CN103606882A - Novel 750kilovolt breaker energy storage motor control loop - Google Patents
Novel 750kilovolt breaker energy storage motor control loop Download PDFInfo
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- CN103606882A CN103606882A CN201310647924.6A CN201310647924A CN103606882A CN 103606882 A CN103606882 A CN 103606882A CN 201310647924 A CN201310647924 A CN 201310647924A CN 103606882 A CN103606882 A CN 103606882A
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Abstract
The invention relates to a novel 750kilovolt breaker energy storage motor control loop which is characterized in that the control loop comprises a control loop body, an automatic reset loop and a motor loop connected with an alternating current power source, the control loop body and the automatic reset loop are connected with a direct current power source, the motor loop comprises an alternating current power source air switch (8M) and a normally-open contact of a control motor alternating current contactor (88M), the alternating current power source air switch (8M) and the normally-open contact are connected in series, the alternating current power source air switch (8M) is connected with the alternating current power source, the control loop further comprises an energy storage motor (M), and the energy storage motor (M) is connected with the normally-open contact of the control motor alternating current contactor (88M) through a coil of a control motor thermal relay (49M). According to the improved 750kilovolt breaker energy storage motor control loop, the single-phase energy storage motor control loop is adopted to control the single-phase energy storage motor, so that when the single-phase energy storage motor goes wrong, only the motor loop of the phase is turned off, the other two phases can not be affected, and reliability of an overall breaker is improved.
Description
Technical field
The present invention relates to a kind of novel 750 kilovolts of breaker energy storage motor control loops.
Background technology
750 kilovolts of circuit breakers are most important control and protection equipment in the Northwest's 750 kv grids; the stored energy mechanism of 750 kilovolts of circuit breakers generally adopts hydraulic pressure spring operating mechanism; for the normal operation of circuit breaker provides essential power; therefore stored energy mechanism is reliably whether most important; actual operating experience shows, the fault great majority of circuit breaker are all relevant with operating mechanism.
The LW13-800 type circuit breaker of take is example, this type circuit breaker is in actual motion, once because appearring in of circuit breaker mutually, motor rotation overlong time or electric motor loop there is the situation that overload is overheated, cause the whole energy storage motor control loop of circuit breaker to be blocked, cause the situation of breaker operation mechanism pressure decreased lock-reclosing lock, brought threat to the safe and stable operation of transformer station and 750kV electrical network, for the current processing method of this situation, can only be manually to disconnect DC control supply air switch, thus involution breaker energy storage motor control loop.
Summary of the invention
The object of this invention is to provide a kind of novel 750 kilovolts of breaker energy storage motor control loops, can improve automatization level and the operational reliability of circuit breaker.
A kind of novel 750 kilovolts of breaker energy storage motor control loops, its special feature is: comprise the control loop and the automatic resetting loop that are connected with DC power supply, also comprise the electric motor loop being connected with AC power, wherein electric motor loop comprises the AC power air switch being in series and the normally open contact of controlling motor A.C. contactor, this AC power air switch is connected with AC power, also comprise energy storage motor, this energy storage motor is connected with the normally open contact of this control motor A.C. contactor by controlling the coil of motor heat relay;
Wherein automatic resetting loop comprises the second DC power supply air switch, one end of this second DC power supply air switch is connected with DC power supply and its other end is in series with respectively the second normally closed interlock and the resistance of the first auxiliary relay, is also parallel with the coil of electric capacity and the second auxiliary relay at these resistance two ends;
Wherein control loop comprises the first DC power supply air switch, one end of this first DC power supply air switch is connected with DC power supply and its other end is connected with major loop, this major loop comprises the limit switch being cascaded respectively, the coil of the time relay, the first normally closed interlock of the coil of A.C. contactor and the first auxiliary relay, and these major loop two ends are also parallel with subloop, this subloop comprises the normally open contact of the first auxiliary relay being cascaded respectively, the coil of the normally closed interlock of the second auxiliary relay and the first auxiliary relay, and be also parallel with respectively at the normally open contact two ends of this first auxiliary relay, control the normally open contact of motor heat relay and the normally open contact of the time relay.
Wherein the voltage of DC control supply is 110V, and AC power is civil power.
The invention provides 750 kilovolts of breaker energy storage motor control loops of a kind of modified model, adopt single-phase energy storage motor control loop to control the mode of single-phase energy storage motor, the electric motor loop of this phase of locking when single-phase energy storage motor is gone wrong and do not affect other two-phases, thus the reliability of whole circuit breaker improved.In energy storage motor control loop, introduce in addition the function of automatic reclosing; make control loop can automatic resetting when breaking down once; if belong to the fault of instantaneity, by an involution, can recover normal; if belong to permanent fault; after involution once, can not fix a breakdown; by locking energy storage motor control loop, to protect energy storage motor.
Accompanying drawing explanation
Accompanying drawing 1 is the electrical schematic diagram of control loop in the present invention;
Accompanying drawing 3 is the electrical schematic diagram of electric motor loop in the present invention.
Embodiment
As Fig. 1, 2, shown in 3, the present invention is a kind of novel 750 kilovolts of breaker energy storage motor control loops, comprise the control loop and the automatic resetting loop that are connected with DC power supply, also comprise the electric motor loop being connected with AC power, wherein electric motor loop comprises the AC power air switch 8M being in series and the normally open contact of controlling motor A.C. contactor 88M, this AC power air switch 8M is connected with AC power, also comprise energy storage motor M, this energy storage motor M is connected with the normally open contact of this control motor A.C. contactor 88M by controlling the coil of motor heat relay 49M.
Wherein automatic resetting loop comprises the second DC power supply air switch 8D1, one end of this second DC power supply air switch 8D1 is connected with DC power supply, and its other end is in series with respectively the second normally closed interlock 49MX-2 and resistance R of the first auxiliary relay 49MX, at these resistance R two ends, be also parallel with the coil of capacitor C and the second auxiliary relay ZCH.
Wherein control loop comprises the first DC power supply air switch 8D, one end of this first DC power supply air switch 8D is connected with DC power supply and its other end is connected with major loop, this major loop comprises normally closed interlock (the limit switch 33hb reflection spring energy-storage situation of the limit switch 33hb being cascaded respectively, controlled cam is controlled, when energy storage is reduced to setting value, limit switch 33hb is closed, energy storage motor M starting, start energy storage, energy storage reaches after setting value, limit switch 33hb opens, energy storage motor M stall), the coil of time relay 48T, the coil of A.C. contactor 88M (as shown in Figure 1, time relay 48T is the integrative installation technology of connecting with A.C. contactor 88M, while having electric current to flow through the coil of the two, the time relay 48T timing of starting working, while A.C. contactor 88M excitation, its normally opened contact is closed, if now air switch 8M is closed, energy storage motor M starts energy storage) and the first normally closed interlock 49MX-1 of the first auxiliary relay 49MX, and these major loop two ends are also parallel with subloop, this subloop comprises the normally open contact 49MX-3 of the first auxiliary relay 49MX being cascaded respectively, the coil of the normally closed interlock of the second auxiliary relay ZCH and the first auxiliary relay 49MX, and be also parallel with respectively at the normally open contact 49MX-3 two ends of this first auxiliary relay 49MX, control the normally open contact of motor heat relay 49M and the normally open contact of time relay 48T.
Wherein the voltage of DC power supply is 110V, and AC power is civil power.
During actual use, need the independently control loop of 3 this patents, thereby control respectively A, B, the C three-phase circuit of motor.
Using method of the present invention and operation principle are:
1, adopt single-phase energy storage motor control loop to control the mode of single-phase energy storage motor, by increasing the number of auxiliary relay and contact thereof, the electric motor loop of this phase of locking while making single-phase going wrong and do not affect other two-phases.The A phase energy storage motor control loop of take is example, and the energy storage motor control loop after improvement does not affect the normal operation of B, C two-phase completely when A phase energy storage motor control loop locking energy storage motor M, can greatly improve the reliability of circuit breaker.
2, the second normally-closed contact of the first auxiliary relay 49MX is closed in automatic resetting loop under normal circumstances, capacitor C is in being full of electricity condition, if while there is the first auxiliary relay 49MX excitation locking energy storage motor control loop, in automatic resetting loop, the second normally-closed contact of the first auxiliary relay 49MX is opened.Capacitor C is discharged the coil by the second auxiliary relay ZCH, resistance R, thereby start the second auxiliary relay ZCH, normally-closed contact moment of the second auxiliary relay ZCH is opened once, make the coil loss of excitation of the first auxiliary relay 49MX in control loop, thereby reach the object of involution control loop.
By adjusting the size of capacitor C and resistance R, make the setting time that time that capacitor C has been charged is greater than time relay 48T (control time that motor heat relay 49M starts varying in size and change with overload current, but general setting time that can overtime relay 48T), thus only guaranteed control loop involution function once.
Principle is as follows: when to the involution of energy storage motor control loop, once rear fault is not got rid of yet, the time of having charged due to capacitor C is greater than the setting time of time relay 48T, when the first auxiliary relay 49MX is again during lock-in control loop, capacitor C is not full of electricity.In this case, capacitor C is still discharged by coil, the resistance R of the second auxiliary relay ZCH, but because capacitor C is not full of electricity, its discharging current size is not enough to start the coil of the second auxiliary relay ZCH.And after this in automatic resetting loop the second normally-closed contact of the first auxiliary relay 49MX will can not charge to capacitor C in open mode, guaranteed after this not involution energy storage motor control loop again.
Claims (2)
1. novel 750 kilovolts of breaker energy storage motor control loops, it is characterized in that: comprise the control loop and the automatic resetting loop that are connected with DC power supply, also comprise the electric motor loop being connected with AC power, wherein electric motor loop comprises the AC power air switch (8M) being in series and the normally open contact of controlling motor A.C. contactor (88M), this AC power air switch (8M) is connected with AC power, also comprise energy storage motor (M), this energy storage motor (M) is connected with the normally open contact of this control motor A.C. contactor (88M) by controlling the coil of motor heat relay (49M),
Wherein automatic resetting loop comprises the second DC power supply air switch (8D1), one end of this second DC power supply air switch (8D1) is connected with DC power supply and its other end is in series with respectively the second normally closed interlock (49MX-2) and the resistance (R) of the first auxiliary relay (49MX), is also parallel with the coil of electric capacity (C) and the second auxiliary relay (ZCH) at this resistance (R) two ends;
Wherein control loop comprises the first DC power supply air switch (8D), one end of this first DC power supply air switch (8D) is connected with DC power supply and its other end is connected with major loop, this major loop comprises the limit switch (33hb) being cascaded respectively, the coil of the time relay (48T), first normally closed interlock (49MX-1) of the coil of A.C. contactor (88M) and the first auxiliary relay (49MX), and these major loop two ends are also parallel with subloop, this subloop comprises the normally open contact (49MX-3) of the first auxiliary relay (49MX) being cascaded respectively, the coil of the normally closed interlock of the second auxiliary relay (ZCH) and the first auxiliary relay (49MX), and be also parallel with respectively at normally open contact (49MX-3) two ends of this first auxiliary relay (49MX), control the normally open contact of motor heat relay (49M) and the normally open contact of the time relay (48T).
2. a kind of novel 750 kilovolts of breaker energy storage motor control loops as claimed in claim 1, is characterized in that: wherein the voltage of DC control supply is 110V, and AC power is civil power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647924.6A CN103606882A (en) | 2013-12-04 | 2013-12-04 | Novel 750kilovolt breaker energy storage motor control loop |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647924.6A CN103606882A (en) | 2013-12-04 | 2013-12-04 | Novel 750kilovolt breaker energy storage motor control loop |
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| CN103606882A true CN103606882A (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310647924.6A Pending CN103606882A (en) | 2013-12-04 | 2013-12-04 | Novel 750kilovolt breaker energy storage motor control loop |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855680A (en) * | 2014-03-28 | 2014-06-11 | 广州松下空调器有限公司 | Alternating-current overvoltage protection device |
| CN106486301A (en) * | 2016-10-31 | 2017-03-08 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of energy storage control loop of follow-on hydraulic spring grease cup chopper |
| CN115522818A (en) * | 2022-11-09 | 2022-12-27 | 中山亿联智能科技有限公司 | Method for prolonging service life of motor of electronic lock and avoiding locking |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000287471A (en) * | 1999-01-27 | 2000-10-13 | Ichikoh Ind Ltd | Motor drive control circuit |
| CN203674685U (en) * | 2013-12-04 | 2014-06-25 | 国家电网公司 | Novel 750kilovolt breaker energy storage motor control loop |
-
2013
- 2013-12-04 CN CN201310647924.6A patent/CN103606882A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000287471A (en) * | 1999-01-27 | 2000-10-13 | Ichikoh Ind Ltd | Motor drive control circuit |
| CN203674685U (en) * | 2013-12-04 | 2014-06-25 | 国家电网公司 | Novel 750kilovolt breaker energy storage motor control loop |
Non-Patent Citations (1)
| Title |
|---|
| 郭飞等: "LW13-800型罐式断路器储能电机控制回路的改进探讨", 《高压电器》, vol. 46, no. 3, 31 March 2010 (2010-03-31), pages 72 - 74 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855680A (en) * | 2014-03-28 | 2014-06-11 | 广州松下空调器有限公司 | Alternating-current overvoltage protection device |
| CN106486301A (en) * | 2016-10-31 | 2017-03-08 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of energy storage control loop of follow-on hydraulic spring grease cup chopper |
| CN115522818A (en) * | 2022-11-09 | 2022-12-27 | 中山亿联智能科技有限公司 | Method for prolonging service life of motor of electronic lock and avoiding locking |
| CN115522818B (en) * | 2022-11-09 | 2024-04-09 | 中山亿联智能科技有限公司 | Method for prolonging service life of electronic lock motor and avoiding blocking |
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Application publication date: 20140226 |