CN203039358U - An AC brake opening and closing self-holding circuit - Google Patents
An AC brake opening and closing self-holding circuit Download PDFInfo
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- CN203039358U CN203039358U CN 201320071286 CN201320071286U CN203039358U CN 203039358 U CN203039358 U CN 203039358U CN 201320071286 CN201320071286 CN 201320071286 CN 201320071286 U CN201320071286 U CN 201320071286U CN 203039358 U CN203039358 U CN 203039358U
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- combined floodgate
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Abstract
Provided is an AC brake opening and closing self-holding circuit. The AC brake opening and closing self-holding circuit comprises a closing circuit, a tripping circuit, and a self-holding circuit. In the closing circuit, a power supply is connected with a closing input terminal through a closing button and then is connected with the normally-closed contact of a tripping self-holding relay. The output of the normally-closed contact of a tripping self-holding relay is successively connected with the normally-closed contact of a closed position detecting relay, a closing self-holding relay coil, and a power terminal. In the tripping circuit, the power supply is connected with a tripping input terminal through a tripping button and then is successively connected with a tripping self-holding relay coil and the power terminal. The input end of a power terminal in the self-holding circuit is connected with the power supply, while the output end of the power terminal is connected with multiple circuits. The AC brake opening and closing self-holding circuit resolves technical problems of various kinds, complex wire connection, and easy burning of contacted control contacts of voltage-started and current-kept intermediate relays in the prior art. The AC brake opening and closing self-holding circuit has simplified wire connection and increases operating feasibility of the circuit.
Description
Technical field
The utility model relates to field of relay protection in power, specifically a kind of interchange divide-shut brake self-hold circuit.
Background technology
In the electric power system, power plant, transformer station generally adopt direct-flow storage battery that the operating power that deciliter provides to switch is provided.Development along with distribution network, 10KV and above high-tension electricity user increase gradually, integrated box-type substation is with its reliability height, floor space is little, the installation time short, oneself is popularized characteristics such as conveniently moving, and this local mounted mode also greatly reduces the electric energy loss of circuit simultaneously.But box-type substation is not because the space compactness is generally installed the direct-flow storage battery screen, but employing PT(voltage transformer) provide the alternating current 220V power supply, pass through the UPS(uninterrupted power supply again) come to provide operating power to switch cubicle.
The operation circuit of traditional microcomputer protective relay device all adopts direct current operative power source, so when the alternating current operation power supply, generally do not adopt operation circuit, the mode that directly adopts relay contact to control is carried out the breaking-closing operating of switch.Because when carrying out branch, closing operation, button or control signal may be of short duration or interrupted, this just can't ensure the reliability of breaking-closing operating, and if control signal disconnection in operating process, than the damage ring that is easier to cause control switch.
Common solution be minute, the auxiliary relay that inserts a voltage starting, electric current maintenance in the closing circuit realizes, as shown in Figure 1.Its making process is as follows: when combined floodgate input terminal HZ connected, the voltage starting coil HB-U of auxiliary relay was subjected to electricity, and contact HB connects; Power supply makes breaker closing coil LC be subjected to electricity through contact HB, the normally closed attached contact that helps of electric current self-sustaining coil HB-I, circuit breaker Q F, forms switching current; The switching current electric current self-sustaining coil HB-I that flows through makes auxiliary relay HB be in the self-sustaining state, even combined floodgate input terminal HZ finishes preceding disconnection at combined floodgate, auxiliary relay HB can not return yet; Close a floodgate after the end, the normally closed attached contact that helps of circuit breaker Q F disconnects, and switching current is cut off, and auxiliary relay HB returns.Its tripping operation process is: when circuit breaker was in closing position, the attached contact QF that helps that often opens that connects with breaking coil connected; When trip button TZ connected, the voltage starting coil TB-U of auxiliary relay was subjected to electricity, and contact TB connects; Power supply is often opened the attached contact (being in on-state this moment) that helps through contact TB, electric current self-sustaining coil TB-I, circuit breaker Q F makes circuit breaker trip coil LT be subjected to electricity, forms tripping current; The tripping current electric current self-sustaining coil TB-I that flows through makes auxiliary relay TB be in the self-sustaining state, even button TZ finishes preceding disconnection at combined floodgate, auxiliary relay TB can not return yet; Close a floodgate after the end, circuit breaker Q F often opens the attached contact (being in on-state this moment) that helps and disconnects, and tripping current is cut off, and auxiliary relay TB returns.
But there is following defective in this folding lock mode: the first, the auxiliary relay profile of voltage starting, electric current maintenance is bigger, and wiring is comparatively complicated; The second, the electric current hold-in winding will because circuit breaker is of a great variety, be unfavorable for user (power consumer and switch manufacturer) type selecting and stock according to the size customization of circuit breaker branch, switching current; Three, when external control switch (button or relay contact) when sintering occurring, can make auxiliary relay voltage starting coil charged burning often.
The utility model content
For this reason, the technical problem that technical problem to be solved in the utility model is that the auxiliary relay of voltage starting in the prior art, electric current maintenance is of a great variety, wiring is complicated, easily burns when controlling the contact adhesion, thus a kind of interchange divide-shut brake self-hold circuit of simplifying wiring, having improved the feasibility of circuit working is proposed.
For solving the problems of the technologies described above, a kind of interchange divide-shut brake self-hold circuit of the present utility model comprises:
The combined floodgate circuit, power supply is connected with the combined floodgate input terminal through the combined floodgate button, is connected with tripping operation latching relay normally-closed contact then, and its output connects conjugation position successively and detects relay normally-closed contact, combined floodgate latching relay coil and power supply terminal;
Trip circuit, power supply is connected with the tripping operation input terminal through trip button, is connected with power supply terminal with tripping operation latching relay coil successively then;
Self-hold circuit, the input of power supply terminal is connected with power supply, and its output first via is connected between combined floodgate input terminal and the tripping operation latching relay normally-closed contact by combined floodgate latching relay first contact; Output the second tunnel is connected between tripping operation input terminal and the tripping operation latching relay coil by tripping operation latching relay first contact and a jumping position detection relay normally-closed contact; The output Third Road is connected with the combined floodgate lead-out terminal by combined floodgate latching relay second contact; Output the four tunnel detects relay coil by the jumping position and is connected with the detection outlet of jumping position; Output the five tunnel is connected with the tripping operation lead-out terminal by tripping operation latching relay second contact, jumps the position and detects the two ends that relay coil is arranged on described tripping operation latching relay second contact.
Described combined floodgate lead-out terminal and described jumping position are detected outlet and are connected with the normally closed attached contact that helps of two circuit breakers in the breaker operator loop respectively.Described tripping operation lead-out terminal is often opened the attached contact that helps with the circuit breaker in the breaker operator loop and is connected.
Technique scheme of the present utility model has the following advantages compared to existing technology, and described interchange divide-shut brake self-hold circuit has been simplified external cabling, and circuit reliability is improved; Owing to do not adopt the operating current detecting element in the circuit, thereby improved the versatility of microcomputer protecting device, made things convenient for user (power consumer and switch manufacturer) type selecting and stock; When external control switch (button or relay contact) when sintering occurring, help the contact oneself disconnects because circuit breaker is attached, current vanishes, relay is in return state, can not cause burning out of relay.
Description of drawings
Content of the present utility model is easier clearly to be understood in order to make, and according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is divide-shut brake of the prior art loop;
Fig. 2 is interchange divide-shut brake self-hold circuit described in the utility model.
Embodiment
Interchange divide-shut brake self-hold circuit described in the utility model as shown in Figure 2, comprises combined floodgate circuit, trip circuit and self-hold circuit.In the combined floodgate circuit, power supply is connected with combined floodgate input terminal HZ through combined floodgate button 1SB, be connected with tripping operation latching relay normally-closed contact TBJ:2 then, its output connects conjugation position successively and detects relay normally-closed contact HWJ:1, combined floodgate latching relay coil HBJ and power supply terminal N.In the trip circuit, power supply is connected with tripping operation input terminal TZ through trip button 2SB, is connected with power supply terminal N with tripping operation latching relay coil TBJ successively then.In self-hold circuit, the input of power supply terminal L is connected with power supply, and its output first via is connected between combined floodgate input terminal HZ and the tripping operation latching relay normally-closed contact TBJ:2 by the combined floodgate latching relay first contact HBJ:1; Output the second tunnel is connected between tripping operation input terminal TZ and the tripping operation latching relay coil TBJ by the tripping operation latching relay first contact TBJ:1 and a jumping position detection relay normally-closed contact TWJ:1; The output Third Road is connected with combined floodgate lead-out terminal HQ by the combined floodgate latching relay second contact HBJ:2; Output the four tunnel detects relay coil TWJ by the jumping position and is connected with jumping position detection outlet TW; Output the five tunnel is connected with tripping operation lead-out terminal TQ by the tripping operation latching relay second contact TBJ:3, closes the position and detects the two ends that relay coil HWJ is arranged on the described tripping operation latching relay second contact TBJ:3.Described combined floodgate lead-out terminal HQ and described jumping position detect outlet TW respectively with the breaker operator loop in the normally closed attached contact QF:11 that helps of two circuit breakers be connected with QF:12, described tripping operation lead-out terminal TQ often opens the attached contact QF:21 that helps with the circuit breaker in the breaker operator loop and is connected.
Combined floodgate and the tripping operation process of above-mentioned interchange divide-shut brake self-hold circuit are as follows:
1, making process:
When switch knob 1SB connects, power supply by 101 through combined floodgate button 1SB, 103, combined floodgate input terminal HZ, tripping operation latching relay TBJ:2 normally closed point, close normally closed some HWJ:1 of a detection relay, combined floodgate latching relay HBJ coil, power supply terminal N to 102, form the loop, start the combined floodgate latching relay.Combined floodgate latching relay contact HBJ:1 connects, HBJ:2 connects.Power supply by 101 through power supply terminal L, combined floodgate latching relay HBJ:1, tripping operation latching relay TBJ:2 normally closed point, close normally closed some HWJ:1 of a detection relay, combined floodgate latching relay HBJ coil terminals N to 102, form the combined floodgate self-sustaining.Power supply to 102, forms the loop by 101 through power supply terminal L, combined floodgate latching relay contact HBJ:2, combined floodgate lead-out terminal HQ, 107, normally closed attached contact QF:11, the breaker closing coil LC of helping of circuit breaker, and circuit breaker is carried out closing operation.If button 1SB finishes preceding disconnection at combined floodgate, relay HBJ can not return yet.After combined floodgate finishes, circuit breaker is often opened the attached contact QF:21 that helps and is connected, power supply by 101 through power supply terminal L, close the position detect a relay coil HWJ, a tripping operation lead-out terminal TQ, 137, circuit breaker often open attachedly help contact QF:21(oneself connect), circuit breaker trip coil LT to 102, form the loop.Detect relay coil HWJ resistance value up to 30K Ω owing to close the position, and circuit breaker trip coil LT resistance value starts so close a detection relay HWJ less than 200 Ω, circuit breaker trip coil LT does not start.Close a relay normally-closed contact HWJ:1 and disconnect, combined floodgate latching relay HBJ returns, and making process finishes.
2, tripping operation process:
When circuit breaker was in closing position, the attached contact QF:21 that helps that often opens that connects with breaking coil connected.Under this state, if when trip button 2SB connects, power supply to 102, forms the loop by 101 through trip button 2SB, 133, tripping operation input terminal TZ, tripping operation latching relay coil TBJ, power supply terminal N.Tripping operation latching relay contact TBJ:1 connects, TBJ:2 disconnects, TBJ:3 connects.Power supply detects relay normally-closed contact TWJ:1, tripping operation latching relay TBJ coil, power supply terminal N to 102 by 101 through power supply terminal L, TBJ:1, jumping position, forms the tripping operation self-sustaining.Power supply by 101 through power supply terminal L, tripping operation latching relay contact TBJ:3, tripping operation lead-out terminal TQ, 137, circuit breaker often open attached help contact QF:21(this moment oneself connect), circuit breaker trip coil LT, to 102, form the loop, circuit breaker is carried out trip operation.After tripping operation finishes, the normally closed attached contact QF:12 that helps of circuit breaker connects, power supply by 101 through power supply terminal L, jump the position detect a relay coil TWJ, jump the position detect an outlet TW, 108, circuit breaker normally closedly attachedly help contact QF:12, to 102, form the loop, start and jump a position detection relay.Jump position detection relay normally-closed contact TWJ:1 and disconnect, the tripping operation self-sustaining is removed, and the tripping operation process finishes.
In the said process, tripping operation is preferential, in making process, the combined floodgate self-hold circuit starts, and then start tripping operation latching relay if any the trip signal input this moment, its normally-closed contact TBJ:2 disconnects, and combined floodgate latching relay coil HBJ dead electricity is returned, and finishes closing operation.
Interchange divide-shut brake self-hold circuit described in the utility model has been simplified external cabling, and circuit reliability is improved; Owing to do not adopt the operating current detecting element in the circuit, thereby improved the versatility of microcomputer protecting device, made things convenient for user (power consumer and switch manufacturer) type selecting and stock; When external control switch (button or relay contact) when sintering occurring, help the contact oneself disconnects because circuit breaker is attached, current vanishes, relay is in return state, can not cause burning out of relay.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the invention.
Claims (3)
1. one kind exchanges the divide-shut brake self-hold circuit, it is characterized in that, comprising:
The combined floodgate circuit, power supply is connected with the combined floodgate input terminal through the combined floodgate button, is connected with tripping operation latching relay normally-closed contact then, and its output connects conjugation position successively and detects relay normally-closed contact, combined floodgate latching relay coil and power supply terminal;
Trip circuit, power supply is connected with the tripping operation input terminal through trip button, is connected with power supply terminal with tripping operation latching relay coil successively then;
Self-hold circuit, the input of power supply terminal is connected with power supply, and its output first via is connected between combined floodgate input terminal and the tripping operation latching relay normally-closed contact by combined floodgate latching relay first contact; Output the second tunnel is connected between tripping operation input terminal and the tripping operation latching relay coil by tripping operation latching relay first contact and a jumping position detection relay normally-closed contact; The output Third Road is connected with the combined floodgate lead-out terminal by combined floodgate latching relay second contact; Output the four tunnel detects relay coil by the jumping position and is connected with the detection outlet of jumping position; Output the five tunnel is connected with the tripping operation lead-out terminal by tripping operation latching relay second contact, jumps the position and detects the two ends that relay coil is arranged on described tripping operation latching relay second contact.
2. interchange divide-shut brake self-hold circuit according to claim 1 is characterized in that, described combined floodgate lead-out terminal and described jumping position are detected outlet and be connected with the normally closed attached contact that helps of two circuit breakers in the breaker operator loop respectively.
3. interchange divide-shut brake self-hold circuit according to claim 1 and 2 is characterized in that, described tripping operation lead-out terminal is often opened the attached contact that helps with the circuit breaker in the breaker operator loop and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071286 CN203039358U (en) | 2013-02-07 | 2013-02-07 | An AC brake opening and closing self-holding circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071286 CN203039358U (en) | 2013-02-07 | 2013-02-07 | An AC brake opening and closing self-holding circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039358U true CN203039358U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320071286 Expired - Lifetime CN203039358U (en) | 2013-02-07 | 2013-02-07 | An AC brake opening and closing self-holding circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039358U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019137A (en) * | 2016-07-19 | 2016-10-12 | 南宏电力科技有限公司 | Switch state detecting circuit of protective relaying device |
| CN109933042A (en) * | 2017-12-19 | 2019-06-25 | 上海亿盟电气自动化技术有限公司 | A kind of convenient test equipment of power supply automated conversion system controller |
-
2013
- 2013-02-07 CN CN 201320071286 patent/CN203039358U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019137A (en) * | 2016-07-19 | 2016-10-12 | 南宏电力科技有限公司 | Switch state detecting circuit of protective relaying device |
| CN106019137B (en) * | 2016-07-19 | 2018-07-27 | 南宏电力科技有限公司 | A kind of switch condition detection circuit of protective relaying device |
| CN109933042A (en) * | 2017-12-19 | 2019-06-25 | 上海亿盟电气自动化技术有限公司 | A kind of convenient test equipment of power supply automated conversion system controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NANHONG ELECTRIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHEJIANG NANRUI ELECTRIC POWER AUTOMATION CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Xinguang industrial zone of Liushi town of Yueqing city of Zhejiang Province, Wenzhou City, 325604 Patentee after: NAHO ELECTRIC POWER TECHNOLOGY Co.,Ltd. Address before: CHINT Road, Xinguang industrial zone of Liushi town of Yueqing city of Zhejiang Province, Wenzhou City, 325604 Patentee before: Zhejiang Nanrui Electric Power Automation Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| CX01 | Expiry of patent term |