CN105720557A - Circuit breaker energy storage motor failure protection device and method for preventing energy storage motor failure - Google Patents
Circuit breaker energy storage motor failure protection device and method for preventing energy storage motor failure Download PDFInfo
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- CN105720557A CN105720557A CN201610236959.4A CN201610236959A CN105720557A CN 105720557 A CN105720557 A CN 105720557A CN 201610236959 A CN201610236959 A CN 201610236959A CN 105720557 A CN105720557 A CN 105720557A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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Abstract
The invention discloses a circuit breaker energy storage motor failure protection device and a method for preventing an energy storage motor from a failure, and belongs to the field of control. An energy storage protection module is arranged in the electrical loop of the circuit breaker energy storage motor; time sampling is carried out to the current flowing through the electrical loop of the energy storage motor; the time that the current flows through the electrical loop of the energy storage motor is compared with the energy storage finishing time stated by a circuit breaker; and when the time that the current flows through the electrical loop of the energy storage motor is longer than the energy storage finishing time stated by the circuit breaker, it is judged that the energy storage loop appears a transmission or control failure; the energy storage power is powered off timely, thus protecting the circuit breaker energy storage motor. Through adoption of the device and the method provided by the invention, the problem of damaging the energy storage motor after the circuit breaker energy storage operating mechanism appears the control or transmission failure is technologically solved; the maintaining manpower cost of the worker and the device part replacing cost are saved; the operation reliability of the circuit breaker is further ensured; and the device and the method can be widely applied in fields such as design, production and maintaining of the vacuum circuit breaker.
Description
Technical field
The invention belongs to protection device field, particularly relate to a kind of latch-up protection device for vacuum circuit breaker energy-storage units.
Background technology
The function of vacuum circuit breaker energy-storage units (also known as tank circuit) is the energy needed for providing for breaker closing.
After breaker actuation closes a floodgate, energy-stored spring is stretched by energy-storage units by energy storage motor, carries out automatic energy accumulating for chopper, prepares against in carrying out closing operation or chopper is used when carrying out automatic reclosing next time.
This working method of energy-storage units is similar to the water tank of water closet, and when we are finished the water in water tank, water tank can carry out water-retention automatically, for making the preparation being used as in advance next time.
The general principle figure of vacuum circuit breaker energy-storage units is as it is shown in figure 1, whole energy-storage units is switched 2DK, energy storage auxiliary switch S by accumulation power supply2Form with energy storage motor M.The accumulation power supply that closes switch 2DK, when the non-energy storage of chopper, energy storage auxiliary switch S2Normally closed contact S2-1 is normally closed, and energy-storage units is connected, and energy storage motor M starts to rotate, and draws high energy-stored spring and carries out accumulation of energy；After spring energy-storage is full or completes, by drive mechanism to energy storage auxiliary switch S2Send open command, energy storage auxiliary switch S2Normally closed contact S2-1 switches to disconnection, energy-storage units power-off, and energy storage motor M dead electricity stall, whole thermal energy storage process completes.
But, as the energy storage auxiliary switch S of chopper2Normally closed contact S2-1 breaks down cannot be carried out switching, or when kinematic link deforms and correctly cannot transmit action command, energy-storage units arises that control or drive failures, and directly resulting in energy storage motor M continuously runs for a long time, until burning.
This is chopper defect/fault that distribution substation equipment maintenance and repair personnel are frequently encountered.The reason of motor damage is the normally closed contact S due to energy storage auxiliary switch2Damage after more than-1 arcings, it is impossible to changing, contact is normally closed all the time, although breaker energy storage completes, but energy-storage units is energized for a long time, and energy storage motor M is forced to continuously run, until burning.
Energy storage auxiliary switch S2The fault of-1 simply causes the inducement that motor is damaged, and the immediate cause causing the damage of motor is the thermal breakdown after motor continuously runs.
The energy storage motor that vacuum circuit breaker adopts is mostly short time duty or intermittent duty motor.According to defined short time duty motor and interruption period motor in " GB755-2008 electric rotating machine quota and performance standard specify "; its cycle of operation is required for one shut down and the disconnected time that can (namely have a power failure); there is the cooling of time enough meeting motor; to recover the thermally-stabilised of motor self, as shown in Fig. 2, Fig. 3.
Visible, the energy storage motor adopted in chopper is all unsatisfactory for the condition continuously run.And as the energy-storage units of the dynamic Control of chopper and connecting gear; the protection the decommissioned protection device that self is taked after lacking fault by it; once when controlling or after drive failures occurs in energy-storage units; the order of this endless loop cannot be broken; energy storage motor continuously runs for a long time, finally thermally-stabilised puncturing and damage.
The power transformation of applicant's unit is repaiied in 10 kilovolts of distributions that examination one group administration is safeguarded, the model of vacuum circuit breaker has VB5, ZN-28E etc..
By the trial record of repairing in 4 years is added up, summarize the number of stoppages and the spring operating mechanism number of stoppages of most commonly seen 5 kind model chopper, as shown in table 1.
Table 1, chopper and the operating mechanism number of stoppages, fault rate statistics:
Can clearly find from table 1, account for more than the 80% of circuit breaker failure and defect because of what spring operating mechanism reason caused vacuum circuit breaker fault and defect.
In order to avoid energy storage motor is damaged; increase breaker safe reliability of operation; for concrete breaker energy storage unit; the method finding a kind of general accumulation power supply latch-up protection/prevent breaker energy storage motor malfunctioning, is problem very in the urgent need to address in actual motion and maintenance work.
Summary of the invention
The technical problem to be solved is to provide a kind of breaker energy storage motor based Cb Failure Protection and the method preventing energy storage motor malfunctioning; after breaker energy storage unit breaks down; forced blocking/cut-out accumulation power supply, thus reaching the goal of the invention of protection energy storage motor.
A kind of breaker energy storage motor based Cb Failure Protection of offer is provided; described breaker energy storage motor is arranged in breaker energy storage unit; after the normally closed contact S2-1 of energy storage motor coil M and energy storage auxiliary switch S2 is sequentially connected in series, controls switch 2DK through accumulation power supply and be connected respectively with the two ends controlling power supply；It is characterized in that:
In the electric loop of described breaker energy storage motor, an energy storage protection module is set；
Described energy storage protection module at least includes a voltage relay U, a voltage relay SU with a time delay and current time relay I；
The two ends of the described voltage relay SU control coil with time delay, through the normal opened contact I-1 of overcurrent time relay I, connection corresponding to the two ends controlling power supply respectively；
The two ends of described voltage relay U control coil, through the Time Delay Opening contact SU-1 of the voltage relay SU with time delay, connection corresponding to the two ends controlling power supply respectively；
The normal opened contact U-2 of described voltage relay U, is attempted by the SU-1 of Time Delay Opening contact, constitutes " self-sustaining " functional circuit of voltage relay U；
The normally closed contact U-1 of described voltage relay U, the control coil of current time relay I, energy storage auxiliary switch S2 normally closed contact S2-1 and energy storage motor coil M be sequentially connected in series after with control power supply two ends be connected respectively；
When breaker energy storage cell operation is normal, the accumulation power supply that closes controls switch 2DK, energy storage motor M and obtains electric and start to rotate, driving energy-stored spring to carry out energy storage, current time relay I coil obtains electric simultaneously, and normal opened contact I-1 closes, the coil of the voltage relay SU with time delay obtains electric, starts timing；When, after the energy storage deadline that timing time reaches chopper defined, breaker energy storage completes, energy storage auxiliary switch S2Normally closed contact S2Disconnect, cut off energy storage motor power supply；Current time relay I coil losing electricity simultaneously, normally closed contact I-1 disconnects, the coil losing electricity of the voltage relay SU with time delay, stops counting, and contact SU-1 is failure to actuate, and voltage relay U does not start, and energy storage protection module does not start the function of locking accumulation power supply；
When breaker energy storage unit breaks down, the accumulation power supply that closes controls switch 2DK, energy storage motor M must establish beginning rotation by cable, energy-stored spring is driven to carry out energy storage, current time relay I coil obtains electric simultaneously, and normal opened contact I-1 closes, and the coil of the voltage relay SU with time delay must establish beginning timing by cable；When after the sampling setting time flowing through electric current in the electric loop that timing exceedes energy storage motor; energy storage motor still electric be rotated further; then normal opened contact SU-1 Guan Bi; the coil of voltage relay U obtains electric, and normal opened contact U-2 closes, and the coil of voltage relay U realizes voltage " self-sustaining "; normal opened contact U-1 disconnects; cutting off the power supply of energy storage motor, the control power supply of forced blocking energy-storage units, energy storage protection module starts the function of locking accumulation power supply.
Concrete, the energy storage deadline of described chopper defined is 15 seconds, and the sampling flowing through electric current in the described electric loop to energy storage motor set the time as 20 seconds.
Further, at the two ends of described voltage relay U coil, and it is connected to display lamp D, for externally sending alarm signal.
Present invention also offers a kind of method preventing breaker energy storage motor malfunctioning, described breaker energy storage motor is arranged in breaker energy storage unit, also includes spring operating mechanism in described breaker energy storage unit；It is characterized in that:
In the electric loop of described breaker energy storage motor, an energy storage protection module is set；
Described energy storage protection module is made up of sampling unit, delay unit and energy storage motor electric loop on/off control unit；
Described sampling unit is for carrying out time sampling to the electric current in the electric loop flowing through energy storage motor；
Described delay unit is for comparing the energy storage deadline of the time Yu chopper defined of flowing through electric current in energy storage motor electric loop；
Described energy storage motor electric loop is the electric loop of energy storage motor described in on/off；
When described electric loop flows through time of electric current more than the energy storage deadline of chopper defined after, energy storage protection module decides that the spring operating mechanism of breaker energy storage unit breaks down；
The electric loop of breaker energy storage motor is taked protective measure by then described energy storage protection module, cuts off the power supply of energy storage motor, stops the operating of energy storage motor；
The described method preventing breaker energy storage motor malfunctioning, by monitoring the time flowing through electric current in described energy storage motor electric loop, judge whether the spring operating mechanism of breaker energy storage unit breaks down, avoid continuously running for a long time of energy storage motor, prevent and avoid burning and damaging of described energy storage motor, and then the operational reliability of guarantee chopper, improve the safety of urban distribution network, economy, stable operation.
The electric loop of its described energy storage motor at least includes energy storage motor coil M and is serially connected in the energy storage auxiliary switch S controlled between power supply and energy storage motor coil M2Normally closed contact S2-1；
Described energy storage protection module includes a voltage relay U, a voltage relay SU with a time delay and current time relay I；
Described voltage relay U constitutes described energy storage motor electric loop on/off control unit, for being switched on or switched off the electric loop of energy storage motor and realizing " self-sustaining " function；
The described voltage relay SU with time delay constitutes described delay unit, for measuring the motion time of energy storage motor, controls the startup of voltage relay U；
Described current time relay I constitutes described sampling unit, for detecting the time flowing through electric current in the electric loop of energy storage motor, starts the voltage relay SU with time delay.
Concrete, the two ends of the described voltage relay SU control coil with time delay, through the normal opened contact I-1 of overcurrent time relay I, connection corresponding to the two ends controlling power supply respectively；
The two ends of described voltage relay U control coil, through the Time Delay Opening contact SU-1 of the voltage relay SU with time delay, connection corresponding to the two ends controlling power supply respectively；
The normal opened contact U-2 of described voltage relay U, is attempted by the SU-1 of Time Delay Opening contact, constitutes " self-sustaining " functional circuit of voltage relay U；
The normally closed contact U-1 of described voltage relay U, the control coil of current time relay I, energy storage auxiliary switch S2 normally closed contact S2-1 and energy storage motor coil M be sequentially connected in series after with control power supply two ends be connected respectively.
Further, at the two ends of described voltage relay U control coil, and it is connected to a display lamp D.
The energy storage deadline of its described chopper defined is 15 seconds, and the sampling time flowing through electric current in the electric loop of energy storage motor is 20 seconds by described sampling unit.
Compared with the prior art, the invention have the advantage that
1. by arranging energy storage protection module; realize the protection for chopper self operating mechanism element energy storage motor; prevent spring operating mechanism from occurring controlling or injury to energy storage motor after drive failures; when energy-storage units break down cause energy storage motor improper idle running time; can cut off immediately and locking accumulation power supply, protect energy storage motor；
2. energy storage protection module is set, solves breaker spring operating mechanism technically and occur controlling and causing the impaired problem of energy storage motor after drive failures, saved staff and keeped in repair cost of labor and equipment part replacement cost；
3. ensure chopper operational reliability further, improve the safety of urban distribution network, economic stability operation.
Accompanying drawing explanation
Fig. 1 is the general principle schematic diagram of existing vacuum circuit breaker energy-storage units；
Fig. 2 is short time duty motor cycle of operation schematic diagram；
Fig. 3 is intermittent duty motor cycle of operation schematic diagram；
Fig. 4 is the schematic diagram of latch-up protection circuit of the present invention；
Fig. 5 is the step block diagram that the present invention prevents breaker energy storage motor malfunctioning.
In figure, 2DK is accumulation power supply switch, S2For energy storage auxiliary switch, M is energy storage motor, and U is voltage relay, and SU is the voltage relay with time delay, and I is current time relay；
P load；PvElectrical loss；Theta temperature；θmaxThe maximum temperature reached；The t time；△ tPConstant load runs the time；TCDuty cycle；△ tRShut down and end can the time；Cyclic duration factor=△ tP/TC；
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
In Fig. 4, technical scheme, in the electric loop of described breaker energy storage motor, it is provided with an energy storage protection module；Described energy storage protection module at least includes a voltage relay U, a voltage relay SU with a time delay and current time relay I.
As it can be seen, the two ends of the voltage relay SU control coil with time delay, through the normal opened contact I-1 of overcurrent time relay I, connection corresponding to the two ends controlling power supply respectively；The two ends of voltage relay U control coil, through the Time Delay Opening contact SU-1 of the voltage relay SU with time delay, connection corresponding to the two ends controlling power supply respectively；The normal opened contact U-2 of voltage relay U, is attempted by the SU-1 of Time Delay Opening contact, constitutes " self-sustaining " functional circuit of voltage relay U；The normally closed contact U-1 of voltage relay U, the control coil of current time relay I, energy storage auxiliary switch S2 normally closed contact S2-1 and energy storage motor coil M be sequentially connected in series after with control power supply two ends be connected respectively；
When breaker energy storage cell operation is normal, the accumulation power supply that closes controls switch 2DK, energy storage motor M and obtains electric and start to rotate, driving energy-stored spring to carry out energy storage, current time relay I coil obtains electric simultaneously, and normal opened contact I-1 closes, the coil of the voltage relay SU with time delay obtains electric, starts timing.
When, after the energy storage deadline that timing time reaches chopper defined, breaker energy storage completes, the normally closed contact S2 of energy storage auxiliary switch S2 disconnects, and cuts off energy storage motor power supply；Current time relay I coil losing electricity simultaneously, normally closed contact I-1 disconnects, the coil losing electricity of the voltage relay SU with time delay, stops counting, and contact SU-1 is failure to actuate, and voltage relay U does not start, and energy storage protection module does not start the function of locking accumulation power supply；
And when breaker energy storage unit breaks down, the accumulation power supply that closes controls switch 2DK, energy storage motor M must establish beginning rotation by cable, driving energy-stored spring to carry out energy storage, current time relay I coil obtains electric simultaneously, and normal opened contact I-1 closes, the coil of the voltage relay SU with time delay obtains electric, starts timing.
When after the sampling setting time flowing through electric current in the electric loop that timing exceedes energy storage motor; energy storage motor still electric be rotated further; then normal opened contact SU-1 Guan Bi; the coil of voltage relay U obtains electric, and normal opened contact U-2 closes, and the coil of voltage relay U realizes voltage " self-sustaining "; normal opened contact U-1 disconnects; cutting off the power supply of energy storage motor, the control power supply of forced blocking energy-storage units, energy storage protection module starts the function of locking accumulation power supply.
The key of the technical program; it is exactly set up a kind of "off" mechanism to the energy-storage units of chopper; once controlling or after drive failures occurs in energy-storage units; just (locking here is habitual appellation in the industry to the control power supply of locking immediately/cut-out energy-storage units; book of teaching is frequently referred to cut off), protection energy storage motor is not burned out.
Concrete, the energy storage deadline of described chopper defined is 15 seconds, and the sampling flowing through electric current in the described electric loop to energy storage motor set the time as 20 seconds
Further, at the two ends of described voltage relay U coil, and it is connected to display lamp D, for externally sending alarm signal.
In Fig. 5, technical scheme provides a kind of method preventing breaker energy storage motor malfunctioning, is controlled including to the control power on/off of breaker energy storage motor.
Its inventive point is in that, in the electric loop of breaker energy storage motor, arranges an energy storage protection module；Described energy storage protection module is made up of sampling unit, delay unit and energy storage motor electric loop on/off control unit.
The electric current flow through is carried out time sampling by the technical program in the electric loop of energy storage motor; if the spring operating mechanism of chopper is if there is transmission or controls fault; after the current time flow through in electric loop is more than the energy storage deadline of this model chopper defined; it is determined that spring operating mechanism breaks down; take protective measure immediately; cut off accumulation power supply, stop motor work.
Protecting energy storage motor to jump out aforesaid endless loop, key sets up a kind of disconnection mechanism to energy-storage units exactly, once energy-storage units appearance controls or after drive failures, and locking accumulation power supply, protect energy storage motor.
The technical program flows through the time of electric current by monitoring in energy storage motor electric loop, judge whether the spring operating mechanism of breaker energy storage unit breaks down, avoid continuously running for a long time of energy storage motor, prevent and avoid burning and damaging of energy storage motor, and then the operational reliability of guarantee chopper, improve the safety of urban distribution network, economy, stable operation.
When described electric loop flows through time of electric current more than the energy storage deadline of chopper defined after, energy storage protection module decides that the spring operating mechanism of breaker energy storage unit breaks down；The electric loop of breaker energy storage motor is taked protective measure by then described energy storage protection module, cuts off the power supply of energy storage motor, stops the operating of energy storage motor.
Time properly functioning, internal energy storage auxiliary switch can automatically cut off the electric loop after energy storage, and accumulation power supply latch-up protection device does not start；Once accumulation power supply latch-up protection device samples the time flowing through electric current in electric loop exceedes the time of setting, then judge that energy-storage units breaks down, and protects device action immediately, cut off motor power forced blocking energy-storage units power supply.
After energy storage protection module action, device display lamp D lights, and instruction accumulation power supply is blocked, sends alarm signal on the spot, or, distally centralized control center sends the alarm signal of " the non-energy storage signal of chopper ".
The second protection of current vacuum circuit breaker often only focuses on design and the protection of chopper major loop, and ignores the protection of self element of operating mechanism.The technical program is mainly in the protection of self operating mechanism element energy storage motor; prevent spring operating mechanism from occurring controlling or injury to energy storage motor after drive failures; when energy-storage units break down cause energy storage motor improper idle running time; can cut off immediately and locking accumulation power supply, protect energy storage motor.
The energy storage deadline (i.e. operating time of protection) of the time (i.e. motor energy storage time) and chopper defined of flowing through electric current in correct coupling electric loop becomes the technical program and realizes the key of target and Reliability of Microprocessor.
The energy storage time of existing 10 kilovolts of vacuum circuit breakers is usually no more than 15 seconds.Therefore, accumulation power supply latch-up protection movement time of coupling, slightly larger than 15 seconds, for the reliability of safety action, increases regular hour nargin, the chopper according to different model, the movement time of protection device is arranged between 20～30 seconds and is advisable.
In 10 kilovolts of distributions, 10 kilovolts of vacuum circuit breaker numerous types, energy storage motor model and fault affect, defect processing difficulty is also all different, for VB5 type chopper, in 1 class of power supply unit administered of certain power supply branch's substation equipment maintenance and repair, have 13 transformer stations and adopt VB5 type chopper, carried out the repair and maintenance of 234 VB5 type choppers from 2011 so far altogether, operation repairing has carried out 36 times altogether, altogether changes the energy storage motor 36 burnt；Maintenance repair process carries out altogether 75 energy storage meshing fault process, although these 75 faults have energy storage motor to damage, if but be in operation once after carrying out remote operation or reclosing operation, the improper longtime running of energy storage motor, the damage of motor will be caused.
1, every price of HDZ-21001/A type energy storage motor 465 yuan, can save element expense 465 (unit) * 36 (only)=16740 yuan altogether.
2, to change the calculating in 4 hours of HDZ-21001/A type energy storage motor, 10 kilovolts can be increased income altogether and be available for electricity charge use, 0.86 (unit/kilowatt hour) * 10 (kilovolt) * 1250 (ampere) * 0.8 (power factor) * 4 (hour /) * 36 (only)=1238400 yuan.
3, change the human cost saved reducing energy storage motor, cost of labor 50 (unit/people/hour) * 3 (people) * 4 (hour) * 36 (platform)=21600 yuan can be saved altogether.
VB5 type chopper only for these 36 energy storage motor damages carries out cost accounting, so that it may save fund: 16740+1238400+21600=1276740 unit
In the 10 KV distribution nets that current applicant is administrative, the combining form that switchgear mainly adds vehicle type chopper with switch cubicle exists, and the accumulation power supply of the commonly used AC 220 V of switch cubicle.Therefore, the technical program has possessed good versatility in 10 kilovolts of distribution vacuum circuit breakers.
In the chopper of higher voltage grade, as long as its spring operating mechanism adopts the power supply of AC 220 V, after the movement time of accumulation power supply latch-up protection device only need to be carried out corresponding coupling with energy storage time, equally possible popularization and application.
The technical program; the time that in loop, electric current flows through is controlled by monitoring energy storage motor; compare with the energy storage deadline of this model chopper; when energy-storage units time-out is not fully complete energy storage action; namely judge energy-storage units occurs in that transmission or controls fault; cut off accumulation power supply immediately, to realize circuit-breaker-motor protection.
The enforcement of the technical program, solves breaker spring operating mechanism technically and occurs controlling and causing the impaired problem of energy storage motor after drive failures, saved staff and keeped in repair cost of labor and equipment part replacement cost, economic benefits；Ensure the operational reliability of chopper further, improve the safety of urban distribution network, economy, stable operation,
The technical program is the technological achievement that applicant's unit basic unit's service worker participation " group's wound " is movable.The promotion and application of this technical scheme, for the safe power supply of the field maintenance of chopper and whole electrical network, significant.
The method can be widely used in the design of vacuum type chopper, manufacture and maintenance field.
Claims (8)
1. a breaker energy storage motor based Cb Failure Protection; described breaker energy storage motor is arranged in breaker energy storage unit; after the normally closed contact S2-1 of energy storage motor coil M and energy storage auxiliary switch S2 is sequentially connected in series, controls switch 2DK through accumulation power supply and be connected respectively with the two ends controlling power supply；It is characterized in that:
In the electric loop of described breaker energy storage motor, an energy storage protection module is set；
Described energy storage protection module at least includes a voltage relay U, a voltage relay SU with a time delay and current time relay I；
The two ends of the described voltage relay SU control coil with time delay, through the normal opened contact I-1 of overcurrent time relay I, connection corresponding to the two ends controlling power supply respectively；
The two ends of described voltage relay U control coil, through the Time Delay Opening contact SU-1 of the voltage relay SU with time delay, connection corresponding to the two ends controlling power supply respectively；
The normal opened contact U-2 of described voltage relay U, is attempted by the SU-1 of Time Delay Opening contact, constitutes " self-sustaining " functional circuit of voltage relay U；
The normally closed contact U-1 of described voltage relay U, the control coil of current time relay I, energy storage auxiliary switch S2 normally closed contact S2-1 and energy storage motor coil M be sequentially connected in series after with control power supply two ends be connected respectively；
When breaker energy storage cell operation is normal, the accumulation power supply that closes controls switch 2DK, energy storage motor M and obtains electric and start to rotate, driving energy-stored spring to carry out energy storage, current time relay I coil obtains electric simultaneously, and normal opened contact I-1 closes, the coil of the voltage relay SU with time delay obtains electric, starts timing；When, after the energy storage deadline that timing time reaches chopper defined, breaker energy storage completes, energy storage auxiliary switch S2Normally closed contact S2Disconnect, cut off energy storage motor power supply；Current time relay I coil losing electricity simultaneously, normally closed contact I-1 disconnects, the coil losing electricity of the voltage relay SU with time delay, stops counting, and contact SU-1 is failure to actuate, and voltage relay U does not start, and energy storage protection module does not start the function of locking accumulation power supply；
When breaker energy storage unit breaks down, the accumulation power supply that closes controls switch 2DK, energy storage motor M must establish beginning rotation by cable, energy-stored spring is driven to carry out energy storage, current time relay I coil obtains electric simultaneously, and normal opened contact I-1 closes, and the coil of the voltage relay SU with time delay must establish beginning timing by cable；When after the sampling setting time flowing through electric current in the electric loop that timing exceedes energy storage motor; energy storage motor still electric be rotated further; then normal opened contact SU-1 Guan Bi; the coil of voltage relay U obtains electric, and normal opened contact U-2 closes, and the coil of voltage relay U realizes voltage " self-sustaining "; normal opened contact U-1 disconnects; cutting off the power supply of energy storage motor, the control power supply of forced blocking energy-storage units, energy storage protection module starts the function of locking accumulation power supply.
2. the breaker energy storage motor based Cb Failure Protection described in claim 1, is characterized in that the energy storage deadline of described chopper defined is 15 seconds, and the sampling flowing through electric current in the described electric loop to energy storage motor set the time as 20 seconds.
3. the breaker energy storage motor based Cb Failure Protection described in claim 1, is characterized in that the two ends at described voltage relay U coil, and is connected to display lamp D, for externally sending alarm signal.
4. preventing the method that breaker energy storage motor is malfunctioning, described breaker energy storage motor is arranged in breaker energy storage unit, also includes spring operating mechanism in described breaker energy storage unit；It is characterized in that:
In the electric loop of described breaker energy storage motor, an energy storage protection module is set；
Described energy storage protection module is made up of sampling unit, delay unit and energy storage motor electric loop on/off control unit；
Described sampling unit is for carrying out time sampling to the electric current in the electric loop flowing through energy storage motor；
Described delay unit is for comparing the energy storage deadline of the time Yu chopper defined of flowing through electric current in energy storage motor electric loop；
Described energy storage motor electric loop is the electric loop of energy storage motor described in on/off；
When described electric loop flows through time of electric current more than the energy storage deadline of chopper defined after, energy storage protection module decides that the spring operating mechanism of breaker energy storage unit breaks down；
The electric loop of breaker energy storage motor is taked protective measure by then described energy storage protection module, cuts off the power supply of energy storage motor, stops the operating of energy storage motor；
The described method preventing breaker energy storage motor malfunctioning, by monitoring the time flowing through electric current in described energy storage motor electric loop, judge whether the spring operating mechanism of breaker energy storage unit breaks down, avoid continuously running for a long time of energy storage motor, prevent and avoid burning and damaging of described energy storage motor, and then the operational reliability of guarantee chopper, improve the safety of urban distribution network, economy, stable operation.
