CN106768954B - Multifunctional mechanical characteristic test bed for 6kV medium-voltage contactor - Google Patents
Multifunctional mechanical characteristic test bed for 6kV medium-voltage contactor Download PDFInfo
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- CN106768954B CN106768954B CN201611233196.4A CN201611233196A CN106768954B CN 106768954 B CN106768954 B CN 106768954B CN 201611233196 A CN201611233196 A CN 201611233196A CN 106768954 B CN106768954 B CN 106768954B
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Abstract
The invention belongs to the technical field of nuclear power station equipment overhaul, and particularly relates to a multifunctional mechanical characteristic test bed of a 6kV medium-voltage contactor, which aims to develop a multifunctional mechanical characteristic test bed of a 6kV medium-voltage contactor, and can integrate all the previous redundant test wires into the test bed; four types of connection modes of the 6kV medium-voltage contactor are fused in the test bed, and the connection switching of various circuits can be controlled and realized only through the operation table; the signal lamp of the test bed can feed back the switching-on and switching-off conditions of the contactor and the relay, so that a remote monitoring function is realized; the test is convenient for measuring the opening and closing characteristics of the 6kV medium-voltage contactor. According to the multifunctional mechanical characteristic test stand, wiring switching of four types of contactor tests can be realized only through the switching button, and the switching-on/off characteristic instrument can be connected to measure the switching-on/off time of the 6kV medium-voltage contactor, so that errors in wiring replacement can be well avoided, and the original test time of about 2 hours is shortened to be within 15 minutes.
Description
Technical Field
The invention belongs to the technical field of nuclear power station equipment overhaul, and particularly relates to a multifunctional mechanical characteristic test bed for a 6kV medium-voltage contactor.
Background
The 6kV medium-voltage contactor is the most main equipment of medium-voltage distribution in a nuclear power plant and is also core equipment of a power supply unit in a power plant system. The number of the 6kV medium-voltage contactors of the Qin two-factory 3 and 4-machine set is more (150 stations in the whole factory), and the models are also more: there are four types of VSC type (mechanical hold, electrical hold) and V7 type (mechanical hold, electrical hold). When overhauling and daily maintenance are carried out each year, annual inspection is needed on different types of contactors of a plurality of buses, and as the number of contactors needing annual inspection is large, wiring is required to be changed according to different models in the test, the wiring is tedious, great waste is caused to manpower, and the wiring of tension personnel in the overhauling period is easy to make mistakes. Based on the above, an operation table for experimental wiring conversion is particularly urgent, and based on the operation table, the multifunctional mechanical characteristic test table for the 6kV medium-voltage contactor is invented, and the test table not only can be used for testing the action characteristic of an operation mechanism of the contactor, but also provides convenience for testing the opening and closing characteristic of the contactor.
Disclosure of Invention
The invention aims to develop a multifunctional mechanical characteristic test bed of a 6kV medium-voltage contactor, and the traditional redundant test wires can be integrated into the test bed; four types of wiring modes are fused in the test bed, and wiring switching of various circuits can be controlled and realized only through the operation table; the signal lamp of the test bed can feed back the switching-on and switching-off conditions of the 6kV medium-voltage contactor and the relay, so that a remote monitoring function is realized; the method is convenient for the test of measuring the opening and closing characteristics of the medium-voltage contactor.
