WO2022110531A1 - 断路器及其分合闸的控制方法和控制装置 - Google Patents
断路器及其分合闸的控制方法和控制装置 Download PDFInfo
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- WO2022110531A1 WO2022110531A1 PCT/CN2021/073372 CN2021073372W WO2022110531A1 WO 2022110531 A1 WO2022110531 A1 WO 2022110531A1 CN 2021073372 W CN2021073372 W CN 2021073372W WO 2022110531 A1 WO2022110531 A1 WO 2022110531A1
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- circuit breaker
- opening
- time
- closing
- current
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000009471 action Effects 0.000 claims abstract description 180
- 238000001514 detection method Methods 0.000 claims description 46
- 238000004891 communication Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
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- 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
Definitions
- the present application relates to the technical field of circuit breaker control, and in particular, to a circuit breaker and a control method and control device for opening and closing the same.
- the AC voltage is a sine wave, and the voltage may be close to the voltage peak at the time of closing. At this time, the closing will generate sparks or peak currents, resulting in contact wear and tear.
- the opening timing is just near the current peak, and the opening is at this time. A relatively large arc will be generated, which will ablate the contacts, and the generated arc will also affect the life of the arc extinguishing element.
- the main purpose of the present application is to propose a circuit breaker and a control method and control device for opening and closing thereof, aiming at improving the safety of the circuit breaker during opening and closing actions.
- the present application proposes a method for controlling the opening and closing of a circuit breaker, and the method for controlling the opening and closing of a circuit breaker includes the following steps:
- the opening and closing action command When receiving an opening and closing action command of the circuit breaker, obtain the travel time of the last opening and closing action of the circuit breaker, and the opening and closing action command includes an opening command or a closing command;
- the zero point time of the nearest access power supply to the current and determine the opening and closing start 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.
- the opening and closing action is performed at the starting moment of the switch, so that the opening and closing action of the circuit breaker is completed at the zero point of the power connection.
- the current opening and closing action time of the circuit breaker is the current closing action time;
- the zero point time, and according to the zero point time of the current closest access power supply and the current opening and closing action time of the circuit breaker, the opening and closing start time is determined, and the opening and closing action is performed at the opening and closing start time,
- the circuit breaker complete the opening and closing action at the zero point when the power is connected to the power supply it includes:
- determining the closing start time according to the voltage zero time of the connected power supply and the current closing action time of the circuit breaker is specifically:
- the circuit breaker further includes a drive assembly and a current pulse detection device, the drive assembly is used to drive the circuit breaker to perform opening and closing actions; the current pulse detection device is used to detect when the drive assembly is running. the number of current pulses and the interval time between each of said current pulses;
- the acquisition of the travel time of the last opening and closing action of the circuit breaker is specifically:
- the travel time of the last closing action is determined according to the number of current pulses in the last control closing action of the driving component and the interval time of each current pulse.
- the step of estimating the current opening and closing action time of the circuit breaker according to the travel time of the previous opening and closing action of the circuit breaker includes:
- the current closing action time of the circuit breaker is estimated according to the current operating speed of the drive assembly and the number of current pulses that the last drive assembly controlled the closing action.
- the circuit breaker further includes a current detection device, the current detection device is used to detect the current value of the drive assembly during operation; the travel time according to the last opening and closing action of the circuit breaker
- the steps for estimating the current opening and closing action time of the circuit breaker also include:
- the closing action time of the circuit breaker this time is estimated.
- the opening and closing action command is an opening command
- the current opening and closing action time of the circuit breaker is the current opening action time
- the opening and closing action time of the circuit breaker is predetermined. set to zero
- the opening and closing action is performed at the start time of the switch, so that the opening and closing action of the circuit breaker is completed at the zero point of the power connection, including:
- a control device for a circuit breaker includes:
- a circuit breaker further comprises a zero-crossing detection device for detecting the zero point moment when the circuit breaker is connected to a power supply; and the control device for the circuit breaker as described above;
- the circuit breaker uses any of the above circuit breaker opening and closing control methods.
- the circuit breaker after receiving the opening and closing action command of the circuit breaker, the circuit breaker is estimated by obtaining the travel time of the last opening and closing action of the circuit breaker, and then using the travel time of the last opening and closing action of the circuit breaker This opening and closing action time. And when obtaining the zero point time of the nearest access power supply, 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, determine the opening and closing start time, and start the opening and closing. The opening and closing action is carried out at all times, so that the circuit breaker can complete the opening and closing action at the zero point of access to the power supply, thereby improving the safety of the circuit breaker during the opening and closing action.
