CN110148545B - Emergency brake-separating time-delay restarting device of permanent magnet circuit breaker - Google Patents
Emergency brake-separating time-delay restarting device of permanent magnet circuit breaker Download PDFInfo
- Publication number
- CN110148545B CN110148545B CN201910535314.4A CN201910535314A CN110148545B CN 110148545 B CN110148545 B CN 110148545B CN 201910535314 A CN201910535314 A CN 201910535314A CN 110148545 B CN110148545 B CN 110148545B
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- circuit breaker
- contact
- control
- permanent magnet
- contactor
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- 238000001514 detection method Methods 0.000 claims abstract description 32
- 230000005389 magnetism Effects 0.000 claims abstract 3
- 230000009471 action Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
-
- 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
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Keying Circuit Devices (AREA)
Abstract
The utility model provides a permanent magnetism breaker promptly breaks brake delay and moves device again, relates to power equipment control protection field, has solved the problem that permanent magnetism breaker body tripping control return circuit became invalid and causes the circuit breaker to refuse to jump. The invention relates to a permanent magnet breaker emergency brake-separating delay restarting device, which mainly comprises: the device comprises a miniature circuit breaker, a control contactor, a first resistor, a second resistor, a diode, a detection control unit, an alarm relay, an alarm indicator lamp and a self-resetting button. When the permanent magnetic circuit breaker works normally, the permanent magnetic circuit breaker will be isolated by itself, and the normal operation of the permanent magnetic circuit breaker is not affected. When the permanent magnetic circuit breaker fails to operate, the permanent magnetic circuit breaker can be directly operated to trip, the tripping strength is increased to be more than 2 times of the normal strength, the permanent magnetic circuit breaker can be ensured to finish tripping, and the device has the functions of alarming output, alarming indication, closing locking and the like.
Description
Technical Field
The invention relates to the technical field of control and protection of power equipment, in particular to an emergency brake-separating time-delay restarting device of a permanent magnet circuit breaker.
Background
The circuit breaker refusing action is a problem always facing the whole power industry, and the problem of exposure is more and more increased along with the increase of the service life of the vacuum circuit breaker, the circuit breaker refusing action not only can cause the fault shutdown of a transformer substation and influence the normal production and the life electricity utilization, but also can damage related electric equipment, so that huge economic loss is brought to the power enterprise, and the circuit breaker 'refusing trip' can cause the tripping of the circuit breaker at the upper stage, which is called as 'override trip'. This will expand the scope of accident blackouts and even sometimes lead to system disconnection, resulting in a massive blackout incident. Therefore, "hop-refusal" is more dangerous than "refuse-closing".
Currently, existing safety protection devices are only suitable for spring operated circuit breakers, but not for permanent magnet circuit breakers. And because the tripping and closing coils of the spring-operated circuit breaker cannot be electrified for a long time, the existing safety protection device mainly aims to protect the tripping and closing coils from being burnt. In addition, the existing safety protection device can perform secondary operation of the circuit breaker after the circuit breaker fails, but still utilizes the original tripping and closing circuit of the circuit breaker to control, and does not play any role after the tripping and closing circuit of the circuit breaker fails.
Disclosure of Invention
The invention provides an emergency brake-separating time-delay restarting device of a permanent magnet circuit breaker, which aims to solve the problem of circuit breaker trip rejection caused by failure of a tripping control loop of the permanent magnet circuit breaker body.
The technical scheme adopted by the invention for solving the problems is as follows:
The invention relates to a permanent magnet breaker emergency brake-separating delay restarting device, which comprises: the device comprises a miniature circuit breaker, a control contactor, a first resistor, a second resistor, a diode, a detection control unit, an alarm relay, an alarm indicator lamp and a self-resetting button;
Two contacts of the miniature circuit breaker are respectively connected with a bus DC+ end and a bus DC-end;
the first contact, the second resistor, the permanent magnet breaker mechanism coil, the first resistor and the second contact of the control contactor are sequentially connected in series and then connected in parallel at two ends of the miniature breaker;
The external tripping signal of the switch cabinet is connected with a diode, the other end of the diode is connected with a detection control unit,
The first control contact of the detection control unit is connected with the first contact of the control contactor, the other end of the detection control unit is connected with the standby auxiliary contact of the permanent magnetic circuit breaker, and the standby auxiliary contact of the permanent magnetic circuit breaker is connected with the second contact of the control contactor;
One end of a coil of the control contactor is connected with a standby auxiliary contact of the permanent magnetic circuit breaker, the standby auxiliary contact of the permanent magnetic circuit breaker is connected with a second contact of the control contactor, the other end of the coil of the control contactor is connected with a second control contact of the detection control unit, and the second control contact of the detection control unit is connected with a first contact of the control contactor;
The self-resetting button, the first contact of the alarm relay and the coil of the alarm relay are connected in series, the third contact of the control contactor is connected in parallel with the two ends of the first contact of the alarm relay, the alarm indicator lamp in the self-resetting button indicator lamp is connected in parallel with the two ends of the coil of the alarm relay, the self-resetting button is connected with the first contact of the control contactor, and the coil of the alarm relay is connected with the second contact of the control contactor;
Two ends of a second contact of the alarm relay are respectively connected with a switch cabinet terminal block;
and two ends of a fourth contact of the control contactor are respectively connected with the switch cabinet external control loop.
Further, RX20-25W-5 omega is adopted for the first resistor.
Further, the second resistor adopts RX20-25W-5 omega.
Further, the detection control unit adopts HHS5C-A
The beneficial effects of the invention are as follows:
1. The emergency brake-separating delay reactivating device of the permanent magnet circuit breaker is used as a backup tripping device, namely a device capable of operating the permanent magnet circuit breaker to forcedly separate the brake when the brake separation of the permanent magnet circuit breaker is abnormal, and is mainly realized by key technologies of delay detection, delay reactivating, tripping strength improvement, direct acting on a final operating coil and the like.
2. When the device detects an external tripping signal and delays to detect the refusal of the permanent magnetic circuit breaker, all control loops of the original permanent magnetic circuit breaker are eliminated, a power supply is directly applied to a final core operating mechanism of the permanent magnetic circuit breaker, namely a mechanism coil of the permanent magnetic circuit breaker, the tripping strength is increased to be more than 2 times of the normal strength, and the permanent magnetic circuit breaker is ensured to finish tripping finally.
3. When the permanent magnetic circuit breaker works normally, the device can be isolated by itself, and the normal operation of the permanent magnetic circuit breaker is not affected.
4. When the permanent magnetic circuit breaker refuses to operate, the device can directly operate the permanent magnetic circuit breaker to trip, and the tripping strength is improved to be more than 2 times of the normal strength, so that the permanent magnetic circuit breaker can finally complete tripping, and the device has the functions of alarming output, alarming indication, closing and locking and the like.
5. The emergency brake-separating delay restarting device of the permanent magnet circuit breaker is simple in installation mode and operation.
Drawings
Fig. 1 is an electrical schematic diagram of the emergency brake-off delay restarting device of the permanent magnet circuit breaker.
In the figure: ZK, miniature circuit breaker, KM1, control contactor, 1L1-2T1, first contact, 4T2-3L2, second contact, 13NO-14NO, third contact, 5T3-6L3, fourth contact, R 1, first resistor, R 2, second resistor, L, permanent magnet circuit breaker mechanism coil, QF, reserve auxiliary contact, D, diode, KT, detection control unit, KT-1, first control contact, KT-2, second control contact, KJ1, alarm relay, RD1, alarm indicator, RD2, self-resetting button.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention relates to a permanent magnet breaker emergency brake-separating delay restarting device, which mainly comprises: the device comprises a power supply circuit, a detection control loop, a tripping control loop and a reactivation alarm indication loop.
As shown in fig. 1, the emergency brake-separating delay restarting device of the permanent magnet circuit breaker mainly comprises: the miniature circuit breaker ZK, the control contactor KM1, the first contact 1L1-2T1, the second contact 4T2-3L2, the third contact 13NO-14NO, the fourth contact 5T3-6L3, the first resistor R 1, the second resistor R 2, the diode D, the detection control unit KT, the first control contact KT-1, the second control contact KT-2, the alarm relay KJ1, the alarm indicator RD1 and the self-resetting button RD2.
