CN103647255A - Improved FC switch control loop - Google Patents
Improved FC switch control loop Download PDFInfo
- Publication number
- CN103647255A CN103647255A CN201310730860.6A CN201310730860A CN103647255A CN 103647255 A CN103647255 A CN 103647255A CN 201310730860 A CN201310730860 A CN 201310730860A CN 103647255 A CN103647255 A CN 103647255A
- Authority
- CN
- China
- Prior art keywords
- relay
- switch
- contact
- closing
- trip
- 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.)
- Pending
Links
Images
Landscapes
- Relay Circuits (AREA)
Abstract
The invention discloses an improved FC switch control loop. A trip maintaining function of an original anti-tripping relay is maintained to prevent arc discharge of a contact of a protection or control loop and prevent burning of the contact. A newly-added anti-tripping relay is not started by an original anti-tripping relay current loop but started by a closing loop. The TBJ is started as long as the K15 and the ZJ act simultaneously, the F-C switch closing loop is cut off, and the aims of tripping prevention or reliable tripping can be achieved. After the control loop is improved, even if a switch closing node is closed all the time, the switch can trip reliably when a tripping command is transmitted, and the problem that switch strip resisting is prone to happen in the existing FC switch control loop is thoroughly solved. Long-term practice inspection proves that the loop is good in effect, device operation is reliable, and the loop has high popularization value in power enterprises.
Description
Technical field
The present invention relates to thermal power generation unit field, relate in particular to a kind of improved FC switch control circuit.
Background technology
High-pressure vacuum contactor and high-tension fuse are as the main switchgear of power plant control and protection 6kV high-tension motor, application is very extensive at home at present, high-pressure vacuum contactor and high-tension fuse are combined into F-C loop, become the high-pressure vacuum contactor-fuse combined electric apparatus with integrated protection characteristic, greatly reduce system cost; There is its unique advantage in F-C loop on control and protection motor, can more effective protection load.Therefore the reliability in contactor control and protection loop is outstanding aobvious important concerning F-C switch loop.
Easily there is the tripping of FC switch trip in current FC switch designs, the phenomenon of burning switch badly influences the safe and stable operation of unit in unit running process.
Summary of the invention
Object of the present invention is exactly in order to address the above problem, and has proposed a kind of improved 6kV FC switch control circuit, and this loop has thoroughly solved the switch trip tripping problem that contactor control loop exists in the past, possesses in actual applications obvious advantage.
To achieve these goals, the present invention adopts following technical scheme:
An improved FC switch control circuit, comprising:
The first branch road: light-emitting diode HG, tripping position relay KTP coil, switch auxiliary contact H
2be connected in series successively with closing relay K15 coil, distant place combined floodgate contact DCS HZ is attempted by the series arm two ends of light-emitting diode HG and tripping position relay KTP coil.
The second branch road: normally opened contact one and the combined floodgate latching relay K16 coil of closing relay K15 are connected in series.
The 3rd branch road: shunt circuit, the anti-trip relay TBJ coil of the normally opened contact two of closing relay K15, the normally opened contact of the heavy motor type relay ZJ of closing position and the normally opened contact of anti-trip relay TBJ are connected in series successively; The normally opened contact two of closing relay K15 accesses FC switch closing circuit after connecting successively with the five-defence block contact LXW of anti-trip relay TBJ normally-closed contact one, anti-trip relay TBJ normally-closed contact two, switch simultaneously.
The 4th branch road: the normally opened contact of anti-trip relay KLT.A, the normally-closed contact of KPL.T, anti-trip relay KLT.A coil are in parallel with the series arm of light-emitting diode HR and closing operation position relay KCP coil after connecting successively, the breaking coil of access FC switch after in parallel, transfer trip contact DCS TZ is in parallel with the normally opened contact of anti-trip relay KLT.A.
The 5th branch road: switch auxiliary contact H
2connect with the heavy motor type relay ZJ of closing position coil.
Normally-closed contact one end of combined floodgate latching relay K16 is connected on the switch auxiliary contact H of described the first branch road
2and between closing relay K15, the other end is connected between the closing relay K15 normally opened contact one and combined floodgate latching relay K16 of described the second branch road.
Described five branch roads are connected in parallel successively.
Described anti-trip relay TBJ selects to cut off the high power relay of larger inductive load electric current.
The heavy motor type relay ZJ of described closing position selects deferred action formula electromagnetism auxiliary relay, will be controlled at 80ms-90ms relay actuation time.
During combined floodgate; DCS instruction starts closing relay K15; after K15 starts, by combined floodgate latching relay K16, do in short-term and keep; long to guarantee reclosing command enough time; guarantee that FC switch reliably closes a floodgate; two pairs of series connection contacts by anti-trip relay TBJ after the reliable combined floodgate of switch cut off closing circuits; reclosing command is disconnected; while having guaranteed that switch is received trip command, can because can not disconnecting, a variety of causes can not trip because of the switch contact that closes a floodgate; two pairs of TBJ series connection promises TBJ while cutting off closing circuit arcing minimum, protected TBJ contact.
The invention has the beneficial effects as follows:
The tripping operation that the present invention retains former anti-trip relay in control loop keeps function; to prevent protection or the arcing of control loop contact, burn contact; newly-increased anti-trip relay is no longer by former anti-jump relay current loop start; but change by closing circuit, start; as long as just start TBJ when K15, ZJ move simultaneously; cut off F-C switch closing circuit, reach the object of anti-jump and reliable trip.
After control loop improves, even if switch combined floodgate node is always closed, when having trip command, also can make switch reliable trip, thoroughly solved the problem that switch trip tripping easily appears in FC switch control circuit in the past, through long-term practice test, effect is good, equipment is reliable, at electric power enterprise, has high promotional value.
Accompanying drawing explanation
Fig. 1 is the improved FC switch control circuit of the present invention schematic diagram;
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:
As shown in Figure 1, a kind of improved FC switch control circuit, comprising:
The first branch road: light-emitting diode HG, tripping position relay KTP coil, switch auxiliary contact H
2be connected in series successively with closing relay K15 coil, distant place combined floodgate contact DCS HZ is attempted by the series arm two ends of light-emitting diode HG and tripping position relay KTP coil.
The reclosing command action that distant place combined floodgate contact DCS HZ sends according to unit distribute computer control system.
The second branch road: normally opened contact one and the combined floodgate latching relay K16 coil of closing relay K15 are connected in series.
The 3rd branch road: shunt circuit, the anti-trip relay TBJ coil of the normally opened contact two of closing relay K15, the normally opened contact of the heavy motor type relay ZJ of closing position and the normally opened contact of anti-trip relay TBJ are connected in series successively; The normally opened contact two of closing relay K15 accesses FC switch closing circuit after connecting successively with the five-defence block contact LXW of anti-trip relay TBJ normally-closed contact one, anti-trip relay TBJ normally-closed contact two, switch simultaneously.
The 4th branch road: the normally opened contact of anti-trip relay KLT.A, the normally-closed contact of KPL.T, anti-trip relay KLT.A coil are in parallel with the series arm of light-emitting diode HR and closing operation position relay KCP coil after connecting successively, the breaking coil of access FC switch after in parallel, transfer trip contact DCS TZ is in parallel with the normally opened contact of anti-trip relay KLT.A.
The trip command action that transfer trip contact DCS TZ sends according to unit distribute computer control system.
The 5th branch road: switch auxiliary contact H
2connect with the heavy motor type relay ZJ of closing position coil.
Normally-closed contact one end of combined floodgate latching relay K16 is connected on the switch auxiliary contact H of described the first branch road
2and between closing relay K15, the other end is connected between the closing relay K15 normally opened contact one and combined floodgate latching relay K16 of described the second branch road.
After being connected in parallel successively, above-mentioned five branch roads access power supply.
Each element of control loop is described as follows:
HG: light-emitting diode is red light, shows when lamp is bright that switch is at open position; KIP: tripping position relay, shows during action that switch is at open position; K15: closing relay, in order to expand DCS reclosing command; K16: combined floodgate latching relay, makes switch can obtain sufficiently long closing time and close a floodgate successfully to guarantee switch; KLT.A: former anti-trip relay, after transformation, only play maintenance trip(ping) circuit, make the effect of switch reliable trip, anti creep performance does not recur; HR: light-emitting diode is red light, shows when lamp is bright that switch is at closing position; KCP: closing operation position relay, shows during action that switch is at closing position; ZJ: the heavy motor type relay of closing position, in order to obtain than the switch closing position signal of the slow 80ms of switch auxiliary contact; TBJ: anti-trip relay, plays and prevents that switch from jumping, and cuts off the effect of closing circuit electric arc; DCS HZ: distant place reclosing command; DCS TZ: transfer trip contact; H2: switch auxiliary contact;
FC switch inner member is described as follows:
K2S: the inner tripping relay of switch; K2E: breaking coil, in order to produce tripping operation electromagnetic force; KIM: closing coil, in order to produce combined floodgate electromagnetic force; KIE: the inner closing relay of switching on/off handcart; H1: switch auxiliary contact; LXW: five-defence block contact; XK1: switch main fuse fusing contact;
During combined floodgate; DCS instruction starts closing relay K15; after K15 starts, by combined floodgate latching relay K16, do in short-term and keep; long to guarantee reclosing command enough time; guarantee that FC switch reliably closes a floodgate; two pairs of series connection contacts by anti-trip relay TBJ after the reliable combined floodgate of switch cut off closing circuits; reclosing command is disconnected; while having guaranteed that switch is received trip command, can because can not disconnecting, a variety of causes can not trip because of the switch contact that closes a floodgate; two pairs of TBJ series connection promises TBJ while cutting off closing circuit arcing minimum, protected TBJ contact.
The tripping operation that retains former anti-trip relay in control loop keeps function; to prevent protection or the arcing of control loop contact, burn contact; newly-increased anti-trip relay is no longer by former anti-jump relay current loop start; but change by closing circuit, start; as long as just start TBJ when K15, ZJ move simultaneously; cut off F-C switch closing circuit, reach the object of anti-jump and reliable trip.
As shown in Figure 1, TBJ all can move cut-out switching current when each switch closes a floodgate, thus need to select can cut off the high power relay of larger inductive load electric current, and by its two pairs of normally closed contacts its current interruption abilities of increase of connecting.
The effect of using the heavily moving H2 contact of ZJ to restart TBJ is in order to make switch combined floodgate auxiliary relay KIM obtain enough conduction time, the time difference that auxiliary contact switch in vacuum contactor making process (often open and become normally closed point and normal time difference of making war of normally closed change).
ZJ pull up time will surpass the combined floodgate of 40ms ability Reliable guarantee F-C switch, therefore ZJ should select the deferred action formula electromagnetism auxiliary relay that surpasses 40ms operate time.
In actual applications, action arrival time of F-C switch combined floodgate electromagnetically operated valve is not changeless, so switch also there will be combined floodgate Problem of Failure sometimes after a period of time, although ZJ relay service time can address this problem, but time relay action is also unreliable, and can not be controlled at operate time in ms level, this and equipment require the QA requirement of relaying protection can clash again while being combined in fault, therefore need to find the ZJ relay that operate time preferably can be within the scope of 80ms-90ms, ZJY-228 type relay for example, reliably to solve, close a floodgate and the QA contradiction of relaying protection.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (3)
1. an improved FC switch control circuit, is characterized in that, comprising:
The first branch road: light-emitting diode HG, tripping position relay KTP coil, switch auxiliary contact H
2be connected in series successively with closing relay K15 coil, distant place combined floodgate contact DCS HZ is attempted by the series arm two ends of light-emitting diode HG and tripping position relay KTP coil;
The second branch road: normally opened contact one and the combined floodgate latching relay K16 coil of closing relay K15 are connected in series;
The 3rd branch road: shunt circuit, the anti-trip relay TBJ coil of the normally opened contact two of closing relay K15, the normally opened contact of the heavy motor type relay ZJ of closing position and the normally opened contact of anti-trip relay TBJ are connected in series successively; The normally opened contact two of closing relay K15 accesses FC switch closing circuit after connecting successively with the five-defence block contact LXW of anti-trip relay TBJ normally-closed contact one, anti-trip relay TBJ normally-closed contact two, switch simultaneously;
The 4th branch road: the normally opened contact of anti-trip relay KLT.A, the normally-closed contact of KPL.T, anti-trip relay KLT.A coil are in parallel with the series arm of light-emitting diode HR and closing operation position relay KCP coil after connecting successively, the breaking coil of access FC switch after in parallel, transfer trip contact DCS TZ is in parallel with the normally opened contact of anti-trip relay KLT.A;
The 5th branch road: switch auxiliary contact H
2connect with the heavy motor type relay ZJ of closing position coil;
Normally-closed contact one end of combined floodgate latching relay K16 is connected on the switch auxiliary contact H of described the first branch road
2and between closing relay K15, the other end is connected between the closing relay K15 normally opened contact one and combined floodgate latching relay K16 of described the second branch road;
Described five branch roads are connected in parallel successively.
2. a kind of improved FC switch control circuit as claimed in claim 1, is characterized in that, described anti-trip relay TBJ selects to cut off the high power relay of larger inductive load electric current.
3. a kind of improved FC switch control circuit as claimed in claim 1, is characterized in that, the heavy motor type relay ZJ of described closing position selects deferred action formula electromagnetism auxiliary relay, will be controlled at 80ms-90ms relay actuation time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310730860.6A CN103647255A (en) | 2013-12-26 | 2013-12-26 | Improved FC switch control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310730860.6A CN103647255A (en) | 2013-12-26 | 2013-12-26 | Improved FC switch control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103647255A true CN103647255A (en) | 2014-03-19 |
Family
ID=50252439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310730860.6A Pending CN103647255A (en) | 2013-12-26 | 2013-12-26 | Improved FC switch control loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103647255A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591363A (en) * | 2016-03-10 | 2016-05-18 | 大唐贵州发耳发电有限公司 | High-voltage motor accident control circuit |
| CN107181238A (en) * | 2017-07-18 | 2017-09-19 | 攀钢集团西昌钢钒有限公司 | Distribution system high-voltage motor control loop |
| CN110649622A (en) * | 2018-06-26 | 2020-01-03 | 河南平芝高压开关有限公司 | Control circuit of electrical secondary side of unified power flow controller |
| CN112260231A (en) * | 2020-08-31 | 2021-01-22 | 深圳供电局有限公司 | Circuit breaker anti-tripping loop |
| CN113589156A (en) * | 2021-06-18 | 2021-11-02 | 国网浙江省电力有限公司嘉兴供电公司 | Circuit breaker anti-tripping function test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202206035U (en) * | 2011-09-05 | 2012-04-25 | 江苏西电南自智能电力设备有限公司 | GIS (gas insulation switch) anti-tripping circuit integrated device |
| CN202535044U (en) * | 2012-04-11 | 2012-11-14 | 济南市历城区供电公司 | Breaker switching-on and tripping control circuit |
| CN203660508U (en) * | 2013-12-26 | 2014-06-18 | 大唐黄岛发电有限责任公司 | Improved FC switch control circuit |
-
2013
- 2013-12-26 CN CN201310730860.6A patent/CN103647255A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202206035U (en) * | 2011-09-05 | 2012-04-25 | 江苏西电南自智能电力设备有限公司 | GIS (gas insulation switch) anti-tripping circuit integrated device |
| CN202535044U (en) * | 2012-04-11 | 2012-11-14 | 济南市历城区供电公司 | Breaker switching-on and tripping control circuit |
| CN203660508U (en) * | 2013-12-26 | 2014-06-18 | 大唐黄岛发电有限责任公司 | Improved FC switch control circuit |
Non-Patent Citations (2)
| Title |
|---|
| 刘玉涛: "6KV FC开关控制回路改造", 《电气技术》, no. 3, 15 March 2013 (2013-03-15) * |
| 刘玉涛: "6KV FC开关跳闸拒动研究", 《机电信息》, no. 36, 25 December 2012 (2012-12-25) * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591363A (en) * | 2016-03-10 | 2016-05-18 | 大唐贵州发耳发电有限公司 | High-voltage motor accident control circuit |
| CN105591363B (en) * | 2016-03-10 | 2019-03-05 | 大唐贵州发耳发电有限公司 | A kind of high-tension motor accident control circuit |
| CN107181238A (en) * | 2017-07-18 | 2017-09-19 | 攀钢集团西昌钢钒有限公司 | Distribution system high-voltage motor control loop |
| CN110649622A (en) * | 2018-06-26 | 2020-01-03 | 河南平芝高压开关有限公司 | Control circuit of electrical secondary side of unified power flow controller |
| CN110649622B (en) * | 2018-06-26 | 2023-12-29 | 河南平芝高压开关有限公司 | Control circuit of unified power flow controller electrical secondary side |
| CN112260231A (en) * | 2020-08-31 | 2021-01-22 | 深圳供电局有限公司 | Circuit breaker anti-tripping loop |
| CN112260231B (en) * | 2020-08-31 | 2023-09-12 | 深圳供电局有限公司 | Circuit breaker anti-jump loop |
| CN113589156A (en) * | 2021-06-18 | 2021-11-02 | 国网浙江省电力有限公司嘉兴供电公司 | Circuit breaker anti-tripping function test method |
| CN113589156B (en) * | 2021-06-18 | 2024-02-09 | 国网浙江省电力有限公司嘉兴供电公司 | Circuit breaker anti-tripping function test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103647255A (en) | Improved FC switch control loop | |
| CN103606902B (en) | The trip-preventing circuit that a kind of chopper is combined with relay protection | |
| CN106655898B (en) | Reactor cabinet control circuit | |
| CN103426695B (en) | A kind of prevent breaker coil from burning method and device | |
| CN203660508U (en) | Improved FC switch control circuit | |
| CN111458633B (en) | Tripping and closing monitoring circuit and fault alarming method | |
| CN104821557A (en) | Control loop of breaker operation box | |
| CN111192793A (en) | Anti-jumping device and anti-jumping method for spring operation mechanism, spring operation mechanism and circuit breaker | |
| CN203481154U (en) | Device for preventing circuit breaker coils from being burnt | |
| CN105788983A (en) | Circuit breaker control system and method | |
| CN203368011U (en) | Circuit breaker trip coil automation protection device | |
| CN111585255B (en) | Trip monitoring loop | |
| CN209881379U (en) | Control loop of electric isolating switch | |
| CN105449839A (en) | Isolated type high-speed double-power-supply switching device | |
| CN112086942B (en) | Anti-tripping loop and control method thereof | |
| CN108631261B (en) | Control circuit and method for bidirectional monitoring of breaker state | |
| CN109167264B (en) | Jump preventing device for circuit breaker in high-voltage switch cabinet | |
| CN210326996U (en) | Improved switch-on/off controller of circuit breaker | |
| CN218678427U (en) | Generator de-excitation loop | |
| CN205723379U (en) | A kind of auxiliary contacts of circuit breaker conversion equipment based on spring transmission and the breaker control circuit of composition thereof | |
| CN117856176A (en) | Protection control loop system of breaker opening and closing coil | |
| CN220234504U (en) | Novel control circuit for controlling start and stop of high-voltage motor by single contact | |
| CN112653091B (en) | Locking control loop of circuit breaker | |
| CN115047327A (en) | Circuit breaker closes trip full operating mode and keeps watch on operation return circuit | |
| CN105679615A (en) | Spring transmission based circuit breaker auxiliary contact conversion apparatus and circuit breaker control loop formed by same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140319 |