CN105676009A - Three-phase type ring network cabinet secondary phase checking device, and phase checking method thereof - Google Patents
Three-phase type ring network cabinet secondary phase checking device, and phase checking method thereof Download PDFInfo
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- CN105676009A CN105676009A CN201610173853.4A CN201610173853A CN105676009A CN 105676009 A CN105676009 A CN 105676009A CN 201610173853 A CN201610173853 A CN 201610173853A CN 105676009 A CN105676009 A CN 105676009A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
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Abstract
Provided is a three-phase type ring network cabinet secondary phase checking device, comprising a phase checking device housing, LED indicating lamps, a switch and contacts. The phase checking device housing is a square three-dimensional structure; the contacts comprise contact A1, contact B1, contact C1, contact A2, contact B2, and contact C2; the LED indicating lamps comprise lamp L1, lamp L2, lamp L3, lamp L4, lamp L5, and lamp L6; the LED indicating lamps are arranged on the front surface of the phase checking device housing in two rows and three columns; one side of the phase checking device housing is provided with the contact A1, contact B1, and contact C1, and the other side of the phase checking device housing is provided with the contact A2, contact B2, and contact C2; the phase checking device housing is internally provided with a phase checking device which is in connection with the contacts, the switch and the LED lamps. The invention also discloses a phase checking method utilizing the three-phase type ring network cabinet secondary phase checking device. The device and method can directly observe which phase breaks down, enhance phase checking accuracy, and greatly simplify operation.
Description
Technical field
The present invention relates to power system distribution engineering technical field, specifically a kind of three-phase type looped networkCabinet secondary phasing tester and nuclear-phase method thereof.
Background technology
Nuclear phase refers to two-way power supply or loop in power system is carried out to checking and approving of phase sequence, to guarantee complete setSystem three-phase phase-sequence is unified. The harm of phase sequence mistake is serious, when paired running, can cause serious short circuitAccident, will burn transformer, also can cause that motor reversal, electrical equipment damage, gauge table metering simultaneouslyThe serious consequences such as inefficacy. Therefore, the relevant operational management of power system requires clearly regulation, all relating toNewly-built, renovating and enlarging or the circuit that changes and change (joining) electricity work, necessary after end-of-jobCarry out nuclear phase.
According to nuclear phase position difference, be divided into nuclear phase and secondary nuclear phase. A nuclear phase is to use nuclear phaseDevice directly contacts exposed primary side conductor, and a signal is carried out to nuclear phase; Secondary nuclear phase is to utilize PTA signal being converted to after the secondary singal of low pressure, secondary singal is carried out to nuclear phase, is indirectly a kind ofNuclear phase. Therefore, also corresponding phasing tester and the secondary phasing tester of being divided into of phasing tester. Obviously, byThere is no bare spots in cable, so relate to the work of cable, can only carry out secondary core at ring main unit placePhase.
Existing ring main unit secondary phasing tester is all single-phase type, and it only has two contacts, when nuclear phase,Two contacts insert respectively in the nuclear phase jack of two-way power supply, and whether phasing tester will indicate this two-phaseHomophase, will carry out altogether 9 nuclear phase operations and just can obtain a result. It can be divided into two kinds: Yi ZhongyouSource formula, it first by secondary singal through A/D conversion, then calculate phase difference to each other and realize and sentencingDisconnected, this equipment manufacturing cost is higher, and on-the-spot use is less; Another kind is passive type, two contactsBetween the indicator lamp of connecting, if both sides phase place is incorrect, between them, just have voltage difference, lamp justCan be lit. If instead correct, lamp just can not be lit, and because operation principle is simple, cost is low,Accuracy rate is also higher, and the most frequently used in using so on-the-spot is exactly the secondary phasing tester of this passive type.
Summary of the invention
The object of the present invention is to provide a kind of three-phase type ring main unit secondary phasing tester and nuclear-phase method thereof,Be used for solving prior art nuclear phase complex operation, easily occur nuclear phase mistake, cause a serious accidentProblem.
The present invention solves the technical scheme that its technical problem takes: a kind of three-phase type ring main unit secondaryPhasing tester, is characterized in that, comprises phasing tester housing, LED light, contact and switch; Described nuclear phaseDevice housing is a square cubic structure, described contact comprise A1 contact, B1 contact, C1 contact,A2 contact, B2 contact and C2 contact, described LED light comprise lamp L1, lamp L2, lamp L3,Lamp L4, lamp L5 and lamp L6; Described LED light is two row three and is listed as and is arranged on phasing tester housingFront, be provided with A1 contact, B1 contact and C1 contact in a side of described phasing tester housing,Be provided with A2 contact, B2 contact and C2 contact in another side of phasing tester housing; At phasing testerIn housing, be provided with phase checking device, described phase checking device is connected with contact, switch and LED lamp respectively.
Further, described switch comprises three interlock hand switches, three described interlock hand switchesOne end be connected with A1 contact, B1 contact and C1 contact respectively, three interlock hand switches the other endBe connected with one end of phase checking device, the other end of described phase checking device respectively with A2 contact, B2 contact andC2 contact is connected.
Further, described phase checking device comprises resistance R 1, relay K M1, relay K M2, continuesElectrical equipment KM3 and relay K M4; Described phase checking device has formed relay coil loop and relay touchesPoint loop.
Further, the concrete structure in described relay coil loop is:
One end of the coil k1 of described relay K M1 is connected with A1 contact, the other end of coil k1 withA2 contact is connected, and one end of the coil k2 of described relay K M2 is connected with B1 contact, coil k2'sThe other end is connected with B2 contact, and one end of the coil k3 of described relay K M3 is connected with C1 contact,The other end of coil k3 is connected with C2 contact, one end and the A1 of the coil k4 of described relay K M4Contact is connected, and the other end of coil k4 is connected with B2 contact.
Further, the concrete structure in described relay contact loop is:
One end of described resistance R 1 is connected with A1 contact, the other end of described resistance R 1 respectively with continueOne end of the normally-closed contact k1-1 of electrical equipment KM1, one end of normally opened contact k1-2, normally opened contact k1-3One end of one end, normally opened contact k1-5 of one end, normally-closed contact k1-4 and normally opened contact k1-6One end is connected;
The other end of the normally-closed contact k1-1 of described relay K M1 and the normally-closed contact of relay K M2One end of k2-1 is connected, and the other end of the normally-closed contact k2-1 of relay K M2 and relay K M3's is normalOne end of closed contact k3-1 is connected, the other end of the normally-closed contact k3-1 of relay K M3 and lamp L1'sOne end is connected, and the other end of lamp L1 is connected with B1 contact;
The other end of the normally opened contact k1-2 of described relay K M1 and the normally opened contact of relay K M2One end of k2-2 is connected, and the other end of the normally opened contact k2-2 of relay K M2 and relay K M3's is normalOne end of closed contact k3-2 is connected, the other end of the normally-closed contact k3-2 of relay K M3 and lamp L2'sOne end is connected, and the other end of lamp L2 is connected with B1 contact;
The other end of the normally opened contact k1-3 of described relay K M1 and the normally-closed contact of relay K M2One end of k2-3 is connected, and the other end of the normally-closed contact k2-3 of relay K M2 and relay K M3's is normalThe one end of opening contact k3-3 is connected, the other end of the normally opened contact k3-3 of relay K M3 and lamp L3'sOne end is connected, and the other end of lamp L3 is connected with B1 contact;
The other end of the normally-closed contact k1-4 of described relay K M1 and the normally opened contact of relay K M2One end of k2-4 is connected, and the other end of the normally opened contact k2-4 of relay K M2 and relay K M3's is normalThe one end of opening contact k3-4 is connected, the other end of the normally opened contact k3-4 of relay K M3 and lamp L4'sOne end is connected, and the other end of lamp L4 is connected with B1 contact;
The other end of the normally opened contact k1-5 of described relay K M1 and the normally opened contact of relay K M2One end of k2-5 is connected, and the other end of the normally opened contact k2-5 of relay K M2 and relay K M3's is normalThe one end of opening contact k3-5 is connected, the other end and the relay of the normally opened contact k3-5 of relay K M3One end of the normally opened contact k4-1 of KM4 is connected, the other end of the normally opened contact k4-1 of KM4 and lamp L5One end be connected, the other end of lamp L5 is connected with B1 contact;
The other end of the normally opened contact k1-6 of described relay K M1 and the normally opened contact of relay K M2One end of k2-6 is connected, and the other end of the normally opened contact k2-6 of relay K M2 and relay K M3's is normalThe one end of opening contact k3-6 is connected, the other end and the relay of the normally opened contact k3-6 of relay K M3One end of the normally-closed contact k4-2 of KM4 is connected, the other end of the normally-closed contact k4-2 of KM4 and lamp L6One end be connected, the other end of lamp L6 is connected with B1 contact.
A nuclear-phase method that utilizes three-phase type ring main unit secondary phasing tester, is characterized in that, specifically comprisesFollowing steps:
Step 1), by three contacts of a certain side of three-phase type ring main unit secondary phasing tester respectively with a certain roadThree phase mains be connected, three contacts of three-phase type ring main unit secondary phasing tester opposite side respectively with anotherThe three phase mains on road is connected;
Step 2), open switch, the three phase mains on a certain road is by three-phase type ring main unit secondary phasing testerIn phase checking device be connected with the three phase mains on another road, phase checking device carries out nuclear phase;
Step 3) if the equal no-voltage in the both sides of relay K 1, K2, K3, corresponding normally-closed contactK1-1, k2-1 and k3-1 continue closed, only have L1 lamp to be lit, and all the other lamps are not lit,Represent that two-way power phase is entirely true;
Step 4) if relay K 1 and relay K 2 are switched on, relay K 3 is not switched on,Corresponding normally opened contact k1-2 and k2-2 closure, normally-closed contact k3-2 is still closed, only has L2 lampBe lit, all the other lamps are not lit, and represent that the A phase of two-way power supply and B join instead;
Step 5) if relay K 1 and relay K 3 are switched on, relay K 2 is not switched on,Corresponding normally opened contact k1-3 and k3-3 closure, normally-closed contact k2-3 is still closed, only has L3 lampBe lit, all the other lamps are not lit, and represent that the A phase of two-way power supply and C join instead;
Step 6) if relay K 2 and relay K 3 are switched on, relay K 1 is not switched on,Corresponding normally opened contact k2-4 and k3-4 closure, normally-closed contact k1-4 is still closed, only has L4 lampBe lit, all the other lamps are not lit, and represent that the B phase of two-way power supply and C join instead;
Step 7) if relay K 1, relay K 2, relay K 3 and relay K 4 are all ledLogical, normally opened contact k1-5, k2-5, k3-5 and k4-1 closure, only has L5 lamp to be lit, all the otherLamp is not lit, and represents that two-way power supply A phase, B phase and C forward connect mutually anti-;
Step 8) if relay K 1, relay K 2, relay K 3 are switched on, relay K 4Be not switched on, normally opened contact k1-6, k2-6, k3-6 closure, normally-closed contact k4-2 is still closed,Only have L6 lamp to be lit, all the other lamps are not lit, and represent A phase, B phase and the C of two-way power supplyContrary is anti-to connecing.
The invention has the beneficial effects as follows: a kind of three-phase type ring main unit secondary phasing tester provided by the invention,Utilize three relays and a resistance, formed a three-phase phase checking device; Once-through operation just canWhether the phase sequence that checks three-phase is wrong, by observing and just can obtain and original theory (intuitivelyWhen phase difference between the A phase of road three phase mains and the A of another road three phase mains phase is not more than 30 °,The voltage magnitude of Ji Yi road three phase mains A phase be another road three phase mains A phase voltage amplitude 0.518Doubly, represent two-phase homophase, otherwise two-phase out-phase; B phase and C are mutually in like manner. ) identical result, the utmost pointOperation that the earth is easy, has saved a large amount of time, and has avoided the generation of mistake in computation. ThisInvention is also provided with five LED lamps phase sequence mistake is reported to the police and a correct LED light of phase sequenceLamp is reported to the police to phase sequence mistake, and can observe is intuitively which phase sequence makes a mistake, and has increasedThe accuracy rate of nuclear phase, greatly easy operation.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is relay coil loop circuit figure of the present invention;
Fig. 3 is relay contact loop circuit figure of the present invention;
In figure: 1, phasing tester housing, 2, phase checking device, 3, switch.
Detailed description of the invention
If Fig. 1 is to as shown in Figure 3, the present invention includes phasing tester housing 1, LED light, switch 3And contact. As shown in Figure 1, phasing tester housing 1 is a square cubic structure, contact comprise A1 contact,B1 contact, C1 contact, A2 contact, B2 contact and C2 contact, LED light comprises lamp L1, lampL2, lamp L3, lamp L4, lamp L5 and lamp L6; Six LED lights are two row three and are listed as and are arranged on coreThe front of phase device housing 1, be provided with in a side of phasing tester housing 1 A1 contact, B1 contact andC1 contact, is provided with A2 contact, B2 contact and C2 contact in another side of phasing tester housing 1.In phasing tester housing, be provided with phase checking device 2, phase checking device 2 phase checking devices respectively with contact, switchBe connected with LED lamp.
Switch comprises three interlock hand switches, three interlock hand switches one end respectively with A1 contact, B1Contact is connected with C1 contact, and the three interlock other ends of hand switch and one end of phase checking device are connected, coreThe other end of device is connected with A2 contact, B2 contact and C2 contact respectively mutually.
Phase checking device 2 comprises resistance R 1, relay K M1, relay K M2, relay K M3 and relayDevice KM4; Phase checking device has formed relay coil loop and relay contact loop.
As shown in Figure 2, the concrete structure in relay coil loop is:
One end of the coil k1 of relay K M1 is connected with A1 contact, the other end of coil k1 and A2Contact is connected, and one end of the coil k2 of relay K M2 is connected with B1 contact, the other end of coil k2Be connected with B2 contact, one end of the coil k3 of relay K M3 is connected with C1 contact, coil k3'sThe other end is connected with C2 contact, and one end of the coil k4 of relay K M4 is connected with A1 contact, coilThe other end of k4 is connected with B2 contact.
As shown in Figure 3, the concrete structure in relay contact loop is:
One end of resistance R 1 is connected with A1 contact, and the other end of resistance R 1 is respectively with relay K M1'sOne end of one end of normally-closed contact k1-1, one end of normally opened contact k1-2, normally opened contact k1-3, normalOne end of closed contact k1-4, one end of normally opened contact k1-5 are connected with one end of normally opened contact k1-6;R1 is protective resistance, prevents because of the excessive LED of the burning out lamp of voltage.
The other end of the normally-closed contact k1-1 of relay K M1 and the normally-closed contact k2-1 of relay K M2One end be connected, the other end of the normally-closed contact k2-1 of relay K M2 and relay K M3's is normally closed tactileOne end of point k3-1 is connected, the other end of the normally-closed contact k3-1 of relay K M3 and one end of lamp L1Be connected, the other end of lamp L1 is connected with B1 contact;
The other end of the normally opened contact k1-2 of relay K M1 and the normally opened contact k2-2 of relay K M2One end be connected, the other end of the normally opened contact k2-2 of relay K M2 and relay K M3's is normally closed tactileOne end of point k3-2 is connected, the other end of the normally-closed contact k3-2 of relay K M3 and one end of lamp L2Be connected, the other end of lamp L2 is connected with B1 contact;
The other end of the normally opened contact k1-3 of relay K M1 and the normally-closed contact k2-3 of relay K M2One end be connected, often opening of the other end of the normally-closed contact k2-3 of relay K M2 and relay K M3 is tactileOne end of point k3-3 is connected, the other end of the normally opened contact k3-3 of relay K M3 and one end of lamp L3Be connected, the other end of lamp L3 is connected with B1 contact;
The other end of the normally-closed contact k1-4 of relay K M1 and the normally opened contact k2-4 of relay K M2One end be connected, often opening of the other end of the normally opened contact k2-4 of relay K M2 and relay K M3 is tactileOne end of point k3-4 is connected, the other end of the normally opened contact k3-4 of relay K M3 and one end of lamp L4Be connected, the other end of lamp L4 is connected with B1 contact;
The other end of the normally opened contact k1-5 of relay K M1 and the normally opened contact k2-5 of relay K M2One end be connected, often opening of the other end of the normally opened contact k2-5 of relay K M2 and relay K M3 is tactileOne end of point k3-5 is connected, the other end of the normally opened contact k3-5 of relay K M3 and relay K M4Normally opened contact k4-1 one end be connected, one of the other end of the normally opened contact k4-1 of KM4 and lamp L5End is connected, and the other end of lamp L5 is connected with B1 contact;
The other end of the normally opened contact k1-6 of relay K M1 and the normally opened contact k2-6 of relay K M2One end be connected, often opening of the other end of the normally opened contact k2-6 of relay K M2 and relay K M3 is tactileOne end of point k3-6 is connected, the other end of the normally opened contact k3-6 of relay K M3 and relay K M4Normally-closed contact k4-2 one end be connected, one of the other end of the normally-closed contact k4-2 of KM4 and lamp L6End is connected, and the other end of lamp L6 is connected with B1 contact.
Because transformer is different from the design of switch cubicle, and other a variety of causes, easily occurThe phase sequence mistake of three phase mains, causes significant impact.
A nuclear-phase method that utilizes three-phase type ring main unit secondary phasing tester, specifically comprises the following steps:
Step 1), by three contacts of a certain side of three-phase type ring main unit secondary phasing tester respectively with a certain roadThree phase mains be connected, three contacts of three-phase type ring main unit secondary phasing tester opposite side respectively with anotherThe three phase mains on road is connected;
Step 2), open switch, the three phase mains on a certain road is by three-phase type ring main unit secondary phasing testerIn phase checking device be connected with the three phase mains on another road, phase checking device carries out nuclear phase;
Step 3) if the equal no-voltage in the both sides of relay K 1, K2, K3, corresponding normally-closed contactK1-1, k2-1 and k3-1 continue closed, only have L1 lamp to be lit, and all the other lamps are not lit,Represent that two-way power phase is entirely true;
Step 4) if relay K 1 and relay K 2 are switched on, relay K 3 is not switched on,Corresponding normally opened contact k1-2 and k2-2 closure, normally-closed contact k3-2 is still closed, only has L2 lampBe lit, all the other lamps are not lit, and represent that the A phase of two-way power supply and B join instead;
Step 5) if relay K 1 and relay K 3 are switched on, relay K 2 is not switched on,Corresponding normally opened contact k1-3 and k3-3 closure, normally-closed contact k2-3 is still closed, only has L3 lampBe lit, all the other lamps are not lit, and represent that the A phase of two-way power supply and C join instead;
Step 6) if relay K 2 and relay K 3 are switched on, relay K 1 is not switched on,Corresponding normally opened contact k2-4 and k3-4 closure, normally-closed contact k1-4 is still closed, only has L4 lampBe lit, all the other lamps are not lit, and represent that the B phase of two-way power supply and C join instead;
Step 7) if relay K 1, relay K 2, relay K 3 and relay K 4 are all ledLogical, normally opened contact k1-5, k2-5, k3-5 and k4-1 closure, only has L5 lamp to be lit, all the otherLamp is not lit, and represents that two-way power supply A phase, B phase and C forward connect mutually anti-;
Step 8) if relay K 1, relay K 2, relay K 3 are switched on, relay K 4Be not switched on, normally opened contact k1-6, k2-6, k3-6 closure, normally-closed contact k4-2 is still closed,Only have L6 lamp to be lit, all the other lamps are not lit, and represent A phase, B phase and the C of two-way power supplyContrary is anti-to connecing.
As shown in table 1, exhaustive all nuclear phase situations, in table, A1, B1, C1 represent a road power supplyThree-phase, A2, B2, C2 represent the three-phase of another road power supply. Nuclear phase result one has 6 kinds, except 1Kind of situation phase sequence correctly outside, the phase sequence of all the other 5 kinds of situations is all wrong. When certain specific wiring occursWhen mode, corresponding indicator lamp will light, well-known staff's nuclear phase result of telling.
If two-way power phase is entirely true, the equal no-voltage in both sides of relay coil k1, k2, k3,Corresponding normally-closed contact k1-1, k2-1 and k3-1 continue closed, and L1 lamp is lit, and all the other lamps can notBe lit.
If the A phase of two-way power supply and B join instead, relay coil k1, k2 will be switched on, correspondingNormally opened contact k1-2 and k2-2 closure, L2 lamp is lit; AC joins instead, BC joins anti-situation therewithSimilar, be not repeated.
If two-way power supply A phase, B phase and C phase three-phase all connect instead, relay coil k1, k2, k3All will be switched on, corresponding normally opened contact is all closed. Due to three-phase connect completely counter have forward connect anti-and anti-To connecing anti-two kinds of situations, therefore also need to add relay K 4 to judge. If forward connect anti-relayThe coil k4 two ends of K4 connect A1 phase and B2 phase, and coil k4 is switched on, normally opened contact k4-1 closure,L5 lamp is lit; Otherwise, connect as reverse anti-, the coil k4 two ends of relay K 4 connect A1 phase andA2 phase, coil k4 can not be switched on, and normally-closed contact k4-2 is still closed, and L6 lamp is lit.
Although the alternate coil k4 by relay of A1 phase and B1 and k2 are communicated with, suitable by selectingRelay model, can make these two relays of voltage difference that A1 phase and B1 are alternate conducting simultaneously.In like manner, A2 phase and B2 are alternate can not be switched on, and has realized and has detected the whether correct effect of phase sequence.
Table 1
Be more than specific embodiments of the invention, do not limit the scope of the invention, do not changingBecome under principle of the present invention, the various distortion that those of ordinary skill in the art done on this basis orBe equal to replacement, all in protection scope of the present invention.
Claims (6)
1. a three-phase type ring main unit secondary phasing tester, is characterized in that, comprises phasing tester housing, LEDIndicator lamp, contact and switch; Described phasing tester housing is a square cubic structure, described contact bagDraw together A1 contact, B1 contact, C1 contact, A2 contact, B2 contact and C2 contact, described LEDIndicator lamp comprises lamp L1, lamp L2, lamp L3, lamp L4, lamp L5 and lamp L6; Described LED lightBe two row three and be listed as the front that is arranged on phasing tester housing, establish in a side of described phasing tester housingBe equipped with A1 contact, B1 contact and C1 contact, be provided with A2 in another side of phasing tester housing and touchHead, B2 contact and C2 contact; In phasing tester housing, be provided with phase checking device, described phase checking deviceBe connected with contact, switch and LED lamp respectively.
2. a kind of three-phase type ring main unit secondary phasing tester according to claim 1, is characterized in that,Described switch comprises three interlock hand switches, one end of described three interlock hand switches respectively with A1Contact, B1 contact and C1 contact are connected, the three interlock other end of hand switch and one end of phase checking deviceBe connected, the other end of described phase checking device is connected with A2 contact, B2 contact and C2 contact respectively.
3. a kind of three-phase type ring main unit secondary phasing tester according to claim 2, is characterized in that,Described phase checking device comprises resistance R 1, relay K M1, relay K M2, relay K M3 and relayDevice KM4; Described phase checking device comprises relay coil loop and relay contact loop.
4. a kind of three-phase type ring main unit secondary phasing tester according to claim 3, is characterized in that,The concrete structure in described relay coil loop is:
One end of the coil k1 of described relay K M1 is connected with A1 contact, the other end of coil k1 withA2 contact is connected, and one end of the coil k2 of described relay K M2 is connected with B1 contact, coil k2'sThe other end is connected with B2 contact, and one end of the coil k3 of described relay K M3 is connected with C1 contact,The other end of coil k3 is connected with C2 contact, one end and the A1 of the coil k4 of described relay K M4Contact is connected, and the other end of coil k4 is connected with B2 contact.
5. a kind of three-phase type ring main unit secondary phasing tester according to claim 3, is characterized in that,The concrete structure in described relay contact loop is:
One end of described resistance R 1 is connected with A1 contact, the other end of described resistance R 1 respectively with continueOne end of the normally-closed contact k1-1 of electrical equipment KM1, one end of normally opened contact k1-2, normally opened contact k1-3One end of one end, normally opened contact k1-5 of one end, normally-closed contact k1-4 and normally opened contact k1-6One end is connected;
The other end of the normally-closed contact k1-1 of described relay K M1 and the normally-closed contact of relay K M2One end of k2-1 is connected, and the other end of the normally-closed contact k2-1 of relay K M2 and relay K M3's is normalOne end of closed contact k3-1 is connected, the other end of the normally-closed contact k3-1 of relay K M3 and lamp L1'sOne end is connected, and the other end of lamp L1 is connected with B1 contact;
The other end of the normally opened contact k1-2 of described relay K M1 and the normally opened contact of relay K M2One end of k2-2 is connected, and the other end of the normally opened contact k2-2 of relay K M2 and relay K M3's is normalOne end of closed contact k3-2 is connected, the other end of the normally-closed contact k3-2 of relay K M3 and lamp L2'sOne end is connected, and the other end of lamp L2 is connected with B1 contact;
The other end of the normally opened contact k1-3 of described relay K M1 and the normally-closed contact of relay K M2One end of k2-3 is connected, and the other end of the normally-closed contact k2-3 of relay K M2 and relay K M3's is normalThe one end of opening contact k3-3 is connected, the other end of the normally opened contact k3-3 of relay K M3 and lamp L3'sOne end is connected, and the other end of lamp L3 is connected with B1 contact;
The other end of the normally-closed contact k1-4 of described relay K M1 and the normally opened contact of relay K M2One end of k2-4 is connected, and the other end of the normally opened contact k2-4 of relay K M2 and relay K M3's is normalThe one end of opening contact k3-4 is connected, the other end of the normally opened contact k3-4 of relay K M3 and lamp L4'sOne end is connected, and the other end of lamp L4 is connected with B1 contact;
The other end of the normally opened contact k1-5 of described relay K M1 and the normally opened contact of relay K M2One end of k2-5 is connected, and the other end of the normally opened contact k2-5 of relay K M2 and relay K M3's is normalThe one end of opening contact k3-5 is connected, the other end and the relay of the normally opened contact k3-5 of relay K M3One end of the normally opened contact k4-1 of KM4 is connected, the other end of the normally opened contact k4-1 of KM4 and lamp L5One end be connected, the other end of lamp L5 is connected with B1 contact;
The other end of the normally opened contact k1-6 of described relay K M1 and the normally opened contact of relay K M2One end of k2-6 is connected, and the other end of the normally opened contact k2-6 of relay K M2 and relay K M3's is normalThe one end of opening contact k3-6 is connected, the other end and the relay of the normally opened contact k3-6 of relay K M3One end of the normally-closed contact k4-2 of KM4 is connected, the other end of the normally-closed contact k4-2 of KM4 and lamp L6One end be connected, the other end of lamp L6 is connected with B1 contact.
6. a nuclear-phase method that utilizes three-phase type ring main unit secondary phasing tester, is characterized in that, specifically bagDraw together following steps:
Step 1), by three contacts of a certain side of three-phase type ring main unit secondary phasing tester respectively with a certain roadThree phase mains be connected, three contacts of three-phase type ring main unit secondary phasing tester opposite side respectively with anotherThe three phase mains on road is connected;
Step 2), open switch, the three phase mains on a certain road is by three-phase type ring main unit secondary phasing testerIn phase checking device be connected with the three phase mains on another road, phase checking device carries out nuclear phase;
Step 3) if the equal no-voltage in the both sides of relay K 1, K2, K3, corresponding normally-closed contactK1-1, k2-1 and k3-1 continue closed, only have L1 lamp to be lit, and all the other lamps are not lit,Represent that two-way power phase is entirely true;
Step 4) if relay K 1 and relay K 2 are switched on, relay K 3 is not switched on,Corresponding normally opened contact k1-2 and k2-2 closure, normally-closed contact k3-2 is still closed, only has L2 lampBe lit, all the other lamps are not lit, and represent that the A phase of two-way power supply and B join instead;
Step 5) if relay K 1 and relay K 3 are switched on, relay K 2 is not switched on,Corresponding normally opened contact k1-3 and k3-3 closure, normally-closed contact k2-3 is still closed, only has L3 lampBe lit, all the other lamps are not lit, and represent that the A phase of two-way power supply and C join instead;
Step 6) if relay K 2 and relay K 3 are switched on, relay K 1 is not switched on,Corresponding normally opened contact k2-4 and k3-4 closure, normally-closed contact k1-4 is still closed, only has L4 lampBe lit, all the other lamps are not lit, and represent that the B phase of two-way power supply and C join instead;
Step 7) if relay K 1, relay K 2, relay K 3 and relay K 4 are all ledLogical, normally opened contact k1-5, k2-5, k3-5 and k4-1 closure, only has L5 lamp to be lit, all the otherLamp is not lit, and represents that two-way power supply A phase, B phase and C forward connect mutually anti-;
Step 8) if relay K 1, relay K 2, relay K 3 are switched on, relay K 4Be not switched on, normally opened contact k1-6, k2-6, k3-6 closure, normally-closed contact k4-2 is still closed,Only have L6 lamp to be lit, all the other lamps are not lit, and represent A phase, B phase and the C of two-way power supplyContrary is anti-to connecing.
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| CN108196139A (en) * | 2018-01-19 | 2018-06-22 | 山东钢铁集团日照有限公司 | A kind of grid-connected nuclear-phase method of small power generation unit |
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| CN105676009B (en) | 2018-11-27 |
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