The first contact 1-2 of the miniature circuit breaker ZK is connected with the DC+ end of the bus through +1KM, and the first contact 3-4 of the miniature circuit breaker ZK is connected with the DC-end of the bus through-1 KM.
The first contacts 1L1-2T1 of the control contactor KM1, the second resistor R 2, the permanent magnet breaker mechanism coil L, the first resistor R 1 and the second contacts 4T2-3L2 of the control contactor KM1 are connected in series in sequence and then connected in parallel at two ends of the miniature breaker ZK. The 2 (-) end of the permanent magnetic circuit breaker mechanism coil L is connected with the second resistor R 2, and the 1 (+) end of the permanent magnetic circuit breaker mechanism coil L is connected with the first resistor R 1.
The external tripping signal of the switch cabinet is connected with a diode D, the other end of the diode D is connected with a detection control unit KT, a first control contact KT-1 of the detection control unit KT is connected with a first contact 1L1-2T1 of a control contactor KM1, the other end of the detection control unit KT is connected with a standby auxiliary contact QF of a permanent magnet circuit breaker, and the standby auxiliary contact QF of the permanent magnet circuit breaker is connected with a second contact 4T2-3L2 of the control contactor KM 1. The loop is a detection control loop for detecting an external trip signal.
One end of a coil A1-A2 of the control contactor KM1 is connected with a standby auxiliary contact QF of the permanent magnet circuit breaker, the standby auxiliary contact QF of the permanent magnet circuit breaker is connected with a second contact 4T2-3L2 of the control contactor KM1, the other end of the coil A1-A2 of the control contactor KM1 is connected with a second control contact KT-2 of the detection control unit KT, and the second control contact KT-2 of the detection control unit KT is connected with a first contact 1L1-2T1 of the control contactor KM 1. This loop is a trip control loop for corresponding control of the external trip signal.
The self-resetting button RD2 in the self-resetting button indicator lamp, the first contact 1-2 of the alarm relay KJ1 and the coil 5-6 of the alarm relay KJ1 are connected in series, the third contact 13NO-14NO of the control contactor KM1 is connected in parallel with the two ends of the first contact 1-2 of the alarm relay KJ1, the alarm indicator lamp RD1 in the self-resetting button indicator lamp is connected in parallel with the two ends of the coil 5-6 of the alarm relay KJ1, the self-resetting button RD2 is connected with the first contact 1L1-2T1 of the control contactor KM1, and the coil 5-6 of the alarm relay KJ1 is connected with the second contact 4T2-3L2 of the control contactor KM 1. The loop is a heavy-duty alarm indication loop and is used for heavy-duty alarm indication.
Two ends of the second contact 3-4 of the alarm relay KJ1 are respectively connected with a terminal block of the switch cabinet, and the alarm relay is a heavy-duty alarm output loop.
Two ends of a fourth contact 5T3-6L3 of the control contactor KM1 are respectively connected with a switch cabinet closing control loop, and the fourth contact 5T3-6L3 of the control contactor KM1 is a closing locking contact.
In this embodiment, the first resistor R 1 is RX20-25W-5 omega, the second resistor R 2 is RX20-25W-5 omega,
In the present embodiment, the detection control unit KT employs se:Sub>A time relay HHS 5C-se:Sub>A.
The miniature circuit breaker ZK, the first resistor R 1 and the second resistor R 2 respectively have the following functions: the miniature circuit breaker ZK is used for preventing the device from being burnt out due to short circuit of a power supply circuit of the device, the first resistor R 1 is used for limiting current, and the second resistor R 2 is used for limiting current.
The invention relates to a permanent magnet breaker emergency brake-separating delay restarting device, which mainly adopts the following working principle:
When the micro breaker ZK is closed, the whole heavy-duty device is in a ready state.
The restarting device starts to collect an external tripping signal in the switch cabinet, the diode D is used for backstop, the detection control unit KT detects the external tripping signal, the first control contact KT-1 is closed in advance, and the restarting device is used for self-holding after the external tripping signal disappears; meanwhile, the detection control unit KT detects the action state of the permanent magnetic circuit breaker, when the permanent magnetic circuit breaker normally acts, the standby auxiliary contact QF of the permanent magnetic circuit breaker is switched from being closed to being opened, a monitoring loop of the detection control unit KT is cut off, the detection control unit KT releases the closing of the first control contact KT-1, and the action is released and does not participate in the normal tripping action of the permanent magnetic circuit breaker.
When the tripping action of the permanent magnetic circuit breaker is abnormal, the permanent magnetic circuit breaker does not complete the tripping action within the specified tripping action time, the detection control unit KT controls the second control contact KT-2 to be closed, drives and controls the coil A1-A2 of the contactor KM1 to be conducted, controls the first contact 1L1-2T1 of the contactor KM1 to be closed, the second contact 4T2-3L2 to be closed, the third contact 13NO-14NO to be closed and the fourth contact 5T3-6L3 to be opened, and simultaneously completes the functions of the permanent magnetic circuit breaker such as opening control, the re-movement alarm indication, the re-movement alarm output and the closing loop locking.
The third contact 13NO-14NO of the contactor KM1 is controlled to be closed, the coil 5-6 of the alarm relay KJ1 is driven to act, the first contact 1-2 of the alarm relay KJ1 is controlled to be closed, and the self-locking function of an alarm loop is completed; the alarm indicator lamp RD1 is turned on by extinguishing, the second contact 3-4 of the alarm relay KJ1 is closed, and a warning signal is sent out to prompt the abnormal operation of the permanent magnetic circuit breaker.
When the tripping action of the permanent magnetic circuit breaker is completed, the device automatically resets, simultaneously releases the closing loop, controls the fourth contact 5T3-6L3 (closing contact) of the contactor KM1 to restore to the closed state, but does not release the alarm indication and the alarm output, because the action of the device indicates that the tripping action of the permanent magnetic circuit breaker is abnormal, the self-resetting button RD2 needs to be manually pressed to open the contact NC-C, and the alarm reset of the device is completed.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (4)
1. The utility model provides a permanent magnetism circuit breaker promptly breaks brake delay and moves device, its characterized in that includes: the miniature circuit breaker (ZK), a control contactor (KM 1), a first resistor (R 1), a second resistor (R 2), a diode (D), a detection control unit (KT), an alarm relay (KJ 1), an alarm indicator lamp (RD 1) and a self-resetting button (RD 2);
two contacts of the miniature circuit breaker (ZK) are respectively connected with two ends of the bus;
The first contacts (1L 1-2T 1) of the control contactor (KM 1), the second resistor (R 2), the coil (L) of the permanent magnet breaker mechanism, the first resistor (R 1) and the second contacts (4T 2-3L 2) of the control contactor (KM 1) are sequentially connected in series and then connected in parallel at two ends of the miniature breaker (ZK);
The external tripping signal of the switch cabinet is connected with a diode (D), the other end of the diode (D) is connected with a detection control unit (KT), a first control contact (KT-1) of the detection control unit (KT) is connected with a first contact (1L 1-2T 1) of a control contactor (KM 1), the other end of the detection control unit (KT) is connected with a standby auxiliary contact (QF) of a permanent magnet circuit breaker, and the standby auxiliary contact (QF) of the permanent magnet circuit breaker is connected with a second contact (4T 2-3L 2) of the control contactor (KM 1);
One end of a coil (A1-A2) of the control contactor (KM 1) is connected with a standby auxiliary contact (QF) of the permanent magnet circuit breaker, the standby auxiliary contact (QF) of the permanent magnet circuit breaker is connected with a second contact (4T 2-3L 2) of the control contactor (KM 1), the other end of the coil (A1-A2) of the control contactor (KM 1) is connected with a second control contact (KT-2) of the detection control unit (KT), and the second control contact (KT-2) of the detection control unit (KT) is connected with a first contact (1L 1-2T 1) of the control contactor (KM 1);
