CN108072784A - A kind of distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling - Google Patents
A kind of distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling Download PDFInfo
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- CN108072784A CN108072784A CN201711234109.1A CN201711234109A CN108072784A CN 108072784 A CN108072784 A CN 108072784A CN 201711234109 A CN201711234109 A CN 201711234109A CN 108072784 A CN108072784 A CN 108072784A
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- resistance
- residual voltage
- voltage
- bistable relay
- distribution line
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
Abstract
The invention discloses a kind of distribution line residual voltage detection circuits based on single pulse Detection ＆ Controling, belong to the technical field that distribution line residual voltage measures.The detection circuit includes：Rectifier bridge, divider resistance, energy storage capacitor, discharge resistance, charging capacitor, pressure limiting diode, bistable relay, event is powered on using the residual voltage detection circuit detection residual voltage of single pulse Detection ＆ Controling, it is truly realized the detection function of residual voltage event, the circuit structure is simple, the duration being applied to by the startup voltage for the circuit parameter residual voltage incoming event for rationally designing each device on relay is very short, further power consumption is avoided, is conducive to the reliability service of Feeder Terminal Unit.
Description
Technical field
The invention discloses a kind of distribution line residual voltage detection circuits based on single pulse Detection ＆ Controling, belong to distribution
The technical field of circuit residual voltage measurement.
Background technology
In order to reduce power distribution network power off time, power supply reliability is improved, line feed terminals pass through according to the state of both sides circuit
Feeder line section switch applied voltage time type control logic realizes safe power supply.
The state of both sides circuit includes passing incoming call situation, it is necessary to which special auxiliary circuit (i.e. residual voltage detection circuit) gathers
Circuit residual voltage is simultaneously held the record until Feeder Terminal Unit is read and involution.Special auxiliary circuit avoids line feed terminals in its mistake
Electricity to restart can not work in steady operation blind area this period the defects of.
Existing residual voltage detection method is to record and keep coming electricity condition as long as having electricity, and circuit is simple, but there is also two
Item deficiency.Section 1 deficiency is involution after Feeder Terminal Unit is read, and residual voltage detection can offer electricity condition, it is necessary to present again
Line terminal equipment is filtered processing to carrying out electricity condition again, once line feed terminals dead electricity is restarted, will be unable to confirm residual voltage detection
The validity of state；Section 2 deficiency is in a state that circuit is charged for a long time, and Feeder Terminal Unit is constantly in starting state,
Power consumption is larger, is unfavorable for the reliability service of equipment.
The content of the invention
The goal of the invention of the present invention is the deficiency for above-mentioned background technology, provide it is a kind of based on single pulse detection with
The distribution line residual voltage detection circuit of control, realizes the detection of distribution line residual voltage event, it is residual to solve existing distribution line
Pressure detection scheme can not truely and accurately reflect calling event, require that circuit is charged always, signal can still be reported by mistake after involution, grown
The technical issues of phase band electrical power consumed is larger.
The present invention adopts the following technical scheme that for achieving the above object：
A kind of distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling, including rectifier bridge, divider resistance,
Energy storage capacitor, discharge resistance, charging capacitor, pressure limiting diode, bistable relay, the exchange side joint distribution line two of rectifier bridge
Secondary side voltage, the positive polarity dc bus of a termination rectifier bridge of divider resistance, the other end of divider resistance and energy storage capacitor
One pole, one end of discharge resistance, a pole of charging capacitor are connected, another pole and the bistable relay closing line of charging capacitor
Circle one end connection, the other end of bistable relay closing coil, the other end of discharge resistance, energy storage capacitor another pole simultaneously
It connects and is connected afterwards with the negative polarity d. c busbar of rectifier bridge, bistable relay switching winding connects slot signal, and pressure limiting diode is anti-
To being attempted by between the two-terminal of bistable relay closing coil.
Startup voltage VQ, the bistable relay Coil resistance RJ inputted according to residual voltage event determines the resistance value of divider resistance
R1：R2 is the resistance value of discharge resistance, and VJ is the operating voltage of bistable relay.
The capacitance of energy storage capacitor and charging capacitor meets the minimum requirement for starting the time of bistable relay,C2 is the capacitance of charging capacitor, and TJ is that the minimum of bistable relay starts the time, and RJ is bistable relay
Coil resistance, K are coefficient,VJX is that the minimum of bistable relay starts voltage, and VD is pressure limiting diode
Conducting voltage, the capacitance C1 of energy storage capacitor at least gets the capacitance C2 of charging capacitor.
According to energy storage capacitor by discharge resistance electric discharge until the voltage on energy storage capacitor is minimum less than bistable relay
The time that startup voltage is undergone is less than the resistance value of the principle selection discharge resistance for the minimum interval that residual voltage generates again, according to
According to expression formula：The resistance value R2, TW that C1*R2=1.2*TW chooses discharge resistance are the minimum interval that residual voltage generates again.
The conducting voltage of pressure limiting diode matches with bistable relay operating voltage, i.e. pressure limiting diode current flow electricity
Numerical value of the numerical value of pressure for bistable relay operating voltage or the numerical value no more than 1.2 times of bistable relay operating voltages.
The present invention is had the advantages that using above-mentioned technical proposal：Using the residual voltage of single pulse Detection ＆ Controling
Detection circuit detection residual voltage power on event and unconventional residual voltage input real-time status, therefore can avoid residual voltage input it is charged when
Residual voltage input real-time status wrong report caused by involution, even if line feed terminals do not have timely involution, the testing result of residual voltage event
It will not fail because of restarting for line feed terminals, be truly realized the detection function of residual voltage event, the circuit is only comprising simple
Passive device, by the circuit parameter for rationally designing each device so that the startup voltage of residual voltage incoming event is applied to relay
On duration it is very short, avoid further power consumption, be conducive to the reliability service of Feeder Terminal Unit.
Description of the drawings
Fig. 1 is the method flow diagram of present invention design circuit parameter.
Fig. 2 is the circuit structure diagram of detection circuit of the present invention.
Fig. 3 is the equivalent circuit diagram of pulse-detecting circuit of the present invention.
Fig. 4 is the equivalent circuit diagram of single pulse control circuit of the present invention.
Figure label explanation：D1 is rectifier bridge, and R1 is divider resistance, and C1 is energy storage capacitor, and R2 is discharge resistance, and C2 is to fill
Capacitance, D2 are pressure limiting diode, and RLY1 is bistable relay.
Specific embodiment
The technical solution of invention is described in detail below in conjunction with the accompanying drawings.
Distribution line residual voltage detection circuit of the present invention based on single pulse Detection ＆ Controling is as shown in Fig. 2, bag
Include rectifier bridge D1, divider resistance R1, energy storage capacitor C1, discharge resistance R2, charging capacitor C2, pressure limiting diode D2, bistable state after
The exchange side joint distribution line secondary side voltage of electric appliance RLY1, rectifier bridge D1, a termination rectifier bridge D1 of divider resistance R1 is just
Polarity DC busbar, the other end and a pole of energy storage capacitor C1, one end of discharge resistance R2, the charging capacitor C2 of divider resistance R1
A pole be connected, another pole of charging capacitor C2 is connected with one end of bistable relay RLY1 closing coils, bistable state after
The other end of electric appliance RLY1 closing coils, the other end of discharge resistance R2, another pole of energy storage capacitor C1 and after connecing and rectifier bridge
The negative polarity d. c busbar connection of D1, bistable relay RLY1 switching windings connect slot signal, and pressure limiting diode D2 is reversely simultaneously
It is connected between the two-terminal of bistable relay RLY1 closing coils.
Rectifier bridge is for detecting distribution line residual voltage power on signal, and energy storage capacitor and discharge resistance composition fast energy storage are at a slow speed
The pulse-detecting circuit of adjustable discharge circuit, divider resistance and bistable relay composition pressure-adjustable, with bistable state relay
The charging capacitor composition single pulse control circuit of device actuating coil series connection.
The Parameters design of distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling as shown in Figure 1,
Comprise the following steps：
Step 1, after the startup voltage VQ, the bistable relay Coil resistance RJ that determine the input of residual voltage event, with reference to Fig. 3 institutes
Show the equivalent circuit calculating partial pressure resistance R1 of pulse-detecting circuit,R2 is the resistance of discharge resistance
Value, VJ are the operating voltage of bistable relay；
Step 2, with reference to shown in Fig. 4 single pulse control circuit equivalent circuit, opened according to the minimum of bistable relay
Dynamic time TJ determines the capacitance of energy storage capacitor and charging capacitor, and the operating voltage VJ according to bistable relay chooses two pole of pressure limiting
The conducting voltage of pipe, the capacitance of charging capacitor C2 will meet the minimum requirements for starting the time of bistable relay RLY1, i.e. protect
The time that card progressively decays to the minimum startup voltage VJX of bistable relay from the pressure limiting diode turn-on voltage VD of beginning is enough
Starting relay, K*C2*RJ>TJ, i.e.The capacitance of energy storage capacitor C1 can take at least
The capacitance of charging capacitor C2, in order to protect bistable relay coil and so that charging capacitor fills in single pulse control circuit
The electric time powers on the influence of voltage swing from residual voltage, and pressure limiting diode turn-on voltage VD can select VJ or no more than 1.2 times
VJ；
Step 3, the minimum interval TW generated again according to residual voltage chooses the resistance value of discharge resistance resistance, such as Fig. 2 institutes
Show, when residual voltage power on signal dead electricity again, energy storage capacitor C1 is by discharge resistance R2 electric discharges until the electricity on storage capacitor C1
It forces down and starts voltage VJX in the minimum of bistable relay, when selecting the relay of lower operating voltage, designed to simplify,
Take C1*R2=1.2*TW.
The startup voltage of residual voltage incoming event can be adjusted by adjusting the resistance value of divider resistance, adjust discharge resistance
Resistance value can match the minimum interval that residual voltage generates again.
V1 is exported after the rectified bridge of power on signal of residual voltage input, V1 quickly fills energy storage capacitor C1 through divider resistance R1
Electricity, the charging time R1*C1 of energy storage capacitor C1 can be neglected compared with the startup time of relay, and charged capacitance C2 is straight simultaneously by V1
It connects and applies voltage V3 to bistable relay RLY1 closing coils, the switch in relay is closed output when closing coil obtains electric
It characterizes the signal of residual voltage event detection outcome, due to bistable relay RLY1 closing coils pressure limiting diode D2 in parallel, applies
The voltage V3 being added on bistable relay RLY1 closing coils progressively decays directly with continuous raise of voltage on charging capacitor
Most zero, complete single pulse Detection ＆ Controling.
When the power on signal of residual voltage input reaches the minimum startup voltage VJX of bistable relay coil and is applied to coil
On duration beyond bistable relay start the time when, bistable relay starts, show to detect residual voltage power on signal this
One event, bistable relay keep starting state to be applied with up to the switch in passive involution, relay on switching winding
Recover normally open during slot signal,.
When residual voltage power on signal, dead electricity, V1 zero, energy storage capacitor discharge to discharge resistance up to being zero again, discharge resistance
Discharge time is less than the minimum interval that residual voltage generates again, and whole process returns original place, waits the residual voltage event inspection of next time
It surveys.
Claims (6)
1. a kind of distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling, which is characterized in that including：Rectification
Bridge, divider resistance, energy storage capacitor, discharge resistance, charging capacitor, pressure limiting diode, bistable relay, the friendship of the rectifier bridge
Flow the secondary survey voltage of side joint distribution line, divider resistance one termination rectifier bridge positive polarity dc bus, divider resistance it is another
One end is connected with a pole of a pole of energy storage capacitor, one end of discharge resistance, charging capacitor, another pole of charging capacitor with it is double
One end connection of steady-state relay closing coil, the other end of bistable relay closing coil, the other end of discharge resistance store
Can another pole and connecing of capacitance be connected afterwards with the negative polarity d. c busbar of rectifier bridge, bistable relay switching winding, which connects involution, to be believed
Number, pressure limiting diode is reversely attempted by between the two-terminal of bistable relay closing coil, the energy storage capacitor and the electricity that charges
The capacitance of appearance meets the minimum requirement for starting the time of bistable relay, the conducting voltage of the pressure limiting diode and bistable state after
Electrical work voltage matches, according to energy storage capacitor by discharge resistance electric discharge until the voltage on energy storage capacitor is less than bistable state
The principle that the time that the minimum startup voltage of relay is undergone is less than the minimum interval that residual voltage generates again chooses electric discharge electricity
The resistance value of resistance.
2. the distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling, feature exist according to claim 1
In the resistance value of divider resistance is by expression formula：It determines, R1, R2 are respectively divider resistance, electric discharge electricity
The resistance value of resistance, RJ are bistable relay Coil resistance, and VQ is the startup voltage of residual voltage event input, and VJ is bistable relay
Operating voltage.
3. the distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling, feature exist according to claim 1
In the capacitance of charging capacitor meets expression formula：C2 is the capacitance of charging capacitor, and TJ is bistable relay
Minimum starts the time, and RJ is bistable relay Coil resistance, and K is coefficient,VJX is bistable relay
It is minimum start voltage, VD is the conducting voltage of pressure limiting diode.
4. the distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling, feature exist according to claim 1
In the resistance value of the discharge resistance is according to expression formula：C1*R2=1.2*TW chooses, and C1 is the capacitance of energy storage capacitor, and R2 is electric discharge
The resistance value of resistance, TW are the minimum interval that residual voltage generates again.
5. the distribution line residual voltage detection based on single pulse Detection ＆ Controling according to any one in Claims 1-4
Circuit, which is characterized in that the capacitance of the energy storage capacitor is greater than or equal to the capacitance of charging capacitor.
6. the distribution line residual voltage detection based on single pulse Detection ＆ Controling according to any one in Claims 1-4
Circuit, which is characterized in that the numerical value of the pressure limiting diode turn-on voltage for bistable relay operating voltage numerical value or not
More than the numerical value of 1.2 times of bistable relay operating voltages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711234109.1A CN108072784B (en) | 2017-11-30 | 2017-11-30 | Distribution lines residual voltage detection circuitry based on single pulse detects and control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711234109.1A CN108072784B (en) | 2017-11-30 | 2017-11-30 | Distribution lines residual voltage detection circuitry based on single pulse detects and control |
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| CN108072784A true CN108072784A (en) | 2018-05-25 |
| CN108072784B CN108072784B (en) | 2020-03-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470960A (en) * | 2018-11-29 | 2019-03-15 | 中航通飞华南飞机工业有限公司 | A kind of aircraft central power distribution box device for testing functions |
| CN109709374A (en) * | 2019-01-21 | 2019-05-03 | 江苏金智科技股份有限公司 | A kind of residual voltage detection circuit |
| CN109842211A (en) * | 2019-03-04 | 2019-06-04 | 石家庄科林电气股份有限公司 | A kind of residual voltage detection method of residual voltage logging modle and automatic circuit formula line feed terminals |
| CN112067876A (en) * | 2020-07-23 | 2020-12-11 | 广西电网有限责任公司电力科学研究院 | Automatic reset residual voltage pulse hardware detection circuit |
| CN112803351A (en) * | 2020-12-31 | 2021-05-14 | 常州超芯科技有限公司 | Combined residual voltage detection protection device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470960A (en) * | 2018-11-29 | 2019-03-15 | 中航通飞华南飞机工业有限公司 | A kind of aircraft central power distribution box device for testing functions |
| CN109470960B (en) * | 2018-11-29 | 2021-04-27 | 中航通飞华南飞机工业有限公司 | Aircraft central authorities block terminal functional test device |
| CN109709374A (en) * | 2019-01-21 | 2019-05-03 | 江苏金智科技股份有限公司 | A kind of residual voltage detection circuit |
| CN109709374B (en) * | 2019-01-21 | 2021-03-16 | 江苏金智科技股份有限公司 | Residual voltage detection circuit |
| CN109842211A (en) * | 2019-03-04 | 2019-06-04 | 石家庄科林电气股份有限公司 | A kind of residual voltage detection method of residual voltage logging modle and automatic circuit formula line feed terminals |
| CN112067876A (en) * | 2020-07-23 | 2020-12-11 | 广西电网有限责任公司电力科学研究院 | Automatic reset residual voltage pulse hardware detection circuit |
| CN112067876B (en) * | 2020-07-23 | 2023-05-02 | 广西电网有限责任公司电力科学研究院 | Automatic reset residual voltage pulse hardware detection circuit |
| CN112803351A (en) * | 2020-12-31 | 2021-05-14 | 常州超芯科技有限公司 | Combined residual voltage detection protection device |
| CN112803351B (en) * | 2020-12-31 | 2022-07-29 | 常州超芯科技有限公司 | Combined residual voltage detection protection device |
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| CN108072784B (en) | 2020-03-17 |
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