CN212725068U - Operation circuit capable of acquiring opening and closing positions of handles in remote state - Google Patents
Operation circuit capable of acquiring opening and closing positions of handles in remote state Download PDFInfo
- Publication number
- CN212725068U CN212725068U CN202021732478.0U CN202021732478U CN212725068U CN 212725068 U CN212725068 U CN 212725068U CN 202021732478 U CN202021732478 U CN 202021732478U CN 212725068 U CN212725068 U CN 212725068U
- Authority
- CN
- China
- Prior art keywords
- switching
- chip
- handle
- state
- electrically connected
- 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.)
- Active
Links
Images
Abstract
The utility model provides an operation loop which can collect the on-off position of a handle in a remote state, comprising a power supply loop; the state switching signal acquisition circuit is used for processing the operation state switching remote signaling signal in the implementation circuit; the local operation loop is used for switching the switching-on action and the switching-off action of the implementation circuit in the appointed operation state; the remote control operation loop is used for outputting remote signaling signals for switching off and switching on the implementation circuit in the specified operation state; an outlet loop; through setting up the utility model discloses the operation return circuit that possesses for when implementing the device and being in distant place state, also can gather manual separating brake, manual combined floodgate signal, with the handle hand-operated separating brake state when on-the-spot maintainer, the handle can keep this state, thereby leads to implementing the device not only can detect manual separating brake remote signaling signal, also can realize the action instruction that the switch does not separate the brake, does not close a floodgate.
Description
Technical Field
The utility model relates to a distribution automation technical equipment field specifically is an operation return circuit of handle deciliter position can be gathered to distant place state.
Background
The operation loop of the feeder line terminal is mainly used for controlling the body on-off operation loops of the pole-mounted circuit breaker and the load switch, so that the on-off action control of the pole-mounted circuit breaker and the load switch is realized, the on-off control of a power supply line is achieved, when the line breaks down, the switch can be rapidly switched off, a fault area is cut off, no influence on other power supply subareas is ensured, the harm is minimized, the switch is switched on after the overhaul is finished, and the power supply of the power failure area is recovered;
the national grid company distribution network standardized material solidification technical specification relates to the regulation in the primary and secondary fusion set column load switch: when the local or remote switch of the FTU is at a remote position, the manual opening or closing of the FTU is locked through hardware, and the remote opening or closing switch is controlled through a CPU; when the operation power supply is normal, the remote or local change-over switch is in the local position, the switch is allowed to be manually opened or closed, and the CPU is not used for controlling the switch;
the existing controller can acquire local remote signaling signals and remote signaling signals of manual brake opening and manual brake closing at the same time in a local state, and the device can realize the actions of manual brake opening and manual brake closing without being controlled by a CPU and lock remote control actions; however, remote telecommand signals can be collected in a remote state, and remote telecommand signals of manual opening and manual closing cannot be collected, so that the device can realize remote control opening and remote control closing actions in the remote state and lock the manual action; in addition, when the device was in the distant place state, there was the maintainer to overhaul the scene, if the remote control closed a floodgate power transmission under the condition that the maintainer was unknown, can cause the injury to maintainer personal safety.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art exists, the utility model aims at providing an operation return circuit of handle deciliter position can be gathered to remote state to solve the problem that proposes in the above-mentioned background art, the utility model discloses a when realizing device is in remote state, manual separating brake is gathered in the handle action, manual combined floodgate signal, nevertheless can not realize the switch and divide or close the action, with the handle hand-operated separating brake state of turning to the field service personnel, the conversion handle can keep this state, the device can detect manual separating brake telesignalling signal this moment, realizing device remote state in software logic, when detecting manual separating brake signal, shutting remote control combined floodgate, guarantee the advantage of service personnel personal safety, solved the problem among the prior art.
In order to achieve the above purpose, the present invention is realized by the following technical solution: in order to achieve the above purpose, the present invention is realized by the following technical solution: an operation circuit capable of acquiring a handle opening and closing position in a remote state, comprising:
a state switching signal collection circuit, which includes a dial switch X1, a handle switch, an optocoupler chip U1, an optocoupler chip U2, an optocoupler chip U3, an optocoupler chip U4, and a main CPU, wherein the dial switch X1 is electrically connected to a handle telecommand interface installed on the handle switch for switching the operation state of the implementation circuit, the handle telecommand interface is electrically connected to one end of the optocoupler chip U1 and one end of the optocoupler chip U2 respectively for switching the switching operation or closing operation of the implementation circuit, the handle telecommand interface is electrically connected to one end of the optocoupler chip U3 and one end of the optocoupler chip U4 respectively for switching the operation state of the implementation circuit, the main CPU is electrically connected to the other end of the optocoupler chip U1 and the other end of the optocoupler chip U2 respectively for processing the switching operation and closing telecommand signals in the implementation circuit, and the main CPU is electrically connected to the other end of the optocoupler chip 3, The other end of the optical coupling chip U4 is used for processing an operation state switching remote signaling signal in the implementation circuit;
the on-site operation loop comprises an optical coupling chip U8 and an optical coupling chip U9, wherein one end of the optical coupling chip U8 is electrically connected with a main CPU, one end of the optical coupling chip U9 is electrically connected with the main CPU, the other end of the optical coupling chip U8 is electrically connected with a handle remote signaling interface and used for switching the switching-off action of an implementation circuit in a specified operation state, and the other end of the optical coupling chip U9 is connected with a handle remote signaling interface and used for switching the switching-on action of the implementation circuit in the specified operation state;
the remote control operation loop comprises an optical coupling chip U5 with one end electrically connected with the main CPU, an optical coupling chip U6 with one end electrically connected with the main CPU, and an optical coupling chip U7 with one end electrically connected with the main CPU, wherein the other end of the optical coupling chip U5 is electrically connected with the handle remote signaling interface and is used for remote signaling signal output for switching off and switching on the implementation circuit in a specified operation state;
and the outlet loop is used for outputting the remote signaling signals generated in the implementation circuit in the specified state.
As right the utility model provides an improvement of the operation return circuit of handle deciliter position can be gathered to distant place state, the export return circuit includes separating brake relay RL1 and combined floodgate relay RL2, wherein, separating brake relay RL1 electricity respectively connects opto-coupler chip U8, opto-coupler chip U6 for carry out separating brake telesignalling signal switching to the implementation circuit under the appointed operating condition, combined floodgate relay RL2 electricity is connected opto-coupler chip U9, opto-coupler chip U7 for carry out combined floodgate telesignalling signal switching to the implementation circuit under the appointed operating condition.
As an improvement to the operation circuit of the utility model, wherein the remote state can be collected the handle on-off position, the model of the main CPU is MK64FN1MOVLQ 12.
Compared with the prior art, the beneficial effects of the utility model are that:
through setting up the utility model discloses the operation return circuit that possesses for implement when the device is in the distant place state, also can gather manual separating brake, manual combined floodgate signal, furthermore, turn to manual separating brake state with the handle when on-the-spot maintainer, the handle can keep this state, thereby lead to implementing the device and not only can detect manual separating brake remote signaling signal, also can realize the not separating brake of switch, the action instruction of not combined floodgate, make it realize implementing the device distant place state in software logic, detect manual separating brake signal, shutting remote control combined floodgate, guarantee maintainer personal safety.
Drawings
The disclosure of the present invention is explained with reference to the drawings. It is to be understood that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention, for which reference should be made to the appended drawings in which like elements are designated by like reference numerals. Wherein:
fig. 1 is the utility model relates to a state switching signal acquisition circuit's circuit schematic diagram in the operation circuit of handle deciliter position can be gathered to distant place state.
Fig. 2 is a schematic circuit diagram of an operation circuit on the spot in the operation circuit of the handle separation and combination position capable of being collected in a remote state.
Fig. 3 is a schematic circuit diagram of a remote operation circuit in an operation circuit of the remote status collecting handle switching position.
Fig. 4 is a schematic circuit diagram of an outlet circuit in an operation circuit of the remote status collecting handle switching position.
Fig. 5 is a schematic diagram of a dial switch X1 signal transmission circuit according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a signal transmission circuit of the handle remote signaling interface terminal P1 according to an embodiment of the present invention.
Detailed Description
It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.
The utility model provides a technical scheme: as an embodiment of the present invention: an operation circuit capable of acquiring the opening and closing positions of a handle in a remote state comprises a power supply circuit, wherein the power supply circuit is used for supplying 24V alternating voltage to an implementation circuit;
a state switching signal acquisition loop, wherein the state switching signal loop comprises a dial switch X1, a handle switch, an optical coupling chip U1, an optical coupling chip U2, an optical coupling chip U3, an optical coupling chip U4 and a main CPU, wherein the dial switch X1 is electrically connected with a handle remote signaling interface arranged on the handle switch and used for switching the operation state of the implementation circuit, the handle remote signaling interface is electrically connected with one end of the optical coupling chip U1 and one end of the optical coupling chip U2 respectively and used for switching the opening or closing action of the implementation circuit, the handle remote signaling interface is electrically connected with one end of the optical coupling chip U3 and one end of the optical coupling chip U4 respectively and used for switching the operation state of the implementation circuit, the main CPU is electrically connected with the other end of the optical coupling chip U1 and the other end of the optical coupling chip U2 respectively and used for processing the opening and closing signals in the implementation circuit, and the main CPU is electrically connected with, The other end of the optical coupling chip U4 is used for processing an operation state switching remote signaling signal in the implementation circuit;
as shown in fig. 1 and 5-6, when the dial switch X1 is toggled upwards, the nodes 1, 2, 3 and 4 of the dial switch X1 are connected, wherein the nodes 1 and 2 output signals YF-PWR, and the nodes 3 and 4 are connected to the +24V1 power supply, at this time, the pin 1 of the optical coupling chip U3 is connected to the nodes 1 and 2 of the dial switch X1, the optical coupling chip U3 is connected, the pin six of the optical coupling chip U3 outputs DI-YF remote signaling signals to the main CPU, and the main CPU confirms that the remote signaling implementing device is in a remote state after collecting the DI-YF remote signaling;
when the dial switch X1 is shifted downwards, the nodes 5, 6, 3 and 4 of the dial switch X1 are conducted, wherein the nodes 5 and 6 output signals JD-PWR, the nodes 3 and 4 are connected with a +24V1 power supply, at the moment, a pin 1 of the optical coupling chip U4 is connected with the nodes 5 and 6 of the dial switch X1, the optical coupling chip U4 is conducted, the optical coupling chip U4 outputs DI-JD local telecommand signals to a main CPU, and the main CPU confirms that the implementation device is in a local state after collecting the DI-JD local telecommand signals;
when the handle switch is switched to a hand brake-off state, a pin 1 and a pin 2 of the handle remote signaling interface terminal P1 are conducted, wherein the pin 2 of the terminal P1 outputs a signal KK-2, the pin 1 of the terminal P1 is connected with a +24V1 power supply, after the optical coupling chip U1 is conducted, the handle remote signaling interface terminal P1 outputs a DI-SF hand brake-off remote signaling signal to a main CPU, and after the main CPU collects the DI-SF hand brake-off remote signaling signal, the fact that the implementation device receives a hand brake-off action command of the handle switch is confirmed;
when the handle switch is switched to a hand-closing state, the 3 feet and the 4 feet of the handle remote signaling interface terminal P1 are conducted, wherein the 4 foot of the terminal P1 outputs a signal KK-4, the 3 foot of the terminal P1 is connected with a +24V1 power supply, after the optical coupling chip U2 is conducted, the handle remote signaling interface terminal P1 outputs a DI-SH manual closing remote signaling signal to a main CPU, and after the main CPU collects the DI-SH manual closing remote signaling signal, the fact that the implementation device receives a manual closing action command of the handle switch is confirmed;
when the implementation device is in a remote or local state and the handle switch has a manual opening or closing action, the main CPU collects DI-SF manual opening remote signaling signals and DI-SH manual closing remote signaling signals for processing.
The on-site operation loop comprises an optical coupling chip U8 and an optical coupling chip U9, wherein one end of the optical coupling chip U8 is electrically connected with the main CPU, one end of the optical coupling chip U9 is electrically connected with the main CPU, the other end of the optical coupling chip U8 is electrically connected with a handle remote signaling interface and used for switching the switching-off action of the implementation circuit in the specified operation state, and the other end of the optical coupling chip U9 is connected with the handle remote signaling interface and used for switching the switching-on action of the implementation circuit in the specified operation state;
as shown in fig. 2, when the dial switch X1 is toggled downwards, the nodes 5, 6 and 3, 4 of the dial switch X1 are turned on, wherein the nodes 5, 6 of the dial switch X1 output a JD-PWR signal, the nodes 3, 4 of the dial switch X1 are turned on +24V1 power, when the above-mentioned handle switch is turned to the manual opening state, the pin 1 and the pin 2 of the remote signaling interface terminal P1 are turned on, wherein the pin 2 of the terminal P1 outputs a KK-2 signal, the pin 1 of the terminal P1 is turned on +24V1 power, at this time, the pin 1 of the optocoupler chip U8 is connected to the nodes 5, 6 of the dial switch X1, the optocoupler chip U8 is turned on, the pin 6 of the optocoupler chip U8 outputs a manual opening remote signaling signal KK-2-X, and the pin 4 of the optocoupler chip U8 outputs a manual opening signaling signal KK-2 signal to the opening outlet loop;
when the handle switch is switched to a hand closing state, the 3 feet and the 4 feet of the handle remote signaling interface terminal P1 are conducted, wherein the 4 feet of the terminal P1 output signals KK-4, the 3 feet of the terminal P1 are connected with a +24V1 power supply, at the moment, the 1 foot of the optical coupling chip U9 is connected with the nodes 5 and 6 of the dial switch X1, the optical coupling chip U9 is conducted, the 6 feet of the optical coupling chip U9 output manual closing remote signaling signals KK-4-X and the 4 feet of the optical coupling chip U9 output manual closing remote signaling signals KK-4 to a closing outlet relay loop;
when the implementation device is in an on-site state, the optical coupling chip U8 and the optical coupling chip U9 can be conducted, a manual opening remote signaling signal KK-2-X and a manual closing remote signaling signal KK-4-X are output to an outlet relay loop, the remote state is guaranteed, and meanwhile, manual opening and manual closing operation instructions cannot enable the handle switch to achieve opening and closing actions.
The remote control operation loop comprises an optical coupling chip U5 with one end electrically connected with the main CPU, an optical coupling chip U6 with one end electrically connected with the main CPU, and an optical coupling chip U7 with one end electrically connected with the main CPU, wherein the other end of the optical coupling chip U5 is electrically connected with a handle remote signaling interface and is used for remote signaling signal output for switching off and switching on the implementation circuit in a specified operation state;
as shown in fig. 3, when the dial switch X1 is toggled upwards, the nodes 1, 2, 3 and 4 of the dial switch X1 are turned on, wherein the nodes 1 and 2 output signals YF-PWR, the nodes 3 and 4 are turned on with +24V1 power, at this time, the pin 1 of the optocoupler chip U3 is connected with the nodes 1 and 2 of the dial switch X1, the optocoupler chip U3 is turned on, the six pins of the optocoupler chip U3 output DI-YF remote signaling signals to the main CPU, after the main CPU collects DI-YF remote signaling, the implementation device is confirmed to be in a remote state, the main CPU firstly sends a selection command SEL-SIG1 before outputting manual opening and manual closing operation commands, so that the optocoupler chip U5 is turned on, one pin of the optocoupler chip outputs a selection signal SEL-OBJ, the other pin is turned on with +24V1 power, wherein,
if the remote control opening remote signaling operation is carried out on the handle switch, the main CPU outputs an FZ-SIG command to enable the optocoupler chip U6 to be conducted, one pin of the optocoupler chip U6 outputs an FZ-RELAY remote signaling signal, and the other pin outputs an SEL-OBJ remote signaling signal, namely, the remote control opening remote signaling signal FZ-RELAY and the selection outlet RELAY remote signaling signal SEL-OBJ at the moment are both connected to the opening outlet RELAY loop and are used for remotely controlling the remote opening of the handle switch of the implementation device;
if remote control closing remote signaling operation is carried out on the handle switch, the main CPU outputs an HZ-SIG command to enable the optocoupler chip U7 to be conducted, one pin of the optocoupler chip U7 outputs an HZ-RELAY remote signaling signal, and the other pin outputs an SEL-OBJ remote signaling signal, namely, the remote control closing signal HZ-RELAY and the selective outlet RELAY remote signaling signal SEL-OBJ at the moment are connected to a closing outlet RELAY loop and used for remote closing remote control of the handle switch of the implementation device;
the outlet loop is used for outputting remote signaling signals generated in the implementation circuit in the designated state, and comprises a switching-off relay RL1 and a switching-on relay RL2, the switching-off relay RL1 is respectively and electrically connected with an optocoupler chip U8 and an optocoupler chip U6 and is used for switching-off remote signaling signals of the implementation circuit in the designated operation state, and the switching-on relay RL2 is electrically connected with an optocoupler chip U9 and an optocoupler chip U7 and is used for switching-on remote signaling signals of the implementation circuit in the designated operation state.
As shown in fig. 4, based on the manual opening signal KK-2-X or the remote control opening signal FZ-release outputted above, when either the remote signaling signal of the manual opening signal KK-2-X or the remote control opening signal FZ-release is conducted with the power supply of +24V1, the coil of the opening RELAY RL1 is energized, wherein the normally open contacts 4, 3, 5 and 6 of the opening RELAY RL1 are closed, so as to form an opening outlet voltage, drive the opening loop of the primary on-column switch to be energized, and realize the opening operation of the handle switch;
meanwhile, based on the manual switching-on signal KK-4-X or the remote control switching-on signal HZ-RELAY, when any one of the manual switching-on signal KK-4-X or the remote control switching-on signal HZ-RELAY is conducted with a +24V1 power supply, a coil of a switching-on RELAY RL2 is electrified, wherein normally open contacts 4, 3 and 5, 6 of the switching-on RELAY RL2 are closed, so that a switching-on outlet voltage is formed, a column switch switching-on loop is driven to be electrified, and the switching-on operation of the switch is realized, through the arranged operation loop, when the implementation device is in a remote state, the implementation device can also collect manual switching-off and manual switching-on signals, in addition, when a field maintenance worker turns a handle to the manual switching-off state, the handle can keep the state, so that the implementation device can not only detect the manual switching-off remote signaling, the remote control switch can also realize the action instructions of no opening and closing of the switch, so that the remote state of the implementation device is realized in software logic, a manual opening signal is detected, remote control closing is locked, and the personal safety of maintenance personnel is ensured.
As an embodiment of the present invention, the main CPU has model number MK64FN1MOVLQ 12.
The technical scope of the present invention is not limited to the content in the above description, and those skilled in the art can make various modifications and alterations to the above embodiments without departing from the technical spirit of the present invention, and these modifications and alterations should fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides an operation return circuit of handle deciliter position can be gathered to distant place state which characterized in that includes:
a state switching signal collection circuit, which includes a dial switch X1, a handle switch, an optocoupler chip U1, an optocoupler chip U2, an optocoupler chip U3, an optocoupler chip U4, and a main CPU, wherein the dial switch X1 is electrically connected to a handle telecommand interface installed on the handle switch for switching the operation state of the implementation circuit, the handle telecommand interface is electrically connected to one end of the optocoupler chip U1 and one end of the optocoupler chip U2 respectively for switching the switching operation or closing operation of the implementation circuit, the handle telecommand interface is electrically connected to one end of the optocoupler chip U3 and one end of the optocoupler chip U4 respectively for switching the operation state of the implementation circuit, the main CPU is electrically connected to the other end of the optocoupler chip U1 and the other end of the optocoupler chip U2 respectively for processing the switching operation and closing telecommand signals in the implementation circuit, and the main CPU is electrically connected to the other end of the optocoupler chip 3, The other end of the optical coupling chip U4 is used for processing an operation state switching remote signaling signal in the implementation circuit;
the on-site operation loop comprises an optical coupling chip U8 and an optical coupling chip U9, wherein one end of the optical coupling chip U8 is electrically connected with a main CPU, one end of the optical coupling chip U9 is electrically connected with the main CPU, the other end of the optical coupling chip U8 is electrically connected with a handle remote signaling interface and used for switching the switching-off action of an implementation circuit in a specified operation state, and the other end of the optical coupling chip U9 is connected with a handle remote signaling interface and used for switching the switching-on action of the implementation circuit in the specified operation state;
the remote control operation loop comprises an optical coupling chip U5 with one end electrically connected with the main CPU, an optical coupling chip U6 with one end electrically connected with the main CPU, and an optical coupling chip U7 with one end electrically connected with the main CPU, wherein the other end of the optical coupling chip U5 is electrically connected with the handle remote signaling interface and is used for remote signaling signal output for switching off and switching on the implementation circuit in a specified operation state;
and the outlet loop is used for outputting the remote signaling signals generated in the implementation circuit in the specified state.
2. The remote status collecting operation circuit for the handle switching on/off position according to claim 1, wherein: the outlet loop comprises a switching-off relay RL1 and a switching-on relay RL2, wherein the switching-off relay RL1 is electrically connected with an optocoupler chip U8 and an optocoupler chip U6 respectively and is used for switching-off remote signaling signals of an implementation circuit in a specified operation state, and the switching-on relay RL2 is electrically connected with an optocoupler chip U9 and an optocoupler chip U7 and is used for switching-on remote signaling signals of the implementation circuit in the specified operation state.
3. The remote status collecting operation circuit for the handle switching on/off position according to claim 1, wherein: the model of the main CPU is MK64FN1MOVLQ 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021732478.0U CN212725068U (en) | 2020-08-19 | 2020-08-19 | Operation circuit capable of acquiring opening and closing positions of handles in remote state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021732478.0U CN212725068U (en) | 2020-08-19 | 2020-08-19 | Operation circuit capable of acquiring opening and closing positions of handles in remote state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212725068U true CN212725068U (en) | 2021-03-16 |
Family
ID=74919218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021732478.0U Active CN212725068U (en) | 2020-08-19 | 2020-08-19 | Operation circuit capable of acquiring opening and closing positions of handles in remote state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212725068U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422355A (en) * | 2021-06-28 | 2021-09-21 | 积成电子股份有限公司 | Remote signaling remote control shared circuit for medium-voltage distribution recloser controller |
| CN113447810A (en) * | 2021-06-29 | 2021-09-28 | 积成电子股份有限公司 | Device and method for realizing switching-on and switching-off operation detection and misoperation prevention of ring main unit |
-
2020
- 2020-08-19 CN CN202021732478.0U patent/CN212725068U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422355A (en) * | 2021-06-28 | 2021-09-21 | 积成电子股份有限公司 | Remote signaling remote control shared circuit for medium-voltage distribution recloser controller |
| CN113447810A (en) * | 2021-06-29 | 2021-09-28 | 积成电子股份有限公司 | Device and method for realizing switching-on and switching-off operation detection and misoperation prevention of ring main unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212725068U (en) | Operation circuit capable of acquiring opening and closing positions of handles in remote state | |
| CN202487453U (en) | Monitoring device for opening and closing of high-voltage isolating switch | |
| CN108266187A (en) | A kind of coalcutter remote activating device and remotely start control method | |
| CN210536277U (en) | Circuit breaker control loop of microcomputer protection device | |
| CN207989024U (en) | A kind of coalcutter remote activating device | |
| CN108682579A (en) | A kind of disconnecting switch motor power distant place control method | |
| CN112688424A (en) | Control system of intelligent high-voltage circuit breaker anti-tripping loop | |
| CN201593638U (en) | Power station butterfly valve remote automatic control system | |
| CN206977148U (en) | It is a kind of that civil power and the circuit of oil machine switching are controlled using PLC and touch-screen | |
| CN114188971A (en) | Photovoltaic box-type substation | |
| CN110473724A (en) | A kind of automatic three-phase control system of medium voltage electricity switch | |
| CN204886396U (en) | Haul oneself willingly into runback control system | |
| CN111817176A (en) | Household intelligent electric energy metering box system | |
| CN208028657U (en) | A kind of intelligent ups power control system | |
| CN203071647U (en) | Low-voltage switch cabinet automatic input and recovery device | |
| CN101714782B (en) | Remote control locking device of low-voltage circuit breaker and locking method | |
| CN210724305U (en) | Fault guiding safety device, power utilization safety system, multi-path power utilization safety system and automatic bus transfer interlocking control system | |
| CN211986737U (en) | Linkage module box configuration structure for fire alarm of converter station | |
| CN103840564A (en) | Remote control loop comprehensive misoperation-preventive locking device | |
| CN101710736B (en) | Intelligent controller of transformer substation | |
| CN112332402A (en) | Dual-power measurement and control device | |
| CN206023359U (en) | A kind of standby power switching device | |
| CN202585293U (en) | Automatically reclosing device of circuit breaker | |
| CN101154829A (en) | Method for implementing automatic switching of ring main unit standby power by FTU | |
| CN205647006U (en) | Extremely fast combined electrical apparatus that suits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |