CN103378652A - Intelligent control method of electrified operation mechanism of high-voltage switch - Google Patents
Intelligent control method of electrified operation mechanism of high-voltage switch Download PDFInfo
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Abstract
The invention relates to an intelligent control method of an electrified operation mechanism of a high-voltage switch. The method includes the steps of importing configuration files and historical data of a motor to form a stepping curve in the motor transmission and energy storage process in a fitting mode, monitoring the real-time process amount of the motor and the dynamic process of switching on and switching off of the switch, performing analysis in combination with the stepping curve of the transmission motor to obtain a soft contact signal of the position of the switch and a soft contact signal of energy storage of a spring, if the switch operation is not in place and a hard contact signal of the switch is consistent with the soft contact signal, calculating and outputting the position of a movable contact of the switch and the triggering angle of a rectification power supply of the transmission motor, and returning to the step of monitoring the real-time process amount of the motor and the dynamic process of the operation mechanism. While self-diagnosis is achieved, speed changing control is performed on the motor, the phenomena such as coil burnt damage caused by frustration of an operation process or being not in place of the opening state are avoided, and the motor is protected to the maximum. The intelligent operation of the operation mechanism can be achieved without changing the original structure, and the method is easy and convenient to use and high in performance cost ratio.
Description
Technical field
The present invention relates to electric power system high-voltage switch control technology, specifically the intelligence control method of the electrified operating mechanism of a kind of high-voltage switch gear.
Background technology
High voltage switchgear refers to the indoor and outdoor AC-DC switch equipment used in electric power system, be used for high-voltage fence (comprising the users such as power plant, transformer station, electric line and industrial and mining enterprises), both can be according to the operation of power networks needs, high-voltage switch gear is with a part of power equipment or circuit input or out of service, also can when power equipment or line failure, faulty component be excised fast from electrical network, thereby guarantee the normal operation of fault-free part in the electrical network and equipment, operating maintenance personnel's safety.Therefore, high voltage switchgear is very important equipment for power transmission and distribution, its safety, reliably move to electric power system safe, effectively move tool and be of great significance.And high voltage switchgear can be divided into by the difference of its function and efficacy:
(1) switch element and the unit equipment centered by switch: comprise circuit breaker, isolating switch (also being isolation switch), earthed switch (also being grounding switch) etc.Primary cut-out is the main electric control appliance of electric substation, has arc quenching characteristic, and when system normally moved, it can cut off and connect zero load and the load current of circuit and various electric equipments; When system breaks down, it and Cooperation with Relay, rapid disengagement failure electric current is to prevent expansion accident scope.Isolating switch is the device for switching that guarantees work safety in high-voltage electric device, and is simple in structure, do not have arc-control device, can not be used for switching on and off the load current circuit.Acting as of isolating switch: insulating power supply, little current circuit is connected and cut off to grid switching operation.Static contact of grounding switch is fixed on the contact tube of isolating switch, and moving contact is installed in the end of the earthing switch blade aluminum pipe on the base.
(2) complete set of equipments take switch as primary clustering: said elements and combination thereof are combined into the product with relative complete use function with other electric equipment products.Such as metal enclosed switchgear (switch cubicle), Cubicle Gas-Insulated Switchgear (GIS) and pre-mounted box type transformer substation etc.The high-voltage switch gear complete set of equipments, with above-mentioned switch element and the combination and other electric equipment products carry out reasonable disposition, organically be combined in the metal enclosed shell, have the product of relatively complete use function.Such as metal enclosed switchgear (switch cubicle), Cubicle Gas-Insulated Switchgear (GIS) and high voltage/low voltage preassembled transformer station etc.
Along with the development of power industry, it is intelligent that the switchgear of modern electrical power trans mission/distribution system not only requires the aspects such as control and protection to realize, also requires the operation of switchgear to realize intelligent.Operating mechanism is the important component part of the unit equipment of high-voltage switch gear, high-voltage switch gear and complete set of equipments etc., and wherein the operating mechanism of circuit breaker is comprised of energy-storage units, control unit and power transfer unit.
Spring operating mechanism is the major way that the killer switch operation is adopted at present: stored energy mechanism is general only to the switching-in spring energy storage, and the tripping operation spring generally is by energy storage in the breaker closing course of action.Spring operating mechanism of circuit breaker also is the concrete actuator of a deciliter circuit, open failure, deciliter once is a circulation, and its stability is extremely important.At present thermal energy storage process is not in real time detected, whether the energy storage result just obtains spring energy-storage by a hard contact point signal and finishes, and lacks to the analysis of thermal energy storage process with to monitoring and the control of real-time status.
Motor transmission mechanism is the main operating mechanism that the operating mechanism of isolating switch and earthed switch adopts.The on off control of its driving motor just relies on the judgement of auxiliary hard contact point signal switch position signal.The driving torque that causes in the card of transmission mechanism, the situation such as puckery is obstructed, perhaps owing to send on the auxiliary contact position signalling mistake and cause normally start and stop of driving motor.Motor transmission mechanism also needs the method for a dynamic monitoring and Based Intelligent Control.
Operating mechanism is in complete set of equipments, and the killer switch operating mechanism adopts the energy-stored spring operating mechanism, the mode that part isolating switch and earthed switch also adopt driving motor to drive.No matter be that energy storage motor and driving motor are constant rotational speed when operation at present, ignored the problem of the aspects such as electric network composition situation and electrical safety distance, can propose new challenge and bring certain harm to electric equipment power network safety operation.Such as very fast transient overvoltage (the very fast transient overvoltage that can produce steep wave degree, high amplitude when the unloaded short bus of isolator operation, VFTO), transient state housing current potential and electromagnetic interference, the equipment with winding of GIS and connection thereof, the secondary device insulation that is connected with housing are produced harm, the work of interference secondary device has a strong impact on the safe operation of equipment.There are these problems equally in the integrated prepackage type box-type substation.
In order to reduce the impact of energy storage motor or motor-driven, present switch generally all adopts the mode of mechanical damping; In order to weaken the phenomenons such as VFTO, prior art is generally from improving the class of insulation, increasing the measures such as auxiliary circuit, electronic operating mechanism, increased complexity and the cost of mechanism, and the technical scheme of processing from the intelligent angles such as speed Control of energy storage motor or driving motor there is not yet report.
Summary of the invention
There are complex structure, cost height for the electrified operating mechanism of prior art high-voltage switch; Can not realize the weak points such as intellectualized operation and autodiagnosis, the invention provides a kind of dynamic process to electrified operating mechanism to monitor, realize the intelligence control method of the electrified operating mechanism of high-voltage switch gear of autodiagnosis.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The intelligence control method of the electrified operating mechanism of high-voltage switch gear of the present invention may further comprise the steps:
Initialization, importing configuration files and motor historical data according to motor historical data and design parameter, simulate the stepping curve in motor-driven and the thermal energy storage process;
When motor-driven or energy storage motor carry out spring energy-storage, the dynamic process of monitoring motor real-time process amount and switch folding, the overall process measurement is carried out in action to operating mechanism;
According to the statistics of measurement amount and historical data, analyze in conjunction with the stepping curve of driving motor, obtain the soft contact point signal of the position of the switch or the soft contact point signal of spring energy-storage;
Judge according to soft contact point signal and hard contact point signal whether the operation of switch or thermal energy storage process are finished;
If do not finish, then continue and judge whether hard contact point signal and soft contact point signal are unified;
If hard contact point signal and soft contact point signal are unified, then calculate the stepping position when front motor, stepping curve and AC electric quantity according to motor, calculate Trigger Angle and the output of the rectifier power source of driving motor at this moment, motor is realized speed Control, return the dynamic process of monitoring motor real-time process amount and switch folding, the overall process measuring process is carried out in action to operating mechanism.
The present invention is further comprising the steps of:
If hard contact point signal and soft contact point signal disunity are then exported hard contact point signal, the operating process data deposit the failure operation process database in and finish this control procedure.
If operate successfully, then operating process data deposit successfully the operating process database in and finish this control procedure.
In the statistics according to measurement amount and historical data, carry out in the analytical procedure further comprising the steps of in conjunction with the stepping curve of energy storage motor or driving motor:
Above-mentioned analysis result is formed message, with soft message formal output.
The soft contact point signal of spring energy-storage is to obtain in conjunction with the current stepping length of motor.
Described measurement amount comprises: current of electric, electric moter voltage, Motor torque, operating mechanism temperature; The hard contact point signal of motor speed and operating mechanism.
Stepping curve in described motor-driven or the thermal energy storage process is:
Wherein l is the length of the current motion of motor, and P is current stepping position, t be driving motor in the time of current operation,
Be the pace of change of motor, v is motor speed.
Described statistics according to measurement amount and historical data, analyze in conjunction with the stepping curve of driving motor and to be:
Utilize the data of memory, use and dynamically follow the tracks of the parameter that picks out in the stepping curve, obtain motor speed in the current running, realize the speed Control to motor;
Stepping curve according to current motor speed and motor calculates the power that driving motor will be exported;
In given motor stepping length, dynamically control the moment of motor output, according to the situation of current motor stepping, provide the position of switch or position, the operating mechanism dynamic running process information of energy storage simultaneously.
The present invention has following beneficial effect and advantage:
1. the inventive method provides a kind of overall process of carrying out to operating mechanism to monitor, can realize again a kind of intelligence control method of autodiagnosis, can pass through simultaneously the statistics of historical data and work as the stepping length of front motor, the soft contact point signal of spring energy-storage situation or the position of the switch is provided, when the isolating switch responsiveness is slower, separating brake back loading side residual voltage is lower, and the VFTO amplitude that produces in combined floodgate, the sub-switching operation process is also lower;
The inventive method monitoring motor output torque in the scope of operation, realize spring at thermal energy storage process without impact, motor is carried out speed Control; The open and close course of action of isolating switch and earthed switch is driven by the driving motor direct change, reduces harmonic wave by reducing arcing time, thereby further reduces harmonic wave to the radiation of transformer, is conducive to prolong the useful life of insulating oil and insulating paper;
3. the operating mechanism Oscillation Amplitude when reducing motor energy storage or motor-driven; Avoid because of the transmission mechanism card, the operating process that puckery grade causes is obstructed, and closes or to open state not in place, and coil such as burns out at the phenomenon;
4. by speed Control, can increase the pressure of isolating switch contact, improve the reliability of electrical network contact point; Faultless gear change when start and stop is controlled, and reduces the mechanical fatigue of operating mechanism; Motor is protected in periodically initiatively current limit protection of motor to the utmost;
To operating mechanism in the real time execution process, can carry out real-time examination and repair and Stateful Inspection; Flexible operation, noise is low;
6. by the adjusting of circuit breaker " oco " logic and time, energy storage motor is carried out fast energy storage control, more effectively cooperate reclosing logic.
7. the soft contact point signal of the position by breaker energy storage situation or disconnecting link are provided, the mutual verification of contact point signal hard with it has improved the accuracy of energy storage situation or switch position signal.
8. from installing and the use consideration, this invention is easy for installation, does not change or change as far as possible existing cabinet body structure and related components; Operating mechanism after use the method can not affect manual operation.
Description of drawings
Fig. 1 is the schematic diagram of control device project organization of the present invention;
Fig. 2 is the matched curve schematic diagram of variable speed electric motors, particularly stepping overall length and speed among the present invention;
Fig. 3 is control method flow chart of the present invention.
Embodiment
The present invention is further elaborated below in conjunction with Figure of description.
The intelligence control method of the electrified operating mechanism of high-voltage switch gear of the present invention may further comprise the steps:
Initialization, importing configuration files and motor historical data according to motor historical data and configuration parameter, simulate the stepping curve in motor-driven or the thermal energy storage process;
During motor-driven or energy storage motor when carrying out spring energy-storage, the dynamic process of monitoring motor real-time process amount and switching manipulation, action is carried out overall process and is measured to operating mechanism;
Statistics according to measurement amount and historical data, stepping curve in conjunction with driving motor or energy storage motor is analyzed (the step machine distance and the actual operating distance that should finish that mainly are the comparison motor), the auxiliary signal that obtains the position of the switch or energy storage position is soft contact point signal (if step distance equals operating distance, soft contact point signal is that operating process is finished, otherwise is non-finishing);
(namely if energy storage motor, hard contact point signal is whether energy storage motor finishes whole thermal energy storage process to judge according to soft contact point signal and hard contact point signal whether the operation of switch is finished; If isolating switch or earthed switch, hard contact point signal is the folding position signalling of switch; Soft contact point signal is whether energy storage motor or driving motor have finished operating distance).
If operating process is not finished, then continue and judge whether hard contact point signal and soft contact point signal are unified;
If (this hard contact point signal is different and different according to application places: be applied in the operating mechanism of circuit breaker, this hard contact point signal is that energy storage has been finished to hard contact point signal; The position signalling that is applied in isolating switch or earthed switch and is switch opens or close) contact point signal soft with it is unified, then calculate current switch movable contact point position, stepping curve and alternating current electric parameters according to motor, calculate the next rotating speed that constantly should export of energy storage motor or driving motor, according to the model of motor, further obtain the control command of next constantly motor and output to motor.Return the dynamic process of monitoring motor real-time process amount and switch folding, next constantly overall process measurement is carried out in action to operating mechanism.
If hard contact point signal and soft contact point signal disunity are then exported hard contact point signal or soft message, report switch existing problems, the operating process data deposit the failure operation process database in and finish this control procedure;
If hard contact point signal and soft contact point signal are finished synchronously, then operating process data deposit successfully the operating process database in and finish this control procedure.
As shown in Figure 1, controller architecture schematic diagram for the inventive method application, the inventive method is exactly the motor-driven curve according to the electric moter voltage, electric current and the ambient temperature that monitor, the measurement of humidity equivalent and match, calculate pilot angle and the torque of motor power, thereby realize the dynamic control to operating mechanism.In motor output torque process, according to the current of electric of the parameters such as motor and operating mechanism and Real Time Monitoring, voltage, moment of torsion etc., the speed Control that motor is carried out, thus the spring of realizing circuit breaker without impact energy storage or to isolating switch etc. without impacting transmission.
The soft contact point signal of spring energy-storage is to obtain in conjunction with the current stepping length of energy storage motor, and this signal is the soft contact point signal that relaying protection and TT﹠C system are judged the spring energy-storage degree; The soft contact point signal of isolating switch or earthed switch also is that the stepping length in conjunction with driving motor obtains.Because in actual applications, no matter be energy storage motor or driving motor, its operating distance is certain.The real-time relatively size of the stepping length of motor and its operating distance, energy storage puts in place or switching manipulation puts in place if equate to be, and with this signal as soft contact point signal.
As shown in Figure 3, the inventive method concrete steps are:
The first step: at first control section is carried out initialization;
Second step: importing configuration files and motor historical data according to motor historical data and design configurations parameter, simulate the stepping curve in motor-driven and the thermal energy storage process; The following motor movement equation of this stepping curve negotiating is expressed:
Wherein l is the length of the current stepping of motor, and P is the switch current location, t be driving motor in the time of current operation,
Be the pace of change of motor, v is motor speed.As shown in Figure 2, it is schematic diagram.
The 3rd step: when motor-driven or energy storage motor carry out spring energy-storage, monitoring motor real-time process amount and dynamic process, action is carried out overall process and is measured to operating mechanism, again according to the statistics of measurement amount and historical data, stepping curve in conjunction with motor is analyzed, and obtains soft contact point signal.
This step is the collection to motor movement process live signal, and the physical quantity that needs to measure is: motor alternating voltage and electric current
Direct voltage and electric current
Motor torque and operating mechanism temperature etc.Communications parameter or idle contact output parameter: the real-time sampling amount of motor; Electrical motor gearshift control curve; The model real-time identification parameter (calculating by least square method) of motor; The scope of exerting oneself of motor (obtaining by inquiry parameter of electric machine table); Operating mechanism statistics degree of fatigue (obtaining according to historical data with when the operational factor of front motor) etc.In the present embodiment, above-mentioned analysis result is formed message, export with digital communication.
The 4th step: according to the soft contact point signal of operating mechanism contact position (by motor speed and running time correspondence go out the range ability of motor, the distance between two contacts of distance=switch that this motor drags) and the hard contact point signal of switch closure (refer to motor close a floodgate the signal that puts in place) decision operation whether put in place; Whether this step is the scope according to the motor output torque, judges energy storage motor or driving motor, be failed operation, if be failed operation, then all devices of operating mechanism resets.In the present embodiment, whether arrive simultaneously decision operation whether to finish by soft contact point signal and hard contact point signal.The hard contact point signal of operating mechanism and the soft contact point signal in the control appliance are carried out logic and operation, are 1 to be that hard contact point signal and soft contact point signal are 1 simultaneously when operation result, think that then energy storage has been finished or switching manipulation puts in place, and this course of action finishes; Otherwise be 0 to be hard contact point signal and soft contact point signal when having one to be 0 when operation result, then think not success of this operation to deposit for the 5th step in;
The 5th step: continuing and judge whether hard contact point signal and soft contact point signal are unified, is that hard contact point signal and soft contact point signal are 0 simultaneously such as unification, thinks that then switch closure or opening operation do not put in place, continue for the 6th step;
The 6th step: when hard contact point signal and the unification of soft contact point signal, think that then the operating mechanism action is normal, calculate current switch movable contact point position, stepping curve and AC electric quantity according to motor, calculate Trigger Angle and the output of the rectifier power source of driving motor at this moment, turned back to for the 3rd step, the dynamic process of monitoring motor real-time process amount and switch folding, the overall process measuring process is carried out in action to operating mechanism.
In the 5th step, if hard contact point signal and soft contact point signal disunity think that then operation has the some problems of existence, export hard contact point signal and soft contact message, the data of operating process deposit the miss data storehouse in and finish this control procedure;
Utilize historical data, use and dynamically follow the tracks of the parameter that picks out in the equation of motion model.Obtain v value in the current running.According to current v value and the model of driving motor, calculate the power that driving motor will be exported, in given drive length, dynamically control the moment of motor output, simultaneously according to the situation of current driving motor stepping, provide the information such as position, operating mechanism dynamic running process of energy storage state or switch.
Claims (8)
1. the intelligence control method of the electrified operating mechanism of a high-voltage switch gear is characterized in that may further comprise the steps:
Initialization, importing configuration files and motor historical data according to motor historical data and design parameter, simulate the stepping curve in motor-driven and the thermal energy storage process;
When motor-driven or energy storage motor carry out spring energy-storage, the dynamic process of monitoring motor real-time process amount and switch folding, the overall process measurement is carried out in action to operating mechanism;
According to the statistics of measurement amount and historical data, analyze in conjunction with the stepping curve of driving motor, obtain the soft contact point signal of the position of the switch or the soft contact point signal of spring energy-storage;
Judge according to soft contact point signal and hard contact point signal whether the operation of switch is finished;
If do not finish, then continue and judge whether the hard contact point signal of switch and soft contact point signal are unified;
If the hard contact point signal of switch and soft contact point signal are unified, then calculate current switch movable contact point position, stepping curve and AC electric quantity according to motor, calculate Trigger Angle and the output of the rectifier power source of driving motor at this moment, motor is realized speed Control, return the dynamic process of monitoring motor real-time process amount and switch folding, the overall process measuring process is carried out in action to operating mechanism.
2. by the intelligence control method of the electrified operating mechanism of high-voltage switch gear claimed in claim 1, characterized by further comprising following steps:
If hard contact point signal and soft contact point signal disunity are then exported hard contact point signal, the operating process data deposit the failure operation process database in and finish this control procedure.
3. by the intelligence control method of the electrified operating mechanism of high-voltage switch gear claimed in claim 1, it is characterized in that: if operate successfully, then operating process data deposit successfully the operating process database in and finish this control procedure.
4. press the intelligence control method of the electrified operating mechanism of high-voltage switch gear claimed in claim 1, it is characterized in that: in the statistics according to measurement amount and historical data, carry out in the analytical procedure further comprising the steps of in conjunction with the stepping curve of energy storage motor or driving motor:
Above-mentioned analysis result is formed message, with soft message formal output.
5. by the intelligence control method of the electrified operating mechanism of high-voltage switch gear claimed in claim 1, it is characterized in that: the soft contact point signal of spring energy-storage is to obtain in conjunction with the current stepping length of motor.
6. by the intelligence control method of the electrified operating mechanism of high-voltage switch gear claimed in claim 1, it is characterized in that: described measurement amount comprises: current of electric, electric moter voltage, Motor torque, operating mechanism temperature; The hard contact point signal in motor speed and the position of the switch.
7. by the intelligence control method of the electrified operating mechanism of high-voltage switch gear claimed in claim 1, it is characterized in that: the stepping curve in described motor-driven or the thermal energy storage process is:
Wherein l is the length of the current motion of motor, and P is the switch current location, t be driving motor in the time of current operation,
Be the pace of change of motor, v is motor speed.
8. by the intelligence control method of the electrified operating mechanism of high-voltage switch gear claimed in claim 1, it is characterized in that: described statistics according to measurement amount and historical data, analyze in conjunction with the stepping curve of driving motor and to be:
Utilize the data of memory, use and dynamically follow the tracks of the parameter that picks out in the stepping curve, obtain motor speed in the current running, realize the speed Control to motor;
Stepping curve according to current motor speed and motor calculates the power that driving motor will be exported;
In given motor-driven length, dynamically control the moment of motor output, simultaneously according to the situation of current driving motor operation, provide position, the operating mechanism dynamic running process information of switch.
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| CN201210120406.4A CN103378652B (en) | 2012-04-23 | 2012-04-23 | Intelligent control method of electrified operation mechanism of high-voltage switch |
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| CN110207977A (en) * | 2019-04-16 | 2019-09-06 | 平高集团有限公司 | A kind of test method of the storage transmission system for disc spring hydraulic mechanism |
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| CN103378652B (en) | 2015-07-15 |
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Effective date of registration: 20160331 Address after: 110144 Shenyang economic and Technological Development Zone, Liaoning, Shenyang Road, No. 32 Patentee after: SIFANG-TBEA INTELLIGENT ELECTRICAL CO., LTD. Address before: 110144 Shenyang economic and Technological Development Zone, Liaoning Road, No. 32 Patentee before: TBEA Shenyang Transformer (Group) Co., Ltd. |
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Address after: No.32, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee after: TBEA Smart Energy Co.,Ltd. Address before: No.32, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee before: SIFANG TBEA INTELLIGENT ELECTRIC CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |