阅读说明：本技术 一种单相线路时间可控的通断方法 (A kind of on-off method that the uniline time is controllable ) 是由 薛占钰 邢进春 张同刚 于 2019-08-28 设计创作，主要内容包括：本发明公开了一种单相线路时间可控的通断方法,首先在单相线路上串联第一电控开关和第二电控开关,并经控制单元分别控制；初始状态为所述第一电控开关断开,所述第二电控开关闭合；通过控制单元分别向两个电控开关发出信号,先由第一电控开关导通单相线路,再由第二电控开关将单相线路切断,通过调整控制单元向两个电控开关发出动作指令的时间间隔来使导通时刻和切断时刻的时间为预设的通断时段。该方法能够控制单相线路在更短的时间内导通并断开,从而突破一个接触器或断路器通断电路时由于机械过程限制而无法实现的更短时间内通断电路的不足。(The invention discloses a kind of on-off method that the uniline time is controllable, connect on uniline first the first electric-controlled switch and the second electric-controlled switch, and controlled respectively through control unit；Original state is first electric-controlled switch disconnection, the second electric-controlled switch closure；Signal is issued to two electric-controlled switch respectively by control unit, uniline is first connected by the first electric-controlled switch, uniline is cut off by the second electric-controlled switch again, issues the time interval of action command to two electric-controlled switch by adjusting control unit to make turn-on instant and cut off the time preset on-off period at moment.This method can control uniline and be turned on and off within the shorter time, to break through a contactor or when breaker on-off circuit due to the deficiency of on-off circuit in mechanical process limits and cannot achieve shorter time.)

1. a kind of on-off method that the uniline time is controllable, it is characterised in that include the following steps:

(a) it connects on uniline the first electric-controlled switch and the second electric-controlled switch, and controls the first electricity respectively through control unit The on-off of control switch and the second electric-controlled switch；

(b) original state is first electric-controlled switch disconnection, the second electric-controlled switch closure；

(c) closure signal, the second electric-controlled switch of Xiang Suoshu are issued to first electric-controlled switch respectively by described control unit Cut-off signal is issued, the uniline is first connected by the first electric-controlled switch, then cut off uniline by the second electric-controlled switch, And the time interval of action command is issued to make list to the first electric-controlled switch and the second electric-controlled switch by adjusting control unit The turn-on instant and the time interval at cutting moment of phase line are the preset on-off period.

2. the on-off method that the uniline time as described in claim 1 is controllable, which is characterized in that measure the control in advance T at the time of unit issues action command to first electric-controlled switch₁Electric current moment t is begun with single-wire line₂；Measurement in advance T at the time of described control unit issues action command to second electric-controlled switch₁' and single-wire line start the no current moment t₂'；By making time interval t₂’- t₂Determine described control unit to described first equal to the preset on-off period Jian Ge ∣ t between electric-controlled switch and the Shi of the second electric-controlled switch sending action command₁’- t₁∣。

3. the on-off method that the uniline time as described in claim 1 is controllable, which is characterized in that first pass through test in advance and determine Time interval and the turn-on instant of the described control unit to the first electric-controlled switch and the second electric-controlled switch sending action command Corresponding relationship between the time interval at cutting moment determines that control unit automatically controlled is opened to first according to the corresponding relationship The time interval for issuing action command with the second electric-controlled switch is closed, is made between the turn-on instant of uniline and the time at cutting moment It is divided into the preset on-off period.

4. the on-off method that the uniline time as claimed in claim 1,2 or 3 is controllable, which is characterized in that the control is single Member is triggered first by obtaining PT signal to first electric-controlled switch or the second automatically controlled action command.

5. the on-off method that the uniline time as claimed in claim 1,2 or 3 is controllable, which is characterized in that the control is single Member uses STM32F103 single-chip microcontroller.

6. the on-off method that the uniline time as claimed in claim 1,2 or 3 is controllable, which is characterized in that first electricity Control switch and the second electric-controlled switch are vacuum contactor or breaker.

Technical field

The present invention relates to a kind of methods for controlling circuit on-off, and with being related to, a kind of uniline that make-and-break time is controllable is logical Disconnected method.

Background technique

It often needs to use breaker, contactor etc. in high pressure or low-voltage circuit and carrys out control circuit on-off.Breaker or contact Device generally comprises the components such as spring energy agency, movable contact, stationary contact, need to close a floodgate communication line when, spring energy agency drive Dynamic movable contact is quickly moved with stationary contact point contact to realize that circuit is connected or counteragent makes circuitry cuts.In the application having Under scene, need separated when short enough again after circuit is connected, but breaker, contactor etc. are believed from movement is received Number start action moment to circuit is really connected (because of high-voltage arc discharge, sound contact before Mechanical Contact may just incited somebody to action Circuit conducting) moment has certain period of time, contact contact separated machinery again is undergone to disconnecting circuit again after conducting Process needs to expend certain time (because, because of phenomenon of arc discharge, dynamic/static contact can just incite somebody to action after being separated by a distance under high-pressure situations Circuit is really cut off, this needs to expend certain time), so will be in the completion electricity of the time more shorter than above process spent time Road on-off cannot achieve by a contactor or breaker.

Summary of the invention

The object of the present invention is to provide a kind of on-off method that the uniline time is controllable, this method can control phase line Road is turned on and off within the shorter time, thus since mechanical process limits when breaking through a contactor or breaker on-off circuit Make and in the shorter time that cannot achieve on-off circuit deficiency.

To achieve the goals above, the present invention adopts the following technical scheme that:

A kind of on-off method that the uniline time is controllable, it is characterised in that include the following steps:

(a) it connects on uniline the first electric-controlled switch and the second electric-controlled switch, and controls the first electricity respectively through control unit The on-off of control switch and the second electric-controlled switch；

(b) original state is first electric-controlled switch disconnection, the second electric-controlled switch closure；

(c) closure signal, the second electric-controlled switch of Xiang Suoshu are issued to first electric-controlled switch respectively by described control unit Cut-off signal is issued, the uniline is first connected by the first electric-controlled switch, then cut off uniline by the second electric-controlled switch, And the time interval of action command is issued to make list to the first electric-controlled switch and the second electric-controlled switch by adjusting control unit The turn-on instant and the time interval at cutting moment of phase line are the preset on-off period.

Preferably, t at the time of measurement described control unit issues action command to first electric-controlled switch in advance₁And list Line route begins with electric current moment t₂；In advance measurement described control unit to second electric-controlled switch issue action command when Carve t₁' and single-wire line start no current moment t₂'；By making time interval t₂’- t₂Equal to the preset on-off period To determine described control unit to Jian Ge ∣ t between first electric-controlled switch and the Shi of the second electric-controlled switch sending action command₁’- t₁∣。

Preferably, test is first passed through in advance determines that described control unit is dynamic to the first electric-controlled switch and the sending of the second electric-controlled switch Make the corresponding relationship between the time interval instructed and the turn-on instant and the time interval for cutting off the moment, according to the correspondence Relationship issues the time interval of action command to determine control unit to the first electric-controlled switch and the second electric-controlled switch, makes phase line The turn-on instant and the time interval at cutting moment on road are the preset on-off period.

Preferably, described control unit is triggered by obtaining PT signal first to first electric-controlled switch or the second electricity The action command of control.

Described control unit uses STM32F103 single-chip microcontroller.

First electric-controlled switch and the second electric-controlled switch are vacuum contactor or breaker.

In the method for the present invention, worked in coordination by two electric-controlled switch, one is become to be connected in circuit by disconnection, another Circuit is disconnected by conducting, it is dynamic to adjust control unit sending by the time consumed in two respective mechanical processes of switch of measurement Make the time interval instructed, connecting and disconnecting of the circuit can be made to complete within the shorter time.The above method is because only utilize some switch Closing or opening operation, rather than therefore can be led simultaneously with a switching circuit using the operation disconnected after closure again It is short enough with time interval setting of another switch disconnecting circuit again after logical, it only need to be according to the desired on-off circuit time And it combines two to switch the time interval that mechanical actuation time switchs sending action commands to two to control unit and is configured .The problem of this method simplicity is easy-to-use, is able to solve quick on-off circuit.Three-phase line is being solved using asymmetric current source Ground fault field has other to switch incomparable superiority.

Detailed description of the invention

Fig. 1 single-wire line upper switch and control unit structural schematic diagram；

The time chart one of Fig. 2 control unit sending signal and two electric-controlled switch on or off circuits；

The time chart two of Fig. 3 control unit sending signal and two electric-controlled switch on or off circuits；

The recording figure of Fig. 4 two electric-controlled switch voltages that recording software is intercepted and captured in a test case and single-wire line electric current.

Specific embodiment

Below by embodiment, the present invention will be further described: