CN112635213B - Circuit breaker and opening and closing control method and device thereof - Google Patents
Circuit breaker and opening and closing control method and device thereof Download PDFInfo
- Publication number
- CN112635213B CN112635213B CN202011368286.0A CN202011368286A CN112635213B CN 112635213 B CN112635213 B CN 112635213B CN 202011368286 A CN202011368286 A CN 202011368286A CN 112635213 B CN112635213 B CN 112635213B
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- opening
- current
- closing
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Keying Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a circuit breaker and a control method and a control device for opening and closing the circuit breaker, wherein the control method for opening and closing the circuit breaker comprises the following steps: when an opening and closing action instruction of the circuit breaker is received, acquiring the travel time of the last opening and closing action of the circuit breaker, wherein the opening and closing action instruction comprises an opening instruction or a closing instruction; estimating the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker; the method comprises the steps of obtaining the zero point moment of the current nearest access power supply, determining the opening and closing starting moment according to the zero point moment of the current nearest access power supply and the current opening and closing action time of the circuit breaker, and performing opening and closing action at the opening and closing starting moment so as to enable the circuit breaker to complete the opening and closing action at the zero point moment of the access power supply. Therefore, the safety of the circuit breaker during opening and closing actions is improved.
Description
Technical Field
The invention relates to the technical field of circuit breaker control, in particular to a circuit breaker and a control method and a control device for opening and closing of the circuit breaker.
Background
At present, in the switching-on and switching-off process of an alternating current circuit breaker, because the switching-on time and the switching-off time are random, alternating current voltage is sine wave, and the possible switching-on time is just near the voltage peak value. At the moment, spark or peak current can be generated when the breaker is switched on, contact abrasion is generated, in addition, when the breaker is switched off under load, the switching-off time is just near the current peak value because the alternating current is sine wave, the switching-off can generate larger electric arc, the contact can be ablated, and the service life of the arc extinguishing element can also be influenced by the generated electric arc.
Disclosure of Invention
The invention mainly aims to provide a circuit breaker, and a method and a device for controlling opening and closing of the circuit breaker, and aims to improve the safety of the circuit breaker during opening and closing actions.
In order to achieve the purpose, the invention provides a circuit breaker opening and closing control method, which comprises the following steps:
when an opening and closing action instruction of the circuit breaker is received, acquiring the travel time of the last opening and closing action of the circuit breaker, wherein the opening and closing action instruction comprises an opening instruction or a closing instruction;
estimating the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker;
the method comprises the steps of obtaining the zero point moment of the current nearest access power supply, determining the opening and closing starting moment according to the zero point moment of the current nearest access power supply and the current opening and closing action time of the circuit breaker, and performing opening and closing action at the opening and closing starting moment so as to enable the circuit breaker to complete the opening and closing action at the zero point moment of the access power supply.
Optionally, when the opening and closing action command is a closing command, the current opening and closing action time of the circuit breaker is the current closing action time; the method comprises the following steps of obtaining a zero point moment of a current nearest access power supply, determining a switching-on and switching-off starting moment according to the zero point moment of the current nearest access power supply and the current switching-on and switching-off action time of the circuit breaker, and performing switching-on and switching-off actions at the switching-on and switching-off starting moment so that the circuit breaker completes the switching-on and switching-off actions at the zero point moment of the access power supply, wherein the switching-on and switching-off actions include:
the method comprises the steps of obtaining the voltage zero point moment of the current nearest access power supply, determining the switching-on starting moment according to the voltage zero point moment of the access power supply and the current switching-on action time of the circuit breaker, and carrying out switching-on action at the switching-on starting moment so as to enable the circuit breaker to complete the switching-on action at the voltage zero point moment of the access power supply.
Optionally, the determining, according to the voltage zero point time of the power supply and the current closing action time of the circuit breaker, a closing start time specifically includes:
and (3) adding the time between the current closing action time and the two nearest voltage zero-point moments, and subtracting the added result from the time between the two nearest voltage zero-point moments to obtain the time between the current nearest zero-point moment of the accessed power supply and the closing starting moment.
Optionally, the circuit breaker further comprises a driving assembly and a current pulse detection device, wherein the driving assembly is used for driving the circuit breaker to perform an opening and closing action; the current pulse detection device is used for detecting the number of current pulses and the interval time of each current pulse when the driving assembly operates;
the method comprises the following steps of obtaining the stroke time of the last opening and closing action of the circuit breaker:
acquiring the number of current pulses for controlling the switching-on action of the driving assembly at the last time and the interval time of each current pulse;
and determining the travel time of the last closing action according to the number of current pulses in the last closing action control process of the driving assembly and the interval time of each current pulse.
Optionally, the step of predicting the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker comprises:
controlling a driving assembly to operate a preset number of current pulses, and acquiring the current operating speed of the driving assembly;
and estimating the current closing action time of the circuit breaker according to the current running speed of the driving assembly and the current pulse quantity of the last driving assembly controlling the closing action.
Optionally, the circuit breaker further comprises a current detection device, wherein the current detection device is used for detecting a current value when the driving assembly operates; the step of estimating the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker further comprises the following steps:
acquiring a current value of the driving assembly during operation, which is detected by a current detection device;
and estimating the closing action time of the circuit breaker at this time according to the current value of the driving assembly during operation.
Optionally, when the opening and closing action command is a switching-off command, the current opening and closing action time of the circuit breaker is the current switching-off action time, and the switching-off action time of the circuit breaker is preset to be a zero value;
the method comprises the following steps of obtaining a zero point moment of a current nearest access power supply, determining a switching-on and switching-off starting moment according to the zero point moment of the access power supply and the current switching-on and switching-off action time of the circuit breaker, and performing switching-on and switching-off actions at the switching-on and switching-off starting moment so that the circuit breaker completes the switching-on and switching-off actions at the zero point moment of the access power supply, wherein the switching-on and switching-off actions comprise:
the method comprises the steps of obtaining the current zero point moment of the current nearest access power supply, determining the opening starting moment according to the current zero point moment of the access power supply and the current opening action time of the circuit breaker, and performing opening action at the opening starting moment so as to enable the circuit breaker to complete opening action at the current zero point moment of the access power supply.
A control apparatus of a circuit breaker, comprising:
a memory;
a processor; and
and the circuit breaker opening and closing control program is stored in the memory and executed by the processor, and when the circuit breaker opening and closing control program is executed by the processor, the circuit breaker opening and closing control method is realized.
The circuit breaker also comprises a zero-crossing detection device for detecting the zero-point moment when the circuit breaker is connected into a power supply; and a control device for a circuit breaker as described above;
alternatively, the circuit breaker employs any of the above-described circuit breaker opening/closing control methods.
According to the technical scheme, after the opening and closing action instruction of the circuit breaker is received, the current opening and closing action time of the circuit breaker is estimated by acquiring the travel time of the last opening and closing action of the circuit breaker and then the travel time of the last opening and closing action of the circuit breaker. And when the zero point moment of the current nearest access power supply is acquired, the opening and closing starting moment is determined according to the zero point moment of the current nearest access power supply and the current opening and closing action time of the circuit breaker, and the opening and closing action is carried out at the opening and closing starting moment, so that the opening and closing action of the circuit breaker is completed at the zero point moment of the access power supply, and the safety of the circuit breaker in the opening and closing action is improved.
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 structures shown in the drawings without creative efforts.
Fig. 1 is a schematic flow chart of an embodiment of a circuit breaker opening and closing control method of the invention;
FIG. 2 is a detailed flowchart of S10 in FIG. 1;
FIG. 3 is a detailed flowchart of S30 in FIG. 2;
FIG. 4 is a schematic view of another detailed flow chart of S30 in FIG. 1;
fig. 5 is a schematic diagram of functional modules of an embodiment of the circuit breaker of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a circuit breaker opening and closing control method.
Referring to fig. 1, in an embodiment of the present invention, a method for controlling opening and closing of a circuit breaker includes the following steps:
and step S10, when the opening and closing action command of the circuit breaker is received, acquiring the travel time of the last opening and closing action of the circuit breaker, wherein the opening and closing action command comprises an opening command or a closing command.
The switching-on and switching-off action instruction comprises a switching-off action instruction or a switching-on action instruction, and the instructions can be sent by a cloud end, an upper computer and the like or provided by load equipment connected with the circuit breaker. In an embodiment, the circuit breaker may be provided with a communication module, configured to receive an opening/closing instruction sent from a cloud or an upper computer and transmit the opening/closing instruction to the processor, and when receiving an opening/closing operation instruction, the circuit breaker starts to prepare for an opening/closing operation. However, there is a certain travel time from the beginning to the end of the opening and closing operation, and in the specific process, due to the influence of external environmental factors such as working temperature and mechanical resistance, the opening and closing time of the circuit breaker is not always the same each time, so that the accurate control cannot be performed, and the opening and closing operation cannot be completed at the zero point. Therefore, in the embodiment, the next time is estimated by referring to the travel time of the last opening and closing action, and the time interval between the last opening and closing action and the opening and closing action of this time is the closest, so that the external environment state is not changed greatly, and the accuracy of the action time of this time is improved more favorably. Meanwhile, the communication module arranged through the circuit breaker can realize long-distance control, and can realize simultaneous control of a plurality of circuit breakers, so that the working efficiency of the circuit breaker is improved.
Alternatively, the communication module may be a gateway, a heartbeat packet, etc., and is not limited herein.
S20, predicting the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker;
if the opening and closing action of the circuit breaker is the first opening and closing action of the circuit breaker, the opening and closing action of the circuit breaker is set according to preset opening and closing action time of the circuit breaker, and the preset time is obtained through multiple tests according to a preset stroke and the preset opening and closing action speed of the circuit breaker set according to requirements. The preset stroke may be measured by a position detection sensor or a micro switch or the like. This divide-shut brake action time of circuit breaker can receive external environment factor's such as operating temperature, mechanical resistance influence, and the action speed that concrete presentation is at actual circuit breaker divide-shut brake can have certain difference with the speed of predetermineeing, and is different at every turn when circuit breaker divide-shut brake action speed to lead to the circuit breaker can't accomplish the branch combined floodgate at zero point moment. The circuit breaker can estimate the action time of the circuit breaker on/off at this time by detecting mechanical resistance and working temperature or detecting the action speed of the circuit breaker on/off at this time and combining the travel time of the last switching on/off action, thereby improving the safety of the circuit breaker on/off.
And S30, acquiring the zero point time of the current nearest access power supply, determining the opening and closing starting time according to the zero point time of the current nearest access power supply and the current opening and closing action time of the circuit breaker, and performing the opening and closing action at the opening and closing starting time so that the circuit breaker completes the opening and closing action at the zero point time of the access power supply.
The circuit breaker can detect the nearest working voltage zero point moment and the nearest working current zero point moment by arranging the voltage detection device or the current detection device, and the starting moment of the opening and closing action of the circuit breaker is determined according to the action time of the opening and closing action because the circuit breaker needs certain action time for opening and closing, so that the circuit breaker is just at the working current zero point moment at the moment of completing the opening action, and similarly, the circuit breaker is just at the working voltage zero point moment at the moment of completing the closing action. Therefore, the safety and stability of the opening and closing of the circuit breaker are further improved.
Alternatively, the voltage detection device may be a voltage-dividing resistor or an operational amplifier, and in practical applications, the voltage detection device may be selected according to requirements, and is not limited herein.
Optionally, the current detection device may be a transformer, a conditioning circuit, or a current detection chip, and in practical application, the current detection device may be selected according to a requirement, which is not limited herein.
According to the technical scheme, after the opening and closing action instruction of the circuit breaker is received, the current opening and closing action time of the circuit breaker is estimated by acquiring the travel time of the last opening and closing action of the circuit breaker and then the travel time of the last opening and closing action of the circuit breaker. And when the zero point moment of the current nearest access power supply is acquired, the opening and closing starting moment is determined according to the zero point moment of the current nearest access power supply and the current opening and closing action time of the circuit breaker, and the opening and closing action is carried out at the opening and closing starting moment, so that the opening and closing action of the circuit breaker is completed at the zero point moment of the access power supply, and the safety of the circuit breaker in the opening and closing action is improved.
Referring to fig. 1, in an embodiment of the present invention, when the switching-on/off operation command is a closing command, the current switching-on/off operation time of the circuit breaker is the current closing operation time. The step S20 of obtaining the zero point time of the nearest current access power supply, determining the opening and closing starting time according to the zero point time of the nearest current access power supply and the current opening and closing action time of the circuit breaker, and performing the opening and closing action at the opening and closing starting time, so that the circuit breaker completes the opening and closing action at the zero point time of the current access power supply includes:
and acquiring the voltage zero point moment of the current nearest access power supply, determining the switching-on starting moment according to the voltage zero point moment of the access power supply and the current switching-on action time of the circuit breaker, and performing switching-on action at the switching-on starting moment so as to enable the circuit breaker to complete the switching-on action at the voltage zero point moment of the access power supply.
In an embodiment of the present invention, determining the closing start time according to the voltage zero time of the power supply and the closing action time of the circuit breaker at this time specifically includes:
and (3) adding the time between the closing action time and the two nearest voltage zero-point moments, and subtracting the added result from the time between the two nearest voltage zero-point moments to obtain the time between the zero-point moment nearest to the current power supply and the closing starting moment.
After the closing instruction is obtained, since the closing action time is generally longer than the time interval between the zero points of the operating voltage, the specific starting time needs to be according to the formula:
a calculation is made where ts is the delay time (ms), f1 is the frequency (hz) of the operating voltage known to be switched into the power supply,
and when the latest voltage zero point moment of the access power supply is acquired, the moment after the delay time is taken as the starting moment, and the starting operation at the moment can enable the contact to be just closed at the working voltage zero point. Through the steps, the starting time of closing is accurate, and the closing can be accurately operatedThe voltage zero point is completed, and the working stability is improved.
Referring to fig. 2, in an embodiment of the present invention, the circuit breaker includes a driving assembly 30 and a current pulse detection device 40, and the step S10 of obtaining the stroke time of the last opening and closing action of the circuit breaker specifically includes:
and S11, acquiring the current pulse number of the last closing control action of the driving assembly and the interval time of each current pulse.
The driving assembly 30 is a dc brush motor, and is used for driving the circuit breaker to perform opening and closing actions. The current pulse detecting means 40 is used for detecting the number of current pulses and the interval time of each current pulse when the driving assembly is operated. The current pulse of the direct current brush motor represents that the direct current motor is subjected to phase change, and when the number of winding phases is fixed and the reduction ratio is fixed, the two pulses move by the same distance. By adopting the direct current motor to drive the opening and closing movement of the circuit breaker, the action time of the opening and closing can be accurately detected, the direct current motor works more stably, and the stability of the opening and closing of the circuit breaker is improved.
And S12, determining the travel time of the previous closing action according to the current pulse number and the interval time of each current pulse in the last closing action control process of the driving assembly.
The interval time of each current pulse is the same, so the stroke time of the last closing action can be obtained through the number of the current pulses and the interval between every two pulses.
Optionally, the driving component may be a servo motor, an ac motor, or the like, besides the dc brush motor, and in practical application, the driving component may be selected according to requirements, and is not limited herein.
Optionally, the current pulse detection device is a current pulse detection circuit in this embodiment, and in addition, a servo driver, an encoder, and the like may be selected according to a requirement in an actual application, which is not limited herein.
Referring to fig. 3, in an embodiment of the present invention, the step S30 of estimating the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker:
and S31, controlling the driving assembly to operate a preset number of current pulses, and acquiring the current operation speed of the driving assembly.
And S32, estimating the current closing action time of the circuit breaker according to the current running speed of the driving assembly and the current pulse number of the last closing action controlled by the driving assembly.
When a closing instruction is received, the direct current motor firstly runs a preset number of current pulses so as to obtain the running speed of the time, and then the action time of the subsequent distance of the action of the time is judged according to the previous travel time. For example, the last travel time is 10S and the distance of 10 pulses is passed, that is, the last operation speed is 1S and the distance of one pulse is passed, when the closing instruction is obtained this time, the direct current motor starts to operate for 2 pulses, and 3S is spent, that is, the operation speed of the direct current motor is 1.5S and one pulse this time, then the distance of 8 pulses remains, the remaining time of this time still needs 12S, so the closing operation time of the circuit breaker this time is 12S. By detecting the running speed, the influence of the working environment on the closing action time can be visually reflected, a device for detecting environmental factors is omitted, and the next action time is estimated by adopting the previous travel time, so that the operation is more accurate.
Referring to fig. 4, in an embodiment of the present invention, the circuit breaker further includes a current detection device 50, and the step S30 of predicting the current switching-on/off operation time of the circuit breaker according to the travel time of the last switching-on/off operation of the circuit breaker further includes:
and S33, acquiring the current value of the driving assembly during operation, which is detected by the current detection device.
And S34, estimating the closing action time of the circuit breaker according to the current value of the driving assembly during operation.
The current detection device 50 is used for detecting the current value when the driving assembly operates, after the contact is opened and closed for multiple times, the contact is abraded to a certain extent, the stroke is increased, the resistance of the direct current motor is increased, the pulse number of closing is increased, when the current suddenly changes, the subsequent pulse number can be recorded, and the subsequent pulse number is added into the pulse number required by the closing at this time. Through current detection, the excessive stroke can be recorded and the action time of the current closing can be calibrated under the condition that the contact is abraded.
Referring to fig. 1, in an embodiment of the present invention, when the switching-on/off operation command is the switching-off command, the current switching-on/off operation time of the circuit breaker is the current switching-off operation time, and the switching-off operation time of the circuit breaker is preset to a zero value.
The method comprises the following steps of obtaining the zero time from the current nearest access power supply, determining the opening and closing starting time according to the zero time of the access power supply and the current opening and closing action time of the circuit breaker, and performing the opening and closing action at the opening and closing starting time so as to enable the circuit breaker to complete the opening and closing action at the zero time of the access power supply, wherein the step of:
and obtaining the current zero moment of the current nearest accessed power supply, determining the opening starting moment according to the current zero moment of the accessed power supply and the current opening action time of the breaker, and performing opening action at the opening starting moment so as to enable the breaker to complete the opening action at the current zero moment of the accessed power supply.
The breaker adopts a contact connection mode, so that the action time required by the separation of the contacts during the opening is zero, and the current zero point moment from the current nearest power supply is the starting moment of the opening action when the breaker receives the opening instruction.
Further, referring to fig. 5, in an embodiment of the present invention, a control apparatus of a circuit breaker includes:
a memory 10;
a processor 20; and
and a circuit breaker opening/closing control program stored in the memory 10 and executed by the processor 20, wherein the circuit breaker opening/closing control program, when executed by the processor 20, implements the circuit breaker opening/closing control method according to any one of the above-described embodiments.
Therefore, the embodiment of the control device of the circuit breaker comprises all technical schemes of all embodiments of the circuit breaker opening and closing control method, and the achieved technical effects are completely the same, and are not repeated herein.
In addition, referring to fig. 5, in an embodiment of the present invention, the circuit breaker further includes a zero-crossing detection device for detecting a zero-point time when the circuit breaker is connected to the power supply; the circuit breaker is controlled by the circuit breaker control device, or the circuit breaker is controlled by the circuit breaker opening and closing control method.
The zero-cross detection device includes a current zero-point detection device 60 for detecting an operating current flowing through the circuit breaker, and a voltage zero-point detection device 70 for detecting an operating voltage input into the circuit breaker. The driving assembly 30, the current pulse detecting device 40, the current detecting device 50, the current zero point detecting device 60, and the voltage zero point detecting device 70 are electrically connected to the processor 20.
Therefore, the embodiment of the circuit breaker provided by the invention comprises the circuit breaker opening and closing control method or the circuit breaker control device, and the achieved technical effects are completely the same, and are not repeated herein.
Claims (7)
1. The method for controlling the opening and closing of the circuit breaker is characterized by comprising the following steps of:
when an opening and closing action instruction of the circuit breaker is received, acquiring the travel time of the last opening and closing action of the circuit breaker, wherein the opening and closing action instruction comprises an opening instruction or a closing instruction;
estimating the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker;
acquiring the zero point moment of the current nearest access power supply, determining the opening and closing starting moment according to the zero point moment of the current nearest access power supply and the current opening and closing action time of the circuit breaker, and performing opening and closing action at the opening and closing starting moment so as to enable the circuit breaker to complete the opening and closing action at the zero point moment of the access power supply;
when the opening and closing action command is a closing command, the current opening and closing action time of the circuit breaker is the current closing action time; the method comprises the following steps of obtaining a zero point moment of a current nearest access power supply, determining a switching-on and switching-off starting moment according to the zero point moment of the current nearest access power supply and the current switching-on and switching-off action time of the circuit breaker, and performing switching-on and switching-off actions at the switching-on and switching-off starting moment so that the circuit breaker completes the switching-on and switching-off actions at the zero point moment of the access power supply, wherein the switching-on and switching-off actions include:
acquiring a voltage zero point moment closest to a current accessed power supply, determining a closing starting moment according to the voltage zero point moment of the accessed power supply and the closing action time of the circuit breaker, and performing closing action at the closing starting moment so that the circuit breaker completes the closing action at the voltage zero point moment of the accessed power supply;
the circuit breaker also comprises a driving assembly and a current pulse detection device, wherein the driving assembly is used for driving the circuit breaker to perform opening and closing actions; the current pulse detection device is used for detecting the number of current pulses and the interval time of each current pulse when the driving assembly operates;
the method comprises the following steps of obtaining the stroke time of the last opening and closing action of the circuit breaker:
acquiring the number of current pulses for controlling the switching-on action of the driving assembly at the last time and the interval time of each current pulse;
and determining the travel time of the last closing action according to the number of current pulses in the last closing action control process of the driving assembly and the interval time of each current pulse.
2. The circuit breaker opening and closing control method according to claim 1, wherein the determining of the closing start time according to the voltage zero point time of the power supply and the current closing action time of the circuit breaker specifically includes:
and (3) adding the time between the current closing action time and the two nearest voltage zero-point moments, and subtracting the added result from the time between the two nearest voltage zero-point moments to obtain the time between the current nearest zero-point moment of the accessed power supply and the closing starting moment.
3. The circuit breaker opening and closing control method according to claim 1, wherein the step of predicting the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker comprises the following steps:
controlling a driving assembly to operate a preset number of current pulses, and acquiring the current operating speed of the driving assembly;
and estimating the current closing action time of the circuit breaker according to the current running speed of the driving assembly and the current pulse quantity of the last driving assembly controlling the closing action.
4. The circuit breaker opening and closing control method according to claim 1, wherein the circuit breaker further comprises a current detection device for detecting a current value when the driving assembly operates; the step of estimating the current opening and closing action time of the circuit breaker according to the travel time of the last opening and closing action of the circuit breaker further comprises the following steps:
acquiring a current value of the driving assembly during operation, which is detected by a current detection device;
and estimating the closing action time of the circuit breaker at this time according to the current value of the driving assembly during operation.
5. The circuit breaker opening and closing control method according to any one of claims 1 to 4, wherein when the opening and closing action command is a closing command, the current opening and closing action time of the circuit breaker is the current opening and closing action time, and the opening and closing action time of the circuit breaker is preset to a zero value;
the method comprises the following steps of obtaining a zero point moment of a current nearest access power supply, determining a switching-on and switching-off starting moment according to the zero point moment of the access power supply and the current switching-on and switching-off action time of the circuit breaker, and performing switching-on and switching-off actions at the switching-on and switching-off starting moment so that the circuit breaker completes the switching-on and switching-off actions at the zero point moment of the access power supply, wherein the switching-on and switching-off actions comprise:
the method comprises the steps of obtaining the current zero point moment of the current nearest access power supply, determining the opening starting moment according to the current zero point moment of the access power supply and the current opening action time of the circuit breaker, and performing opening action at the opening starting moment so as to enable the circuit breaker to complete opening action at the current zero point moment of the access power supply.
6. A control apparatus of a circuit breaker, characterized in that the control apparatus of the circuit breaker comprises:
a memory;
a processor; and
a circuit breaker opening and closing control program stored in the memory and executed by the processor, wherein the circuit breaker opening and closing control program realizes the circuit breaker opening and closing control method according to any one of claims 1 to 5 when executed by the processor.
7. The circuit breaker is characterized by further comprising a zero-crossing detection device for detecting the zero-point moment when the circuit breaker is connected into a power supply; and a control device of the circuit breaker as claimed in claim 6;
alternatively, the circuit breaker uses the circuit breaker opening/closing control method according to any one of claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011368286.0A CN112635213B (en) | 2020-11-27 | 2020-11-27 | Circuit breaker and opening and closing control method and device thereof |
| PCT/CN2021/073372 WO2022110531A1 (en) | 2020-11-27 | 2021-01-22 | Circuit breaker, open/close control method therefor, and control apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011368286.0A CN112635213B (en) | 2020-11-27 | 2020-11-27 | Circuit breaker and opening and closing control method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112635213A CN112635213A (en) | 2021-04-09 |
| CN112635213B true CN112635213B (en) | 2022-02-11 |
Family
ID=75306642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011368286.0A Active CN112635213B (en) | 2020-11-27 | 2020-11-27 | Circuit breaker and opening and closing control method and device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112635213B (en) |
| WO (1) | WO2022110531A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496675B (en) * | 2021-12-21 | 2024-05-14 | 平高集团有限公司 | High-voltage circuit breaker and closing control method thereof |
| CN114551157B (en) * | 2022-03-04 | 2023-07-11 | 阳光电源（上海）有限公司 | Action control method of controllable switch and switching circuit of inverter |
| CN115128442B (en) * | 2022-06-23 | 2024-08-06 | 国网福建省电力有限公司 | Dynamic evaluation method for electric life of circuit breaker based on full life operation information |
| CN115579962B (en) * | 2022-12-07 | 2023-03-10 | 国网新源控股有限公司 | Synchronization grid-connection optimization method and device |
| CN116047285B (en) * | 2023-01-13 | 2023-11-10 | 北京华控智加科技有限公司 | Method and system for detecting opening and closing of outlet circuit breaker |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361184A (en) * | 1992-10-20 | 1994-11-01 | Board Of Regents Of The University Of Washington | Adaptive sequential controller |
| JP4825648B2 (en) * | 2006-11-28 | 2011-11-30 | 三菱電機株式会社 | Switch control device |
| CN102520628B (en) * | 2012-01-10 | 2015-04-29 | 武汉长海电气科技开发有限公司 | Synchronous switch control device |
| US9287695B2 (en) * | 2012-02-15 | 2016-03-15 | Consolidated Edison Company Of New York | Breaker control switch with a time-delay close function to mitigate an aurora event |
| CN105207232A (en) * | 2015-10-14 | 2015-12-30 | 国网江西省电力科学研究院 | Intelligent phase selection control system for 12 kV permanent magnet vacuum circuit breaker |
| CN106451793B (en) * | 2016-11-29 | 2018-10-16 | 国网江苏省电力公司常州供电公司 | Circuit breaker of intelligent transformer substation phase-controlled method based on digital voltage signal |
| CN109036964B (en) * | 2018-08-11 | 2020-05-08 | 深圳市健思研科技有限公司 | Control method for preventing contact adhesion, storage medium, control device and relay |
| CN111740380B (en) * | 2020-07-02 | 2021-05-04 | 鑫美地(成都)科技有限公司 | Breaker opening and closing control method and breaker |
-
2020
- 2020-11-27 CN CN202011368286.0A patent/CN112635213B/en active Active
-
2021
- 2021-01-22 WO PCT/CN2021/073372 patent/WO2022110531A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022110531A1 (en) | 2022-06-02 |
| CN112635213A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112635213B (en) | Circuit breaker and opening and closing control method and device thereof | |
| CN107425762B (en) | A kind of three-phase switch reluctance machine prediction moment controlling system and method | |
| JP3751300B2 (en) | Motor drive device | |
| JP6200461B2 (en) | Motor drive device having dynamic brake circuit | |
| US20130043820A1 (en) | Processing a motor variable of a dc motor and actuating device for a motor vehicle | |
| JP4229520B2 (en) | Motor control method | |
| JP2009060679A (en) | Voltage controller for vehicles | |
| US10663510B2 (en) | Insulation detecting method for electric machine | |
| CN109217739B (en) | Method for detecting load difference | |
| EP3968510A1 (en) | Electric power conversion device, system using same, and diagnostic method for same | |
| KR20000028798A (en) | Commutation method and apparatus for switched reluctance motor | |
| CN111751620A (en) | Self-adaptive detection method for primary circuit of circuit breaker | |
| JP2021035232A (en) | Power conversion device | |
| CN110868114A (en) | Counter potential zero-crossing detection method, device and control system for dust collector and motor | |
| KR20180129148A (en) | System and method for controlling motor and | |
| CN109839593A (en) | Motor drive and measuring method | |
| JP2007292761A (en) | Tracing method of resistivity short circuit spot, and system, module, and recording medium suitable for method | |
| JP2014193060A (en) | Power supply unit | |
| JP2007166892A (en) | Method and device for deciding rotational speed of electric machine | |
| CN102012454A (en) | Zero passage detection method and device of counter electromotive force of permanent magnet direct current brushless Hall motor | |
| EP3745149B1 (en) | Power conversion device, rotating machine system using same, and diagnosis method for same | |
| CN109347374B (en) | Novel brushless direct current motor sensorless control system and method | |
| KR101056572B1 (en) | Method and apparatus for determining torque of electrical equipment | |
| CN105322863A (en) | Motor drive device | |
| JP6603295B2 (en) | Motor driving device and measuring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |