CN105374645A - Secondary circuit of handcart cabinet - Google Patents
Secondary circuit of handcart cabinet Download PDFInfo
- Publication number
- CN105374645A CN105374645A CN201510807158.4A CN201510807158A CN105374645A CN 105374645 A CN105374645 A CN 105374645A CN 201510807158 A CN201510807158 A CN 201510807158A CN 105374645 A CN105374645 A CN 105374645A
- Authority
- CN
- China
- Prior art keywords
- circuit
- closing
- auxiliary contact
- ping
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/128—Manual release or trip mechanisms, e.g. for test purposes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a secondary circuit of a handcart cabinet. The secondary circuit comprises a closing circuit and a tripping circuit, wherein the closing circuit is connected with a first auxiliary contact (DL) of a breaker and a closing coil (HQ) in series; the tripping circuit is connected with a second auxiliary contact (DL) of the breaker and a tripping coil (TQ) in series; the closing circuit is also connected with a first auxiliary contact (S9) of a handcart position in series; and the first auxiliary contact (S9) of the handcart position is a normally open contact. According to the secondary circuit of the handcart cabinet, debuggers for the breaker of the handcart cabinet are reduced; the test complexity is lowered; and the security of the charged closing test is increased.
Description
Technical field
The invention belongs to electric power system power transmission and distribution technical field, be specifically related to a kind of secondary circuit strengthening hands injured anti-misoperation locking and convenient debugging.
Background technology
At present, in the hands injured closing circuit of circuit breaker that producer provides, be not connected in series handcart run location, simultaneously can not locking closing circuit; The hands injured circuit breaker that producer provides divides, in closing circuit, do not have independent test loop, needs commissioning staff by after on-the-spot for measuring and controlling protective device short circuit during test, then to point, closing circuit tests.
Owing to not carrying out anti-misoperation locking with handcart position in existing closing circuit, cause operating personnel can not safety operation; And existing test method, by measuring and controlling protective device by the on-the-spot short circuit of short line, does not have reliable anti-error measure, involves numerous first and second equipment and corresponding commissioning staff, increases complexity, the danger of test.
Summary of the invention
The present invention be directed to above-mentioned technical problem, propose a kind of novel hands injured secondary circuit, comprise closing circuit, trip(ping) circuit, wherein, closing circuit is serially connected with circuit breaker first auxiliary contact, closing coil, trip(ping) circuit is serially connected with circuit breaker second auxiliary contact, breaking coil, it is characterized in that: described closing circuit is also serially connected with handcart position first auxiliary contact, and described handcart position first auxiliary contact are normally opened contact.
Preferably, described secondary circuit also comprises test closing circuit and test trip(ping) circuit; Test closing circuit comprises the first divide-shut brake button and handcart position second auxiliary contact, the second auxiliary contact in this loop are normally-closed contact, the head end of test closing circuit is connected to the positive pole of DC power supply, end is connected to the intermediate terminal of closing circuit, after this intermediate terminal is positioned at handcart position first auxiliary contact of closing circuit, and before being positioned at circuit breaker first auxiliary contact, closing coil; Test trip(ping) circuit comprises the second divide-shut brake button and handcart position the 3rd auxiliary contact, the 3rd auxiliary contact in this loop are normally-closed contact, the head end of test trip(ping) circuit is connected to DC power anode, end is connected to the intermediate terminal of trip(ping) circuit, before this intermediate terminal is positioned at circuit breaker second auxiliary contact of trip(ping) circuit, breaking coil.
Preferably, described secondary circuit also comprises operational power source circuit, and the both positive and negative polarity that two terminals of protection supervisory equipment connect DC power supply respectively constitutes operational power source circuit, for providing power supply to protection supervisory equipment.
Preferably, the head end of closing circuit connects a terminal of protection supervisory equipment, and end connects DC power cathode; The head end of trip(ping) circuit connects a terminal of protection supervisory equipment, and end connects DC power cathode.
Beneficial effect of the present invention: decrease hands injured circuit breaker commissioning staff, reduce the complexity of test, add the fail safe of charged combined floodgate, test.
Accompanying drawing explanation
Fig. 1 is hands injured secondary circuit graph of the present invention.
The implication of Reference numeral:
1 operational power source circuit
2-in-1 lock loop
3 test closing circuits
4 trip(ping) circuits
5 test trip(ping) circuits
6 protection supervisory equipment
735kV breaker mechanism
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and it only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Figure 1 shows that hands injured secondary circuit graph of the present invention.As shown in Figure 1, this hands injured secondary circuit comprises operational power source circuit 1, closing circuit 2, test closing circuit 3, trip(ping) circuit 4, test trip(ping) circuit 5.
