CN101826719A - Trip-proof lockout microcomputer protection system - Google Patents
Trip-proof lockout microcomputer protection system Download PDFInfo
- Publication number
- CN101826719A CN101826719A CN201010186086A CN201010186086A CN101826719A CN 101826719 A CN101826719 A CN 101826719A CN 201010186086 A CN201010186086 A CN 201010186086A CN 201010186086 A CN201010186086 A CN 201010186086A CN 101826719 A CN101826719 A CN 101826719A
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- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims description 3
- 239000013642 negative control Substances 0.000 claims description 3
- 239000013641 positive control Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Abstract
The invention discloses a trip-proof lockout microcomputer protection system, which comprises a power source, a control device, a closing circuit, a tripping circuit, a breaker normally closed auxiliary contact, a breaker normally open auxiliary contact and a detection device, wherein the closing circuit is provided with a trip-proof lockout relay and an input circuit; the control device receives a detection signal of the detection device and a voltage signal acquired by the input circuit; and when the detection signal indicates that a primary circuit works abnormally or the input circuit detects voltage, the control device sends a fault lockout instruction or low-voltage lockout instruction or strip-proof lockout instruction to control the trip-proof lockout relay to work, so that a relay normally closed contact is disconnected and locked in the state. Compared with the traditional single hardware implementing method, the software and hardware combining method of the invention has the advantages of low cost, small product volume, good commonality, long service life and perfect functions.
Description
Technical field
The present invention relates to the application facet of microcomputer protecting device and secondary control loop, particularly trip-proof lockout microcomputer protection system.
Background technology
In breaker control circuit, if the combined floodgate switch occurs because of damaging or other reason causes the contact to glue dead situation, can cause after break down in the loop so next time that circuit breaker trips repeatedly, feed motion, the phenomenon of this circuit breaker " jump " can cause serious harm to whole primary circuit, cause mechanism's damage easily, even cause the blast of circuit breaker, therefore must stop this situation and take place with trip-preventing circuit.
The locking closing function is meant that when primary equipment breaks down under the situation of not fixing a breakdown, misoperation combined floodgate switch causes that fault takes place once more for fear of the staff, sends the temporary transient function that disconnects closing circuit of instruction by microcomputer protecting device.
Traditional structure that microcomputer protection system adopted is with reference to Fig. 1; it need use two relays when realizing anti-jump function; the locking closing function also needs to use a relay; and be provided with components and parts such as a large amount of rectifications relevant, step-down, current limliting with relay; therefore the component number that this structure comprised is more; have that cost of manufacture height, small product size are big, the flimsy shortcoming of element, versatility is poor.In addition, the insufficiency of function of this product, when the decompression of primary circuit, device can not be realized the corresponding interlocking function.
Summary of the invention
For addressing the above problem, the invention provides that a kind of cost of manufacture is low, versatility good, the trip-proof lockout microcomputer protection system of telotism.
The technical scheme that the present invention is adopted for its problem of solution is:
A kind of trip-proof lockout microcomputer protection system; comprise a device power supply and the control device of under the power supply of device power supply, working; be used to control the closing circuit of breaker closing and tripping operation action and trip(ping) circuit and carry out circuit breaker normally closed auxiliary contact and circuit breaker that switch switches according to circuit-breaker status and often drive auxiliary contact; described device power supply; closing circuit; trip(ping) circuit is connected between positive control bus and the negative control bus; this protection system also comprises the checkout gear that is used to detect primary circuit electric current and voltage swing; described closing circuit comprises the combined floodgate switch and the outlet of closing a floodgate; described closing circuit is provided with the trip-proof lockout relay and opens into the amount loop; described trip-proof lockout relay comprises the relay normally-closed contact; relay normally open contact; described relay normally-closed contact is serially connected with the combined floodgate switch and closes a floodgate between the outlet; relay normally open contact be connected in series into the amount loop that resulting loop is connected to the relay normally-closed contact and the two ends, serial connection loop of the outlet of closing a floodgate with opening again after circuit breaker is often opened the auxiliary contact parallel connection; the detection signal of described control device receiving detection device and open the voltage signal of being gathered into the amount loop; when detection signal shows that primary circuit work is undesired or opens when detecting voltage into the amount loop; control device sends failure locking instruction or low-voltage dead lock instruction or trip-proof lockout instruction; the work of control trip-proof lockout relay makes the relay normally-closed contact disconnect and locks this state.
Preferably, control device produces corresponding message simultaneously when sending failure locking reclosing command or trip-proof lockout combined floodgate, and this message shows on control device and teletransmission.
Wherein, the control device that meets the following conditions down at the same time sends and is used to remove the unlock command that the relay normally-closed contact disconnects lock-out state:
A, open into the amount loop and do not detect voltage;
B, control device receive slot signal or control device stops the failure locking instruction;
The line voltage of c, primary circuit stops the low-voltage dead lock instruction greater than 1.1 times low-voltage definite value or control device.
Further, control device produces message when sending unlock command and trip-proof lockout relay regular event, and this message shows on control device and teletransmission.
The invention has the beneficial effects as follows: the present invention can replace traditional pure hardware circuit implementation method by software and hardware combining, and it has the following advantages:
1, save cost: trip-proof lockout relay of anti-jump function of the present invention and locking combined floodgate functional utilization is realized, components and parts such as a plurality of relays and the rectification relevant, step-down, current limliting have been saved with relay, only increased by a switch input variable loop, cost significantly reduces;
2, circuit is simple, it is little to take up room, applied widely: owing to simplified the inner control circuit of device, do not need each relay to add these components and parts of rectifier bridge, diode and resistance, the space that takies product is very little, so small product size can remain in the minimum scope;
3, broken through the bottleneck that traditional trip-preventing circuit repeat circuit is subjected to voltage limit, versatility is good: the trip-preventing circuit among the present invention has thoroughly solved the inconsistent restricted problem of controlled supply voltage, DC-AC two-use and be applicable to various electric pressures among 24V ~ 220V, the user no longer needs to indicate the electric pressure of control loop when buying product, and in use controls power source voltage and also can change on a large scale;
4, circuit reduces many elements, reduce the potential fault point of product: current-limiting resistance is to be easy to be subjected to environment, variations in temperature and the element that changes resistance, and rectifier bridge, diode all are breakdown elements easily, the present invention can save these elements fully, therefore can significantly reduce the quantity of incipient fault point, guarantee to have sufficiently long useful life;
5, perfect in shape and function: cooperate checkout gear, the present invention can in time detect the operating state of primary circuit, and when brownout or circuit broke down, control device also can be realized blocking function, so it has quite complete function setting.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the circuit theory diagrams that traditional microcomputer protection system adopted;
Fig. 2 is the circuit theory diagrams of microcomputer protection system of the present invention;
Fig. 3 sends the logic diagram of blocking order for control device;
Fig. 4 sends the logic diagram of unlock command for control device.
Embodiment
With reference to Fig. 2 to Fig. 3; a kind of trip-proof lockout microcomputer protection system of the present invention; comprise a device power supply 1 and the control device 2 of under the power supply of device power supply, working; be used to control the closing circuit 3 of breaker closing and tripping operation action and trip(ping) circuit 4 and carry out circuit breaker normally closed auxiliary contact DL1 and circuit breaker that switch switches according to circuit-breaker status and often open auxiliary contact DL2; usually; when circuit breaker disconnects; the DL1 closure; DL2 disconnects; when circuit breaker closing fashionable; DL1 disconnects; the DL2 closure; described device power supply 1; closing circuit 3; trip(ping) circuit 4 is connected between positive control bus+KM/L and the negative control bus-KM/N; this protection system also comprises the checkout gear 5 that is used to detect primary circuit electric current and voltage swing; described closing circuit 3 comprises combined floodgate K switch K1-2 and the outlet 6 of closing a floodgate; protection protection reclosing exports HJ etc. in addition; the outlet 6 of closing a floodgate is formed by circuit breaker normally closed auxiliary contact DL1 and closing coil HQ serial connection; when closing circuit 3 energisings; closing coil HQ work; breaker closing; trip(ping) circuit 4 comprises fixed trip switch KK11-12; tripping operation outlet 7 and protection tripping operation outlet TJ; tripping operation outlet 7 is formed by circuit breaker normally opened contact DL2 and breaking coil TQ serial connection; when trip(ping) circuit 4 energisings; breaking coil TQ work, circuit breaker trip.
Carry out locking for the outlet that prevents to trip repeatedly and to closing circuit 3, closing circuit 3 is provided with the trip-proof lockout relay and opens into amount loop KR, described trip-proof lockout relay comprises relay normally-closed contact TBJ-2, relay normally open contact TBJ-1, described relay normally-closed contact TBJ-2 is serially connected with combined floodgate K switch K1-2 and closes a floodgate between the outlet 6, relay normally open contact TBJ-1 be connected in series into amount loop KR that resulting loop is connected to relay normally-closed contact TBJ-2 and the two ends, serial connection loop of the outlet 6 of closing a floodgate with opening again after circuit breaker is often opened auxiliary contact DL1 parallel connection, the detection signal of described control device 2 receiving detection devices 5 and open the voltage signal of being gathered into amount loop KR, wherein open the voltage that is used to detect self two ends into amount loop KR, and send different opening to control device 2 into the amount signal according to the different voltage condition in two ends.
With reference to Fig. 3, suppose that sticking dead situation appears in KK1-2 or HJ, behind circuit breaker trip, the KR two ends can be detected and obtain voltage, this moment, KR was " 1 " (otherwise being " 0 ") to opening into amount of control device 1 output, control device 2 leaves into the value of amount according to this and judges that gluing extremely appears in KK1-2 or HJ, sends anti-jump reclosing command, makes TBJ-2 disconnect; In addition, the test point of checkout gear 5 is distributed in each position of primary circuit, certain parameter that obtains the primary circuit when detection is undesired, for example certain position goes out that line current is excessive or too small, overtension or too small etc., control device 2 can according to the signal that checkout gear 5 is sent into judge the primary circuit fault or circuit supply undesired, thereby send failure locking instruction or low-voltage dead lock instruction, also can make TBJ-2 disconnect; TBJ-2 disconnects back control device 2 can make TBJ-2 continue to remain on this state, sends unlock command up to control device 2 and makes the TBJ-2 closure, thereby can avoid fault to take place once more.
As preferred embodiment; control device 2 produces corresponding message simultaneously when sending failure locking reclosing command or trip-proof lockout combined floodgate; this message shows on control device 2 and teletransmission; utilize this message user to be convenient in time to its place under repair apace from on-the-spot or the long-range malfunction of recognizing protection system.
With reference to Fig. 4, the control device 2 that meets the following conditions down at the same time sends and is used to remove the unlock command that relay normally-closed contact TBJ-2 disconnects lock-out state:
A, open into amount loop KR and do not detect voltage, open the signal that outputs to control device 2 into amount loop KR this moment and be " 0 ";
B, control device 2 receive slot signal or control device 2 stops the failure locking instruction, usually, this involution button is arranged on the control device 2, the user can be manually to its operation, after having determined that fault is eliminated, the user can send slot signal to control device 2 by the involution button, and certainly, control device 2 also can stop to send the failure locking instruction according to detection signal automatically;
The line voltage of c, primary circuit stops the low-voltage dead lock instruction greater than 1.1 times low-voltage definite value or control device 2; when the line voltage of primary circuit is lower than the low-voltage definite value; primary circuit work is undesired or operating efficiency is extremely low very easily breaks down, thus this condition the generation that can effectively avoid this situation is set.
After control device 2 sends unlock command, anti-trip relay can the prerequisite of regular event under, TBJ-2 can be returned to closed state again.
Same as preferred embodiment; control device 2 produces message when sending unlock command and trip-proof lockout relay regular event; this message shows on control device 2 and teletransmission; utilize this message user can be apace from on-the-spot or the long-range released state of recognizing protection system, determine that system replys normal operating state.
The above only is a preferred implementation of the present invention, should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (4)
1. trip-proof lockout microcomputer protection system; comprise a device power supply (1) and the control device (2) of under the power supply of device power supply, working; be used to control the closing circuit (3) of breaker closing and tripping operation action and trip(ping) circuit (4) and often drive auxiliary contact (DL2) according to circuit breaker normally closed auxiliary contact (DL1) and circuit breaker that circuit-breaker status carries out the switch switching; described device power supply (1); closing circuit (3); trip(ping) circuit (4) be connected to the positive control bus (+KM/L) and negative control bus (KM/N); described closing circuit (3) comprises combined floodgate switch (KK1-2) and the outlet (6) of closing a floodgate; it is characterized in that this protection system also comprises the checkout gear (5) that is used to detect primary circuit electric current and voltage swing; described closing circuit (3) is provided with the trip-proof lockout relay and opens into amount loop (KR); described trip-proof lockout relay comprises relay normally-closed contact (TBJ-2); relay normally open contact (TBJ-1); described relay normally-closed contact (TBJ-2) is serially connected with combined floodgate switch (KK1-2) and closes a floodgate between the outlet (6); relay normally open contact (TBJ-1) be connected in series into amount loop (KR) that resulting loop is connected to relay normally-closed contact (TBJ-2) and the two ends, serial connection loop of the outlet (6) of closing a floodgate with opening again after circuit breaker is often opened auxiliary contact (DL1) parallel connection; the detection signal of described control device (2) receiving detection device (5) and open the voltage signal of being gathered into amount loop (KR); when detection signal shows that primary circuit work is undesired or open into amount loop (KR) when detecting voltage; control device (2) sends failure locking instruction or low-voltage dead lock instruction or trip-proof lockout instruction; the work of control trip-proof lockout relay makes relay normally-closed contact (TBJ-2) disconnect and locks this state.
2. a kind of trip-proof lockout microcomputer protection system according to claim 1; it is characterized in that control device (2) produces corresponding message simultaneously when sending failure locking reclosing command or trip-proof lockout combined floodgate, this message is gone up at control device (2) and is shown and teletransmission.
3. a kind of trip-proof lockout microcomputer protection system according to claim 1, the control device (2) that it is characterized in that meeting the following conditions down at the same time sends and is used to remove the unlock command that relay normally-closed contact (TBJ-2) disconnects lock-out state:
A, open into amount loop (KR) and do not detect voltage;
B, control device (2) receive slot signal or control device (2) stops the failure locking instruction;
The line voltage of c, primary circuit stops the low-voltage dead lock instruction greater than 1.1 times low-voltage definite value or control device (2).
4. a kind of trip-proof lockout microcomputer protection system according to claim 3 is characterized in that control device (2) produces message when sending unlock command and trip-proof lockout relay regular event, and this message is gone up at control device (2) and shown and teletransmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101860863A CN101826719B (en) | 2010-05-29 | 2010-05-29 | Trip-proof lockout microcomputer protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101860863A CN101826719B (en) | 2010-05-29 | 2010-05-29 | Trip-proof lockout microcomputer protection system |
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| Publication Number | Publication Date |
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| CN101826719A true CN101826719A (en) | 2010-09-08 |
| CN101826719B CN101826719B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101860863A Active CN101826719B (en) | 2010-05-29 | 2010-05-29 | Trip-proof lockout microcomputer protection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098439A (en) * | 2016-07-12 | 2016-11-09 | 福州大学 | Circuit-breaker switching on-off electric magnet intelligent control module |
| CN108649543A (en) * | 2018-05-25 | 2018-10-12 | 贵州万峰电力股份有限公司 | Based on the interlocking high voltage connector device for preventing unwanted operation of relay |
| CN111123695A (en) * | 2019-12-10 | 2020-05-08 | 安徽合凯电气科技股份有限公司 | Interlocking type misoperation prevention control system |
| CN112147498A (en) * | 2020-09-23 | 2020-12-29 | 广州市扬新技术研究有限责任公司 | Module for monitoring and controlling direct current breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296083Y (en) * | 1997-05-28 | 1998-10-28 | 秦文波 | High voltage circuit short-circuit fault protector |
| CN2355486Y (en) * | 1998-12-17 | 1999-12-22 | 长沙市精密仪器厂 | Dispersed computer remote protector for electric substation |
| CN201323443Y (en) * | 2008-12-08 | 2009-10-07 | 中国空分设备有限公司 | Miss trip protector |
-
2010
- 2010-05-29 CN CN2010101860863A patent/CN101826719B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296083Y (en) * | 1997-05-28 | 1998-10-28 | 秦文波 | High voltage circuit short-circuit fault protector |
| CN2355486Y (en) * | 1998-12-17 | 1999-12-22 | 长沙市精密仪器厂 | Dispersed computer remote protector for electric substation |
| CN201323443Y (en) * | 2008-12-08 | 2009-10-07 | 中国空分设备有限公司 | Miss trip protector |
Non-Patent Citations (1)
| Title |
|---|
| 《继电器》 20051016 高翔，刘韶俊 继电保护状态检修及实施探讨 23-27 1-4 第33卷, 第20期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098439A (en) * | 2016-07-12 | 2016-11-09 | 福州大学 | Circuit-breaker switching on-off electric magnet intelligent control module |
| CN108649543A (en) * | 2018-05-25 | 2018-10-12 | 贵州万峰电力股份有限公司 | Based on the interlocking high voltage connector device for preventing unwanted operation of relay |
| CN111123695A (en) * | 2019-12-10 | 2020-05-08 | 安徽合凯电气科技股份有限公司 | Interlocking type misoperation prevention control system |
| CN111123695B (en) * | 2019-12-10 | 2022-04-19 | 安徽合凯电气科技股份有限公司 | Interlocking type misoperation prevention control system |
| CN112147498A (en) * | 2020-09-23 | 2020-12-29 | 广州市扬新技术研究有限责任公司 | Module for monitoring and controlling direct current breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101826719B (en) | 2012-07-18 |
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