- FIG. 1 is a schematic flowchart of an embodiment of a method for controlling opening and closing of a circuit breaker according to the present application
- FIG. 2 is a schematic diagram of the refinement process of S10 in FIG. 1;
- Fig. 3 is the refinement flow schematic diagram of S30 in Fig. 2;
- Fig. 4 is another refinement flow schematic diagram of S30 in Fig. 1;
- FIG. 5 is a schematic diagram of functional modules of a circuit breaker according to an embodiment of the present application.
- the terms “connected”, “fixed” and the like should be understood in a broad sense, for example, “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
- “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
- the present application proposes a method for controlling the opening and closing of a circuit breaker.
- the circuit breaker opening and closing control method proposed by the present application includes the following steps:
- Step S10 When an opening and closing action command of the circuit breaker is received, the travel time of the previous opening and closing action of the circuit breaker is obtained, and the opening and closing action command includes an opening command or a closing command.
- the opening and closing action command includes an opening action command or a closing action command
- the above command may be sent by the cloud, a host computer, etc., or provided by a load device connected to the circuit breaker.
- the circuit breaker may be provided with a communication module for receiving the opening and closing instructions sent from the cloud or the host computer and transmitting it to the processor. After receiving the opening or closing action instruction, the circuit breaker starts to operate. Ready for closing or opening action. However, the opening and closing action will have a certain travel time from the beginning to the end of the execution.
- the opening and closing time of the circuit breaker is not necessarily the same each time, resulting in It cannot be precisely controlled, and it is still impossible to complete the opening and closing action at the zero time.
- this embodiment estimates the next time by referring to the travel time of the last opening and closing action. The environmental state does not change much, which is more conducive to improving the accuracy of this action time.
- long-distance control can be achieved through the communication module provided by the circuit breaker, and multiple circuit breakers can be controlled simultaneously, thereby improving the work efficiency of the circuit breaker.
- the communication module may be a gateway, a heartbeat packet, etc., which is not limited here.
- 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 the preset opening and closing action time of the circuit breaker, and the preset time is based on
- the preset stroke and the preset speed of opening and closing of the circuit breaker set according to the requirements are obtained through many tests.
- the preset stroke can be measured by a position detection sensor or a micro switch.
- the opening and closing action time of the circuit breaker will be affected by external environmental factors such as operating temperature and mechanical resistance.
- the closing action speed is different every time, so that the circuit breaker cannot complete the opening and closing at the zero time.
- the circuit breaker can estimate the current opening and closing action of the circuit breaker by detecting mechanical resistance, working temperature or detecting the current opening and closing action speed of the circuit breaker, combined with the travel time of the last opening and closing action. time, thereby improving the safety of circuit breaker opening and closing.
- the circuit breaker can be equipped with a voltage detection device or a current detection device, so as to detect the nearest working voltage zero point and working current zero point.
- Time to determine the starting time of the circuit breaker opening and closing action, to ensure that the moment the circuit breaker completes the opening action is just at the zero point of the working current, and similarly, the moment the circuit breaker completes the closing action is just at the working voltage. Zero hour. Thereby, the opening and closing safety and stability of the circuit breaker are further improved.
- the voltage detection device may be a voltage divider resistor or an operational amplifier. In practical applications, the voltage detection device may be selected according to requirements, which is not limited here.
- the current detection device may be a transformer, a conditioning circuit, or a current detection chip. In practical applications, it may be selected according to requirements, which is not limited here.
- the circuit breaker after receiving the opening and closing action command of the circuit breaker, the circuit breaker is estimated by obtaining the travel time of the last opening and closing action of the circuit breaker, and then using the travel time of the last opening and closing action of the circuit breaker This opening and closing action time. And when obtaining the zero point time of the nearest access power supply, 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, determine the opening and closing start time, and start the opening and closing. The opening and closing action is carried out at all times, so that the circuit breaker can complete the opening and closing action at the zero point of access to the power supply, thereby improving the safety of the circuit breaker during the opening and closing action.
- the current opening and closing action time of the circuit breaker is the current closing action time.
- the opening and closing action, so that the step S20 of the circuit breaker completing the opening and closing action at the zero point of the power supply includes:
- the specific closing start time is determined as follows:
- the specific starting time needs to be based on the formula:
- ts is the delay time (ms)
- f1 is the frequency (hz) of the working voltage of the known access power supply
- t is the action time (ms) of this closing
- the remainder of the current closing action time and the time between the two nearest voltage zero points Calculate, and then subtract the obtained result with the time between the two nearest voltage zero points, that is, the delay time can be obtained, then when the nearest voltage zero point of the power supply is obtained, the time after the delay time is At the beginning, the closing action of running at this moment can make the contact close at the zero point of the working voltage.
- the circuit breaker includes a drive assembly 30 and a current pulse detection device 40, and the step S10 of acquiring the travel time of the last opening and closing action of the circuit breaker is specifically:
- the driving component 30 is a DC brush motor, which is used for driving the circuit breaker to perform opening and closing operations.
- the current pulse detection device 40 is used to detect the number of current pulses and the interval time of each current pulse when the driving assembly is running.
- the current pulse of the DC brush motor represents that the DC motor has undergone commutation.
- the two pulses move the same distance.
- S12 Determine the travel time of the last closing action according to the number of current pulses and the interval time of each current pulse during the last control closing action of the driving component.
- the interval time of each current pulse is the same, so the travel time of the last closing action can be obtained by the number of current pulses and the interval between each pulse.
- the driving component in addition to a DC brush motor, may also be a servo motor, an AC motor, or the like. In practical application, it can be selected according to requirements, which is not limited here.
- the current pulse detection device is a current pulse detection circuit in this embodiment.
- a servo driver, an encoder, etc. can also be selected. In practical applications, selection can be made according to requirements, which is not limited here. .
- the DC motor when receiving the closing command, the DC motor first runs a preset number of current pulses to obtain the current running speed, and then judges the action time of the subsequent distance of this action according to the last travel time. For example, the last travel time was 10S and the distance of 10 pulses was traveled, that is, the last time the running speed was 1S and the distance of one pulse was traveled.
- the DC motor starts to run for 2 pulses. It took 3S, that is, the running speed of the DC motor this time is 1.5S per pulse, then the distance of the remaining 8 pulses, the remaining time this time needs 12S, so the closing action time of the circuit breaker this time is 12S.
- the running speed the influence of the working environment on the closing action time can be intuitively reflected, eliminating the need for devices to detect environmental factors.
- the previous travel time is used to estimate the next action time, making it more efficient. accurate.
- the circuit breaker further includes a current detection device 50, and the step S30 of estimating the current opening and closing action time of the circuit breaker according to the travel time of the previous opening and closing action of the circuit breaker further includes:
- the current detection device 50 is used to detect the current value of the drive assembly during operation.
- the contacts When the contacts are opened and closed for many times, the contacts will wear to a certain extent, and the stroke will increase. At this moment, the resistance of the DC motor will increase, and the closing The number of pulses will increase. When the current suddenly changes, the number of subsequent pulses can be recorded and added to the number of pulses required for this closing. Through current detection, it is possible to record excessive travel and calibrate the action time of this closing in the case of contact wear.
- the opening and closing action command is an opening command
- the current opening and closing action time of the circuit breaker is the current opening action time
- the opening and closing action time of the circuit breaker is predetermined. Set to zero value.
- the circuit breaker adopts the method of contact connection, the action time required for the contacts to separate when opening is zero, so when the circuit breaker receives the opening command, the current closest to the current access power supply Zero time is the start time of this opening action.
- control device of the circuit breaker proposed by the present application includes:
- the embodiments of the control device for the circuit breaker of the present application include all the technical solutions of all the embodiments of the above-mentioned circuit breaker opening and closing control methods, and the technical effects achieved are also the same, which will not be repeated here.
- the circuit breaker proposed by the present application further includes a zero-crossing detection device for detecting the zero-point moment when the circuit breaker is connected to the power supply; and the control device for the circuit breaker as described above , or, the circuit breaker uses any of the above circuit breaker opening and closing control methods.
- the zero-crossing detection device includes a current zero-point detection device 60 for detecting the working current flowing through the circuit breaker and a voltage zero-point detection device 70 for detecting the working voltage input into the circuit breaker.
- the drive assembly 30 , the current pulse detection device 40 , the current detection device 50 , the current zero-point detection device 60 and the voltage zero-point detection device 70 are all electrically connected to the processor 20 .
- the embodiment of the circuit breaker proposed in the present application includes the above-mentioned method for controlling the opening and closing of the circuit breaker or the control device of the circuit breaker, and the technical effects achieved are also the same, which will not be repeated here.
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Abstract
本申请公开一种断路器及其分合闸的控制方法和控制装置，该断路器分合闸控制方法包括以下步骤：接收到断路器的分合闸动作指令时，获取断路器上一次分合闸动作的行程时间，所述分合闸动作指令包括分闸指令或者合闸指令；根据所述断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间；获取距当前最近的接入电源的零点时刻，并根据距当前最近的接入电源的零点时刻以及所述断路器本次分合闸动作时间，确定分合闸开始时刻，并在所述分合闸开始时刻进行分合闸动作，以使所述断路器的在所述接入电源的零点时刻完成分合闸动作。从而提高了断路器进行分合闸动作时的安全性。
Description
相关专利
本申请要求2020年11月27日，申请号为202011368286.0，申请名称为“断路器及其分合闸的控制方法和控制装置”的中国专利申请的优先权，在此将其全文引入作为参考。
本申请涉及断路器控制技术领域，特别涉及一种断路器及其分合闸的控制方法和控制装置。
目前，交流断路器在分合闸过程中，因为合闸和分闸时间随机，交流电压是正弦波，可能合闸的时机刚好电压处于电压峰值附近。此时合闸就会产生火花或者峰值电流，产生触点磨损，另外当断路器进行带载分闸，此时又因为交流电流是正弦波，分闸的时机刚好处于电流峰值附近，此时分闸会产生比较大的电弧，会对触点产生烧蚀，且产生的电弧也会影响灭弧元件的寿命。
申请内容
本申请的主要目的是提出一种断路器及其分合闸的控制方法和控制装置，旨在提高断路器进行分合闸动作时的安全性。
为实现上述目的，本申请提出一种断路器分合闸控制方法，所述断路器分合闸控制方法包括以下步骤：
接收到断路器的分合闸动作指令时，获取断路器上一次分合闸动作的行程时间，所述分合闸动作指令包括分闸指令或者合闸指令；
根据所述断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间；
获取距当前最近的接入电源的零点时刻，并根据距当前最近的接入电源的零点时刻以及所述断路器本次分合闸动作时间，确定分合闸开始时刻，并在所述分合闸开始时刻进行分合闸动作，以使所述断路器的在所述接入电源的零点时刻完成分合闸动作。
在一实施例中，所述分合闸动作指令为合闸指令时，则所述断路器本次分合闸动作时 间为本次合闸动作时间；所述获取距当前最近的接入电源的零点时刻，并根据距当前最近的接入电源的零点时刻以及所述断路器本次分合闸动作时间，确定分合闸开始时刻，并在所述分合闸开始时刻进行分合闸动作，以使所述断路器的在所述接入电源的零点时刻完成分合闸动作包括：
获取距当前最近的接入电源的电压零点时刻，并根据接入电源的电压零点时刻以及所述断路器本次合闸动作时间，确定合闸开始时刻，并在所述合闸开始时刻进行合闸动作，以使所述断路器的在所述接入电源的电压零点时刻完成合闸动作。
在一实施例中，所述根据接入电源的电压零点时刻以及所述断路器本次合闸动作时间，确定合闸开始时刻具体为：
对所述本次合闸动作时间和两个最近的所述电压零点时刻之间的时间求余，再将求余后的结果与所述两个最近的所述电压零点时刻之间的时间作减法运算，得到距当前最近的接入电源的零点时刻与所述合闸开始时刻之间的时间。
在一实施例中，所述断路器还包括驱动组件和电流脉冲检测装置，所述驱动组件用于驱动断路器进行分合闸动作；所述电流脉冲检测装置用于检测所述驱动组件运行时的电流脉冲数量和每个所述电流脉冲的间隔时间；
所述获取断路器上一次分合闸动作的行程时间具体为：
获取驱动组件上一次控制合闸动作的电流脉冲数量和每个所述电流脉冲的间隔时间；
根据驱动组件上一次控制合闸动作过程中的电流脉冲数量和每个所述电流脉冲的间隔时间，确定出所述上一次合闸动作的行程时间。
在一实施例中，所述根据所述断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间的步骤包括：
控制驱动组件运行预设数量电流脉冲，并获取所述驱动组件的本次运行速度；
根据所述驱动组件的本次运行速度和上一次驱动组件控制合闸动作的电流脉冲数量，预估断路器的本次合闸动作时间。
在一实施例中，所述断路器还包括电流检测装置，所述电流检测装置用于检测所述驱动组件运行时的电流值；所述根据所述断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间的步骤还包括：
获取电流检测装置检测的所述驱动组件运行时的电流值；
根据所述驱动组件运行时的电流值，预估断路器本次合闸动作时间。
在一实施例中，所述分合闸动作指令为分闸指令时，则所述断路器本次分合闸动作时间为本次分闸动作时间，且所述断路器的分闸动作时间预设为零值；
所述获取距当前最近的接入电源的零点时刻，并根据所述接入电源的零点时刻以及所述断路器本次分合闸动作时间，确定分合闸开始时刻，并在所述分合闸开始时刻进行分合闸动作，以使所述断路器的在所述接入电源的零点时刻完成分合闸动作包括：
获取距当前最近的接入电源的电流零点时刻，并根据接入电源的电流零点时刻以及所述断路器本次分闸动作时间，确定分闸开始时刻，并在所述分闸开始时刻进行分闸动作，以使所述断路器的在所述接入电源的电流零点时刻完成分闸动作。
一种断路器的控制装置，所述断路器的控制装置包括：
存储器；
处理器；以及
存储在所述存储器上并被所述处理器执行的断路器分闸、合闸控制程序，所述断路器分闸、合闸控制程序在被所述处理器执行时，实现如上述任一项所述断路器分合闸控制方法。
一种断路器，所述断路器还包括了用于检测所述断路器接入电源的零点时刻的过零检测装置；以及如上述所述的断路器的控制装置；
或者，所述断路器使用了如上述任一断路器分合闸控制方法。
本申请技术方案中，在接收到断路器的分合闸动作指令后，通过获取断路器上一次分合闸动作的行程时间，再通过断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间。且在获取距当前最近的接入电源的零点时刻时，根据距当前最近的接入电源的零点时刻以及断路器本次分合闸动作时间，确定分合闸开始时刻，并在分合闸开始时刻进行分合闸动作，以使断路器的在接入电源的零点时刻完成分合闸动作，从而提高了断路器进行分合闸动作时的安全性。
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请断路器分合闸控制方法一实施例的流程示意图；
图2为图1中S10的细化流程示意图；
图3为图2中S30的细化流程示意图；
图4为图1中S30的另一细化流程示意图；
图5为本申请断路器一实施例的功能模块示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，本申请实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
在本申请中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
另外，在本申请中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
本申请提出一种断路器分合闸控制方法。
参照图1，在本申请一实施例中，本申请提出的断路器分合闸控制方法包括以下步骤：
步骤S10、接收到断路器的分合闸动作指令时，获取断路器上一次分合闸动作的行程时间，分合闸动作指令包括分闸指令或者合闸指令。
其中，分合闸动作指令包括分闸动作指令或合闸动作指令，上述指令可以由云端、上位机等发送，或者是与断路器连接的负载设备提供。在一实施例中，断路器中可设置有通 讯模块，用于接收来自云端或者上位机发送的分合闸指令并传输至处理器，当接收到分闸或者合闸动作指令后，断路器开始准备进行合闸或分闸的动作。然而分合闸动作从开始执行到结束执行会有一段行程时间，在具体过程中，由于受到工作温度、机械阻力等外界环境因素影响，断路器每次进行分合闸的时间不一定相同，导致不能精确控制，仍然无法在零点时刻完成分合闸动作。对此，本实施例通过参考上一次分合闸动作的行程时间，去进行预估下一次的时间，由于上一次分合闸动作距离本次分合闸之间间隔的时间最为接近，故外界环境状态变化不大，更有利于提高本次动作时间的精准度。同时，通过断路器设置的通讯模块，可以实现长距离控制，并且能够实现对多个断路器同时控制，提高了断路器的工作效率。
在一实施例中，通讯模块可以是网关、心跳包等，此处不作限定。
S20、根据断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间；
其中，若本次断路器分合闸动作为断路器第一次分合闸动作，则本次断路器分合闸动作按照预设断路器分合闸动作时间进行设定，预设的时间根据预设行程和根据需求设定的断路器分合闸预设动作速度经过多次试验获得。预设行程可以通过位置检测传感器或者微动开关等进行测量。断路器本次分合闸动作时间，会受到工作温度、机械阻力等外界环境因素的影响，具体表现在实际的断路器分合闸的动作速度会与预设速度有一定差距，当断路器分合闸动作速度每次不同时，从而导致断路器无法在零点时刻完成分合闸。因为，断路器可以通过检测机械阻力、工作温度或者是检测本次断路器分合闸的动作速度，再结合上一次进行分合闸动作的行程时间，预估断路器本次分合闸的动作时间，从而提高断路器分合闸的安全性。
S30、获取距当前最近的接入电源的零点时刻，并根据距当前最近的接入电源的零点时刻以及断路器本次分合闸动作时间，确定分合闸开始时刻，并在分合闸开始时刻进行分合闸动作，以使断路器的在接入电源的零点时刻完成分合闸动作。
其中，断路器可以通过设置电压检测装置或电流检测装置，从而检测最近的工作电压零点时刻和工作电流零点时刻，由于断路器进行分合闸需要一定的动作时间，因此需要根据分合闸的动作时间，确定断路器进行分合闸动作的开始时刻，以保证断路器在完成分闸动作的那一刻正好在工作电流零点时刻，同理在断路器完成合闸动作的那一刻刚好在工作电压的零点时刻。从而进一步的提高断路器的分合闸安全性和稳定性。
在一实施例中，电压检测装置可以为分压电阻、运算放大器，在实际应用中，可以根据需求进行选择，此处不作限定。
在一实施例中，电流检测装置可以为互感器、调理电路或者是采用电流检测芯片，在 实际应用中，可以根据需求进行选择，此处不作限定。
本申请技术方案中，在接收到断路器的分合闸动作指令后，通过获取断路器上一次分合闸动作的行程时间，再通过断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间。且在获取距当前最近的接入电源的零点时刻时，根据距当前最近的接入电源的零点时刻以及断路器本次分合闸动作时间，确定分合闸开始时刻，并在分合闸开始时刻进行分合闸动作，以使断路器的在接入电源的零点时刻完成分合闸动作，从而提高了断路器进行分合闸动作时的安全性。
参考图1，在本申请一实施例中，分合闸动作指令为合闸指令时，则断路器本次分合闸动作时间为本次合闸动作时间。获取距当前最近的接入电源的零点时刻，并根据距当前最近的接入电源的零点时刻以及断路器本次分合闸动作时间，确定分合闸开始时刻，并在分合闸开始时刻进行分合闸动作，以使断路器的在接入电源的零点时刻完成分合闸动作的步骤S20包括：
获取距当前最近的接入电源的电压零点时刻，并根据接入电源的电压零点时刻以及断路器本次合闸动作时间，确定合闸开始时刻，并在合闸开始时刻进行合闸动作，以使断路器的在接入电源的电压零点时刻完成合闸动作。
在本申请一实施例中，根据接入电源的电压零点时刻以及断路器本次合闸动作时间，确定合闸开始时刻具体为：
对本次合闸动作时间和两个最近的电压零点时刻之间的时间求余，再将求余后的结果与两个最近的电压零点时刻之间的时间作减法运算，得到距当前最近的接入电源的零点时刻与合闸开始时刻之间的时间。
其中，在获得了合闸指令后，由于合闸的动作时间一般来说大于工作电压零点之间的时间间隔，则具体的开始时刻需要根据公式：
进行计算，其中ts为延迟时间(ms)，f1为已知接入电源的工作电压的频率(hz)，
为两个最近的电压零点时刻之间的时间，t是本次合闸的动作时间(ms)，那么将本次合闸的动作时间与两个最近的电压零点时刻之间的时间进行求余计算，得到的结果再与两个最近的电压零点时刻之间的时间作减法运算，即可以得到延迟时间，则当获取到最近的接入电源的电压零点时刻后，经过延迟时间后的时刻为开始时刻，此刻开始运行合闸动作可以使触点刚好在工作电压零点处闭合。通过上述步骤，精确了合闸的开始时刻，使合闸能够精准的在工作电压零点处完成，提高了工作的稳定性。
参考图2，在本申请一实施例中，断路器包括驱动组件30和电流脉冲检测装置40， 获取断路器上一次分合闸动作的行程时间的步骤S10具体为：
S11、获取驱动组件上一次控制合闸动作的电流脉冲数量和每个电流脉冲的间隔时间。
其中，驱动组件30为直流有刷电机，用于驱动断路器进行分合闸动作。电流脉冲检测装置40用于检测驱动组件运行时的电流脉冲数量和每个电流脉冲的间隔时间。直流有刷电机的电流脉冲代表了直流电机经过了换相，当绕组相数固定，减速比固定时，两个脉冲之间移动了同样的距离。通过采用直流电机驱动断路器的分合闸运动，可以比较精确的检测分合闸的动作时间，并且直流电机工作更加稳定，提高了断路器分合闸的稳定性。
S12、根据驱动组件上一次控制合闸动作过程中的电流脉冲数量和每个电流脉冲的间隔时间，确定出上一次合闸动作的行程时间。
其中，每个电流脉冲的间隔时间相同，所以可以通过电流脉冲的数量和每个脉冲之间的间隔，从而得到上一次合闸动作的行程时间。
在一实施例中，驱动组件除了为直流有刷电机外，还可以是伺服电机、交流电机等，在实际运用中，可以根据需求进行选择，此处不作限定。
在一实施例中，电流脉冲检测装置在本实施例中为电流脉冲检测电路，除此以外，还可以选用伺服驱动器，编码器等，在实际应用中，可以根据需求进行选择，此处不作限定。
参考图3，在本申请一实施例中，根据断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间的步骤S30：
S31、控制驱动组件运行预设数量电流脉冲，并获取驱动组件的本次运行速度。
S32、根据驱动组件的本次运行速度和上一次驱动组件控制合闸动作的电流脉冲数量，预估断路器的本次合闸动作时间。
其中，当接收到合闸指令时，直流电机先运行预设数量电流脉冲从而获取本次运行速度，再根据上一次的行程时间判断本次动作后续距离的动作时间。例如，上一次行程时间为10S且走过了10个脉冲的距离，即上一次运行速度为1S走过一个脉冲的距离，本次获取到合闸指令时，直流电机开始运行动作2个脉冲，花费了3S，即本次直流电机的运行速度为1.5S一个脉冲，那么剩余8个脉冲的距离，本次剩余时间还需要12S，故断路器本次合闸动作时间就为12S。通过检测运行速度，可以很直观的体现工作环境对于合闸动作时间的影响，省去了检测环境因素的装置，同时采用上一次的行程时间进行预估下一次的动作时间，使其更为的精确。
参考图4，在本申请一实施例中，断路器还包括电流检测装置50，根据断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间的步骤S30还包括：
S33、获取电流检测装置检测的驱动组件运行时的电流值。
S34、根据驱动组件运行时的电流值，预估断路器本次合闸动作时间。
其中，电流检测装置50用于检测驱动组件运行时的电流值，当触点多次进行开合闸后，触点会有一定的磨损，行程增加，此刻直流电机的阻力会增大，合闸的脉冲数会增多，可以在电流突变时，记录后续的脉冲数量，加入进本次合闸所需的脉冲数量中。通过电流检测，可以在触点磨损的情况下，记录过多的行程并且校准本次合闸的动作时间。
参考图1，在本申请一实施例中，分合闸动作指令为分闸指令时，则断路器本次分合闸动作时间为本次分闸动作时间，且断路器的分闸动作时间预设为零值。
获取距当前最近的接入电源的零点时刻，并根据接入电源的零点时刻以及断路器本次分合闸动作时间，确定分合闸开始时刻，并在分合闸开始时刻进行分合闸动作，以使断路器的在接入电源的零点时刻完成分合闸动作包括：
获取距当前最近的接入电源的电流零点时刻，并根据接入电源的电流零点时刻以及断路器本次分闸动作时间，确定分闸开始时刻，并在分闸开始时刻进行分闸动作，以使断路器的在接入电源的电流零点时刻完成分闸动作。
其中，由于断路器采用的是触点连接的方式，所以分闸时触点分开所需的动作时间为零值，故断路器在接收到分闸指令时，距当前最近的接入电源的电流零点时刻即为本次分闸动作的开始时刻。
此外，参考图5，在本申请一实施例中，本申请提出的断路器的控制装置包括：
存储器10；
处理器20；以及
存储在存储器10上并被处理器20执行的断路器分闸、合闸控制程序，断路器分闸、合闸控制程序在被处理器20执行时，实现如上述实施例任一项断路器分合闸控制方法。
因此，本申请断路器的控制装置实施例包括上述断路器分合闸控制方法的全部实施例的全部技术方案，且所达到的技术效果也完全相同，在此不再赘述。
此外，参考图5，在本申请一实施例中，本申请提出的断路器还还包括了用于检测断路器接入电源的零点时刻的过零检测装置；以及如上述的断路器的控制装置，或者，断路器使用了如上述任一断路器分合闸控制方法。
其中，过零检测装置包括用于检测断路器上流过的工作电流的电流零点检测装置60和用于检测输入进断路器的工作电压的电压零点检测装置70。驱动组件30、电流脉冲检测装置40、电流检测装置50、电流零点检测装置60和电压零点检测装置70均与处理器 20电连接。
因此，本申请提出的断路器的实施例包括了上述断路器分合闸控制方法或断路器的控制装置，且所达到的技术效果也完全相同，在此不再赘述。
Claims (13)
- 一种断路器分合闸控制方法，其中，所述断路器分合闸控制方法包括以下步骤：接收到断路器的分合闸动作指令时，获取断路器上一次分合闸动作的行程时间，所述分合闸动作指令包括分闸指令或者合闸指令；根据所述断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间；获取距当前最近的接入电源的零点时刻，并根据距当前最近的接入电源的零点时刻以及所述断路器本次分合闸动作时间，确定分合闸开始时刻，并在所述分合闸开始时刻进行分合闸动作，以使所述断路器的在所述接入电源的零点时刻完成分合闸动作。
- 根据权利要求1所述的断路器分合闸控制方法，其中，所述分合闸动作指令为合闸指令时，则所述断路器本次分合闸动作时间为本次合闸动作时间；所述获取距当前最近的接入电源的零点时刻，并根据距当前最近的接入电源的零点时刻以及所述断路器本次分合闸动作时间，确定分合闸开始时刻，并在所述分合闸开始时刻进行分合闸动作，以使所述断路器的在所述接入电源的零点时刻完成分合闸动作包括：获取距当前最近的接入电源的电压零点时刻，并根据接入电源的电压零点时刻以及所述断路器本次合闸动作时间，确定合闸开始时刻，并在所述合闸开始时刻进行合闸动作，以使所述断路器在所述接入电源的电压零点时刻完成合闸动作。
- 根据权利要求2所述的断路器分合闸控制方法，其中，所述根据接入电源的电压零点时刻以及所述断路器本次合闸动作时间，确定合闸开始时刻具体为：对所述本次合闸动作时间和两个最近的所述电压零点时刻之间的时间求余，再将求余后的结果与所述两个最近的所述电压零点时刻之间的时间作减法运算，得到距当前最近的接入电源的零点时刻与所述合闸开始时刻之间的时间。
- 根据权利要求2所述的断路器分合闸控制方法，其中，所述断路器还包括驱动组件和电流脉冲检测装置，所述驱动组件用于驱动断路器进行分合闸动作；所述电流脉冲检测装置用于检测所述驱动组件运行时的电流脉冲数量和每个所述电流脉冲的间隔时间；所述获取断路器上一次分合闸动作的行程时间具体为：获取驱动组件上一次控制合闸动作的电流脉冲数量和每个所述电流脉冲的间隔时间；根据驱动组件上一次控制合闸动作过程中的电流脉冲数量和每个所述电流脉冲的间 隔时间，确定出上一次合闸动作的行程时间。
- 根据权利要求4所述的断路器分合闸控制方法，其中，所述根据所述断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间的步骤包括：控制驱动组件运行预设数量电流脉冲，并获取所述驱动组件的本次运行速度；根据所述驱动组件的本次运行速度和上一次驱动组件控制合闸动作的电流脉冲数量，预估断路器的本次合闸动作时间。
- 根据权利要求4所述的断路器分合闸控制方法，其中，所述断路器还包括电流检测装置，所述电流检测装置用于检测所述驱动组件运行时的电流值；所述根据所述断路器上一次分合闸动作的行程时间预估断路器本次分合闸动作时间的步骤还包括：获取电流检测装置检测的所述驱动组件运行时的电流值；根据所述驱动组件运行时的电流值，预估断路器本次合闸动作时间。
- 根据权利要求1-6任一项所述的断路器分合闸控制方法，其中，所述分合闸动作指令为分闸指令时，则所述断路器本次分合闸动作时间为本次分闸动作时间，且所述断路器的分闸动作时间预设为零值；所述获取距当前最近的接入电源的零点时刻，并根据所述接入电源的零点时刻以及所述断路器本次分合闸动作时间，确定分合闸开始时刻，并在所述分合闸开始时刻进行分合闸动作，以使所述断路器的在所述接入电源的零点时刻完成分合闸动作包括：获取距当前最近的接入电源的电流零点时刻，并根据接入电源的电流零点时刻以及所述断路器本次分闸动作时间，确定分闸开始时刻，并在所述分闸开始时刻进行分闸动作，以使所述断路器的在所述接入电源的电流零点时刻完成分闸动作。
- 一种断路器的控制装置，其中，所述断路器的控制装置包括：存储器；处理器；以及存储在所述存储器上并被所述处理器执行的断路器分闸、合闸控制程序，所述断路器分闸、合闸控制程序在被所述处理器执行时，实现如权利要求1-7任一项所述断路器分合闸控制方法。
- 一种断路器，其中，所述断路器还包括了用于检测所述断路器接入电源的零点时刻的过零检测装置；以及如权利要求8所述的断路器的控制装置；或者，所述断路器使用了如权利要求1-3的任一项所述的断路器分合闸控制方法。
- 根据权利要求9所述的断路器，其中，所述过零检测装置包括用于检测接入电源的电流零点的电流零点检测装置和用于检测接入电源的电压零点的电压零点检测装置，所述电流零点检测装置与所述电压零点检测装置均与所述处理器电连接，所述断路器使用了如权利要求7所述的断路器分合闸控制方法。
- 根据权利要求9所述的断路器，其中，所述断路器还包括驱动组件、电流脉冲检测装置和电流检测装置，所述驱动组件、电流脉冲检测装置和电流检测装置均与所述处理器电连接；所述电流脉冲检测装置与所述驱动组件电连接，并用于检测所述驱动组件运行时的电流脉冲数量和每个所述电流脉冲的间隔时间；所述电流检测装置与所述驱动组件电连接，并用于检测所述驱动组件运行时的电流值；所述断路器使用了如权利要求4-6的任一项所述的断路器分合闸控制方法。
- 根据权利要求11所述的断路器，其中，所述驱动组件为直流有刷电机。
- 根据权利要求9所述的断路器，其中，所述断路器还包括通讯模块，所述通讯模块与所述处理器电连接，所述通讯模块与上位机无线通讯连接；所述通讯模块，用于接收来自所述上位机发出的所述分合闸动作指令，并将所述分合闸动作指令输出至所述处理器。
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| CN115579962A (zh) * | 2022-12-07 | 2023-01-06 | 国网新源控股有限公司 | 一种同期并网优化方法及装置 |
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| CN114551157B (zh) * | 2022-03-04 | 2023-07-11 | 阳光电源（上海）有限公司 | 一种可控开关的动作控制方法和逆变器的开关电路 |
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