The self-resetting button (RD 2), the first contact (1-2) of the alarm relay (KJ 1) and the coil (5-6) of the alarm relay (KJ 1) are connected in series, the third contact (13 NO-14 NO) of the control contactor (KM 1) is connected in parallel with the two ends of the first contact (1-2) of the alarm relay (KJ 1), the alarm indicator lamp (RD 1) in the self-resetting button indicator lamp is connected in parallel with the two ends of the coil (5-6) of the alarm relay (KJ 1), the self-resetting button (RD 2) is connected with the first contact (1L 1-2T 1) of the control contactor (KM 1), and the coil (5-6) of the alarm relay (KJ 1) is connected with the second contact (4T 2-3L 2) of the control contactor (KM 1);
Two ends of a second contact (3-4) of the alarm relay (KJ 1) are respectively connected with a terminal block of the switch cabinet;
two ends of a fourth contact (5T 3-6L 3) of the control contactor (KM 1) are respectively connected with a switch cabinet external control loop;
when the tripping action of the permanent magnetic circuit breaker is abnormal, the permanent magnetic circuit breaker does not complete the tripping action within the specified tripping action time, the detection control unit (KT) controls the second control contact (KT-2) to be closed, the coil (A1-A2) of the drive control contactor (KM 1) is conducted, the first contact (1L 1-2T 1) of the control contactor (KM 1) is closed, the second contact 4T2-3L2 is closed, the third contact (13 NO-14 NO) is closed, the fourth contact (5T 3-6L 3) is opened, and meanwhile, the functions of the permanent magnetic circuit breaker such as opening control, the re-action alarm indication, the re-action alarm output and the closing loop locking are completed.
2. The emergency opening delay restarting device of a permanent magnet circuit breaker according to claim 1, characterized in that the first resistor (R 1) adopts RX20-25W-5 Ω.
3. The emergency opening delay restarting device of a permanent magnet circuit breaker according to claim 1, characterized in that the second resistor (R 2) adopts RX20-25W-5 Ω.
4. The emergency brake release delay reactivating device of se:Sub>A permanent magnet circuit breaker according to claim 1, characterized in that the detection control unit (KT) adopts HHS 5C-se:Sub>A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535314.4A CN110148545B (en) | 2019-06-20 | 2019-06-20 | Emergency brake-separating time-delay restarting device of permanent magnet circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535314.4A CN110148545B (en) | 2019-06-20 | 2019-06-20 | Emergency brake-separating time-delay restarting device of permanent magnet circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110148545A CN110148545A (en) | 2019-08-20 |
| CN110148545B true CN110148545B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910535314.4A Active CN110148545B (en) | 2019-06-20 | 2019-06-20 | Emergency brake-separating time-delay restarting device of permanent magnet circuit breaker |
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| CN (1) | CN110148545B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426695A (en) * | 2013-08-02 | 2013-12-04 | 北京工业大学 | Method and device for preventing circuit breaker coil from burning |
| CN105047491A (en) * | 2015-08-26 | 2015-11-11 | 吉林瀚丰电气有限公司 | Anti-pumping device of permanent-magnet operation mechanism |
| CN109884521A (en) * | 2019-03-28 | 2019-06-14 | 山东钢铁股份有限公司 | A kind of circuit-breaker switching on-off control loop template monitoring, alarming circuit |
| CN209981144U (en) * | 2019-06-20 | 2020-01-21 | 吉林永大电气开关有限公司 | Emergency brake-separating delay re-actuating device of permanent magnet circuit breaker |
-
2019
- 2019-06-20 CN CN201910535314.4A patent/CN110148545B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426695A (en) * | 2013-08-02 | 2013-12-04 | 北京工业大学 | Method and device for preventing circuit breaker coil from burning |
| CN105047491A (en) * | 2015-08-26 | 2015-11-11 | 吉林瀚丰电气有限公司 | Anti-pumping device of permanent-magnet operation mechanism |
| CN109884521A (en) * | 2019-03-28 | 2019-06-14 | 山东钢铁股份有限公司 | A kind of circuit-breaker switching on-off control loop template monitoring, alarming circuit |
| CN209981144U (en) * | 2019-06-20 | 2020-01-21 | 吉林永大电气开关有限公司 | Emergency brake-separating delay re-actuating device of permanent magnet circuit breaker |
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| Publication number | Publication date |
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| CN110148545A (en) | 2019-08-20 |
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