CN104993572A - Novel voltage paralleling switching handle and method for using same - Google Patents
Novel voltage paralleling switching handle and method for using same Download PDFInfo
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- CN104993572A CN104993572A CN201510238642.XA CN201510238642A CN104993572A CN 104993572 A CN104993572 A CN 104993572A CN 201510238642 A CN201510238642 A CN 201510238642A CN 104993572 A CN104993572 A CN 104993572A
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Abstract
The invention relates to a novel voltage paralleling switching handle and a method for using same. A technical scheme is that a voltage paralleling device is arranged between a bus 1 and a bus 2; a first voltage transformer and a second voltage transformer are connected with the inner side of the voltage parallel device; the positive pole and the negative pole of the voltage paralleling device are connected through a first isolating switch and a second isolating switch; a voltage parallel operating handle and a second restart relay are arranged between the first isolating switch and the second isolating switch; the voltage paralleling operating handle is provided with multiple nodes; both sides of the voltage parallel operating handle are connected in parallel with a first voltage transformer isolating knife switch and a second voltage transformer isolating knife switch respectively; the first voltage transformer isolating knife switch is connected in series with a first restart relay; and the second voltage transformer isolating knife switch is connected in series with the second restart relay. The novel voltage paralleling switching handle prevents generation and development of a non-homologous paralleling phenomenon in a voltage paralleling process, restricts the influence and the range of protective motion abnormity, and improves power supply reliability.
Description
Technical field
The present invention relates to a kind of voltage switching device arranged side by side, particularly a kind of novel voltage switches handle and using method side by side.
Background technology
Along with the fast development of national economy, the requirement of user to power supply quality is more and more higher, and the Socie-economic loss that unplanned power failure causes is increasing, proposes more and more higher requirement to the safe and stable operation of power supply unit.Due to the particularity of one or two operational modes and voltage switching circuit, in actual grid switching operation process, owing to frequently switching secondary voltage shunt circuit, often there is the phenomenon that voltage parallel device burns.And then cause corresponding protection, measurement, metering device decompression, cause protective device tripping, malfunction, affect safe operation of power system, even cause power system accident.
Existing voltage switches handle QK side by side two states: point (off-the-line), conjunction (side by side).This handle only acts in the DC control circuit of voltage parallel device, the secondary side voltage function arranged side by side of voltage transformer on two sections of buses can be realized, but due to corresponding alternating voltage secondary circuit in parallel operation effectively can not be isolated when it runs, as easy as rolling off a logly cause side by side non-homogeneous, burn voltage plug-in unit arranged side by side.
At present, in power department and electric power vocational school, do not have corresponding equipment can realize side by side simultaneously and isolate the function of non-homogeneous voltage circuit.
Summary of the invention
Object of the present invention is exactly in view of the foregoing defects the prior art has, provides a kind of novel voltage to switch handle and using method side by side.
Its technical scheme is: be provided with voltage parallel device between I bus and II bus, first voltage transformer 1PT and the second voltage transformer 2PT is connected to the inner side of voltage parallel device, be connected with the second isolating switch 2GL by the first isolating switch 1GL between the positive pole K-2 of voltage parallel device voltage parallel device and negative pole K-4, the heavy motor type relay J12 of voltage parallel operation handle QK1 and second is provided with between the first described isolating switch 1GL and the second isolating switch 2GL, voltage parallel operation handle QK1 is provided with many group nodes, the both sides first voltage transformer isolation switch 1G in parallel and the second voltage transformer isolation switch 2G respectively of voltage parallel operation handle QK1, the heavy motor type relay J11 of series connection first on the first described voltage transformer isolation switch 1G, the triple motor type relay J13 of series connection on second voltage transformer isolation switch 2G.
The 7-8 of shunt voltage parallel operation handle on above-mentioned second heavy motor type relay J12,31-32 node; Voltage parallel operation handle QK1 node is connected in series respectively in three-phase circuit on described first heavy motor type relay J11, the 19-20 of A circuitry phase shunt voltage parallel operation handle QK1,25-26 node, the 15-16 of B circuitry phase shunt voltage parallel operation handle QK1,3-4 node, the 17-18 of C circuitry phase shunt voltage parallel operation handle QK1,5-6 node, three-phase circuit is connected in series the normally opened contact of the first heavy motor type relay J11 and the normally opened contact of the second heavy motor type relay J12 respectively; Described triple motor type relay J13 is connected in series voltage parallel operation handle QK1 node in three-phase circuit respectively, the 13-14 of A circuitry phase shunt voltage parallel operation handle QK1,1-2 node, the 21-22 of B circuitry phase shunt voltage parallel operation handle QK1,27-28 node, the 23-24 of C circuitry phase shunt voltage parallel operation handle QK1,29-30 node, three-phase circuit is connected in series the normally opened contact of triple motor type relay J13 respectively, and on the first heavy motor type relay J11, three-phase circuit connects the three-phase circuit of triple motor type relay J13 respectively.
Above-mentioned first heavy motor type relay J11 with triple motor type relay J13 is connected respectively voltage neutral point circuit N600.
Novel voltage switches a using method for handle side by side, comprises following step:
A) in " off-the-line " situation, in voltage secondary circuit arranged side by side, 13-14,15-16 on QK1 novel voltage parallel operation handle, 17-18,19-20,21-22,23-24 node is connected, secondary voltage now from the first voltage transformer, the second voltage transformer side is connected to each section of voltage bus through operating handle node, therebetween without any electrical link, perfect buffer action can be realized to alternating voltage, meet the requirement of fanout operation mode simultaneously;
B) in " I busbar voltage is for II busbar voltage " situation, when inlet wire A supplies whole transformer station's load, 111 switches and block switch DL are in co-bit, and 112 switches are in a point position, and inlet wire B is hot stand-by duty, under this kind of operational mode, need by the first voltage transformer, second voltage transformer secondary realizes meeting dead section bus interval protection needs side by side, now, novel voltage parallel operation handle QK1 is switched to I bus for II bus state, QK1 node 7-8 connects, first heavy motor type relay J11 in voltage switching, second heavy motor type relay J12, the coil of triple motor type relay J13 powers on, its node provided separately closes, the node 1-2 that in ac circuit, operating handle QK1 provides simultaneously, 3-4, 5-6 conducting, node 19-20, 21-22, 23-24, 25-26, 27-28, 29-30 disconnects, effectively the first voltage transformer and the second voltage transformer secondary side voltage are isolated, avoid non-homogeneous situation arranged side by side,
C) in " II busbar voltage is for I busbar voltage " situation, when inlet wire B supplies whole transformer station's load, 112 switches and block switch DL are in co-bit, and 111 switches are in a point position, and inlet wire A is hot stand-by duty, under this kind of operational mode, as need by the first voltage transformer, second voltage transformer secondary realizes function arranged side by side, only novel voltage parallel operation handle QK1 need be switched to II bus for I bus state, QK1 node 31-32 connects, first heavy motor type relay J11 in voltage switching, second heavy motor type relay J12, triple motor type relay J13 coil powers on, its node provided separately closes, the node 25-26 that in ac circuit, operating handle QK1 provides simultaneously, 27-28, 29-30 conducting, node 1-2, 3-4, 5-6, 13-14, 15-16, 17-18 disconnects, effectively the first voltage transformer and the second voltage transformer secondary side voltage are isolated, avoid the generation of non-homogeneous juxtaposed condition equally.
The invention has the beneficial effects as follows: correctly can realize transformer station's median generatrix voltage function arranged side by side, effectively isolate the equipment of the 1, second voltage transformer secondary voltage simultaneously.Its Main Function is the generation and the development that prevent non-homogeneous phenomenon arranged side by side in voltage process arranged side by side; the impact of restriction protection act exception and scope; improve the reliability of power supply; it is an important component part in modern power systems; it is to the safe operation ensureing electric power system, and tool is of great significance.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is voltage parallel operation handle node connecting structure schematic diagrames of the second heavy motor type relay;
Accompanying drawing 3 is syndeton schematic diagrames of the first voltage transformer and the second voltage transformer;
In upper figure: A601 ~ C601 is the first voltage transformer secondary side induced voltage, A603 ~ C603 is the second voltage transformer secondary side induced voltage, A602 ~ C602 is the secondary side induced voltage of the first voltage transformer after isolating switch switches, A604 ~ C604 is the secondary side induced voltage of the second voltage transformer after isolating switch switches, A630I ~ C630I switches the I busbar voltage after handle conversion side by side through voltage, A640I ~ C640I switches the II busbar voltage after handle conversion side by side through voltage, N600 is voltage neutral point circuit, first heavy motor type relay J11, second heavy motor type relay J12, triple motor type relay J13, K-2 is voltage parallel device positive pole, K-4 is voltage parallel device negative pole, first voltage transformer isolation switch 1G and the second voltage transformer isolation switch 2G, first isolating switch 1GL and the second isolating switch 2GL.
Embodiment
1-3 by reference to the accompanying drawings, the invention will be further described:
Technical scheme of the present invention for be provided with voltage parallel device between I bus and II bus, first voltage transformer 1PT and the second voltage transformer 2PT is connected to the inner side of voltage parallel device, be connected with the second isolating switch 2GL by the first isolating switch 1GL between the positive pole K-2 of voltage parallel device voltage parallel device and negative pole K-4, the heavy motor type relay J12 of voltage parallel operation handle QK1 and second is provided with between the first described isolating switch 1GL and the second isolating switch 2GL, voltage parallel operation handle QK1 is provided with many group nodes, the both sides first voltage transformer isolation switch 1G in parallel and the second voltage transformer isolation switch 2G respectively of voltage parallel operation handle QK1, the heavy motor type relay J11 of series connection first on the first described voltage transformer isolation switch 1G, the triple motor type relay J13 of series connection on second voltage transformer isolation switch 2G.
Wherein, the 7-8 of shunt voltage parallel operation handle on the second heavy motor type relay J12,31-32 node; Voltage parallel operation handle QK1 node is connected in series respectively in three-phase circuit on described first heavy motor type relay J11, the 19-20 of A circuitry phase shunt voltage parallel operation handle QK1,25-26 node, the 15-16 of B circuitry phase shunt voltage parallel operation handle QK1,3-4 node, the 17-18 of C circuitry phase shunt voltage parallel operation handle QK1,5-6 node, three-phase circuit is connected in series the normally opened contact of the first heavy motor type relay J11 and the normally opened contact of the second heavy motor type relay J12 respectively; Described triple motor type relay J13 is connected in series voltage parallel operation handle QK1 node in three-phase circuit respectively, the 13-14 of A circuitry phase shunt voltage parallel operation handle QK1,1-2 node, the 21-22 of B circuitry phase shunt voltage parallel operation handle QK1,27-28 node, the 23-24 of C circuitry phase shunt voltage parallel operation handle QK1,29-30 node, three-phase circuit is connected in series the normally opened contact of triple motor type relay J13 respectively, and on the first heavy motor type relay J11, three-phase circuit connects the three-phase circuit of triple motor type relay J13 respectively.
Wherein, the first heavy motor type relay J11 with triple motor type relay J13 is connected respectively voltage neutral point circuit N600.
Novel voltage switches a using method for handle side by side, comprises following step:
A) in " off-the-line " situation, in voltage secondary circuit arranged side by side, 13-14,15-16 on QK1 novel voltage parallel operation handle, 17-18,19-20,21-22,23-24 node is connected, secondary voltage now from the first voltage transformer, the second voltage transformer side is connected to each section of voltage bus through QK1 node, therebetween without any electrical link, perfect buffer action can be realized to alternating voltage, meet the requirement of fanout operation mode simultaneously;
B) in " I busbar voltage is for II busbar voltage " situation, when inlet wire A supplies whole transformer station's load, 111 switches and block switch DL are in co-bit, 112 switches are in a point position, inlet wire B is hot stand-by duty, under this kind of operational mode, need by the first voltage transformer, second voltage transformer secondary realizes meeting dead section bus interval protection needs side by side, voltage parallel operation handle QK1 is switched to I bus for II bus state, QK1 node 7-8 connects, first heavy motor type relay J11 in voltage switching, second heavy motor type relay J12, the coil of triple motor type relay J13 powers on, its node provided separately closes, the node 1-2 that in ac circuit, operating handle QK1 provides simultaneously, 3-4, 5-6 conducting, node 19-20, 21-22, 23-24, 25-26, 27-28, 29-30 disconnects, effectively the first voltage transformer and the second voltage transformer secondary side voltage are isolated, avoid non-homogeneous situation arranged side by side,
C) in " II busbar voltage is for I busbar voltage " situation, when inlet wire B supplies whole transformer station's load, 112 switches and block switch DL are in co-bit, and 111 switches are in a point position, and inlet wire A is hot stand-by duty, under this kind of operational mode, as need by the first voltage transformer, second voltage transformer secondary realizes function arranged side by side, only novel voltage parallel operation handle QK1 need be switched to II bus for I bus state, QK1 node 31-32 connects, first heavy motor type relay J11 in voltage switching, second heavy motor type relay J12, triple motor type relay J13 coil powers on, its node provided separately closes, the node 25-26 that in ac circuit, operating handle QK1 provides simultaneously, 27-28, 29-30 conducting, node 1-2, 3-4, 5-6, 13-14, 15-16, 17-18 disconnects, effectively the first voltage transformer and the second voltage transformer secondary side voltage are isolated, avoid the generation of non-homogeneous juxtaposed condition equally.
Claims (4)
1. a novel voltage switches handle side by side, it is characterized in that: between I bus and II bus, be provided with voltage parallel device, first voltage transformer 1PT and the second voltage transformer 2PT is connected to the inner side of voltage parallel device, be connected with the second isolating switch 2GL by the first isolating switch 1GL between the positive pole K-2 of voltage parallel device voltage parallel device and negative pole K-4, the heavy motor type relay J12 of voltage parallel operation handle QK1 and second is provided with between the first described isolating switch 1GL and the second isolating switch 2GL, voltage parallel operation handle QK1 is provided with many group nodes, the both sides first voltage transformer isolation switch 1G in parallel and the second voltage transformer isolation switch 2G respectively of voltage parallel operation handle QK1, the heavy motor type relay J11 of series connection first on the first described voltage transformer isolation switch 1G, the triple motor type relay J13 of series connection on second voltage transformer isolation switch 2G.
2. a kind of novel voltage according to claim 1 switches handle side by side, it is characterized in that: the 7-8 of shunt voltage parallel operation handle on the described second heavy motor type relay J12,31-32 node; Voltage parallel operation handle QK1 node is connected in series respectively in three-phase circuit on described first heavy motor type relay J11, the 19-20 of A circuitry phase shunt voltage parallel operation handle QK1,25-26 node, the 15-16 of B circuitry phase shunt voltage parallel operation handle QK1,3-4 node, the 17-18 of C circuitry phase shunt voltage parallel operation handle QK1,5-6 node, three-phase circuit is connected in series the normally opened contact of the first heavy motor type relay J11 and the normally opened contact of the second heavy motor type relay J12 respectively; Described triple motor type relay J13 is connected in series voltage parallel operation handle QK1 node in three-phase circuit respectively, the 13-14 of A circuitry phase shunt voltage parallel operation handle QK1,1-2 node, the 21-22 of B circuitry phase shunt voltage parallel operation handle QK1,27-28 node, the 23-24 of C circuitry phase shunt voltage parallel operation handle QK1,29-30 node, three-phase circuit is connected in series the normally opened contact of triple motor type relay J13 respectively, and on the first heavy motor type relay J11, three-phase circuit connects the three-phase circuit of triple motor type relay J13 respectively.
3. a kind of novel voltage according to claim 2 switches handle side by side, it is characterized in that: the first heavy motor type relay J11 with triple motor type relay J13 is connected respectively voltage neutral point circuit N600.
4. a kind of novel voltage according to any one of claim 1-3 switches the using method of handle side by side, it is characterized in that: comprise following step:
A) in off-the-line situation, in voltage secondary circuit arranged side by side, 13-14,15-16 on QK1 novel voltage parallel operation handle, 17-18,19-20,21-22,23-24 node is connected, secondary voltage now from the first voltage transformer, the second voltage transformer side is connected to each section of voltage bus through operating handle node, therebetween without any electrical link, perfect buffer action can be realized to alternating voltage, meet the requirement of fanout operation mode simultaneously;
B) I busbar voltage is in II busbar voltage situation, and when inlet wire A supplies whole transformer station's load, 111 switches and block switch DL are in co-bit, and 112 switches are in a point position, and inlet wire B is hot stand-by duty, under this kind of operational mode, need by the first voltage transformer, second voltage transformer secondary realizes meeting dead section bus interval protection needs side by side, now, novel voltage parallel operation handle QK1 is switched to I bus for II bus state, QK1 node 7-8 connects, first heavy motor type relay J11 in voltage switching, second heavy motor type relay J12, the coil of triple motor type relay J13 powers on, its node provided separately closes, the node 1-2 that in ac circuit, operating handle QK1 provides simultaneously, 3-4, 5-6 conducting, node 19-20, 21-22, 23-24, 25-26, 27-28, 29-30 disconnects, effectively the first voltage transformer and the second voltage transformer secondary side voltage are isolated, avoid non-homogeneous situation arranged side by side,
C) II busbar voltage is in I busbar voltage situation, and when inlet wire B supplies whole transformer station's load, 112 switches and block switch DL are in co-bit, and 111 switches are in a point position, and inlet wire A is hot stand-by duty, under this kind of operational mode, as need by the first voltage transformer, second voltage transformer secondary realizes function arranged side by side, only novel voltage parallel operation handle QK1 need be switched to II bus for I bus state, QK1 node 31-32 connects, first heavy motor type relay J11 in voltage switching, second heavy motor type relay J12, triple motor type relay J13 coil powers on, its node provided separately closes, the node 25-26 that in ac circuit, operating handle QK1 provides simultaneously, 27-28, 29-30 conducting, node 1-2, 3-4, 5-6, 13-14, 15-16, 17-18 disconnects, effectively the first voltage transformer and the second voltage transformer secondary side voltage are isolated, avoid the generation of non-homogeneous juxtaposed condition equally.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541942.9A CN108767968A (en) | 2015-05-12 | 2015-05-12 | Voltage switches the application method of handle side by side |
| CN201510238642.XA CN104993572A (en) | 2015-05-12 | 2015-05-12 | Novel voltage paralleling switching handle and method for using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510238642.XA CN104993572A (en) | 2015-05-12 | 2015-05-12 | Novel voltage paralleling switching handle and method for using same |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810541942.9A Division CN108767968A (en) | 2015-05-12 | 2015-05-12 | Voltage switches the application method of handle side by side |
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| Publication Number | Publication Date |
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| CN104993572A true CN104993572A (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510238642.XA Pending CN104993572A (en) | 2015-05-12 | 2015-05-12 | Novel voltage paralleling switching handle and method for using same |
| CN201810541942.9A Withdrawn CN108767968A (en) | 2015-05-12 | 2015-05-12 | Voltage switches the application method of handle side by side |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810541942.9A Withdrawn CN108767968A (en) | 2015-05-12 | 2015-05-12 | Voltage switches the application method of handle side by side |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462170A (en) * | 2018-04-04 | 2018-08-28 | 国网福建省电力有限公司电力科学研究院 | Intelligent substation interval combining unit voltage automatic Synchronization and method for handover control |
| CN108695968A (en) * | 2018-06-19 | 2018-10-23 | 河南森源电气股份有限公司 | A kind of busbar PT coordinate systems |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002369513A (en) * | 2001-06-08 | 2002-12-20 | Nichicon Corp | Switching power supply |
| CN102832693A (en) * | 2012-08-16 | 2012-12-19 | 华中科技大学 | Double-power automatic transfer switch device of one-way direct current power distribution grid |
| CN203632347U (en) * | 2013-11-08 | 2014-06-04 | 国家电网公司 | Double-bus voltage parallel switching device based on uninterrupted power supply |
-
2015
- 2015-05-12 CN CN201510238642.XA patent/CN104993572A/en active Pending
- 2015-05-12 CN CN201810541942.9A patent/CN108767968A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002369513A (en) * | 2001-06-08 | 2002-12-20 | Nichicon Corp | Switching power supply |
| CN102832693A (en) * | 2012-08-16 | 2012-12-19 | 华中科技大学 | Double-power automatic transfer switch device of one-way direct current power distribution grid |
| CN203632347U (en) * | 2013-11-08 | 2014-06-04 | 国家电网公司 | Double-bus voltage parallel switching device based on uninterrupted power supply |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462170A (en) * | 2018-04-04 | 2018-08-28 | 国网福建省电力有限公司电力科学研究院 | Intelligent substation interval combining unit voltage automatic Synchronization and method for handover control |
| CN108462170B (en) * | 2018-04-04 | 2021-05-14 | 国网福建省电力有限公司电力科学研究院 | Automatic voltage paralleling and switching control method for interval merging unit of intelligent substation |
| CN108695968A (en) * | 2018-06-19 | 2018-10-23 | 河南森源电气股份有限公司 | A kind of busbar PT coordinate systems |
| CN108695968B (en) * | 2018-06-19 | 2024-02-20 | 河南森源电气股份有限公司 | Bus PT parallel system |
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| Publication number | Publication date |
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| CN108767968A (en) | 2018-11-06 |
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