CN2090121U - Static votage relay - Google Patents

Static votage relay Download PDF

Info

Publication number
CN2090121U
CN2090121U CN 91205358 CN91205358U CN2090121U CN 2090121 U CN2090121 U CN 2090121U CN 91205358 CN91205358 CN 91205358 CN 91205358 U CN91205358 U CN 91205358U CN 2090121 U CN2090121 U CN 2090121U
Authority
CN
China
Prior art keywords
loop
input
output
resistance
amplifier
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.)
Withdrawn
Application number
CN 91205358
Other languages
Chinese (zh)
Inventor
池伟
杨康保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG ELECTRIC POWER TEST INST
Original Assignee
ZHEJIANG ELECTRIC POWER TEST INST
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHEJIANG ELECTRIC POWER TEST INST filed Critical ZHEJIANG ELECTRIC POWER TEST INST
Priority to CN 91205358 priority Critical patent/CN2090121U/en
Publication of CN2090121U publication Critical patent/CN2090121U/en
Withdrawn legal-status Critical Current

Links

Images

Landscapes

  • Measurement Of Current Or Voltage (AREA)

Abstract

The utility model discloses a static voltage relay which is mainly used for an electric power system, comprising an isolation sampling return circuit 1, a rectifying return circuit 3, a filtering return circuit 4, a logical judgement return circuit 6, an outlet return circuit 7, a reference door panel return circuit 5 and a direct current power supply 8. Compared with the existing voltage relay of electromagnetic type which has the defects of easy dithering, easy shedding, easy burning and inconvenient adjustment with noise, the utility model which can reduce the probability of systematic protective unwanted operation or anti-action.

Description

Static votage relay
The utility model quiescent voltage relay is a kind of protective relaying device that is mainly used in electric power system.It can be used as the action element of overvoltage protection formula low-voltage lockout, as the discriminating element of stand-by power supply auto switching, capacitor automatic switching, also can be used as voltage protection in the factory power supply system, insulating monitoring device etc.
Existing voltage relay is an electromagnetic type, and it mainly is made up of parts such as electromagnet, coil, hairspring, armature, dials.Pointer on the rotary dial can change the opplied moment of hairspring, thus the operating value of the relay of adjusting.When having electric current to pass through in the electromagnet coil, electromagnet is magnetized, and attraction armature overcomes the moment of reaction of hairspring and moves.The major defect that the voltage relay of the type exists is: relay is charged to cause contact bounce often, come off, burn to death and cause system protection malfunction or tripping; The mechanical adjustment inconvenience is as distance between the air gap between the air gap between moving plate and magnetic pole, movable contact and break, break and margining tablet etc.; Produce noise, hostile environment during operation.It is investigated notification number be the disclosed electromagnetic relay of CN2037108U also roughly the same.
It is the quiescent voltage relay that the basis constitutes with the electronic component that task of the present utility model provides a kind of, makes it to overcome the contact that existing electromagnetic type voltage relay exists and easily shakes, comes off, burns to death, adjusts inconvenience, shortcoming such as noise is arranged.
The utility model quiescent voltage relay is made up of shell and the application circuit based on electronic component that is loaded in the shell.Application circuit can become alternating current the commutating circuit of direct current output by isolation sampling circuit that can insert the output of extraneous ac voltage signal and isolated buck and the fixed value adjusting loop in order to the actuating of relay value of adjusting that can regulate output AC voltage, can improve the filter circuit of direct current ripple, can compare two input current potential height and the logic determines loop of logic output, the reference door loop of an adjustable reference DC potential can be provided for an input in logic determines loop, can form according to the outlet loop of input signal height output relay make and break contact and the dc supply of circuit.Wherein, isolating sampling circuit, fixed value adjusting loop, commutating circuit, filter circuit, logic determines loop, outlet loop connects front and back successively, or by isolating the front and back connection successively of sampling circuit, commutating circuit, filter circuit, fixed value adjusting loop, logic determines loop, outlet loop, and be connected to another input in logic determines loop with reference to the output in door loop, play the inner effect of adjusting actuating of relay door.
, the utility model quiescent voltage relay forms no alternating current contact, phenomenon, reliability height such as can not produce contact bounce during work, come off, burn to death because being the basis with the electronic component.Can not produce noise, useful environmental protection and people's working healthily yet.And utilize electronic component to replace dial in the existing electromagnetic potential relay and mechanical adjustment element relay is adjusted and to be adjusted, easy to use.
Accompanying drawing 1 is the overall frame principle figure of the utility model circuit;
Accompanying drawing 2 is the utility model embodiment 1 circuit diagram;
Accompanying drawing 3,4,5,6 is the utility model embodiment 2 circuit diagrams;
Accompanying drawing 7 is the utility model embodiment 2 panel arrangement schematic diagrames;
Following adjoint 1,2 is done embodiment 1 explanation:
Present embodiment 1 quiescent voltage relay, inner main circuit connects to form successively by isolating sampling circuit (1) and fixed value adjusting loop (2), commutating circuit (3), filter circuit (4), logic determines loop (6) outlet loop (7).And fixed value adjusting loop (2) also can arrange the back that is connected commutating circuit (3) and filter circuit (4).Secondary circuit in addition comprises one with reference to door loop (5), and its output is connected on another input in logic determines loop (6); The working power (8) that can export direct current ± 12V provides working power for each loop.Wherein: isolate sampling circuit and constitute by a step-down transformer T.Here the primary coil of transformer T connects outer signals, a termination of secondary coil zero, the follow-up loop of another termination; Fixed value adjusting loop (2) is by an integrated operational amplifier IC 1With two resistance R 3, R 4An and rheostat--fixed value adjusting potentiometer R fConstitute.Potentiometer R fThe two ends cross-over connection in amplifier IC 1Negative input end and output between.The current potential resistance R 4A termination amplifier IC 1Positive input terminal, other end connecting to neutral.Input resistance R 3An end be input, another termination amplifier IC of this fixed value adjusting loop (2) 1Negative input end; Commutating circuit (3) is made of the rectifier diode of a series connection; Filter circuit (4) is made of a shunt capacitor C; With reference to door loop (5) by a divider resistance R 16, a voltage-stabiliser tube D 17, a potentiometer Rw purchase.Here, voltage-stabiliser tube D 17Anodal connecting to neutral, negative pole passes through resistance R 16Connect the dc supply positive pole.The movable end of potentiometer Rw is connected across voltage-stabiliser tube D as this output with reference to door loop (5), two stiff ends 17The two poles of the earth on; Logic determines loop (6) is made of a unit, and this unit is by an input current-limiting resistance R 17, a computing integrated amplifier IC 5, a feedback resistance R 19, an afterflow voltage-stabiliser tube D 15Constitute.Here, resistance R 17An end be input, another termination amplifier IC of this logic determines loop (6) 5Negative input end.Voltage-stabiliser tube D 15Negative pole meet amplifier IC 5Output, the output of this loop (6) just very.Resistance R 19Cross-over connection is in amplifier IC 5Positive input terminal and output between.Amplifier IC 5Positive input termination reference gate bank loop (5); Outlet loop (7) also is made of a unit, and this unit is by an input current-limiting resistance R 21, a base potential resistance R 22, a transistor T 1, a relay J 1Constitute.Here, resistance R 21An end be input, another termination triode T of this outlet loop (7) 1Base stage.Resistance R 22A termination triode T 1Base stage, other end connecting to neutral.The collector electrode of triode passes through relay J 1Coil communicates with dc power anode.Adjustment can be adjusted the action reference potential in logic determines loop (7) with reference to the potentiometer Rw in door loop (5).Regulate the fixed value adjusting potentiometer R in the fixed value adjusting loop (2) fCan be according to the difference of system require to adjust out the operating value of this quiescent voltage relay.
