CN117517942A - Tripping monitoring loop and system - Google Patents
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- CN117517942A CN117517942A CN202311346905.XA CN202311346905A CN117517942A CN 117517942 A CN117517942 A CN 117517942A CN 202311346905 A CN202311346905 A CN 202311346905A CN 117517942 A CN117517942 A CN 117517942A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 127
- 239000007787 solid Substances 0.000 claims description 17
- 230000009471 action Effects 0.000 claims description 15
- 230000002159 abnormal effect Effects 0.000 description 11
- 238000011065 in-situ storage Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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Abstract
The present application proposes a trip monitoring circuit and system comprising: the control module is used for controlling the motor power supplies with a plurality of different voltage levels to provide starting or shutting off; the first monitoring module is connected with the accident tripping branch in the control module and used for monitoring the accident tripping branch in real time; the second monitoring module is connected with the on-site tripping branch in the control module and is used for monitoring the on-site tripping branch in real time; and the third monitoring module is connected with the remote tripping branch in the control module and is used for monitoring the remote tripping branch in real time. The monitoring function of the tripping branch circuit in the motor power switch can be realized by adding the first monitoring module, the second monitoring module and the third monitoring module, an operator can conveniently position to a fault position at the first time when the motor power supply trips without instructions, the working efficiency of the operator is greatly improved, particularly, an important motor affecting the operation of a thermal power unit can be timely confirmed when the motor breaks down, the time for maintaining and maintaining is shortened, and the motor has wide applicability.
Description
Technical Field
The present disclosure relates to the field of power equipment control and application technologies, and in particular, to a trip monitoring circuit and system.
Background
In the operation process of the motor power supply, if DCS control cards (DCS is an english abbreviation of a distributed control system Distributed Control System, also called a distributed control system, so-called a distributed control system, or called a distributed system) are novel computer control systems which are developed and evolved on the basis of the centralized control system, compared with the centralized control system, the novel computer control system is a multi-stage computer system which is composed of a process control stage and a process monitoring stage and takes a communication network as a link, and integrates 4C technologies such as computers, communication, display and control, etc., the basic ideas are distributed control, centralized operation, hierarchical management, flexible configuration and convenient configuration), an on-site trip button or an accident trip button, and the switching of the motor can be caused to enter a non-instruction trip stage, namely, the switching is abnormally tripped under the condition of non-manual active operation, for example, the DCS control cards automatically send a trip instruction due to faults, or the accident trip button is in a short circuit due to internal wetting. At the moment, all motor power supply loops which possibly cause tripping are required to be checked, so that the accident handling difficulty and the accident handling time are increased, and the timely troubleshooting of operators is not facilitated.
It should be noted that the foregoing description of the background art is only for the purpose of facilitating a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background section of the present application.
Disclosure of Invention
The embodiment of the application provides a tripping monitoring loop and a tripping monitoring system.
Embodiments of a first aspect of the present application provide a trip monitoring circuit comprising:
the control module is used for controlling the motor power supplies with a plurality of different voltage levels to be started or shut down;
the first monitoring module is connected with the accident tripping branch in the control module and used for monitoring the accident tripping branch in real time;
the second monitoring module is connected with the on-site tripping branch circuit in the control module and used for monitoring the on-site tripping branch circuit in real time;
and the third monitoring module is connected with the remote tripping branch in the control module and used for monitoring the remote tripping branch in real time.
Optionally, the first monitoring module includes: electromechanical relays and solid state relays.
Optionally, the second monitoring module includes: electromechanical relays and solid state relays.
Optionally, the third monitoring module includes: electromechanical relays and solid state relays.
Optionally, the electromechanical relay comprises a current-type relay, and the action current of the accident trip branch, the action current of the local trip branch and the action current of the remote trip branch are all greater than the action current of the electromechanical relay.
Optionally, the rated voltage of the electromechanical relay and the bus voltage of the trip monitoring loop are equal; the rated voltage of the solid state switch is equal to the bus voltage of the trip monitoring loop.
Optionally, the first monitoring module, the second monitoring module and the third monitoring module are all connected with the control module through a card type connection mode or a hinge connection mode.
Optionally, the control module includes: power switch, change over switch, on-the-spot trip button, on-the-spot switch-on button, accident trip button, remote trip signal switch, remote switch-on signal switch, switch trip coil and switch-on coil, wherein:
the first end of the power switch is connected with the first end of the motor power supply; the first end of the change-over switch is connected with the second end of the power switch; the first end of the on-site trip button is connected with the second end of the change-over switch; the first end of the on-site closing button is connected with the second end of the change-over switch and the third end of the change-over switch; the first end of the accident tripping button is connected with the second end of the power switch; a first end of the first monitoring module is connected with a second end of the accident tripping button; the first end of the second monitoring module is connected with the second end of the on-site trip button; the first end of the remote tripping signal switch and the first end of the remote closing signal switch are connected with the third end of the change-over switch; the first end of the third monitoring module is connected with the second end of the remote tripping signal switch; the first end of the switch tripping coil is connected with the second end of the first monitoring module, the second end of the second monitoring module and the second end of the third monitoring module, and the second end of the switch tripping coil is connected with the second end of the motor power supply; the first end of the switch closing coil is connected with the second end of the on-site closing button and the second end of the remote closing signal switch, and the second end of the switch closing coil is connected with the second end of the motor power supply.
Optionally, the motor power supply includes: ac motor, dc motor.
Embodiments of a second aspect of the present application provide a trip monitoring system comprising: a trip monitoring circuit as provided by embodiments of the first aspect of the present disclosure.
The technical scheme provided by the embodiment of the application at least brings the following beneficial effects:
the monitoring function of the tripping branch circuit in the motor power switch can be realized by adding the first monitoring module, the second monitoring module and the third monitoring module, the switch cabinet in the motor power system can be reasonably utilized, abnormal action signals monitored by the first monitoring module, the second monitoring module and the third monitoring module are transmitted to the centralized control center, operators can conveniently position to a fault position at the first time when the motor power supply trips without instructions, the working efficiency of the operators is greatly improved, particularly the important motor affecting the operation of the thermal power unit is greatly improved, the faults can be timely confirmed when the motor breaks down, the maintenance time is shortened, and the system has wide applicability.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a control loop of a motor power supply according to an example of the present application;
fig. 2 is a schematic diagram of a trip monitoring circuit provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present application. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the present application as detailed in the accompanying claims.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the application. As used in this application in the examples and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present application. The words "if" and "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination", depending on the context.
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the like or similar elements throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.
It should be noted that the trip monitoring circuit provided in any of the embodiments of the present application may be implemented alone or in combination with possible implementation methods in other embodiments, and may also be implemented in combination with any of the technical solutions of the related art.
Fig. 1 is a schematic structural diagram of a control loop of a motor power supply according to an example of the present application. As shown in fig. 1, the control loop of the motor power supply includes: a power switch 1, a change-over switch 2, a local tripping button 3, a local closing button 4, an accident tripping button 5, a remote tripping signal switch 6, a remote closing signal switch 7, a switch tripping coil 8 and a switch closing coil 9, wherein:
when the power switch 1 is switched on, the control loop of the motor power supply can be electrified, a breaker (not shown in fig. 1, the short-circuit device mainly plays roles of short-circuit and overload protection and is also provided with leakage protection, a common breaker comprises an air switch) can select a control mode of 'far away' or 'in situ' (wherein 'in situ' refers to control of the place where the controlled equipment is located, namely in situ control, refers to direct operation of the switch in situ, usually in a box-type transformer substation), and 'far away' refers to a background control or remote centralized control system, which usually adopts an RTU (real time unit), wherein the English of the RTU is totally called Remote Terminal Unit, and is translated into a remote control unit device which is responsible for monitoring and controlling field signals and industrial equipment; when the on-site closing button 4 is turned on, the switch closing coil 9 is electrified, so that the control loop realizes the function of on-site closing of the switch.
If the change-over switch 2 is connected to the 'remote' mode, the control loop of the motor power supply can realize the 'remote' operation function through the distributed control system DCS or the remote centralized control system, when the remote tripping signal switch 6 is switched on, the switch tripping coil 8 is electrified, so that the control loop realizes the function of remote tripping of the switch, and when the remote closing signal switch 7 is switched on, the switch closing coil 9 is electrified, so that the control loop realizes the function of remote closing of the switch.
Meanwhile, in order to ensure that operators can stop the motor power supply in time after finding faults in time, accident tripping buttons 5 are arranged on the periphery of the motor power supply, and when the accident tripping buttons 5 are connected, the control loop of the motor power supply can realize an accident tripping function.
As can be seen from fig. 1, if any device in the DCS control card, the local trip button 3 or the accident trip button 5 or the remote trip signal switch 6 fails, the switch of the motor power supply will trip without instruction, i.e. the switch will trip abnormally in the case of non-manual active operation, for example, the DCS control card automatically sends a trip instruction due to failure, the local trip button 3 or the accident trip button 5 or the remote trip signal switch 6 will cause a short circuit by pressing point due to internal damp, and the operator needs to perform comprehensive inspection on all branches which may cause tripping, which increases the difficulty of fault handling and the time of fault handling, and severely restricts the operation efficiency of the motor power supply.
The trip monitoring circuit and the system thereof according to the embodiments of the present application are described below with reference to the accompanying drawings.
Fig. 2 is a schematic diagram of a trip monitoring circuit provided in an embodiment of the present application. As shown in fig. 2, the trip monitoring circuit includes:
and the control module is used for controlling the motor power supplies with a plurality of different voltage levels to be started or shut down. It should be noted that, this motor power includes: 6kV motor power, 380V motor power, 110V motor power, 220V motor power or motor power of other voltage classes. The motor power supply includes: alternating current motors, direct current motors, wherein the 6kV motor power supply and the 380V motor power supply typically comprise alternating current motor power supplies; 110V motor power and 220V motor power typically include dc motor power. The specific motor power supply should be set according to the actual use situation, and will not be described here in detail.
Optionally, the control module includes: a power switch 11, a change-over switch 12, a trip button 13, a switch-on button 14, an accident trip button 15, a remote trip signal switch 16, a remote switch-on signal switch 17, a switch trip coil 18 and a switch-on coil 19, wherein:
the first end of the power switch 11 is connected with the first end of the motor power supply; the first end of the change-over switch 12 is connected with the second end of the power switch 11; a first end of the in-situ trip button 13 is connected to a second end of the diverter switch 12; the first end of the on-site switch-on button 14 is connected with the second end of the switch 12 and the third end of the switch 12; a first end of the accident trip button 15 is connected with a second end of the power switch 11; a first end of the first monitoring module 10 is connected to a second end of the accident trip button 15; a first end of the second monitoring module 20 is connected to a second end of the in-situ trip button 13; the first end of the remote tripping signal switch 16 and the first end of the remote closing signal switch 17 are connected with the third end of the change-over switch 12; a first end of a third monitoring module 30 is connected to a second end of the remote trip signal switch 16; the first end of the switch tripping coil 18 is connected with the second end of the first monitoring module 10, the second end of the second monitoring module 20 and the second end of the third monitoring module 30, and the second end of the switch tripping coil 18 is connected with the second end of the motor power supply; the first end of the switch closing coil 19 is connected with the second end of the on-site closing button 14 and the second end of the remote closing signal switch 17, and the second end of the switch closing coil 19 is connected with the second end of the motor power supply.
The function of the control module is substantially the same as that of the control loop of the motor power supply provided in the above example, and will not be described in detail herein.
The first monitoring module 10, the first monitoring module 10 is connected with the accident tripping branch circuit in the control module, and monitors the accident tripping branch circuit in real time, wherein the accident tripping branch circuit comprises: the first end of the motor power supply, the accident tripping button 15, the switch tripping coil 18 and the second end of the motor power supply are connected to the accident tripping branch, if the accident tripping branch is connected (the corresponding button and the switch are both connected), the first monitoring module 10 monitors the abnormal information of the accident tripping branch once (the tripping action of the accident tripping button 15), and then the corresponding abnormal information signal can be transmitted to the centralized control center through the standby secondary cable in the switch cabinet in the box-type transformer substation, and an operator can position the abnormality of the accident tripping branch by checking the abnormal information collected by the first monitoring module 10, so that the efficiency of eliminating equipment faults is improved.
And a second monitoring module 20, wherein the second monitoring module 20 is connected with the on-site tripping branch circuit in the control module, and monitors the on-site tripping branch circuit in real time, and the on-site tripping branch circuit comprises: the first end of the motor power supply, the on-site trip button 13, the switch trip coil 18 and the second end of the motor power supply are connected to the on-site trip branch, if the on-site trip branch is connected (the corresponding button and switch are both connected), the second monitoring module 20 monitors the abnormal information of the on-site trip branch once (the trip action of the on-site trip button 13), and then the corresponding abnormal information signal can be transmitted to the centralized control center through the standby secondary cable in the switch cabinet in the box-type transformer substation, and an operator can position the abnormal condition of the on-site trip branch by checking the abnormal information collected by the second monitoring module 20, so that the efficiency of eliminating equipment faults is improved.
The third monitoring module 30, the third monitoring module 30 is connected with the remote tripping branch in the control module, and monitors the remote tripping branch in real time, wherein the remote tripping branch comprises: the first end of the motor power supply, the remote tripping signal switch 16, the switching tripping coil 18 and the second end of the motor power supply are connected to the local tripping branch, if the remote tripping branch is connected (the corresponding button and the switch are both connected), the third monitoring module 30 monitors the abnormal information of the remote tripping branch once (the tripping action of the remote tripping signal switch 16 is detected), and then the corresponding abnormal information signal can be transmitted to the centralized control center through the standby secondary cable in the switch cabinet in the box-type transformer substation, and an operator can locate the abnormality of the remote tripping branch by checking the abnormal information collected by the third monitoring module 30, so that the efficiency of eliminating equipment faults is improved.
Optionally, the first monitoring module 10, the second monitoring module 20 and the third monitoring module 30 each include: electromechanical relays and solid state relays.
A relay (english name) is an electric control device, and is an electric appliance that causes a predetermined step change in a controlled variable in an electric output circuit when a change in an input variable (excitation variable) reaches a predetermined requirement. It has an interactive relationship between the control system (also called input loop) and the controlled system (also called output loop). It is commonly used in automated control circuits and is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, the circuit plays roles of automatic regulation, safety protection, circuit switching and the like. The relay is widely applied to remote control, remote measurement, communication, automatic control, electromechanical integration and power electronic equipment, and is one of the most important control elements. The relay generally has an induction mechanism (input part) capable of reflecting certain input variables (such as current, voltage, power, impedance, frequency, temperature, pressure, speed, light and the like); an actuating mechanism (output part) which can realize on and off control on a controlled circuit is provided; between the input part and the output part of the relay, there is also an intermediate mechanism (driving part) for coupling and isolating the input quantity, for functional processing and for driving the output part.
Further, the electromechanical relay has electromechanical properties, and noise is mainly derived from physical characteristics of the electromechanical relay: the fast moving metal contacts are attracted/released by electromagnetic attraction. The amount of mechanical movement can be considered as a point of failure, in practice, but fatigue is mainly at the surface of the contacts, since the passing high voltage may create an arc when they approach, resulting in breakdown of the air gap before full contact. The same phenomenon occurs when the contacts are forcibly opened. It is understood here that an alternating or direct voltage may appear at the contacts during actuation. At this time, if a zero-voltage switch (in the case of an alternating voltage) is not provided, an arc may be generated each time the relay is activated. Eventually, the contacts quickly degrade and even fuse together. Even in less extreme cases, the resistance between contacts may increase over time and use, resulting in its behavior becoming unpredictable.
Wear and fatigue from use eventually lead to failure. This is why manufacturers set the lifetime for these devices. Also, electromechanical relays can withstand contact shock and low voltage switching. However, when the high-voltage switch is faced, it is difficult to prevent vibration.
Solid state relays, also known as solid state switches, are implemented by transistors, or by using semiconductor substrates. Super junction MOSFET processes are typically employed, which have a structure with multiple vertical p-n junctions, beyond planar fabrication processes (based on a single p-n junction). Finally, the on-resistance is shared on a plurality of parallel paths, and the total on-resistance is reduced. The solid state relay thus starts to conduct when the voltage is at its lowest (or the current may be out of phase with the voltage), i.e. the solid state relay will perform zero voltage switching, i.e. use direct voltage and current, and the conduction time can be controlled relatively easily by means of the solid state switch. The aim is to avoid surge currents that may cause other system problems, which eventually makes the relay or circuit breaker more reliable throughout its lifetime.
The most commonly mentioned parameter in terms of performance is the power loss caused by the resistance of the conductive path, which is lower for electromechanical relays, but which increases over time. With solid state relays, the power loss is directly related to the on-resistance (which depends on the type of semiconductor used and the size of the power transistor channel), which typically does not change over the lifetime of the device.
Further, the first monitoring module 10, the second monitoring module 20 and the third monitoring module 30 include, but are not limited to, electromechanical relays, solid state relays, thyristors, electronic bidirectional switch chips, integrated switch circuits, etc., and the first monitoring module 10, the second monitoring module 20 and the third monitoring module 30 should be set according to actual usage scenarios, which will not be described herein.
Further, the electromechanical relay includes a current-type relay, and the action current of the accident trip branch, the action current of the local trip branch and the action current of the remote trip branch are all greater than the action current of the electromechanical relay. The rated voltage of the electromechanical relay is equal to the bus voltage of a tripping monitoring loop (comprising an accident tripping branch, a local tripping branch and a remote tripping branch); the rated voltage of the solid state switch is equal to the bus voltage of the trip monitoring loop, and the specific principle is not described in detail herein.
Optionally, the first monitoring module 10, the second monitoring module 20 and the third monitoring module 30 are connected to the control module by means of a card-type connection or a hinge connection. It should be noted that, the card type connection is also called as bayonet connection, is a reliable and rapid connection and separation mode, is a combined structure, has a male head and a female head, is generally provided with a locking and misplug preventing structure, is suitable for a larger current environment, and has higher connection reliability. The hinge connection means that different structures can rotate relatively, and can adapt to severe vibration environments.
Further, the connection modes of the first monitoring module 10, the second monitoring module 20 and the third monitoring module 30 include, but are not limited to, a card connection and a hinge connection, and also include a screw connection, a cabinet connection, etc., so long as the first monitoring module 10 can ensure that the accident trip branch is monitored in real time, the second monitoring module 20 monitors the in-situ trip branch in real time, and the third monitoring module 30 monitors the remote trip branch in real time, the connection modes of any of the first monitoring module 10, the second monitoring module 20 and the third monitoring module 30 are not limited to this embodiment.
The utility model also provides a tripping monitoring system, including the tripping monitoring circuit that this application embodiment provided for carry out real-time supervision to accident tripping branch road, local tripping branch road and distant place tripping branch road in the system, so that the operating personnel very first time location to the fault location, ensure that the motor power of different voltage grades can normal operating.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A trip monitoring circuit, comprising:
the control module is used for controlling the motor power supplies with a plurality of different voltage levels to be started or shut down;
the first monitoring module (10) is connected with the accident tripping branch in the control module, and is used for monitoring the accident tripping branch in real time;
the second monitoring module (20) is connected with the on-site tripping branch circuit in the control module, and is used for monitoring the on-site tripping branch circuit in real time;
and the third monitoring module (30) is connected with the remote tripping branch in the control module, and is used for monitoring the remote tripping branch in real time.
2. The trip monitoring circuit of claim 1, wherein said first monitoring module (10) comprises: electromechanical relays and solid state relays.
3. The trip monitoring circuit of claim 1, wherein said second monitoring module (20) comprises: electromechanical relays and solid state relays.
4. The trip monitoring circuit of claim 1, wherein said third monitoring module (30) comprises: electromechanical relays and solid state relays.
5. The trip monitoring circuit of claim 2, 3 or 4, wherein the electromechanical relay comprises a current-type relay, and wherein the action current of the accident trip branch, the action current of the local trip branch, and the action current of the remote trip branch are each greater than the action current of the electromechanical relay.
6. The trip monitoring circuit of claim 2 or 3 or 4, wherein the rated voltage of the electromechanical relay and the bus voltage of the trip monitoring circuit are equal; the rated voltage of the solid state switch is equal to the bus voltage of the trip monitoring loop.
7. The trip monitoring circuit of claim 1, characterized in that the first monitoring module (10), the second monitoring module (20) and the third monitoring module (30) are connected to the control module by means of a card connection or a hinge connection.
8. The trip monitoring circuit of claim 1, wherein the control module comprises: a power switch (11), a change-over switch (12), a local trip button (13), a local switch-on button (14), an accident trip button (15), a remote trip signal switch (16), a remote switch-on signal switch (17), a switch trip coil (18) and a switch-on coil (19), wherein:
the first end of the power switch (11) is connected with the first end of the motor power supply; the first end of the change-over switch (12) is connected with the second end of the power switch (11); a first end of the on-site trip button (13) is connected with a second end of the change-over switch (12); the first end of the on-site closing button (14) is connected with the second end of the change-over switch (12) and the third end of the change-over switch (12); the first end of the accident tripping button (15) is connected with the second end of the power switch (11); a first end of the first monitoring module (10) is connected with a second end of the accident trip button (15); a first end of the second monitoring module (20) is connected with a second end of the on-site trip button (13); the first end of the remote tripping signal switch (16) and the first end of the remote closing signal switch (17) are connected with the third end of the change-over switch (12); a first end of the third monitoring module (30) is connected with a second end of the remote trip signal switch (16); the first end of the switch tripping coil (18) is connected with the second end of the first monitoring module (10), the second end of the second monitoring module (20) and the second end of the third monitoring module (30), and the second end of the switch tripping coil (18) is connected with the second end of the motor power supply; the first end of the switch closing coil (19) is connected with the second end of the on-site closing button (14) and the second end of the remote closing signal switch (17), and the second end of the switch closing coil (19) is connected with the second end of the motor power supply.
9. The trip monitoring circuit of claim 8, wherein the motor power supply comprises: ac motor, dc motor.
10. A trip monitoring system, comprising: the trip monitoring circuit of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311346905.XA CN117517942A (en) | 2023-10-17 | 2023-10-17 | Tripping monitoring loop and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311346905.XA CN117517942A (en) | 2023-10-17 | 2023-10-17 | Tripping monitoring loop and system |
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| CN117517942A true CN117517942A (en) | 2024-02-06 |
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| CN202311346905.XA Pending CN117517942A (en) | 2023-10-17 | 2023-10-17 | Tripping monitoring loop and system |
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