CN113741242A - Control method, device and system of isolating switch - Google Patents
Control method, device and system of isolating switch Download PDFInfo
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- CN113741242A CN113741242A CN202110893708.4A CN202110893708A CN113741242A CN 113741242 A CN113741242 A CN 113741242A CN 202110893708 A CN202110893708 A CN 202110893708A CN 113741242 A CN113741242 A CN 113741242A
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention discloses a control method of an isolating switch, which comprises the following steps: acquiring a gate control instruction sent by a remote control end; starting a motor to control the action of the gate according to the gate control instruction; acquiring a motor state signal in real time, and when judging that the gate action has no fault, acquiring a gate monitoring signal to perform logical operation to output a gate state signal to determine the gate in-place condition; and sending a gate state instruction to the remote control end. The invention also discloses a control device of the isolating switch and a control system of the isolating switch. By adopting the embodiment of the invention, the remote control and the state monitoring can be carried out on the isolating switch, and whether the gate is in place can be accurately and reliably judged, thereby ensuring the safety of operating personnel and a power grid system.
Description
Technical Field
The invention relates to the technical field of power transformation equipment, in particular to a control method, a control device and a control system of an isolating switch.
Background
The high-voltage switch equipment is important protection and control equipment of a power grid, and the isolating switch is used as a switch device without an arc extinguishing function, can provide an obvious fracture for a power system, protects safety of operators and the system, and is widely applied to the high-voltage power grid.
With the increasing demand for intellectualization of power systems, the demand for the intellectualization level of power equipment is gradually increased, and in recent years, the demands for remote operation, one-key sequence control and the like are further put forward for isolating switches. The operating personnel can realize the remote control of the isolating switch through remote communication without going to an actual site, the operation and control operation of the isolating switch are greatly facilitated, but meanwhile, the operating personnel are difficult to accurately and reliably judge whether the gate is in place or not, and potential safety hazards are easily brought.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method, an apparatus and a system for controlling a disconnecting switch, which have the functions of remote communication and status monitoring, and can accurately and reliably determine whether a gate is in place.
In a first aspect, an embodiment of the present invention provides a method for controlling a disconnecting switch, where the method includes:
acquiring a gate control instruction sent by a remote control end;
starting a motor according to the gate control instruction so that the motor controls the gate to act;
acquiring a motor state signal in real time, and acquiring a gate monitoring signal after a preset time interval when judging that the gate action does not have a fault according to the motor state signal;
outputting a gate state signal according to the gate monitoring signal;
determining the gate in-place condition according to the gate state signal and the gate control instruction;
and sending a gate state instruction to the remote control end according to the gate in-place condition.
In a first implementation form of the first aspect of the present invention, the gate monitoring signal includes a microswitch monitoring signal and a video monitoring signal; then, the outputting a gate state signal according to the gate monitoring signal specifically includes:
and carrying out logic operation according to the microswitch monitoring signal and the video monitoring signal, and outputting a gate state signal.
In a second implementation form according to the first aspect, the gate monitoring signal includes a microswitch monitoring signal, a video monitoring signal and an auxiliary switch monitoring signal; then, the outputting a gate state signal according to the gate monitoring signal specifically includes:
and carrying out logic operation according to the microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal, and outputting a gate state signal.
According to a second implementation manner of the first aspect, in a third implementation manner of the first aspect, the microswitch monitoring signal comprises a microswitch on-position signal and a microswitch off-position signal;
the video monitoring signals comprise video combination signals and video separation signals;
the auxiliary switch monitoring signals comprise auxiliary switch on-position signals and auxiliary switch off-position signals;
the gate state signal comprises a gate closing signal, a gate separating signal and a gate abnormal signal;
then, carry out logical operation according to micro-gap switch monitoring signal, video monitoring signal and auxiliary switch monitoring signal, output gate state signal specifically includes:
when the microswitch monitoring signal is a microswitch on-position signal, the video monitoring signal is a video on-position signal and the auxiliary switch monitoring signal is an auxiliary switch on-position signal, the output gate state signal is a gate on-position signal;
when the microswitch monitoring signal is a microswitch indexing signal, the video monitoring signal is a video indexing signal and the auxiliary switch monitoring signal is an auxiliary switch indexing signal, the output gate state signal is a gate indexing signal;
when the micro switch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal are in other conditions, the output gate state signal is a gate abnormal signal.
According to a third implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the gate control instruction includes a switching-off control instruction and a switching-on control instruction; then, the determining the gate in-place situation according to the gate state signal and the gate control instruction specifically includes:
when the gate state signal is a gate closing position signal and the control instruction is a closing control instruction, judging that the gate is closed in place;
when the gate state signal is a gate separating signal and the control instruction is a gate separating control instruction, judging that the gate is in place;
and when the gate state signal and the control command are in other conditions, judging that the gate is not in place.
According to a fourth implementation manner of the first aspect, in a fifth implementation manner of the first aspect, the gate state instruction includes a gate closed-position in-place instruction, a gate separated-position in-place instruction, and a gate not-in-place warning instruction; then, the sending a gate state instruction to the remote control end according to the gate in-place condition specifically includes:
when the gate is judged to be in place, controlling the motor to stop and sending a gate in-place command to the remote control end;
when the gate is judged to be in place in a separated position, controlling the motor to stop and sending a gate in-place in separated position instruction to the remote control end;
and when the gate is not in place, controlling the motor to stop and sending a gate non-arrival warning instruction to the remote control end.
According to a fifth implementation form of the first aspect, in a sixth implementation form of the first aspect, the motor status signal comprises at least a motor current signal and a spindle torque signal; then, the determining that the gate does not malfunction according to the motor state signal specifically includes:
acquiring a current value of the motor current signal and a torque value of the main shaft torque signal;
comparing the current value to a first threshold value; when the current value is smaller than or equal to a first threshold value, determining that the motor current is not abnormal;
comparing the torque value with a second threshold value and a third threshold value; when the torque value is larger than a second threshold and smaller than a third threshold, judging that the main shaft torque is not abnormal;
and when the motor current and the main shaft torque are not abnormal, judging that the gate action has no fault.
In a second aspect, an embodiment of the present invention provides a control device for a disconnecting switch, including at least:
the signal acquisition module is used for acquiring a gate control instruction sent by a remote control end;
the motor control module is used for controlling the starting and stopping of the motor;
the fault judgment module is used for acquiring a motor state signal in real time and judging whether the gate action has a fault according to the motor state signal;
the gate in-place judging module is used for acquiring a gate monitoring signal, outputting a gate state signal according to the gate monitoring signal and determining the gate in-place condition according to the gate state signal and the gate control instruction;
and the signal sending module is used for sending a gate state instruction to the remote control end.
In a third aspect, an embodiment of the present invention further provides a control system of a disconnecting switch, which is characterized by at least including a disconnecting switch, a motor, a remote control terminal, a monitoring component, and the control device of the disconnecting switch according to claim 9; the isolating switch is connected with the motor, and the motor, the remote control end and the monitoring assembly are respectively connected with the control device.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
according to the control method of the isolating switch, the motor state signal is acquired in real time through remote communication, and whether the gate action fails or not is detected and judged in time; after the fact that the action of the gate is faultless is confirmed, the gate in-place situation is judged, and the gate in-place situation is confirmed through obtaining the microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal and carrying out logic operation, so that the accuracy and the reliability of a judgment result are effectively improved. Therefore, when the user remotely controls and monitors the state of the isolating switch by the control method, whether the gate is in place can be accurately and reliably judged, so that the daily monitoring operation of the high-voltage power grid is simpler and more convenient; and the safety of operators and a power grid system can be further ensured.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a control method of a disconnector according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a logic operation of an output gate state signal according to a third embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a control device of a disconnector according to a sixth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a first embodiment of the present invention provides a method for controlling an isolation switch, including the following steps:
and S1, acquiring a gate control instruction sent by a remote control end.
In the embodiment of the present invention, the gate control instruction may be a switching-off control instruction or a switching-on control instruction; the remote control end may be any device capable of sending a gate control instruction, such as a controller, a processor, and the like, which is not limited in this respect.
And S2, starting a motor according to the gate control command so that the motor controls the gate to act.
Specifically, the gate movement is limited to the gate separating movement and the gate closing movement. The processor receives and identifies the gate control instruction, and when the gate control instruction is a brake opening control instruction, the processor starts the motor and controls the motor to perform brake opening action; and when the gate control instruction is a closing control instruction, the processor starts the motor and controls the motor to perform closing action.
Illustratively, the motor is provided with a main shaft, the main shaft is connected with the motor and a gate of the isolating switch, and a knife switch of the gate is arranged at one end of the main shaft and can rotate along with the main shaft. When the motor performs the opening action, the motor controls the main shaft to drive the switch blade to rotate towards the opening direction; when the motor performs a closing action, the motor controls the main shaft to drive the knife switch to rotate towards the closing direction.
S3, acquiring a motor state signal in real time, and acquiring a gate monitoring signal after a preset time interval when judging that the gate action has no fault according to the motor state signal;
in an embodiment of the invention, the motor status signals comprise at least a motor current signal and a spindle torque signal; then, the obtaining of the motor state signal in real time and the determining of no fault of the gate action according to the motor state signal specifically include:
acquiring a current value of the motor current signal and a torque value of the main shaft torque signal;
comparing the current value with a first threshold value, and when the current value is smaller than or equal to the first threshold value, determining that the motor current is not abnormal;
comparing the torque value with a second threshold value and a third threshold value, and judging that the main shaft torque is not abnormal when the torque value is larger than the second threshold value and smaller than the third threshold value;
and when the motor current and the main shaft torque are not abnormal, judging that the gate action has no fault.
S4, outputting a gate state signal according to the gate monitoring signal;
in the embodiment of the present invention, the gate monitoring signal may only include a microswitch monitoring signal and a video monitoring signal; then, the outputting a gate state signal according to the gate monitoring signal specifically includes:
and carrying out logic operation according to the microswitch monitoring signal and the video monitoring signal, and outputting a gate state signal.
S5, determining the gate in-place condition according to the gate state signal and the gate control instruction;
in this embodiment, the gate control instruction includes an opening control instruction and a closing control instruction; then, the determining the gate in-place situation according to the gate state signal and the gate control instruction specifically includes:
when the gate state signal is a gate closing position signal and the control instruction is a closing control instruction, judging that the gate is closed in place;
when the gate state signal is a gate separating signal and the control instruction is a gate separating control instruction, judging that the gate is in place;
and when the gate state signal and the control command are in other conditions, judging that the gate is not in place.
And S6, sending a gate state instruction to the remote control end according to the gate in-place condition.
In this embodiment, the gate state instruction includes a gate closing and in-place instruction, a gate separating and in-place instruction, and a gate not-in-place warning instruction; then, the sending a gate state instruction to the remote control end according to the gate in-place condition specifically includes:
when the gate is judged to be in place, controlling the motor to stop and sending a gate in-place command to the remote control end;
when the gate is judged to be in place in a separated position, controlling the motor to stop and sending a gate in-place in separated position instruction to the remote control end;
and when the gate is not in place, controlling the motor to stop and sending a gate non-arrival warning instruction to the remote control end.
In summary, the embodiment of the present invention provides a method for controlling an isolating switch, which obtains a motor status signal in real time through remote communication; after the condition that the gate does not have a fault is confirmed, the gate in-place condition is judged, and the gate in-place condition is confirmed by acquiring a microswitch monitoring signal and a video monitoring signal and carrying out logical operation, so that the accuracy and the reliability of a judgment result are effectively improved. Therefore, when the user remotely controls and monitors the state of the isolating switch by the control method, whether the gate is in place can be accurately and reliably judged, the remote control and state monitoring functions of the isolating switch are successfully realized, and the daily monitoring operation of the high-voltage power grid is simpler and more convenient; and the safety of operators and a power grid system can be further ensured.
In order to facilitate an understanding of the invention, some preferred embodiments of the invention will now be described.
Second embodiment of the invention:
on the basis of the first embodiment of the present invention, the step S3 of acquiring a motor status signal in real time, determining that the gate operation has not failed, and determining that the gate operation has failed according to the motor status signal further includes:
acquiring a current value of the motor current signal and a torque value of the main shaft torque signal;
comparing the current value to a first threshold value; when the current value is larger than a first threshold value, judging that the gate action has a fault;
comparing the torque value with a second threshold value and a third threshold value; and when the torque value is smaller than a second threshold value or larger than a third threshold value, judging that the gate action is failed.
And when the gate action is judged to be failed, controlling the motor to stop working and sending a failure warning instruction to the remote control end.
In this embodiment, the motor working state is monitored by acquiring a motor state signal in real time, and when a fault occurs, the motor is stopped working in time and a fault warning signal is fed back, so that abnormal actions of the gate can be effectively and timely prevented, and abnormal actions of the gate caused by the motor fault are prevented, thereby bringing security threats to the power grid.
Third embodiment of the invention:
in a third embodiment of the present invention, the gate monitoring signal includes a micro switch monitoring signal, a video monitoring signal, and an auxiliary switch monitoring signal; then, the outputting a gate state signal according to the gate monitoring signal specifically includes:
and carrying out logic operation according to the microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal, and outputting a gate state signal.
In a fourth embodiment of the present invention, the microswitch monitoring signal comprises a microswitch on signal and a microswitch off signal;
the video monitoring signals comprise video combination signals and video separation signals;
the auxiliary switch monitoring signals comprise auxiliary switch on-position signals and auxiliary switch off-position signals;
the gate state signal comprises a gate closing signal, a gate separating signal and a gate abnormal signal;
then, carry out logical operation according to micro-gap switch monitoring signal, video monitoring signal and auxiliary switch monitoring signal, output gate state signal specifically includes:
when the microswitch monitoring signal is a microswitch on-position signal, the video monitoring signal is a video on-position signal and the auxiliary switch monitoring signal is an auxiliary switch on-position signal, the output gate state signal is a gate on-position signal;
when the microswitch monitoring signal is a microswitch indexing signal, the video monitoring signal is a video indexing signal and the auxiliary switch monitoring signal is an auxiliary switch indexing signal, the output gate state signal is a gate indexing signal;
when the micro switch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal are in other conditions, the output gate state signal is a gate abnormal signal.
Fig. 2 shows an example of outputting a gate state signal by performing a logic operation based on the microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal, as shown in the figure:
a uses binary value 01 to represent the closed bit, 10 to represent the partial bit, and 11 to represent the abnormal;
b, when the auxiliary switch is monitored to be in the on position, returning an auxiliary switch on position signal 01; when the auxiliary switch is monitored to be in a position division state, returning an auxiliary switch position division signal 10; when the microswitch is monitored to be in a closed position, a microswitch closed position signal 01 is returned; when the microswitch is monitored to be in a position division state, returning a microswitch position division signal 10; when the micro switch is monitored to be neither on-position nor off-position or the micro switch is in fault, returning to a micro switch abnormal signal 11; when the video identifies that the gate is in the closed position, returning a video closed position signal 01; when the video identifies that the gate is a sub-position, returning a video sub-position signal 10; when the video identifies that the gate is not a branch bit or a closed bit or the video identifies a fault, returning a video abnormal signal 11;
and C, performing AND operation on the returned microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal. Only when the microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal are all closing signals 01, the operation result is 01, and the gate state signal is a gate closing signal; only when the microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal are respectively a position division signal 10, the operation result is 10, and the gate state signal is a gate closing signal; when the microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal have a branch signal, a close signal or an abnormal signal at the same time, the operation result is 11, and the gate state signal is a gate abnormal signal.
In the embodiment, the state of the monitoring auxiliary switch is increased while the trigger state of the microswitch and the position state of the video identification gate are monitored, and a triple gate monitoring signal is obtained to perform and operation to judge the state of the gate, so that the judging process of the separating and closing states of the gate is more rigorous, accurate and reliable, and the reliability and the safety of the control method of the isolating switch in the embodiment are improved.
The fourth embodiment of the present invention:
under the influence of environmental factors in the switch, the contact part of the contact of the disconnecting switch may have surface oxidation, contact looseness and other phenomena, which may cause poor contact of the contact and overlarge contact resistance, resulting in current-carrying fault, and even may cause accidents such as overhigh temperature and even burnout of the contact, so the method for controlling the disconnecting switch provided by the fourth embodiment of the present invention may further include, on the basis of the first embodiment of the present invention: monitoring internal environment parameters of the isolating switch in real time, and adjusting the internal environment of the isolating switch according to the internal environment parameters; the internal environmental parameters include at least a temperature parameter and a humidity parameter.
In this embodiment, through monitoring environmental factors such as the humidity and the temperature to isolator internal environment, can prevent or slow down the oxidation fault process of isolator contact can also reach the effect that in time discovers accident potential and gets rid of.
Referring to fig. 3, a fifth embodiment of the present invention provides a control device 1 for a disconnecting switch, which is characterized by at least comprising:
the signal acquisition module 11 is used for acquiring a gate control instruction sent by a remote control end;
a motor control module 12 for controlling the start and stop of the motor;
the fault judgment module 13 is used for acquiring a motor state signal in real time and judging whether the gate action has a fault according to the motor state signal;
the gate in-place judging module 14 is used for acquiring a gate monitoring signal, outputting a gate state signal according to the gate monitoring signal and determining the gate in-place condition according to the gate state signal and the gate control instruction;
and the signal sending module 15 is used for sending a gate state instruction to the remote control end.
In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines.
Further, the control device of the isolating switch further comprises a memory and a computer program stored in the memory and executable on the processor, such as a control program of the isolating switch. When the control device of the disconnecting switch executes the computer program, the steps in the control method embodiment of the disconnecting switch, such as steps S1 to S6 shown in fig. 1, are implemented, or the functions of each module/unit in the device embodiment, such as a gate in-place judging module, are implemented.
Illustratively, the computer program may be partitioned into one or more modules/units that are stored in the memory and executed by the processor to implement the invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used for describing the execution process of the computer program in the terminal device. The memory may be used for storing the computer programs and/or modules, and may mainly include a program storage area and a data storage area. Wherein, the module/unit integrated with the control device of the isolating switch can be stored in a computer readable storage medium if the module/unit is realized in the form of a software functional unit and sold or used as an independent product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
A sixth embodiment of the present invention provides a control system for an isolating switch, which is characterized by at least comprising an isolating switch, a motor, a remote control end, a monitoring assembly and a control device for the isolating switch; the isolating switch is connected with the motor, and the motor, the remote control end and the monitoring assembly are respectively connected with the control device.
In particular, the isolating switch can comprise a switch gate, a microswitch and an auxiliary switch. The remote control end may be any device capable of sending a gate control command signal, which is not limited in this respect. The monitoring assembly can comprise a current transformer, a torque sensor, a microswitch monitoring device, an auxiliary switch monitor and a camera, the current transformer is connected to the control device of the isolating switch to obtain the current of the motor, the function is completely independent, and even if the current transformer is in a fault condition, the motor control gate action cannot be influenced; monitoring data of the torque sensor can be accessed to the control device of the isolating switch through a direct current small signal to obtain the working torque of the main shaft; the camera can be accessed to the control device of the isolating switch through an Ethernet interface supporting network transmission function expansion and is used for shooting a real-time video of the position of the gate, and the camera, the micro switch monitoring equipment and the auxiliary switch monitor jointly monitor the state of the gate to judge whether the gate acts in place.
Preferably, the isolating switch is mechanically connected with the motor through a spindle connecting rod, and the motor, the remote control end and the monitoring assembly are all electrically connected with the control device of the isolating switch provided by the fifth embodiment through an aviation socket. The aviation socket can be divided into a power aviation socket and a signal aviation socket; one end of the power aviation socket is connected with a main power supply, and each interface at the other end is electrically connected with the motor, the remote control end and the monitoring assembly through an aviation plug connecting wire and supplies electricity to the motor, the remote control end and the monitoring assembly; the signal aviation socket provides a plurality of interfaces for the control device to be electrically connected with the motor, the remote control end and the monitoring assembly respectively so as to realize communication. Specially, because the row both made things convenient for the wiring and can realize the quick replacement of wiring in the aviation, still possess the characteristics of wiring mistake proofing simultaneously, so, the control system of the isolator who adopts row's of inserting wiring mode in the aviation that this embodiment provided has the quick nimble, accurate reliable advantage of wiring, and the wiring of convenient newly-built station is prefabricated.
Preferably, the control system of the disconnecting switch provided by the embodiment of the present invention may further include a temperature and humidity sensor and a controller, where the temperature and humidity controller may be accessed to the control device of the disconnecting switch through an RS485 serial port to monitor an internal environment of the disconnecting switch. More preferably, the temperature of the internal environment of the isolating switch can be detected through the infrared imager, and the temperature of the isolating switch can be monitored on line in real time under the condition of no power failure and no influence on the operation of the whole equipment.
Furthermore, the control system of the disconnecting switch provided by the embodiment of the invention can further comprise an external display device, wherein the external display device can be accessed to the control device of the disconnecting switch through an RS485 serial port, so that an operator can visually observe the internal environment, the motor running state and the gate action state of the disconnecting switch in real time. The external display device can be an intelligent display device such as a desktop computer, a palm computer, a mobile terminal and an intelligent panel.
It should be noted that the above-described control system embodiments of the disconnecting switch are merely illustrative, where the devices or units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A method of controlling a disconnector, comprising:
acquiring a gate control instruction sent by a remote control end;
starting a motor according to the gate control instruction so that the motor controls the gate to act;
acquiring a motor state signal in real time, and acquiring a gate monitoring signal after a preset time interval when judging that the gate action does not have a fault according to the motor state signal;
outputting a gate state signal according to the gate monitoring signal;
determining the gate in-place condition according to the gate state signal and the gate control instruction;
and sending a gate state instruction to the remote control end according to the gate in-place condition.
2. The control method of the isolating switch according to claim 1, wherein the gate monitoring signal comprises a micro switch monitoring signal and a video monitoring signal; then, the outputting a gate state signal according to the gate monitoring signal specifically includes:
and carrying out logic operation according to the microswitch monitoring signal and the video monitoring signal, and outputting a gate state signal.
3. The control method of the isolating switch according to claim 1, wherein the gate monitoring signal comprises a micro switch monitoring signal, a video monitoring signal and an auxiliary switch monitoring signal; then, the outputting a gate state signal according to the gate monitoring signal specifically includes:
and carrying out logic operation according to the microswitch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal, and outputting a gate state signal.
4. A control method of a disconnector according to claim 3,
the microswitch monitoring signals comprise microswitch on-position signals and microswitch off-position signals;
the video monitoring signals comprise video combination signals and video separation signals;
the auxiliary switch monitoring signals comprise auxiliary switch on-position signals and auxiliary switch off-position signals;
the gate state signal comprises a gate closing signal, a gate separating signal and a gate abnormal signal;
then, carry out logical operation according to micro-gap switch monitoring signal, video monitoring signal and auxiliary switch monitoring signal, output gate state signal specifically includes:
when the microswitch monitoring signal is a microswitch on-position signal, the video monitoring signal is a video on-position signal and the auxiliary switch monitoring signal is an auxiliary switch on-position signal, the output gate state signal is a gate on-position signal;
when the microswitch monitoring signal is a microswitch indexing signal, the video monitoring signal is a video indexing signal and the auxiliary switch monitoring signal is an auxiliary switch indexing signal, the output gate state signal is a gate indexing signal;
when the micro switch monitoring signal, the video monitoring signal and the auxiliary switch monitoring signal are in other conditions, the output gate state signal is a gate abnormal signal.
5. The control method of the isolating switch according to claim 4, wherein the gate control command comprises a switching-off control command and a switching-on control command; then, the determining the gate in-place situation according to the gate state signal and the gate control instruction specifically includes:
when the gate state signal is a gate closing position signal and the control instruction is a closing control instruction, judging that the gate is closed in place;
when the gate state signal is a gate separating signal and the control instruction is a gate separating control instruction, judging that the gate is in place;
and when the gate state signal and the control command are in other conditions, judging that the gate is not in place.
6. The control method of the isolating switch as claimed in claim 5, wherein the gate state command comprises a gate on bit in-place command, a gate off bit in-place command and a gate not-in-place warning command; then, the sending a gate state instruction to the remote control end according to the gate in-place condition specifically includes:
when the gate is judged to be in place, controlling the motor to stop and sending a gate in-place command to the remote control end;
when the gate is judged to be in place in a separated position, controlling the motor to stop and sending a gate in-place in separated position instruction to the remote control end;
and when the gate is not in place, controlling the motor to stop and sending a gate non-arrival warning instruction to the remote control end.
7. The control method of an isolating switch according to claim 6, characterized in that the motor status signal comprises at least a motor current signal and a spindle torque signal; then, the obtaining of the motor state signal in real time and the determining of no fault of the gate action according to the motor state signal specifically include:
acquiring a current value of the motor current signal and a torque value of the main shaft torque signal;
comparing the current value with a first threshold value, and when the current value is smaller than or equal to the first threshold value, determining that the motor current is not abnormal;
comparing the torque value with a second threshold value and a third threshold value, and judging that the main shaft torque is not abnormal when the torque value is larger than the second threshold value and smaller than the third threshold value;
and when the motor current and the main shaft torque are not abnormal, judging that the gate action has no fault.
8. A control device for a disconnector, characterized by comprising at least:
the signal acquisition module is used for acquiring a gate control instruction sent by a remote control end;
the motor control module is used for controlling the starting and stopping of the motor;
the fault judgment module is used for acquiring a motor state signal in real time and judging whether the gate action has a fault according to the motor state signal;
the gate in-place judging module is used for acquiring a gate monitoring signal, outputting a gate state signal according to the gate monitoring signal and determining the gate in-place condition according to the gate state signal and the gate control instruction;
and the signal sending module is used for sending a gate state instruction to the remote control end.
9. A control system for a disconnector, characterized by comprising at least a disconnector, an electric motor, a remote control terminal, a monitoring assembly and a control device for a disconnector according to claim 9; the isolating switch is connected with the motor, and the motor, the remote control end and the monitoring assembly are respectively connected with the control device.
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| CN202110893708.4A CN113741242A (en) | 2021-08-02 | 2021-08-02 | Control method, device and system of isolating switch |
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| CN202110893708.4A CN113741242A (en) | 2021-08-02 | 2021-08-02 | Control method, device and system of isolating switch |
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