. And the time relay has a signal output to the interface converter.
The interface converter is GX16-669, the input interface adopts four-core aviation plug, the output interface adopts POE interface, the transmission rate can reach 2Gbps at most, and the built-in power supply device can provide DC +12V, -12V, +5V, -5V voltage and 5mA constant current source. The function of interface converter is that the POE interface that can insert signal collector is converted by four-core plug with time relay output interface, and built-in power supply unit can provide required working power supply for it simultaneously.
The current transformer is CT10P1, and can detect the current in the main loop of the circuit breaker coil and output the current signal to the interface converter.
The signal collector is NI-PXle4496 in model, eight synchronous sampling analog input channels are provided, the AD conversion resolution is 24 bits, the sampling frequency is 100S/S-204.8kS/S, the minimum sampling resolution can reach 181.9uS/S, the dynamic range is 114dB, the POE interface is adopted as the input interface, and the USB interface is adopted as the output interface. The signal collector is used for carrying out analog-to-digital conversion on the time and current signals, so that the time and current signals are transmitted to the wireless transmission device more effectively and quickly.
The wireless transmission device is YX12500 in model, the working frequency is 2400-2480 MHz, the serial port speed is more than 4800bps, the transmission distance is up to 1600m, the wireless transmission device is provided with a full-frequency rod-shaped antenna, and an SMA (shape memory alloy) negative head base is adopted as an interface of the full-frequency rod-shaped antenna. The wireless transmission device is used for transmitting signals to the staff host in a wireless mode.
After the application runs secretly for a period of time, the feedback of field technicians has the advantages that:
the circuit breaker coil is connected in series and used for knowing a timing circuit breaking device and the like for regularly breaking the circuit breaker coil according to circuit breaking after the circuit breaker coil conducts current, so that the circuit breaker coil is protected and is not easy to burn out.
The circuit breaker coil is protected through the steps of timed circuit breaking and the like, and the circuit breaker coil is not easy to burn out.
Claims (10)
1. An apparatus for protecting a coil of a circuit breaker, comprising: the circuit breaker comprises a timing circuit breaker device which is connected in series into a circuit breaker coil and is used for timely breaking the circuit breaker coil according to circuit breaking after the circuit breaker coil is informed of conducting current.
2. An apparatus for protecting a coil of a circuit breaker as claimed in claim 1, wherein: the circuit breaker further comprises a timing circuit breaking module, a circuit breaker coil and a circuit breaker control module, wherein the timing circuit breaking module is used for acquiring circuit breaking timing by a timing circuit breaking device, and the timing circuit breaking device breaks the circuit breaker coil according to the circuit breaking timing after knowing the conduction current of the circuit breaker coil; the breaking timing is the time from when the breaker coil conducts current to when the breaker coil is disconnected.
3. An apparatus for protecting a coil of a circuit breaker as claimed in claim 1, wherein: the timing circuit breaking device is a time relay.
4. An apparatus for protecting a coil of a circuit breaker as claimed in claim 1, wherein: the current transformer and the signal collector are used for obtaining current information in the circuit breaker coil, and the current information obtaining module is used for obtaining current information in the circuit breaker coil through the current transformer.
5. An apparatus for protecting a coil of a circuit breaker as claimed in claim 4, wherein: the signal collector is connected with the communication device and is in one-way communication with the communication device to obtain the current information module, and the signal collector is used for sending current information through the communication device.
6. An apparatus for protecting a coil of a circuit breaker as claimed in claim 5, wherein: the communication device is a wireless communication device.
7. An apparatus for protecting a coil of a circuit breaker as claimed in claim 4, wherein: the system comprises a signal collector, a signal acquisition device, a display module and a power supply module, wherein the signal acquisition device is connected with the integrated machine and is in one-way communication with the integrated machine, and the display module is used for acquiring and displaying current information by the integrated machine.
8. An apparatus for protecting a coil of a circuit breaker as claimed in claim 4, wherein: still include power supply unit, interface converter and POE interface, the first port that timing circuit breaker passed through interface converter is connected to power supply unit, current transformer passes through interface converter's second port and is connected to power supply unit, power supply unit passes through POE interface connection to signal collector.
9. A method of protecting a circuit breaker coil, comprising: the method comprises the following steps of timing circuit breaking, presetting circuit breaking timing, and breaking the circuit breaker coil according to the circuit breaking timing after the timing circuit breaking device acquires the conduction current of the circuit breaker coil.
10. A method of protecting a circuit breaker coil as claimed in claim 9, wherein: the method also comprises the following steps of acquiring current information, and acquiring and transmitting the current information in the coil of the circuit breaker; and a display step, receiving and displaying the current information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680077.3A CN111864702A (en) | 2020-07-15 | 2020-07-15 | Device and method for protecting circuit breaker coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680077.3A CN111864702A (en) | 2020-07-15 | 2020-07-15 | Device and method for protecting circuit breaker coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111864702A true CN111864702A (en) | 2020-10-30 |
Family
ID=72983528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010680077.3A Pending CN111864702A (en) | 2020-07-15 | 2020-07-15 | Device and method for protecting circuit breaker coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111864702A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090206059A1 (en) * | 2008-02-19 | 2009-08-20 | Kiko Frederick J | Intelligent circuit breaker apparatus and methods |
| CN102324790A (en) * | 2011-09-22 | 2012-01-18 | 浙江乾龙科技有限公司 | Intelligent management terminal of circuit breaker |
| CN206195331U (en) * | 2016-08-24 | 2017-05-24 | 国网山东省电力公司阳信县供电公司 | Protecting device for opening/closing coil of high -voltage circuit breaker |
| CN206195330U (en) * | 2016-10-12 | 2017-05-24 | 贵州电网有限责任公司贵阳供电局 | Protection of intelligence breaker control circuit and monitoring devices |
| CN208797569U (en) * | 2018-11-13 | 2019-04-26 | 莱芜钢铁集团有限公司 | A kind of high-voltage switch cabinet breaker closing coil protective device |
-
2020
- 2020-07-15 CN CN202010680077.3A patent/CN111864702A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090206059A1 (en) * | 2008-02-19 | 2009-08-20 | Kiko Frederick J | Intelligent circuit breaker apparatus and methods |
| CN102324790A (en) * | 2011-09-22 | 2012-01-18 | 浙江乾龙科技有限公司 | Intelligent management terminal of circuit breaker |
| CN206195331U (en) * | 2016-08-24 | 2017-05-24 | 国网山东省电力公司阳信县供电公司 | Protecting device for opening/closing coil of high -voltage circuit breaker |
| CN206195330U (en) * | 2016-10-12 | 2017-05-24 | 贵州电网有限责任公司贵阳供电局 | Protection of intelligence breaker control circuit and monitoring devices |
| CN208797569U (en) * | 2018-11-13 | 2019-04-26 | 莱芜钢铁集团有限公司 | A kind of high-voltage switch cabinet breaker closing coil protective device |
Non-Patent Citations (1)
| Title |
|---|
| 金慧: "35kV断路器跳合闸线圈实时测控保护装置的研制", 《浙江电力》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201966578U (en) | Arc extinguishing type electrical fireproof short circuit protection device | |
| CN103985617B (en) | A kind of Intelligent fuse | |
| CN102263645A (en) | Power management method and power management system for communication equipment | |
| CN110784017A (en) | Intelligent detection device and method for distribution transformer based on real-time data acquisition | |
| CN202183639U (en) | Intelligent switch and fault isolation system of distribution network line | |
| CN204652310U (en) | A kind of photovoltaic combiner box possessing photovoltaic DC side short-circuit protection and monitoring | |
| CN110021997B (en) | Intelligent power distribution loop fault detection method and system | |
| CN210322033U (en) | Female temperature monitoring devices that arranges of cubical switchboard | |
| CN210838933U (en) | Silicon chain open-circuit protection system for direct-current power supply of power system | |
| CN102570588A (en) | Automatic power transfer switch controller and control method thereof | |
| CN210328309U (en) | Data center computer room network cabinet | |
| CN111864702A (en) | Device and method for protecting circuit breaker coil | |
| CN111200272A (en) | Intelligent plastic shell type circuit breaker and control method thereof | |
| CN108666982A (en) | A kind of breaker mechanism closing coil protective device and guard method | |
| CN100413170C (en) | Electric motor control protector | |
| CN206323120U (en) | High-power quick electric fire current-limiting protector | |
| CN113394013B (en) | Intelligent voltage transformer | |
| CN210444067U (en) | Remote alarm controller for electric power facilities | |
| CN211606079U (en) | Medium-voltage switch cabinet for realizing low-voltage locking of motor | |
| CN208753978U (en) | Breaker mechanism closing coil protective device | |
| CN207559538U (en) | A kind of three-phase automatic reclosing device with wireless communication function | |
| CN204407871U (en) | Circuit breaker is the built-in protection module control circuit of changer controller more | |
| CN203466592U (en) | Starting circuit for photovoltaic energy-storage system of off-grid type | |
| CN202025405U (en) | Power equipment safety system | |
| CN215528699U (en) | Informationized power distribution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
|
| RJ01 | Rejection of invention patent application after publication |