The invention is realized in the following way:
a multifunctional mechanical characteristic test bed for a 6kV medium-voltage contactor is characterized in that: an opening and closing characteristic instrument interface and a 110V power supply inlet wire interface are arranged on the test bed; the switching-on interface of the switching-off characteristic instrument interface is respectively connected with a node 4 of a switching-on button LA1, a node 1 of an electric and mechanical switching relay K4, nodes 5 and V7 of the switching-on relay K1 and a node 6 and a node 4 of a switching relay K3 of a VSC type 6kV medium voltage contactor; the opening interface of the opening and closing characteristic instrument interface is respectively connected with a node 4 of an opening button LA2, a node 2 of a switching relay K4 of an electric and mechanical 6kV medium voltage contactor and a node 11 of a 6kV medium voltage contactor body; the positive pole of the 110V power inlet wire interface is respectively connected with a node 32 of a switching-off contactor K2, a node 3 of a switching-off button LA2, a node 12 of a switching-on relay K1, a node 23 of a 6kV medium voltage contactor body switching-on auxiliary node BB2, a node 16 of a 6kV medium voltage contactor body switching-off auxiliary node BB1, one end of a power indicator HD, 11 of a V7 and VSC type 6kV medium voltage contactor switching button LA3, 23 of an electric and mechanical type 6kV medium voltage contactor switching button LA4, and a node 8 of a V7 and VSC type 6kV medium voltage contactor switching relay K3 through a power switch QF; the negative electrode of the 110V power inlet wire interface is respectively connected with a coil 13 of a switching-on relay K1, one end of a relay switching-on indicator lamp JD1, one end of a relay switching-off indicator lamp JD2, a coil A2 of a switching-off contactor K2, one end of a 6kV medium voltage contactor body switching-on indicator lamp LD, one end of a 6kV medium voltage contactor body switching-off indicator lamp YD, the other end of a power indicator lamp HD, a coil 13 and a node 5 of a V7 and VSC type 6kV medium voltage contactor switching relay K3, a coil 13 and a node 12 of an electric and mechanical switching relay K4 and a node 15 of a 6kV medium voltage contactor body through a power switch QF;
the node 31 of the opening contactor K2 is connected with the node 3 of the closing button LA1 and the node 9 of the closing relay K1; the node 9 of the electric and mechanical conversion relay K4 is connected with the coil 14 of the closing relay K1; the node 8 of the switching-on relay K1 is connected with the other end of the relay switching-on indicator lamp JD 1; the node 4 of the closing relay K1 is connected with the other end of the relay opening indicator lamp JD 2; the node 10 of the electrical and mechanical switching relay K4 is connected with the coil A1 of the switching-off contactor K2; node 13 of the auxiliary switching-on node BB2 of the medium-voltage contactor body is connected with the other end of the switching-on indicator lamp LD of the medium-voltage contactor body of 6 kV; node 6 of the auxiliary node BB1 for opening the medium-voltage contactor body is connected with the other end of the indicator lamp YD for opening the medium-voltage contactor body of 6 kV; 12 of the V7 and VSC type switching button LA3 are connected to the coil 14 of the V7 and VSC type switching relay K3; the electrical and mechanical switching button LA4 is connected 24 to the coil 14 of the electrical and mechanical switching relay K4; the node 12 of the V7 and VSC type conversion relay K3 is connected with the node 5 of the 6kV medium voltage contactor body; the node 10 of the V7 and VSC type conversion relay K3 is connected with the node 4 of the 6kV medium voltage contactor body; the node 9 of the V7 and VSC type conversion relay K3 is connected with the node 14 of the 6kV medium voltage contactor body; the node 22 of the opening contactor K2 is connected with the node 2 of the V7 and the VSC type conversion relay K3; the node 21 of the opening contactor K2 is connected with the node 1 of the V7 and the VSC type conversion relay K3; the node 8 of the electrical and mechanical switching relay K4 is connected to the node 21 of the 6kV medium voltage contactor body.
The power switch QF as described above is implemented with an air switch.
A 6kV medium voltage contactor multifunctional mechanical property test system, comprising the 6kV medium voltage contactor multifunctional mechanical property test stand and an opening and closing property instrument according to claim 1; the output end of the switching-on/off characteristic instrument is connected with the switching-on/off characteristic instrument interface on the multifunctional mechanical characteristic test bed of the 6kV medium-voltage contactor.
The switching-on/off characteristic instrument transmits pulse signals to the multifunctional mechanical characteristic test bed of the 6kV medium-voltage contactor, and simulates signals transmitted by the switching-on button LA1 and the switching-off button LA 2.
The beneficial effects of the invention are as follows:
the multifunctional mechanical characteristic test stand can realize the wiring switching of the four types of contactor tests only by switching the buttons, can also be connected with the switching-on/off characteristic instrument to measure the switching-on/off time of the contactor, can better avoid errors when the wiring is replaced, shortens the original test time of about 2 hours to 15 minutes, greatly improves the working efficiency, and shortens the working time by nearly 100 times for working groups by nearly 60 contactors in the overhaul of D305 and D404 of Qin two factories to obtain great economic benefit.
Drawings
Fig. 1 is a schematic circuit diagram of a multifunctional mechanical property test stand for a 6kV medium voltage contactor according to the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, a multifunctional mechanical characteristic test stand for a 6kV medium voltage contactor is characterized in that: an opening and closing characteristic instrument interface and a 110V power supply inlet wire interface are arranged on the test bed; the switching-on interface of the switching-off characteristic instrument interface is respectively connected with a node 4 of a switching-on button LA1, a node 1 of an electric and mechanical switching relay K4, nodes 5 and V7 of the switching-on relay K1 and a node 6 and a node 4 of a switching relay K3 of a VSC type 6kV medium voltage contactor; the opening interface of the opening and closing characteristic instrument interface is respectively connected with a node 4 of an opening button LA2, a node 2 of a switching relay K4 of an electric and mechanical 6kV medium voltage contactor and a node 11 of a 6kV medium voltage contactor body; the positive pole of the 110V power inlet wire interface is respectively connected with a node 32 of a switching-off contactor K2, a node 3 of a switching-off button LA2, a node 12 of a switching-on relay K1, a node 23 of a 6kV medium voltage contactor body switching-on auxiliary node BB2, a node 16 of a 6kV medium voltage contactor body switching-off auxiliary node BB1, one end of a power indicator HD, 11 of a V7 and VSC type 6kV medium voltage contactor switching button LA3, 23 of an electric and mechanical type 6kV medium voltage contactor switching button LA4, and a node 8 of a V7 and VSC type 6kV medium voltage contactor switching relay K3 through a power switch QF; the negative electrode of the 110V power inlet wire interface is respectively connected with a coil 13 of a switching-on relay K1, one end of a relay switching-on indicator lamp JD1, one end of a relay switching-off indicator lamp JD2, a coil A2 of a switching-off contactor K2, one end of a 6kV medium voltage contactor body switching-on indicator lamp LD, one end of a 6kV medium voltage contactor body switching-off indicator lamp YD, the other end of a power indicator lamp HD, a coil 13 and a node 5 of a V7 and VSC type 6kV medium voltage contactor switching relay K3, a coil 13 and a node 12 of an electric and mechanical switching relay K4 and a node 15 of a 6kV medium voltage contactor body through a power switch QF;
the node 31 of the opening contactor K2 is connected with the node 3 of the closing button LA1 and the node 9 of the closing relay K1; the node 9 of the electric and mechanical conversion relay K4 is connected with the coil 14 of the closing relay K1; the node 8 of the switching-on relay K1 is connected with the other end of the relay switching-on indicator lamp JD 1; the node 4 of the closing relay K1 is connected with the other end of the relay opening indicator lamp JD 2; the node 10 of the electrical and mechanical switching relay K4 is connected with the coil A1 of the switching-off contactor K2; node 13 of the auxiliary switching-on node BB2 of the medium-voltage contactor body is connected with the other end of the switching-on indicator lamp LD of the medium-voltage contactor body of 6 kV; node 6 of the auxiliary node BB1 for opening the medium-voltage contactor body is connected with the other end of the indicator lamp YD for opening the medium-voltage contactor body of 6 kV; 12 of the V7 and VSC type switching button LA3 are connected to the coil 14 of the V7 and VSC type switching relay K3; the electrical and mechanical switching button LA4 is connected 24 to the coil 14 of the electrical and mechanical switching relay K4; the node 12 of the V7 and VSC type conversion relay K3 is connected with the node 5 of the 6kV medium voltage contactor body; the node 10 of the V7 and VSC type conversion relay K3 is connected with the node 4 of the 6kV medium voltage contactor body; the node 9 of the V7 and VSC type conversion relay K3 is connected with the node 14 of the 6kV medium voltage contactor body; the node 22 of the opening contactor K2 is connected with the node 2 of the V7 and the VSC type conversion relay K3; the node 21 of the opening contactor K2 is connected with the node 1 of the V7 and the VSC type conversion relay K3; the node 8 of the electrical and mechanical switching relay K4 is connected to the node 21 of the 6kV medium voltage contactor body. In this embodiment, the power switch QF is implemented with an air switch.
The working principle of the invention is as follows:
the test bed of the invention is used for carrying out the switching-on and switching-off operation process of the 6kV medium-voltage contactor, and the switching-on and switching-off operation process comprises the following steps:
firstly, a test bed is connected with a 110V direct current power supply, a power switch QF is closed, the node 15 of a 6kV medium voltage contactor body is negatively charged, and a power indicator lamp HD is on.
1. When testing the V7 type electric hold type 6kV medium voltage contactor, the V7 and VSC type 6kV medium voltage contactor switching button LA3 was screwed to the V7 type (i.e., disconnected) and the electric and mechanical type 6kV medium voltage contactor switching button LA4 was screwed to the electric hold type (i.e., disconnected).
Closing: pressing the closing button LA1, the closing relay K1 is powered on, and normally open contacts (namely a node 5 and a node 9) of the closing relay K1 are closed, so that a closing loop is powered on and kept, and the node 5 of the 6kV medium-voltage contactor body is powered on. The opening contactor K2 is not electrified, normally closed contacts (namely a node 21 and a node 22) of the opening contactor K2 are kept on, nodes 4 and 14 of the 6kV medium voltage contactor body are connected, and the 6kV medium voltage contactor body is closed. The relay switching-on indicator lamp JD1 is on, and the 6kV medium-voltage contactor body switching-on indicator lamp LD is on.
And (3) opening: pressing the opening button LA2, obtaining electricity by the opening contactor K2, opening the normally closed contact (namely the node 31 and the node 32) of the opening contactor K2, losing electricity of a closing loop, losing electricity of the node 5 of the 6kV medium voltage contactor body, and opening the 6kV medium voltage contactor body. The relay opening indicator lamp JD2 is on, and the 6kV medium-voltage contactor body opening indicator lamp YD is on.
2. When testing a V7 type mechanical hold type 6kV medium voltage contactor, V7 and VSC type 6kV medium voltage contactor switch button LA3 was screwed to V7 type (i.e., open), and electrical and mechanical type 6kV medium voltage contactor switch button LA4 was screwed to mechanical hold type (i.e., closed): the electrical and mechanical type 6kV medium voltage contactor conversion relay K4 is powered, and the normally open contacts (namely the node 8 and the node 12) of the electrical and mechanical type 6kV medium voltage contactor conversion relay K4 are closed. The node 21 of the 6kV medium voltage contactor body is negatively charged.
Closing: pressing the closing button LA1, the node 5 of the 6kV medium voltage contactor body is electrified, the opening contactor K2 is not electrified, the normally closed contacts (namely the node 21 and the node 22) of the opening contactor K2 are kept on, the nodes 4 and 14 of the 6kV medium voltage contactor body are connected, and the 6kV medium voltage contactor body is closed. The relay opening indicator lamp JD2 is on, and the 6kV medium-voltage contactor body closing indicator lamp LD is on.
And (3) opening: and pressing a brake release button LA2, connecting a node 11 of the 6kV medium voltage contactor body to positive electricity, and enabling a brake release loop of the 6kV medium voltage contactor body to be powered on and enabling the 6kV medium voltage contactor body to be brake-released. The relay opening indicator lamp JD2 is on, and the 6kV medium-voltage contactor body opening indicator lamp YD is on.
3. When the VSC type electric holding type 6kV medium voltage contactor is used for testing, the V7 and the VSC type 6kV medium voltage contactor switching button LA3 are rotated to the VSC type (namely closed), the V7 and the VSC type 6kV medium voltage contactor switching relay K3 are powered on, a normally open node of the K3 is closed, a node 5 of the 6kV medium voltage contactor body is positively charged, and a node 14 is negatively charged. The electrical and mechanical switch button LA4 is screwed to the electrical hold type (i.e., disconnected).
Closing: pressing the closing button LA1, the closing relay K1 is powered on, and normally open contacts (namely a node 5 and a node 9) of the closing relay K1 are closed, so that a closing loop is powered on and kept, and a node 4 of the 6kV medium-voltage contactor body is powered on. The 6kV medium-voltage contactor body is switched on. The relay switching-on indicator lamp JD1 is on, and the 6kV medium-voltage contactor body switching-on indicator lamp LD is on.
And (3) opening: pressing the opening button LA2, powering on the opening contactor K2, opening the normally closed contact (namely the node 31 and the node 32) of the opening contactor K2, powering off the node 4 of the 6kV medium voltage contactor body, and opening the 6kV medium voltage contactor body. The relay opening indicator lamp JD2 is on, and the 6kV medium-voltage contactor body opening indicator lamp YD is on.
4. When the VSC type mechanical hold type 6kV medium voltage contactor test was performed, the V7 and VSC type 6kV medium voltage contactor switch button LA3 was screwed to the VSC type (i.e., closed), and the electric and mechanical type 6kV medium voltage contactor switch button LA4 was screwed to the mechanical hold type (i.e., closed). The V7 and the VSC type 6kV medium voltage contactor convert the relay K3 to be electrified, the normally open node of the K3 is closed, the node 5 of the 6kV medium voltage contactor body is positively electrified, and the node 14 is negatively electrified. The electrical and mechanical type 6kV medium voltage contactor conversion relay K4 is powered, and the normally open contacts (namely the node 8 and the node 12) of the electrical and mechanical type 6kV medium voltage contactor conversion relay K4 are closed. The node 21 of the 6kV medium voltage contactor body is negatively charged.
Closing: and pressing a closing button LA1, and positively charging a node 4 of the 6kV medium-voltage contactor body, wherein the 6kV medium-voltage contactor body is closed. The relay opening indicator lamp JD2 is on, and the 6kV medium-voltage contactor body closing indicator lamp LD is on.
And (3) opening: and pressing a brake release button LA2, connecting a node 11 of the 6kV medium voltage contactor body to positive electricity, and enabling a brake release loop of the 6kV medium voltage contactor body to be powered on and enabling the 6kV medium voltage contactor body to be brake-released. The relay opening indicator lamp JD2 is on, and the 6kV medium-voltage contactor body opening indicator lamp YD is on.
The test bed is used for connecting the opening and closing characteristic instrument to carry out the opening and closing operation process of the 6kV medium-voltage contactor, and the operation process is as follows:
after the switching-on/off characteristic instrument is connected, the action logic of the 6kV medium-voltage contactors in four different states is the same as that of the switching-on/off characteristic instrument, only the switching-on and switching-off pulse signals of the switching-on/off characteristic instrument replace the switching-on button LA1 and the switching-off button LA2 to send out signals, switching-on/off is realized, and the switching-on/off time is recorded in the switching-on/off characteristic instrument.
The embodiment of the present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described in the specification.
Claims (4)
1. A multifunctional mechanical characteristic test bed for a 6kV medium-voltage contactor is characterized in that: an opening and closing characteristic instrument interface and a 110V power supply inlet wire interface are arranged on the test bed; the switching-on interface of the switching-off characteristic instrument interface is respectively connected with a node 4 of a switching-on button LA1, a node 1 of an electric and mechanical switching relay K4, nodes 5 and V7 of the switching-on relay K1 and a node 6 and a node 4 of a switching relay K3 of a VSC type 6kV medium voltage contactor; the opening interface of the opening and closing characteristic instrument interface is respectively connected with a node 4 of an opening button LA2, a node 2 of a switching relay K4 of an electric and mechanical 6kV medium voltage contactor and a node 11 of a 6kV medium voltage contactor body; the positive pole of the 110V power inlet wire interface is respectively connected with a node 32 of a switching-off contactor K2, a node 3 of a switching-off button LA2, a node 12 of a switching-on relay K1, a node 23 of a 6kV medium voltage contactor body switching-on auxiliary node BB2, a node 16 of a 6kV medium voltage contactor body switching-off auxiliary node BB1, one end of a power indicator HD, 11 of a V7 and VSC type 6kV medium voltage contactor switching button LA3, 23 of an electric and mechanical type 6kV medium voltage contactor switching button LA4, and a node 8 of a V7 and VSC type 6kV medium voltage contactor switching relay K3 through a power switch QF; the negative electrode of the 110V power inlet wire interface is respectively connected with a coil 13 of a switching-on relay K1, one end of a relay switching-on indicator lamp JD1, one end of a relay switching-off indicator lamp JD2, a coil A2 of a switching-off contactor K2, one end of a 6kV medium voltage contactor body switching-on indicator lamp LD, one end of a 6kV medium voltage contactor body switching-off indicator lamp YD, the other end of a power indicator lamp HD, a coil 13 and a node 5 of a V7 and VSC type 6kV medium voltage contactor switching relay K3, a coil 13 and a node 12 of an electric and mechanical switching relay K4 and a node 15 of a 6kV medium voltage contactor body through a power switch QF;
the node 31 of the opening contactor K2 is connected with the node 3 of the closing button LA1 and the node 9 of the closing relay K1; the node 9 of the electric and mechanical conversion relay K4 is connected with the coil 14 of the closing relay K1; the node 8 of the switching-on relay K1 is connected with the other end of the relay switching-on indicator lamp JD 1; the node 4 of the closing relay K1 is connected with the other end of the relay opening indicator lamp JD 2; the node 10 of the electrical and mechanical switching relay K4 is connected with the coil A1 of the switching-off contactor K2; node 13 of the auxiliary switching-on node BB2 of the medium-voltage contactor body is connected with the other end of the switching-on indicator lamp LD of the medium-voltage contactor body of 6 kV; node 6 of the auxiliary node BB1 for opening the medium-voltage contactor body is connected with the other end of the indicator lamp YD for opening the medium-voltage contactor body of 6 kV; 12 of the V7 and VSC type switching button LA3 are connected to the coil 14 of the V7 and VSC type switching relay K3; the electrical and mechanical switching button LA4 is connected 24 to the coil 14 of the electrical and mechanical switching relay K4; the node 12 of the V7 and VSC type conversion relay K3 is connected with the node 5 of the 6kV medium voltage contactor body; the node 10 of the V7 and VSC type conversion relay K3 is connected with the node 4 of the 6kV medium voltage contactor body; the node 9 of the V7 and VSC type conversion relay K3 is connected with the node 14 of the 6kV medium voltage contactor body; the node 22 of the opening contactor K2 is connected with the node 2 of the V7 and the VSC type conversion relay K3; the node 21 of the opening contactor K2 is connected with the node 1 of the V7 and the VSC type conversion relay K3; the node 8 of the electrical and mechanical switching relay K4 is connected to the node 21 of the 6kV medium voltage contactor body.
2. The multifunctional mechanical property test stand of the 6kV medium-voltage contactor according to claim 1, wherein: the power switch QF is realized by an air switch.
3. A6 kV medium voltage contactor multifunctional mechanical characteristic test system is characterized in that: the multifunctional mechanical characteristic test bed of the 6kV medium-voltage contactor and the switching-on and switching-off characteristic instrument are included in the multifunctional mechanical characteristic test bed of the 6kV medium-voltage contactor; the output end of the switching-on/off characteristic instrument is connected with the switching-on/off characteristic instrument interface on the multifunctional mechanical characteristic test bed of the 6kV medium-voltage contactor.
4. A 6kV medium voltage contactor multifunctional mechanical property test system according to claim 3, characterized in that: the switching-on/off characteristic instrument sends pulse signals to a multifunctional mechanical characteristic test bed of the 6kV medium-voltage contactor, and simulates signals sent by a switching-on button LA1 and a switching-off button LA 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611233196.4A CN106768954B (en) | 2016-12-28 | 2016-12-28 | Multifunctional mechanical characteristic test bed for 6kV medium-voltage contactor |
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| CN201611233196.4A CN106768954B (en) | 2016-12-28 | 2016-12-28 | Multifunctional mechanical characteristic test bed for 6kV medium-voltage contactor |
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| CN106768954B true CN106768954B (en) | 2023-05-19 |
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| CN115389920A (en) * | 2022-08-18 | 2022-11-25 | 中核核电运行管理有限公司 | Self-holding verification device for medium-voltage contactor |
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| CH663699A5 (en) * | 1984-07-10 | 1987-12-31 | Sprecher & Schuh Ag | Starting device having a star/delta circuit for a three-phase induction motor |
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