5. described in claim 4, prevent the malfunctioning method of breaker energy storage motor, it is characterized in that the electric loop of described energy storage motor at least includes energy storage motor coil M and is serially connected in the energy storage auxiliary switch S controlled between power supply and energy storage motor coil M2Normally closed contact S2-1；
Described energy storage protection module includes a voltage relay U, a voltage relay SU with a time delay and current time relay I；
Described voltage relay U constitutes described energy storage motor electric loop on/off control unit, for being switched on or switched off the electric loop of energy storage motor and realizing " self-sustaining " function；
The described voltage relay SU with time delay constitutes described delay unit, for measuring the motion time of energy storage motor, controls the startup of voltage relay U；
Described current time relay I constitutes described sampling unit, for detecting the time flowing through electric current in the electric loop of energy storage motor, starts the voltage relay SU with time delay.
6. described in claim 4, prevent the malfunctioning method of breaker energy storage motor, it is characterized in that the two ends of the described voltage relay SU control coil with time delay, through the normal opened contact I-1 of overcurrent time relay I, corresponding with the two ends controlling power supply respectively connect；
The two ends of described voltage relay U control coil, through the Time Delay Opening contact SU-1 of the voltage relay SU with time delay, connection corresponding to the two ends controlling power supply respectively；
The normal opened contact U-2 of described voltage relay U, is attempted by the SU-1 of Time Delay Opening contact, constitutes " self-sustaining " functional circuit of voltage relay U；
The normally closed contact U-1 of described voltage relay U, the control coil of current time relay I, energy storage auxiliary switch S2 normally closed contact S2-1 and energy storage motor coil M be sequentially connected in series after with control power supply two ends be connected respectively.
7. described in claim 6, prevent the malfunctioning method of breaker energy storage motor, it is characterized in that the two ends at described voltage relay U control coil, and be connected to a display lamp D.
8. preventing the malfunctioning method of breaker energy storage motor described in claim 4, it is characterized in that the energy storage deadline of described chopper defined is 15 seconds, the sampling time flowing through electric current in the electric loop of energy storage motor is 20 seconds by described sampling unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610236959.4A CN105720557A (en) | 2016-04-15 | 2016-04-15 | Circuit breaker energy storage motor failure protection device and method for preventing energy storage motor failure |
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| CN201610236959.4A CN105720557A (en) | 2016-04-15 | 2016-04-15 | Circuit breaker energy storage motor failure protection device and method for preventing energy storage motor failure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086538A (en) * | 2017-06-07 | 2017-08-22 | 国网安徽省电力公司安庆供电公司 | A kind of energy storage motor control loop of self-energy sulfur hexafluoride circuit breaker |
| CN107884711A (en) * | 2017-12-18 | 2018-04-06 | 国家电网公司 | Breaker method of testing and terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103384059A (en) * | 2013-07-08 | 2013-11-06 | 中国科学院等离子体物理研究所 | Vacuum circuit breaker energy storage motor protection circuit |
| CN104269828A (en) * | 2014-10-27 | 2015-01-07 | 江苏省电力公司常州供电公司 | Protective circuit for energy storage driving motor of high-voltage circuit-breaker |
| CN105551842A (en) * | 2015-12-08 | 2016-05-04 | 国网上海市电力公司 | Method and device for preventing failure of circuit breaker energy storage motor |
-
2016
- 2016-04-15 CN CN201610236959.4A patent/CN105720557A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103384059A (en) * | 2013-07-08 | 2013-11-06 | 中国科学院等离子体物理研究所 | Vacuum circuit breaker energy storage motor protection circuit |
| CN104269828A (en) * | 2014-10-27 | 2015-01-07 | 江苏省电力公司常州供电公司 | Protective circuit for energy storage driving motor of high-voltage circuit-breaker |
| CN105551842A (en) * | 2015-12-08 | 2016-05-04 | 国网上海市电力公司 | Method and device for preventing failure of circuit breaker energy storage motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086538A (en) * | 2017-06-07 | 2017-08-22 | 国网安徽省电力公司安庆供电公司 | A kind of energy storage motor control loop of self-energy sulfur hexafluoride circuit breaker |
| CN107884711A (en) * | 2017-12-18 | 2018-04-06 | 国家电网公司 | Breaker method of testing and terminal |
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