CN106933135A - A kind of ocs isolating switch power remote monitor terminal - Google Patents
A kind of ocs isolating switch power remote monitor terminal Download PDFInfo
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- CN106933135A CN106933135A CN201511029466.5A CN201511029466A CN106933135A CN 106933135 A CN106933135 A CN 106933135A CN 201511029466 A CN201511029466 A CN 201511029466A CN 106933135 A CN106933135 A CN 106933135A
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- 230000011664 signaling Effects 0.000 claims abstract description 30
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims description 74
- 230000009471 action Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 14
- 239000013307 optical fiber Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25314—Modular structure, modules
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Abstract
The present invention relates to a kind of ocs isolating switch power remote monitor terminal, including：Power module, central processing unit, control circuit, remote control circuit and remote signalling circuit；Wherein, electric power source pair of module ocs isolating switch power remote monitor terminal provides working powers at different levels；Control circuit produces control signal according to remote control order, and control signal is input into remote control circuit；Remote control circuit drives remote control separating brake switch, the disconnection of remote control closing switch and closure according to the control signal that control circuit is produced, and directly electrical source of power is fed at isolator operating mechanism by remote control separating brake switch, remote control closing switch；Remote signalling circuit collection ocs isolating switch is to be in a point position position in conjunction position position；The remote control order that central processing unit issues Surveillance center is sent to control circuit；Meanwhile, the ocs isolating switch information that remote signalling circuit is gathered is dealt with, and transmit to Surveillance center, realize ocs isolating switch power remote monitor.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a contact net isolating switch telecontrol monitoring terminal.
Background
In the traction power supply system of the electrified railway and the urban rail transit, the isolating switch is used as important switch equipment, and the action reliability of the isolating switch is directly related to the running safety of the locomotive. In the field of remote control of disconnecting switches of overhead contact systems of electrified railways, optical fiber control schemes are commonly adopted at present, namely, a local remote control monitoring terminal and an electric operating mechanism are installed on an outdoor disconnecting switch column together and used for monitoring each disconnecting switch. The substation is provided with a monitoring master station which communicates with all local telecontrol monitoring terminals in a substation through an optical fiber network, so that all isolating switches in the substation are monitored, and a system diagram is shown in fig. 1. The optical fiber control scheme is widely adopted by virtue of the advantages of reliable optical fiber communication and strong anti-electromagnetic interference capability, but in actual operation, the phenomena of misoperation and refusal of the isolating switch occur occasionally, and a lot of troubles are brought to railway operation departments.
The problems are mainly caused by the control mode of the isolating switch remote monitoring terminal. Fig. 2 is a control circuit diagram of a conventional telecontrol monitoring terminal. Under the control scheme, when a remote control command is executed, the remote control monitoring terminal outputs a short pulse closing signal, corresponding contactor contacts are closed through the self-holding loop and the interlocking loop of the operating mechanism, a closing and opening power supply is output, and then the motor is started to drive the isolating switch to perform closing and opening operations.
Obviously, the action condition of the isolating switch in the traditional scheme is only a short pulse closing signal output by the telecontrol monitoring terminal. Because the operating mechanism is continuously electrified, the electric circuit of the electrified railway has a high chance of inducing a short pulse signal or a high electromotive force in a strong electromagnetic interference environment, which causes the misoperation of the isolating switch. Moreover, a short circuit between cables from the remote control outlet of the remote control monitoring terminal to the remote control command inlet of the operating mechanism can also cause the misoperation of the operating mechanism and the misoperation of the isolating switch. The conventional control scheme needs to pass through a series of processes of pulse output, self-holding, interlocking and closing of the contactor, and then power supply output can be realized by means of complex peripheral circuits, and the peripheral circuits are easily broken down outdoors due to the influence of adverse factors such as severe environment, vibration of a locomotive passing by and the like, so that a control circuit fails, and the disconnecting switch fails.
In summary, although the conventional optical fiber control scheme has the advantage of reliable communication between the outdoor remote monitoring terminal and the in-house monitoring master station, it cannot avoid the outdoor complex electrical loop from being subjected to electromagnetic interference, and at the same time, it cannot avoid the high failure rate of the complex electrical loop, which is an inherent defect of the conventional optical fiber scheme and is also a key factor causing malfunction and failure of the disconnecting switch.
Disclosure of Invention
The technical scheme fully absorbs the teaching that a complex peripheral circuit of the traditional scheme is easy to interfere and has high failure rate, and the terminal remote control output adopts a mode of directly feeding out a power supply to drive a motor of an operating mechanism to act, so that a complex control circuit in the operating mechanism is omitted. The terminal is in a modular design, and each device can be provided with a plurality of sets of monitoring modules for monitoring the multi-way isolating switch.
In order to achieve the above object, the present invention provides a contact net isolating switch remote control monitoring terminal, which comprises: the remote control device comprises a power supply module, a central processing unit, a control circuit, a remote control circuit and a remote signaling circuit; wherein,
the power supply module is used for providing working power supplies of various levels for the telecontrol monitoring terminal of the contact network isolating switch;
the control circuit is used for generating a control signal according to a telemechanical control command and inputting the control signal to the remote control circuit;
the remote control circuit is used for driving the remote control switch-off switch and the remote control switch-on switch to be switched off and on according to the control signal generated by the control circuit, and directly feeding the power supply to the operating mechanism of the isolating switch through the remote control switch-off switch and the remote control switch-on switch;
the remote signaling circuit is used for acquiring whether the contact net isolating switch is located at an on-position or an off-position;
the central processing unit is used for sending the telecontrol control command issued by the monitoring center to the control circuit; meanwhile, the information of the contact net isolating switch collected by the remote signaling circuit is processed and transmitted to a monitoring center, so that the telecontrol monitoring of the contact net isolating switch is realized.
Preferably, the control circuit controls the closing state of the remote control opening switch and the remote control closing switch to have corresponding time limits, the time limit is set to be longer than the action time of the isolating switch operating mechanism, and when the time limit is reached, the opening switch or the closing switch is automatically switched off to cut off the power supply.
The technical scheme has the following beneficial effects:
the contact net isolating switch telecontrol monitoring terminal provided by the invention adopts a direct control mode, cuts off a power supply loop when no remote control operation is carried out, can ensure that an isolating switch operating mechanism is not electrified in a conventional state, and effectively avoids misoperation; in addition, the terminal saves a complex peripheral control loop, effectively avoids the influence of strong electromagnetic interference, reduces fault points and effectively improves the operation stability of the system; on the one hand, the misoperation is effectively avoided.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a system diagram of a conventional fiber control scheme;
FIG. 2 is a schematic diagram of a conventional telemechanical monitoring terminal wiring;
fig. 3 is a block diagram of a telecontrol monitoring terminal of a contact network disconnecting switch provided by the invention;
fig. 4 is a schematic circuit diagram of a remote control circuit in the contact network disconnecting switch telemechanical monitoring terminal;
FIG. 5 is a wiring diagram of the remote control circuit of the monitor terminal and the DC motor operating mechanism;
FIG. 6 is a wiring diagram of the remote control circuit of the monitor terminal and the operating mechanism of the AC motor;
FIG. 7 is a system diagram illustrating an exemplary centralized monitoring scheme for a terminal according to the present invention;
fig. 8 is a diagram of an exemplary system for a distributed monitoring scheme of a terminal according to 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.
The working principle of the technical scheme is as follows: the contact net isolating switch telecontrol monitoring terminal integrates an onboard remote control circuit, a remote signaling circuit and a control circuit, and telecontrol control and remote signaling signal acquisition of one isolating switch are realized. The remote control circuit is provided with two groups of controllable switches, one group is used for opening (called opening switch K1 in the following) and the other group is used for closing (called closing switch K2 in the following). The two groups of controllable switches are closed with time limits, and are automatically opened after the time limits are reached, and the closing time limits can be manually set. The opening switch is provided with two groups of contacts, the left side of the first contact is connected with the negative pole of the remote control power supply (the zero line if the remote control power supply is alternating current), the right side of the first contact is output to a connecting terminal T1 of the device, the left side of the second contact is connected with the positive pole of the remote control power supply (the live line if the remote control power supply is alternating current), and the right side of the second contact is output to a connecting terminal T4 of the device; the closing switch is provided with two groups of contacts, the left side of the first contact is connected with the anode of the remote control power supply (if the remote control power supply is alternating current, the anode is a live wire), the right side of the first contact is output to a connecting terminal T2 of the device, the left side of the second contact is connected with the cathode of the remote control power supply (if the remote control power supply is alternating current, the cathode is a zero wire), and the right side of the second contact is output to a connecting terminal. When the closing switch is closed, the voltage between the connecting terminal T2 and the connecting terminal T3 is in the positive direction, and the positive rotation terminal is connected to the motor positive rotation terminal through the travel switch and can drive the motor to rotate positively; when the opening switch is closed, the voltage between the connection terminal T1 and the connection terminal T4 is in the opposite direction, and the connection is connected to the motor reverse rotation terminal through the travel switch, so that the motor can be driven to reversely rotate.
The actions of the closing switch and the opening switch are controlled by the control circuit, and the control circuit controls the opening switch and the closing switch to keep a disconnected state when no remote control operation is performed; when the remote control is switched on, the control circuit controls the switch-on switch to be switched on according to a fixed time limit; when the opening is remotely controlled, the control circuit controls the opening switch to be closed according to a timing limit. The remote signaling circuit collects position information of the isolating switch through a wiring terminal T5, a wiring terminal T6 and a wiring terminal T7, and remote signaling voltage is loaded between the wiring terminal T5 and the wiring terminal T7 and between the wiring terminal T6 and the wiring terminal T7 through a large resistor. When the auxiliary contact FK1 is closed, the device detects that the voltage between the connecting terminal T5 and the connecting terminal T7 is 0, and then the isolating switch is judged to be closed; when the separating auxiliary contact FK2 is closed, the device detects that the voltage between the connecting terminal T6 and the connecting terminal T7 is 0, and the isolating switch is judged to be separated. The central processing unit CPU is responsible for issuing the telemechanical control command of the upper layer to the corresponding control circuit, uniformly processes the telesignaling information collected by the telemechanical monitoring terminal, and uploads the telesignaling information to the monitoring master station or the dispatching center of the upper layer. The CPU module is provided with an optical fiber interface and an Ethernet interface, and can directly communicate with an upper layer system through an optical fiber network or an Ethernet twisted pair. The power supply provides working power supply of each level for the whole set of device by carrying out certain transformation, current transformation, rectification, voltage stabilization and other transformations.
The power supply and the central processing unit CPU are indispensable components for normal operation of the terminal device, and the operating principle of the terminal device is not significantly different from that of conventional equipment, and will not be described in detail in this patent.
Based on the working principle, the invention provides a contact net isolating switch telecontrol monitoring terminal. As shown in fig. 3, includes: the remote control device comprises a power supply module, a central processing unit, a control circuit, a remote control circuit and a remote signaling circuit; wherein,
the power supply module is used for providing working power supplies of various levels for the telecontrol monitoring terminal of the contact network isolating switch;
the control circuit is used for generating a control signal according to a telemechanical control command and inputting the control signal to the remote control circuit;
the remote control circuit is used for driving the remote control switch-off switch and the remote control switch-on switch to be switched off and on according to the control signal generated by the control circuit, and directly feeding the power supply to the operating mechanism of the isolating switch through the remote control switch-off switch and the remote control switch-on switch;
the remote signaling circuit is used for acquiring whether the contact net isolating switch is located at an on-position or an off-position;
the central processing unit is used for sending the telecontrol control command issued by the monitoring center to the control circuit; meanwhile, the information of the contact net isolating switch collected by the remote signaling circuit is processed and transmitted to a monitoring center, so that the telecontrol monitoring of the contact net isolating switch is realized.
The design principle of the remote control circuit will be emphasized in connection with fig. 4. The remote control circuit includes: the first control switch and the second control switch are controlled by the control circuit and execute corresponding opening and closing actions; wherein,
one end of a first contact of the first control switch is connected with a first access terminal of the remote monitoring terminal, and the other end of the first contact of the first control switch is connected with the other end of a second contact of the second control switch; one end of a second contact of the first control switch is connected with a fourth access terminal of the remote monitoring terminal, and the other end of the second contact of the first control switch is connected with the other end of the first contact of the second control switch; one end of a first contact of the second control switch is connected with a second access terminal of the remote monitoring terminal, and one end of a second contact of the second control switch is connected with a third access terminal of the remote monitoring terminal;
the other end of the first contact of the first control switch and the other end of the second contact of the second control switch are connected with the corresponding interfaces of the same remote control power supply, and the other end of the second contact of the first control switch and the other end of the first contact of the second control switch are connected with the other corresponding interfaces of the same remote control power supply;
a first access terminal of the remote monitoring terminal is connected in series with a first limit switch of the operating mechanism through a first cable, the first limit switch is connected with one end of the motor, a fourth access terminal of the remote monitoring terminal is connected with the other end of the motor through a fourth cable, and when the first control switch and the first limit switch are closed, the remote monitoring terminal outputs a remote control brake-off signal;
the second access terminal of the remote monitoring terminal is connected in series with the second limit switch of the operating mechanism through a second cable, the second limit switch is connected with one end of the motor, the third access terminal of the remote monitoring terminal is connected with the other end of the motor through a third cable, the second control switch and the second limit switch are closed, and then the remote monitoring terminal outputs a remote control closing signal.
For fig. 4, the remote control circuit is internally provided with an opening switch K1 and a closing switch K2. Two groups of contacts of the K1 are respectively connected with a negative electrode (a zero line if the remote control power supply is alternating current) and a positive electrode (a live wire if the remote control power supply is alternating current), and when the K1 is closed, the remote control power supply is directly reversely output to a position between a wiring terminal T1 and a wiring terminal T4; two groups of contacts of the K2 are respectively connected with the anode (live wire if the remote control power supply is AC) and the cathode (zero wire if the remote control power supply is AC), and directly output the remote control power supply to the position between the wiring terminal T2 and the wiring terminal T3 in the positive direction when the K2 is closed. The K1 and K2 are controlled to be opened or closed by a control circuit, the closing of K1 and K2 has a time limit, the closing can be automatically opened after the time limit is reached, the time limit is set to be slightly longer than the action time of the isolating switch, the opening or closing time of the isolating switch is assumed to be 5s, and the closing time limit of K1 and K2 is set to be 6s, so that the opening and closing of the isolating switch are fully and completely guaranteed.
For the embodiment, the remote signaling closing output end of the remote signaling unit is connected with the fifth access terminal of the remote monitoring terminal, and the fifth access terminal of the remote monitoring terminal is connected in series with one end of the closing auxiliary contact of the disconnecting switch operating mechanism through the fifth cable; the remote signaling position-dividing output end of the remote signaling unit is connected with a sixth access terminal of the remote monitoring terminal, and the sixth access terminal of the remote monitoring terminal is connected with one end of the position-dividing auxiliary contact of the isolating switch operating mechanism in series through a sixth cable; and the public end of the remote signaling unit is connected with a seventh access terminal of the remote monitoring terminal, and the seventh access terminal of the remote monitoring terminal is simultaneously connected with the other end of the on-position auxiliary contact of the isolating switch operating mechanism and the other end of the off-position auxiliary contact of the isolating switch operating mechanism through a seventh cable.
Fig. 5 is a wiring diagram of the remote control circuit of the monitor terminal and the dc motor operating mechanism, the opening switch K1 of the monitor terminal passes through the limit switch SQ1 (normally closed, and opened after the disconnecting switch is successfully opened) after passing through the wiring terminal T1, and is connected to the positive and negative terminals of the dc motor of the operating mechanism; and a closing switch K2 of the monitoring terminal passes through a wiring terminal T2 and then passes through a limit switch SQ2 (normally closed, and is disconnected after the disconnecting switch is successfully closed), and is connected to the positive and negative terminals of the direct current motor. When the isolating switch is in the open position, namely the telecontrol switch-on is about to be carried out, the control circuit of the telecontrol monitoring terminal of the invention closes the control K2 and keeps 6 s. At the moment, the remote control power supply is directly loaded to a wiring terminal of the motor in a forward direction through a travel switch SQ1 (which is in a closed state and can be conducted), the motor is powered in the forward direction, the forward rotation is started, the isolating switch is driven to rotate, after the isolating switch is switched on in place, a limit switch SQ1 is switched off, the control power supply is cut off, the motor stops rotating, K2 bounces after the time limit reaches 6s, the remote control power supply is thoroughly cut off, and the remote control switching-on process is finished. The remote control brake-separating method is similar to the method, and is different in that a brake-separating switch K1 is closed, a remote control power supply is reversely loaded on a connecting terminal of a direct current motor through a limit switch SQ2, the motor is reversely electrified, and the motor is started to reversely rotate to drive a disconnecting switch to separate the brake.
Fig. 6 is a wiring diagram of the remote control circuit of the monitor terminal and the ac motor operating mechanism, the output end of the opening switch K1 of the monitor terminal is connected to the ac motor reversing terminal of the operating mechanism through the limit switch SQ1 (normally closed, and opened after the isolating switch is successfully opened); the output end of a closing switch K2 of the monitoring terminal is connected to a forward rotation terminal of the alternating current motor through a limit switch SQ2 (normally closed, and disconnected after the disconnecting switch is successfully closed). The remote control execution process is the same as that of the direct current motor operating mechanism, and is not described again.
The telemechanical monitoring terminal is internally provided with a telemechanical circuit, the remote-mechanical circuit on-position judging end is connected with the operating mechanism on-position auxiliary contact FK1, the remote-mechanical circuit off-position judging end is connected with the operating mechanism off-position auxiliary contact, and the other ends of the two sets of auxiliary contacts are connected with the common end of the telemechanical circuit after being connected in parallel. The remote signaling circuit obtains a remote signaling direct current power supply from the outside of the device, loads the remote signaling direct current power supply between the on-position judging end and the common end through the large resistor, and loads the remote signaling direct current power supply between the on-position judging end and the common end. When the isolating switch is in the on position, namely the auxiliary contact FK1 is closed, the remote signaling circuit detects that the voltage between the remote signaling on position determination end and the public end is 0, and the terminal device determines that the isolating switch is in the on position; when the isolating switch is in the separated position, namely the auxiliary contact FK2 is closed, the remote signaling circuit detects that the voltage between the remote signaling separated position determination end and the public end is 0, and the terminal device determines that the isolating switch is in the separated position. The external remote signaling power supply takes direct current, and electromagnetic interference can be effectively prevented.
Each circuit module in the telecontrol monitoring terminal device can be flexibly configured, and each monitoring module realizes the monitoring of one isolating switch. The terminal device can directly control the isolating switch downwards and can directly communicate with a monitoring main station or a dispatching center through optical fibers or Ethernet upwards. Due to the special design mode, the design of the whole isolating switch telecontrol control system can be more flexible.
Fig. 7 is a typical system diagram of a centralized monitoring scheme of the terminal of the present invention, in which the terminal device of the present invention configures a corresponding number of monitoring modules according to the number of all the substations, installs the monitoring modules in the substation monitoring master station, directly connects all the substations through hard wiring to realize centralized monitoring of all the disconnectors, and directly communicates with the scheduling center through optical fiber or ethernet.
Fig. 8 is a typical system diagram of a distributed monitoring scheme of the terminal of the present invention, in which the terminal of the present invention is installed near each outdoor disconnector in a distributed installation manner, and a set of monitoring modules is configured to implement in-situ monitoring on a single-way disconnector. And the monitoring master station in the substation is communicated with the monitoring master station through the optical fiber or the Ethernet. The monitoring master station in the house processes the data of all the telecontrol monitoring terminals in the house in a unified way and communicates with the dispatching center.
The technical scheme adopts a direct control mode, and directly feeds a power supply to the motor of the isolating switch operating mechanism during remote control operation, thereby omitting a complex peripheral control loop in the traditional scheme, avoiding the isolating switch misoperation possibly caused by outdoor electromagnetic interference, reducing the operation refusal of the isolating switch caused by control loop elements and wiring faults, and improving the reliability of a telemechanical system. The terminal adopts a modular design, the number of the monitoring modules can be adjusted according to the number of the isolating switches or different application occasions, and when centralized monitoring is carried out, the terminal device is provided with a plurality of sets of monitoring modules and is arranged in a monitoring master station; when the terminal device is applied to distributed monitoring, the terminal device is provided with a single set of monitoring module, is arranged near the isolating switch and is communicated with the monitoring center through a communication network, and therefore the terminal device has strong flexibility and adaptability.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (2)
1. The utility model provides a contact net isolator telemechanical monitor terminal, includes: a power module and a central processing unit; it is characterized by also comprising:
the remote control circuit comprises a control circuit, a remote control circuit and a remote signaling circuit; wherein,
the power supply module is used for providing working power supplies of various levels for the telecontrol monitoring terminal of the contact network isolating switch;
the control circuit is used for generating a control signal according to a telemechanical control command and inputting the control signal to the remote control circuit;
the remote control circuit is used for driving the remote control switch-off switch and the remote control switch-on switch to be switched off and on according to the control signal generated by the control circuit, and directly feeding the power supply to the operating mechanism of the isolating switch through the remote control switch-off switch and the remote control switch-on switch;
the remote signaling circuit is used for acquiring whether the contact net isolating switch is located at an on-position or an off-position;
the central processing unit is used for sending the telecontrol control command issued by the monitoring center to the control circuit; meanwhile, the information of the contact net isolating switch collected by the remote signaling circuit is processed and transmitted to a monitoring center, so that the telecontrol monitoring of the contact net isolating switch is realized.
2. The monitoring terminal of claim 1, wherein the control circuit controls the closing state of the remote-controlled opening switch and the remote-controlled closing switch to have a corresponding time limit, the time limit is set to be longer than the action time of the operating mechanism of the isolating switch, and when the time limit is reached, the opening switch or the closing switch is automatically opened to cut off the power supply.
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| CN201511029466.5A CN106933135A (en) | 2015-12-31 | 2015-12-31 | A kind of ocs isolating switch power remote monitor terminal |
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| CN201511029466.5A CN106933135A (en) | 2015-12-31 | 2015-12-31 | A kind of ocs isolating switch power remote monitor terminal |
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| CN109525038A (en) * | 2018-11-29 | 2019-03-26 | 国电南京自动化股份有限公司 | Ocs isolating switch monitoring system method of controlling security and system |
| CN113629873A (en) * | 2021-08-16 | 2021-11-09 | 北京瑞凯软件科技开发有限公司 | Contact net isolator monitoring unit based on IGBT realizes |
| CN113933567A (en) * | 2021-10-29 | 2022-01-14 | 广东电网有限责任公司 | GIS isolator on-off state on-line monitoring system |
| CN115327360A (en) * | 2022-08-09 | 2022-11-11 | 北京南凯自动化系统工程有限公司 | Intelligent testing method and system for direct control device of isolating switch of railway contact network |
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| CN113629873B (en) * | 2021-08-16 | 2024-03-26 | 北京瑞凯软件科技开发有限公司 | Contact net isolator monitoring unit based on IGBT is realized |
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Application publication date: 20170707 |