Wherein, the both positive and negative polarity that two terminals of protection supervisory equipment 6 connect DC power supply respectively constitutes operational power source circuit 1, provides power supply for giving protection supervisory equipment 6; Closing circuit 2 is serially connected with auxiliary contacts of circuit breaker DL, closing coil HQ, handcart position auxiliary contact S9, auxiliary contact S9 in this closing circuit 2 is normally opened contact, the head end of closing circuit 2 connects a terminal of protection supervisory equipment 6, and end connects DC power cathode; Trip(ping) circuit 4 is serially connected with auxiliary contacts of circuit breaker DL and breaking coil TQ, and the head end of trip(ping) circuit 4 connects a terminal of protection supervisory equipment 6, and end connects DC power cathode; Test closing circuit 3 comprises divide-shut brake button HA and handcart position auxiliary contact S8, auxiliary contact S8 in this loop is normally-closed contact, the head end of test closing circuit 3 is connected to the positive pole of DC power supply, end is connected to the intermediate terminal of closing circuit 2, after this intermediate terminal is positioned at the handcart position auxiliary contact S9 of closing circuit 2, and before being positioned at auxiliary contacts of circuit breaker DL, closing coil HQ; Test trip(ping) circuit 5 comprises divide-shut brake button TA and handcart position auxiliary contact S8, auxiliary contact S8 in this loop is normally-closed contact, the head end of test trip(ping) circuit 5 is connected to DC power anode, end is connected to the intermediate terminal of trip(ping) circuit 4, before this intermediate terminal is positioned at auxiliary contacts of circuit breaker DL, the breaking coil TQ of trip(ping) circuit 4.
In (1), (2) in Fig. 1, frame indicated by (3), loop is newly-increased loop of the present invention, and concrete condition is as follows:
Loop (1) is for increasing the handcart position auxiliary contact S9 of serial connection in closing circuit 2, the auxiliary electric shock S9 in this loop is normally opened contact, realizes anti mis-closedown function, namely only have when handcart is in run location, S9 auxiliary contact close, and guarantee operation puts in place, could close circuit breaker.
Loop (2) and (3) are test closing circuit 3, test trip(ping) circuit 5, when the handcart of hands injured is in test position, and press divide-shut brake button, the conducting of divide-shut brake test loop, testing crew can when handcart be in test position, being done experiment in circuit-breaker switching on-off loop of safety, the specific works principle of test loop (2) and (3) is as follows:
Test closing circuit 3: move handcart to test position, namely S8 auxiliary contact close, and after pressing switch knob HA, the conducting of test closing circuit 3; Finish test by switch knob HA involution, namely untie test closing circuit 3;
Test trip(ping) circuit 5: move handcart to test position, namely S8 auxiliary contact close, and after pressing trip button TA, test trip(ping) circuit 5 conducting; Finish test by trip button TA involution, namely untie test trip(ping) circuit 5.
Proposed above-mentioned specific implementation is only exemplary, not as limiting the scope of the present invention.Those skilled in the art can make corresponding adjustment and change to above-mentioned implementation as the case may be, and these adjustment and change also fall within the scope of protection of the present invention.
Claims (4)
1. a hands injured secondary circuit, comprise closing circuit, trip(ping) circuit, wherein, closing circuit is serially connected with circuit breaker first auxiliary contact (DL), closing coil (HQ), trip(ping) circuit is serially connected with circuit breaker second auxiliary contact (DL), breaking coil (TQ), it is characterized in that: described closing circuit is also serially connected with handcart position first auxiliary contact (S9), described handcart position first auxiliary contact (S9) are normally opened contact.
2. hands injured secondary circuit according to claim 1, is characterized in that: described secondary circuit also comprises test closing circuit and test trip(ping) circuit;
Test closing circuit comprises the first divide-shut brake button (HA) and handcart position second auxiliary contact (S8), the second auxiliary contact (S8) in this loop are normally-closed contact, the head end of test closing circuit is connected to the positive pole of DC power supply, end is connected to the intermediate terminal of closing circuit, after this intermediate terminal is positioned at handcart position first auxiliary contact (S9) of closing circuit, and before being positioned at circuit breaker first auxiliary contact (DL), closing coil (HQ);
Test trip(ping) circuit comprises the second divide-shut brake button (TA) and handcart position the 3rd auxiliary contact (S8), the 3rd auxiliary contact (S8) in this loop are normally-closed contact, the head end of test trip(ping) circuit is connected to DC power anode, end is connected to the intermediate terminal of trip(ping) circuit, before this intermediate terminal is positioned at circuit breaker second auxiliary contact (DL) of trip(ping) circuit, breaking coil (TQ).
3. hands injured secondary circuit according to claim 1 and 2; it is characterized in that: described secondary circuit also comprises operational power source circuit; the both positive and negative polarity that two terminals of protection supervisory equipment connect DC power supply respectively constitutes operational power source circuit, for providing power supply to protection supervisory equipment.
4. hands injured secondary circuit according to claim 3, is characterized in that: the head end of closing circuit connects a terminal of protection supervisory equipment, and end connects DC power cathode; The head end of trip(ping) circuit connects a terminal of protection supervisory equipment, and end connects DC power cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807158.4A CN105374645B (en) | 2015-11-19 | 2015-11-19 | A kind of hands injured secondary circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807158.4A CN105374645B (en) | 2015-11-19 | 2015-11-19 | A kind of hands injured secondary circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105374645A true CN105374645A (en) | 2016-03-02 |
| CN105374645B CN105374645B (en) | 2018-05-25 |
Family
ID=55376737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510807158.4A Active CN105374645B (en) | 2015-11-19 | 2015-11-19 | A kind of hands injured secondary circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105374645B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666920A (en) * | 2018-07-13 | 2018-10-16 | 河南森源电气股份有限公司 | A kind of PT hand car interlock circuit, PT hand car and metering cabinet |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996696A (en) * | 2006-11-14 | 2007-07-11 | 北海银河高科技产业股份有限公司 | Control circuit for intelligent breaker loop protection |
| CN201570845U (en) * | 2009-12-09 | 2010-09-01 | 上海中发电气（集团）股份有限公司 | Anti-trip circuit of handcart type circuit breaker |
| CN101944771A (en) * | 2010-08-13 | 2011-01-12 | 上海思源弘瑞自动化有限公司 | Secondary loop panoramic state monitoring system for electric operating mechanism of circuit breaker |
| WO2012046729A1 (en) * | 2010-10-07 | 2012-04-12 | 株式会社 東芝 | Circuit breaker phase control switching system and circuit breaker control unit |
| CN203135290U (en) * | 2013-01-22 | 2013-08-14 | 锦州华信开关电器有限责任公司 | Handcart cabinet anti-misoperation lockout circuit |
| CN104092300A (en) * | 2014-06-30 | 2014-10-08 | 国家电网公司 | 10kV handcart type high-voltage switch cabinet brake-separating monitoring loop |
| CN204696533U (en) * | 2015-03-30 | 2015-10-07 | 盛道（中国）电气有限公司 | The electric blocking circuit of Medium Voltage Switchgear |
| CN205051440U (en) * | 2015-10-22 | 2016-02-24 | 山东钢铁股份有限公司 | Breaker closing control circuit monitoring system that breaks |
-
2015
- 2015-11-19 CN CN201510807158.4A patent/CN105374645B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996696A (en) * | 2006-11-14 | 2007-07-11 | 北海银河高科技产业股份有限公司 | Control circuit for intelligent breaker loop protection |
| CN201570845U (en) * | 2009-12-09 | 2010-09-01 | 上海中发电气（集团）股份有限公司 | Anti-trip circuit of handcart type circuit breaker |
| CN101944771A (en) * | 2010-08-13 | 2011-01-12 | 上海思源弘瑞自动化有限公司 | Secondary loop panoramic state monitoring system for electric operating mechanism of circuit breaker |
| WO2012046729A1 (en) * | 2010-10-07 | 2012-04-12 | 株式会社 東芝 | Circuit breaker phase control switching system and circuit breaker control unit |
| CN203135290U (en) * | 2013-01-22 | 2013-08-14 | 锦州华信开关电器有限责任公司 | Handcart cabinet anti-misoperation lockout circuit |
| CN104092300A (en) * | 2014-06-30 | 2014-10-08 | 国家电网公司 | 10kV handcart type high-voltage switch cabinet brake-separating monitoring loop |
| CN204696533U (en) * | 2015-03-30 | 2015-10-07 | 盛道（中国）电气有限公司 | The electric blocking circuit of Medium Voltage Switchgear |
| CN205051440U (en) * | 2015-10-22 | 2016-02-24 | 山东钢铁股份有限公司 | Breaker closing control circuit monitoring system that breaks |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666920A (en) * | 2018-07-13 | 2018-10-16 | 河南森源电气股份有限公司 | A kind of PT hand car interlock circuit, PT hand car and metering cabinet |
| CN108666920B (en) * | 2018-07-13 | 2024-01-19 | 河南森源电气股份有限公司 | PT handcart interlocking circuit, PT handcart and metering cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105374645B (en) | 2018-05-25 |
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