This quiescent voltage relay is inserted in the relay protection control system; system just often; the alternating voltage amount that is sampled enters fixed value adjusting loop (2) through contact a, b after the transformer T input step-down of isolating sampling circuit (1) and obtains a definite value alternating voltage, becomes a direct current set value signal again and arrive amplifier IC in the logic determines loop (6) behind commutating circuit (3), filter circuit (4) rectifying and wave-filtering 5Negative input end with output to amplifier IC by reference door loop (5) 5The reference potential of positive input terminal is made comparisons, when system operation just often the sampling quantity current potential here be higher than the datum quantity current potential, logical circuit (6) is sent electronegative potential, the triode T in the outlet loop (7) 1End relay J 1Do not start.When system broke down, the sampling quantity current potential of logic determines loop (6) input just was lower than the datum quantity current potential, and logic determines loop (6) just export high potential, (7) start to make outlet loop, relay J 1Adhesive, the output make and break contact is in order to control or protection system.
Following adjoint 1,3,4,5,6,7,8 is done embodiment 2 explanations:
Embodiment 2 difference from Example 1 are: two series capacitors C in parallel on the secondary coil of the transformer T in isolating sampling circuit (1) 7, C 8Make anti-interference usefulness, double limiting voltage-stabiliser tube D in parallel 4Make the follow-up amplifier IC of protection 1With; Rheostat in fixed value adjusting loop (2) adopts by two tap thumbwheel switch K 1, K 2The resistance R of adjusting with two groups of parallel connections F1～R F10, R F11～R F20Two rheostats that constitute.Two K switch 1, K 2An end be connected to amplifier IC altogether 1Negative input end, the other end is one group of resistance of adjusting of tap separately.Every the resistance R of adjusting F1～R F20A termination open tap accordingly, and the other end is connected to amplifier IC altogether 1Output; Rectification circuit (3) is to adopt by two integrated amplifier IC as shown in Figure 3 2, IC 3With two rectifier diode D 5, D 6, seven resistance R 5～R 11, two typical full-wave rectification and 50HZ bandpass filtering loops that filter capacitor is formed.Here amplifier IC 2, IC 3And resistance R 7～R 11And diode D 5, D 6Form the full-wave rectification part.Resistance R 5, R 6With capacitor C 10, C 11Form 50HZ bandpass filtering part.During work on the alternating current of 50HZ half-wave through diode D 5Output, following half-wave is through amplifier IC 3Anti-phase back is from diode D 6Export, reach the purpose of full-wave rectification; Filter circuit (4) adopts typical active filter, as shown in Figure 3.By an integrated operational amplifier IC 4With four filtering capacitor C 14～C 17And three resistance R 12～R 14Form; Logic determines loop (6) has increased by one and column unit and one one termination amplifier IC than embodiment 1 as shown in Figure 4 5And IC 6Positive input terminal, the filter capacitor C of other end connecting to neutral 24, a single-pole double-throw switch (SPDT) S who uses when doing maintenance WSwitch S w closes to contact d during operation 2, contact d 2The output contact d of filter (3) shown in the connection layout (3) 1Out of service during maintenance, switch S w closes the voltage-stabiliser tube D in reference door loop (5) 17Positive terminal, make logic determines loop (6) constant output electronegative potential; Outlet loop (7) as Fig. 4, shown in Figure 5ly also increased by one and column unit, and at triode T than embodiment 1 1, T 2Emitter and negative DC power supply between respectively increased a light-emitting diode D 12, D 14Make panel indication usefulness, in relay J 1, J 2Two ends in parallel separately a sustained diode 11, D 13, at triode T 1, T 2Base stage and negative DC power supply between anti-interference condenser C in parallel separately 21, C 22Relay J 1, J 2Normal opened contact connect mutually to constitute and have the general export (contact e, f) of mechanical latching; Dc supply (8) is as shown in Figure 6 by two the three accurate regulator block IC of end group 7, IC 8With two dropping resistor R 1, R 25, two voltage-stabiliser tube D 1, D 2, six filter capacitor C 1～C 6, a current-limiting resistance R 2, a light-emitting diode D for panel indication usefulness 3Constitute and to export ± dc supply (8) of 12V.Dc supply (8) enchashment field 220V direct current is made the input power supply, inserts from contact g, h.If on-the-spot power supply is the 110V direct current, only need contact h, k or contact g, i short circuit are got final product.In addition, the capacitor C that is connected with each integrated operational amplifier shown in the figure 9, C 12, C 13, C 18, C 19, C 20, C 23Be anti-interference capacitor.
The embodiment 2 and the embodiment 1 of quiescent voltage relay reached the purpose of innovation and creation, and pulls out the wheel K switch owing to having adopted 1, K 2Make the fixed value adjusting switch and be arranged in (Fig. 7) on the panel; better rectification of performance and filter circuit (3), (4) have been adopted; adopted and had dual performance logic determines loop (6) outlet loop (7) of (side by side two unit); adopted the installation dimension consistent and increased that some are used to protect, the element of anti-interference, indication with existing electromagnetic type voltage relay; thereby make the utility model more convenient in installation, replacing, use, debugging, reliability is higher in the operation, performance is better.The part technical parameter that below is the utility model and existing electromagnetic type relay compares:
The utility model electromagnetic type voltage relay
Operate time＜20ms ≯ 150ms
Resetting ratio＜1.05 ≯ 1.25
Ac circuit power consumption＜0.3VA＞1VA
The setting mode numeral is pulled out the wheel switch and is changed hairspring moment
Mechanical adjustment is needs (complexity) not

Claims (6)

1, a kind of quiescent voltage relay that is mainly used in electric power system, it is characterized in that it is by the isolation sampling circuit (1) that can insert the output of extraneous ac voltage signal and isolated buck with can regulate the fixed value adjusting loop (2) of output AC voltage, alternating current can be become the commutating circuit (3) of direct current output, can improve the filter circuit (4) of direct current ripple, the logic determines loop (6) that can compare the high bottom surface logic output of two input current potentials, the reference door loop (5) of an adjustable reference DC potential can be provided for an input of logic determines loop (6), can form according to the outlet loop (7) of input signal height output relay make and break contact and the dc supply (8) of circuit, wherein, isolate sampling circuit (1), fixed value adjusting loop (2), commutating circuit (3), filter circuit (4), logic determines loop (6), outlet loop (7) front and back successively connects, or by isolating sampling circuit (1), commutating circuit (3), filter circuit (4), fixed value adjusting loop (2), logic determines loop (6), outlet loop (7) front and back successively connects, and is connected to another input in logic determines loop (6) with reference to the output of door loop (5).
2, quiescent voltage relay according to claim 1, it is characterized in that said isolation sampling circuit (1) is made of a step-down transformer T, wherein the primary coil of transformer T connects outer signals, the input in a termination of secondary coil zero, another termination fixed value adjusting loop (2).
3, quiescent voltage relay according to claim 1 and 2 is characterized in that said fixed value adjusting loop (2) is by an integrated operational amplifier IC 1With two resistance R 3, R 4And one to three rheostat formation, wherein, the two ends cross-over connection of rheostat is in amplifier IC 1Input and output between, resistance R 4A termination amplifier IC 1Positive input terminal, other end connecting to neutral current potential, resistance R 3An end be input, another termination amplifier IC of this loop (2) 1Another input.
4, quiescent voltage relay according to claim 3, it is characterized in that said with reference to door loop (5) by divider resistance R 16, voltage-stabiliser tube D 17, potentiometer Rw constitutes, wherein, voltage-stabiliser tube D 17Both positive and negative polarity pass through resistance R 16Connect the positive pole of dc supply, the movable end of potentiometer Rw is connected across voltage-stabiliser tube D as output, two stiff ends of this loop (5) 17The two poles of the earth on.
5, according to claim 1 or 2,4 described quiescent voltage relays, it is characterized in that said logic determines loop (6) is made of side by side one to three identical unit, each unit is by a current-limiting resistance, a feedback resistance, a voltage-stabiliser tube, an integrated amplifier constitutes, wherein, one end of current-limiting resistance is made an input in this loop (6), an input of another termination amplifier, the negative pole of voltage-stabiliser tube connects the output of amplifier, an anodal output as this loop (6), feedback resistance is connected across between amplifier input terminal and the output, another input of amplifier with join with reference to the output of door loop (5).
6, quiescent voltage relay according to claim 5, it is characterized in that said outlet loop (7) is made of side by side one to three identical unit, each unit is made of a current-limiting resistance, a base potential resistance, a triode, a relay, wherein, one end of current-limiting resistance joins as the base stage of input, the other end and a triode of this loop (7), one termination transistor base of base potential resistance, other end connecting to neutral, the collector electrode of triode joins by the positive pole of relay coil and dc supply.
CN 91205358 1991-04-08 1991-04-08 Static votage relay Withdrawn CN2090121U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 91205358 CN2090121U (en) 1991-04-08 1991-04-08 Static votage relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 91205358 CN2090121U (en) 1991-04-08 1991-04-08 Static votage relay

Publications (1)

Publication Number Publication Date
CN2090121U true CN2090121U (en) 1991-12-04

Family

ID=4915246

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 91205358 Withdrawn CN2090121U (en) 1991-04-08 1991-04-08 Static votage relay

Country Status (1)

Country Link
CN (1) CN2090121U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102103157B (en) * 2009-12-21 2013-11-06 艾默生网络能源系统北美公司 Direct voltage isolated sampling device
CN104348149A (en) * 2014-11-06 2015-02-11 国家电网公司 Primary side neutral point ground control system for 10kV potential transformer (PT)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102103157B (en) * 2009-12-21 2013-11-06 艾默生网络能源系统北美公司 Direct voltage isolated sampling device
CN104348149A (en) * 2014-11-06 2015-02-11 国家电网公司 Primary side neutral point ground control system for 10kV potential transformer (PT)
CN104348149B (en) * 2014-11-06 2017-10-24 国家电网公司 A kind of 10kV voltage transformers primary side neutral ground control system

Similar Documents

Publication Publication Date Title
CN105244997A (en) Double power switching device for acquisition terminal
CN2090121U (en) Static votage relay
US9124087B2 (en) Arc suppression circuit
US2997631A (en) Non-linear time delay circuit and relay
CN207410108U (en) A kind of main secondary power switching circuit
US4687985A (en) Two terminal control switch having a main switch and a saturable current transformer whose primary winding is series connected with the main switch
CN107733073A (en) A kind of main secondary power switching circuit
CN2225102Y (en) Ground compensator of automatic tracking and regulating arc-extinguishing coil
Justin et al. Protection of a Disturbed Electric Network Using a Solid State Protective Relay
CN2469544Y (en) Intelligence magnetic memory AC contactor
CN2129484Y (en) Power factor automatic compensater
CN2171942Y (en) Loss of phase overload protector for multi-capacity electrical machinery
CN115534708B (en) Control circuit of ground alternating-current charging pile and alternating-current charging pile
CN2439054Y (en) Direct-through type electronic AC voltage stablizer
JPS5934828Y2 (en) Temperature detection device for separate air conditioners
CN220884070U (en) State detection circuit compatible with direct current charging standard and charging equipment
CN2313228Y (en) Automatic changing-over device for electric-energy meters of different measurement range
CN2244260Y (en) Phase-interruption and overload protective device for three-phase ac motor
CN2311874Y (en) Automatic regulating load apparatus
CN2161948Y (en) Energy-saving protective type low voltage AC manostat
CN2181084Y (en) AC and dc electric magnet operation controlling box
CN2086469U (en) Domestic comprehensive protecting switch for leakage of electricity
CN110061508A (en) A kind of energy-saving bypass stepless voltage regulator of low energy consumption
CN2175983Y (en) Protecting starter of single-wire motor
CN2562347Y (en) Phase-off and leakage circuit breaker

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee