CN103368495A - One-driven-two control method and control system of high voltage frequency converter - Google Patents
One-driven-two control method and control system of high voltage frequency converter Download PDFInfo
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- CN103368495A CN103368495A CN2013103355877A CN201310335587A CN103368495A CN 103368495 A CN103368495 A CN 103368495A CN 2013103355877 A CN2013103355877 A CN 2013103355877A CN 201310335587 A CN201310335587 A CN 201310335587A CN 103368495 A CN103368495 A CN 103368495A
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Abstract
The invention discloses a one-driven-two control method and a one-driven-two control system of a high voltage frequency converter. The one-driven-two control method comprises the following steps of: performing remote closing/tripping operation on a contactor of a high-voltage frequency converter by a human-computer interface of a distributed control system (DCS); driving a switch to trip after the high-voltage frequency converter has an electric loop fault, and feeding back a position state of the switch and an alarm signal of a mechanical fault in a frequency converter cabinet to a logic control module of the DCS to form monitoring of the DCS on the high-voltage frequency converter; after the logic control module of the DCS receives the signal, emitting a frequency converter control instruction to realize remote closing and tripping operation of the contactor of the frequency converter and providing corresponding normal signal and alarm signal; and realizing one-driven-two control of the high-voltage frequency converter. The control method and the control system have the advantages of simple design, high efficiency, wide application range and capabilities of realizing automatic conversion control over the high-voltage frequency converter, reducing the coordination work of a high-voltage frequency converter manufacturer and each party and reducing the maintenance cost.
Description
Technical field
The present invention relates to control method and the control system of a kind of high voltage converter " one drag two ", can be applicable to the various water pumps of the industries such as large-scale mining industry factory, petrochemical industry, municipal water supply, iron and steel metallurgy, electric power energy.Belong to the electric equipment technical field.
Background technology
Along with the development of variable-frequency control technique, be widely used as the high voltage converter speed adjusting technique of large capacity transmission, frequency control be current high efficiency, the performance that extensively adopts in the world good, use wide new technology.It adopts microcomputer control, power electronic technology and motor-driven technology to obtain the function of stepless speed regulation of industrial AC induction motor.In the field, power plant, high-tension motor utilizes the high voltage converter device can realize stepless speed regulation, both can satisfy production process to the requirement of motor speed adjusting control, and energy savings significantly reduces production costs again.Adopt frequency control, have that adjusting speed accuracy is high, starting current is little, can reduce mechanical oscillation and friction, simple operation and other advantages, improved automatization level, realize electric motor soft-start function, prolonged electrical machinery life, frequency control is used in power plant, can obtain larger economic benefit." one drag two " of high voltage converter more can reduce investment outlay, and reduces cost.
Existing high voltage converter " one drag two " control method has multiple, and the various control logic is different.Existing high voltage converter " one drag two " control logic realizes in the control system that frequency converter carries, so that high voltage converter producer need to understand and just can produce after the concrete parameter of motor and carry out the logic control design, the cooperating of high voltage converter producer and each side increases like this, increase the design difficulty of high voltage converter producer, caused impact for simultaneously the production duration.
Summary of the invention
One of purpose of the present invention is in order to overcome prior art medium-high voltage frequency converter control logic design inconvenience, to waste time and energy, the control method of a kind of high voltage converter " one drag two " being provided.
Two of purpose of the present invention is in order to overcome prior art medium-high voltage frequency converter control logic design inconvenience, to waste time and energy, the control system of a kind of high voltage converter " one drag two " being provided.
One of purpose of the present invention can be achieved through the following technical solutions:
The control method of a kind of high voltage converter " one drag two "; it is characterized in that: utilize distributed monitoring control system that high voltage converter is controlled and monitored; specifically control and the monitoring of high voltage converter are realized in conjunction with the microcomputer protecting device in the frequency-charger cabinet in the man-machine interface of distributed monitoring control system by operation or operations staff
1) in the man-machine interface of distributed monitoring control system the contactor of high voltage converter is carried out remote switching/trip operation, consist of distributed monitoring control system to the control of high voltage converter;
2) utilize the microcomputer protecting device that is installed in the high voltage converter cabinet to detect high voltage converter electric loop fault rear drive switch trip, the location status of this switch is fed back to the Logic control module of distributed monitoring control system, simultaneously the alarm signal of mechanical breakdown in the frequency-charger cabinet is fed back to the Logic control module of distributed monitoring control system by the electrical measurement signal that is installed on the instrument transformer acquisition in the frequency-charger cabinet, consist of distributed monitoring control system to the monitoring of high voltage converter;
3) Logic control module of distributed monitoring control system receives by the microcomputer protecting device detection signal in the frequency-charger cabinet, Logic control module carries out logical process according to the service requirement of setting, then send distant place combined floodgate and trip operation that the Frequency Converter Control instruction realizes the frequency converter contactor, and provide corresponding normal signal and alarm signal; Realize the control of high voltage converter " one drag two ".
One of purpose of the present invention can also be achieved through the following technical solutions:
Further technical scheme is: when by man-machine interface the contactor of high voltage converter being carried out remote switching/trip operation, the contactor by two loop control logics control high voltage converters closes a floodgate/tripping operation:
1) the combined floodgate logic is sent reclosing command by man-machine interface, and high voltage converter is ready, and contactor closes a floodgate; Perhaps when high voltage converter was ready, delaying time, the contactor of high voltage converter closed a floodgate after 1 second;
2) conversion logic when high voltage converter breaks down, changes power frequency over to and allows, and the bypass of loop control logic is closed a floodgate; When one of loop control logic motor broke down, the master control path of loop control logic closed a floodgate, and automatically changed two pump frequency conversion operation of loop control logic over to; When the pump of one of high voltage converter and loop control logic all breaks down, automatically change two motor power frequency operation of loop control logic over to.
Further technical scheme is: describedly be provided with the combined floodgate loop control logic and the conversion logic control loop forms following logic control:
1) KM41 or KM51 combined floodgate logic, the long-range reclosing command that sends of man-machine interface, KM41, KM43, KM51, KM52 or KM41, KM42, KM51, KM53 are in gate-dividing state, and frequency converter is ready, and when above-mentioned condition satisfied, KM41 or KM51 closed a floodgate;
2) KM42 or KM52 combined floodgate logic, the long-range reclosing command that sends of man-machine interface, KM42, KM43, KM51, KM52 or KM52, KM53, KM41, KM51 are in gate-dividing state, and frequency converter is ready, and when above-mentioned condition satisfied, KM42 or KM52 closed a floodgate;
3) KM43 or KM53 combined floodgate logic, the long-range reclosing command that sends of man-machine interface, KM42, KM41, KM43 or KM52, KM51, KM53 are in gate-dividing state, KM42 or KM52) the separating brake time-delay is after 1 second; Perhaps send frequently requirement of cut when frequency converter failure, and KM41, KM42, KM43 or KM51, KM52, KM53 be in gate-dividing state, KM42 or the time-delay of KM52 separating brake are after 1 second; When above-mentioned condition satisfies respectively, KM43 or KM53) automatic closing;
4) conversion logic, A pump or B pump are in running status, when frequency converter breaks down, change power frequency over to and allow, and KM43 or KM53 close a floodgate; When A pump or B pump motor break down, the KM51 that closes, KM52 or KM41, KM4), automatically change the operation of B pump or A pump frequency conversion over to; When frequency converter and A pump or B failure of pump, KM53 or KM43 close a floodgate, and change B pump or A pump motor power frequency operation over to; Complete when the frequency converter maintenance, automatically change this side converting operation over to.
Two of purpose of the present invention can be achieved through the following technical solutions:
The control system of a kind of high voltage converter " one drag two ", comprise distributed monitoring control system and high voltage converter cabinet, it is characterized in that: in distributed monitoring control system, be provided with man-machine interface and Logic control module, the control input end of Logic control module connects the remote control signal output of man-machine interface, the feedback input end of Logic control module connects the feedback signal output of high voltage converter cabinet, the control signal output of Logic control module connects the control signal input of high voltage converter cabinet, and the warning of Logic control module and state information output connect the signal input part of man-machine interface; Man-machine interface by distributed monitoring control system is carried out remote switching/trip operation to the contactor of high voltage converter, consists of distributed monitoring control system to the control loop of high voltage converter; The microcomputer protecting device that is installed in the high voltage converter cabinet detects high voltage converter electric loop fault rear drive switch trip; the alarm signal of mechanical breakdown in the frequency-charger cabinet is fed back to the Logic control module of distributed monitoring control system by the electrical measurement signal that is installed on the instrument transformer acquisition in the frequency-charger cabinet, consist of distributed monitoring control system to the monitoring circuit of high voltage converter.
Two of purpose of the present invention can also be achieved through the following technical solutions:
Further technical scheme is: Logic control module is judged by input processing logical block, fault and processing logic unit, state processing logical block and output order logical block consist of; Three inputs of input processing logical block connect respectively the remote control commands output of man-machine interface, mechanical breakdown feedback signal output and the electrical measurement signal output of high voltage converter cabinet; The signal input part of state processing logical block connects the on off state feedback output end of high voltage converter cabinet, one of its output connect that fault is judged and the input of processing logic unit two, output two connect one of input of man-machine interfaces; Fault is judged and one of input of processing logic unit connect the input processing logical block output two, input three connect the output order logical blocks output two, he fault is judged and one of output of processing logic unit connect the output order logical block input two, output two connect man-machine interfaces input two; One of output of input processing logical block connects the control signal input of high voltage converter cabinet by the output order logical block.
Further technical scheme is: be provided with combined floodgate loop control logic and conversion logic control loop in Logic control module.
Further technical scheme is: describedly be provided with the combined floodgate loop control logic and the conversion logic control loop is formed by connecting by isolating switch KM41, KM51, KM42, KM52, KM43, KM53; KM43 is connected across between water pump A and the 6KV A, and KM53 is connected across between water pump B and the 6KV B; KM41 connects with QS41 by high voltage converter and KM42 with after QS42 connects, and is in parallel with KM43; KM51 connects with QS51 by high voltage converter and KM52 with after QS52 connects, and is in parallel with KM53.
Beneficial effect of the present invention:
1, the present invention is based on distributed monitoring control system and realizes controlling for high voltage converter " one drag two ", namely utilize distributed monitoring control system that high voltage converter is controlled and monitored, control and monitoring to high voltage converter are realized in the man-machine interface of distributed monitoring control system by operation or operations staff, namely just can be to high voltage converter be controlled and is monitored by setup control logic in distributed monitoring control system, need not the control system of utilizing high voltage converter to carry, can the production of high voltage converter be affected because of the difference of the current supply circuit figure of motor, thereby reduce the impact of high voltage converter on the duration of a project.Solve in the prior art frequency converter producer and need to understand the problem that just can produce and carry out the logic control design after the concrete supply power mode of motor.Have simplicity of design, efficient beneficial effect high and applied widely.
2, the control system that the present invention relates to plays great role to the control of high voltage converter, can realize the automatic conversion and control to high voltage converter fully; Can operate and change high pressure frequency transformer control module by man-machine interface, do not need the technical staff of high voltage converter producer to come on-the-spot high voltage converter to be operated and to change, reduce the cooperating of high voltage converter producer and each side, reduced the impact on the duration of a project; Can also reduce the field management work to high voltage converter, thereby greatly reduce maintenance cost.
Description of drawings
Fig. 1 is the block diagram of the control system that the present invention relates to.
Fig. 2 is the block diagram of the embodiment 1 of the control system that the present invention relates to.
Fig. 3 is a kind of high voltage converter cabinet construction of switch schematic diagram that the present invention relates to.
Fig. 4 is logic module flow chart of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
Specific embodiment 1:
With reference to Fig. 1, the control system of the high voltage converter that the present embodiment relates to " one drag two ", comprise distributed monitoring control system and high voltage converter cabinet 6, in distributed monitoring control system, be provided with man-machine interface 5 and Logic control module, the control input end of Logic control module connects the remote control signal output 5-1 of man-machine interface 5, the feedback input end of Logic control module connects the feedback signal output of high voltage converter cabinet 6, the control signal output of Logic control module connects the control signal input of high voltage converter cabinet 6, and the warning of Logic control module and state information output connect the signal input part of man-machine interface 5; The contactor of the 5 pairs of high voltage converters in man-machine boundary by distributed monitoring control system carries out remote switching/trip operation, consists of distributed monitoring control system to the control loop of high voltage converter; The microcomputer protecting device that is installed in the high voltage converter cabinet detects high voltage converter electric loop fault rear drive switch trip; the alarm signal of mechanical breakdown in the frequency-charger cabinet is fed back to the Logic control module of distributed monitoring control system by the electrical measurement signal that is installed on the instrument transformer acquisition in the frequency-charger cabinet, consist of distributed monitoring control system to the monitoring circuit of high voltage converter.
With reference to Fig. 2, the Logic control module of the present embodiment is judged by input processing logical block 1, fault and processing logic unit 2, state processing logical block 3 and output order logical block 4 consist of; Three inputs of input processing logical block 1 connect respectively the remote control commands output 5-1 of man-machine interface 5, mechanical breakdown feedback signal output 6-1 and the electrical measurement signal output 6-3 of high voltage converter cabinet 6; The signal input part of state processing logical block 3 connects the on off state feedback output end 6-2 of high voltage converter cabinet 6, one of its output connect that fault is judged and the input of processing logic unit 2 two, output two connect one of input of man-machine interfaces 5; Fault is judged and one of input of processing logic unit 2 connect input processing logical block 1 output two, input three connect output order logical blocks 4 output two, he fault is judged and one of output of processing logic unit 2 connect output order logical block 4 input two, output two connect man-machine interfaces 5 input two; One of output of input processing logical block 1 connects the control signal input of high voltage converter cabinet 6 by output order logical block 4.
In this enforcement:
Described distributed monitoring control system can adopt the collecting and distributing control system of routine techniques, in distributed monitoring control system, be provided with man-machine interface 5, can adopt the man-machine interface of routine techniques, described Logic control module can form with computer software design in distributed monitoring control system by routine techniques.
The microcomputer protecting device that is installed in the frequency-charger cabinet comprises the single-chip microcomputer of routine techniques and is built in the interior conventional Real-Time Monitoring program of monolithic; the voltage/current instrument transformer; detect the instantaneous voltage/electric current of electric loop and send into single-chip microcomputer by the voltage/current instrument transformer; but converted to the Logic control module that is sent to distributed monitoring control system behind the analog or digital signal of remote transmission by single-chip microcomputer; but be sent to the Logic control module of distributed monitoring control system after perhaps judging malfunction by single-chip microcomputer and described signal being converted to the analog or digital signal of remote transmission; Logic control module sends the order-driven switch trip, the position of the switch state feedback signal in the frequency-charger cabinet that Logic control module is sent unit here simultaneously; the alarm signal of mechanical breakdown in the frequency-charger cabinet; the electrical measurement signal that obtains by the instrument transformer that is installed in the frequency-charger cabinet reflects by man-machine interface 5.
With reference to Fig. 3, describedly be provided with the combined floodgate loop control logic and the conversion logic control loop is formed by connecting by isolating switch KM41, KM51, KM42, KM52, KM43, KM53; KM43 is connected across between water pump A and the 6KV A, and KM53 is connected across between water pump B and the 6KV B; KM41 connects with QS41 by high voltage converter and KM42 with after QS42 connects, and is in parallel with KM43; KM51 connects with QS51 by high voltage converter and KM52 with after QS52 connects, and is in parallel with KM53.In Logic control module, be provided with combined floodgate loop control logic and conversion logic control loop.Described collection high voltage converter state and fault-signal derive from the microcomputer protecting device that is arranged in the frequency-charger cabinet.Described high voltage converter state and fault-signal comprise that action after the electric loop fault makes alarm signal and the electrical measurement signal of mechanical breakdown in switch trip and location status feedback signal thereof, the frequency-charger cabinet.
With reference to Fig. 3 and Fig. 4; the control method of a kind of high voltage converter " one drag two " that the present embodiment relates to; it is characterized in that: utilize distributed monitoring control system that high voltage converter is controlled and monitored; specifically control and the monitoring of high voltage converter are realized in conjunction with the microcomputer protecting device in the frequency-charger cabinet in the man-machine interface of distributed monitoring control system by operation or operations staff
1) in the man-machine interface of distributed monitoring control system the contactor of high voltage converter is carried out remote switching/trip operation, consist of distributed monitoring control system to the control of high voltage converter;
2) utilize the microcomputer protecting device that is installed in the high voltage converter cabinet to detect high voltage converter electric loop fault rear drive switch trip, the location status of this switch is fed back to the Logic control module of distributed monitoring control system, simultaneously the alarm signal of mechanical breakdown in the frequency-charger cabinet is fed back to the Logic control module of distributed monitoring control system by the electrical measurement signal that is installed on the instrument transformer acquisition in the frequency-charger cabinet, consist of distributed monitoring control system to the monitoring of high voltage converter;
3) Logic control module of distributed monitoring control system receives by the microcomputer protecting device detection signal in the frequency-charger cabinet, Logic control module carries out logical process according to the service requirement of setting, then send distant place combined floodgate and trip operation that the Frequency Converter Control instruction realizes the frequency converter contactor, and provide corresponding normal signal and alarm signal; Realize the control of high voltage converter " one drag two ".
Further, when the contactor by 5 pairs of high voltage converters of man-machine interface carried out remote switching/trip operation, the contactor by two loop control logics control high voltage converters closed a floodgate/tripping operation:
1) the combined floodgate logic is sent reclosing command by man-machine interface, and high voltage converter is ready, and contactor closes a floodgate; Perhaps when high voltage converter was ready, delaying time, the contactor of high voltage converter closed a floodgate after 1 second;
2) conversion logic when high voltage converter breaks down, changes power frequency over to and allows, and the bypass of loop control logic is closed a floodgate; When one of loop control logic motor broke down, the master control path of loop control logic closed a floodgate, and automatically changed two pump frequency conversion operation of loop control logic over to; When the pump of one of high voltage converter and loop control logic all breaks down, automatically change two motor power frequency operation of loop control logic over to.
Further, describedly be provided with the combined floodgate loop control logic and the conversion logic control loop forms following logic control:
1) KM41 or KM51 combined floodgate logic, the long-range reclosing command that sends of man-machine interface (5), KM41, KM43, KM51, KM52 or KM41, KM42, KM51, KM53 are in gate-dividing state, and frequency converter is ready, and when above-mentioned condition satisfied, KM41 or KM51 closed a floodgate;
2) KM42 or KM52 combined floodgate logic, the long-range reclosing command that sends of man-machine interface (5), KM42, KM43, KM51, KM52 or KM52, KM53, KM41, KM51 are in gate-dividing state, and frequency converter is ready, and when above-mentioned condition satisfied, KM42 or KM52 closed a floodgate;
3) KM43 or KM53 combined floodgate logic, the long-range reclosing command that sends of man-machine interface (5), KM42, KM41, KM43 or KM52, KM51, KM53 are in gate-dividing state, KM42 or KM52) the separating brake time-delay is after 1 second; Perhaps send frequently requirement of cut when frequency converter failure, and KM41, KM42, KM43 or KM51, KM52, KM53 be in gate-dividing state, KM42 or the time-delay of KM52 separating brake are after 1 second; When above-mentioned condition satisfies respectively, KM43 or KM53) automatic closing;
4) conversion logic, A pump or B pump are in running status, when frequency converter breaks down, change power frequency over to and allow, and KM43 or KM53 close a floodgate; When A pump or B pump motor break down, the KM51 that closes, KM52 or KM41, KM4), automatically change the operation of B pump or A pump frequency conversion over to; When frequency converter and A pump or B failure of pump, KM53 or KM43 close a floodgate, and change B pump or A pump motor power frequency operation over to; Complete when the frequency converter maintenance, automatically change this side converting operation over to.
With reference to Fig. 4, concrete control flow of the present invention is as follows:
1) by the 5 input instruction of DCS man-machine interface;
The feasibility of 2) carrying out logic by Logical processing unit is judged;
3) feasible Y instruction production logic exports the control loop of high voltage converter to:
4) infeasible N, fault-signal is exported by alarm, has checkout gear to be transported to man-machine interface, reports to the police to reset or handling failure;
5) high voltage converter state and fault-signal input to man-machine interface through DCS signal input line cable-end mouth.
Employing the present invention as shown in Figure 4 realizes that high voltage converter is to the control of two water pumps, one end of described high voltage converter passes through QS41, KM41, QF1 links to each other with 6KV power supply A, pass through QS42, KM51, QF2 links to each other with 6KV power supply B, the other end of high voltage converter passes through QS51, KM42 links to each other with water pump A, pass through QS52, KM52 links to each other with water pump B, water pump A links to each other with 6KV power supply A by KM43, water pump B links to each other with 6KV power supply B by KM53, described QF1, QF2 is the 6kV circuit breaker, KM41, KM42, KM43, KM51, KM52, KM53 is contactor, QS41, QS42, QS51, QS52 is isolating switch.
DCS decentralized control module by high voltage converter " one drag two " is sent logic control:
1) KM41 (KM51) combined floodgate logic: the DCS decentralized control module of high voltage converter " one drag two " is sent reclosing command, KM41, KM43, KM51, KM52 (KM41, KM42, KM51, KM53) are in gate-dividing state, high voltage converter is ready, when above-mentioned condition satisfied, KM41 (KM51) closed a floodgate.
2) KM42 (KM52) combined floodgate logic: the DCS decentralized control module of high voltage converter " one drag two " is sent reclosing command, KM42, KM43, KM51, KM52 (KM52, KM53, KM41, KM51) close a floodgate, KM42 (KM52) is in gate-dividing state, frequency converter is ready, when above-mentioned condition satisfied, KM42 (KM52) closed a floodgate.
3) KM43 (KM53) combined floodgate logic: the DCS decentralized control module of high voltage converter " one drag two " is sent reclosing command, and KM42, KM41, KM43 (KM52, KM51, KM53) are in gate-dividing state, behind KM42 (KM52) the separating brake time-delay 1s; Perhaps send frequently requirement of cut when the high voltage converter fault, and KM41, KM42, KM43 (KM51, KM52, KM53) be in gate-dividing state, behind KM42 (KM52) the separating brake time-delay 1s; When above-mentioned condition satisfies respectively, KM43 (KM53) automatic closing.
4) conversion logic: water pump A (water pump B) is in the converting operation state, when high voltage converter breaks down, changes power frequency over to and allows (frequency conversion is infeasible, just sends power frequency and allows), and KM43 (KM53) closes a floodgate; As water pump A (water pump B) when motor breaks down, close KM51, KM52 (KM41, KM42), automatically change water pump B (water pump A) converting operation over to; When high voltage converter and the equal fault of water pump A (water pump B), KM53 (KM43) closes a floodgate, and changes water pump B (A water pump) motor power frequency operation over to; Complete when the high voltage converter maintenance, automatically change this side converting operation over to.During water pump A, water pump B operation, circuit breaker and isolating switch are "on" position.
Claims (7)
1. the control method of a high voltage converter " one drag two "; it is characterized in that: utilize distributed monitoring control system that high voltage converter is controlled and monitored; specifically control and the monitoring of high voltage converter are realized in conjunction with the microcomputer protecting device in the frequency-charger cabinet in the man-machine interface of distributed monitoring control system by operation or operations staff
1) in the man-machine interface of distributed monitoring control system the contactor of high voltage converter is carried out remote switching/trip operation, consist of distributed monitoring control system to the control of high voltage converter;
2) utilize the microcomputer protecting device that is installed in the high voltage converter cabinet to detect high voltage converter electric loop fault rear drive switch trip, the location status of this switch is fed back to the Logic control module of distributed monitoring control system, simultaneously the alarm signal of mechanical breakdown in the frequency-charger cabinet is fed back to the Logic control module of distributed monitoring control system by the electrical measurement signal that is installed on the instrument transformer acquisition in the frequency-charger cabinet, consist of distributed monitoring control system to the monitoring of high voltage converter;
3) Logic control module of distributed monitoring control system receives by the microcomputer protecting device detection signal in the frequency-charger cabinet, Logic control module carries out logical process according to the service requirement of setting, then send distant place combined floodgate and trip operation that the Frequency Converter Control instruction realizes the frequency converter contactor, and provide corresponding normal signal and alarm signal; Realize the control of high voltage converter " one drag two ".
2. the control method of a kind of high voltage converter according to claim 1 " one drag two ", it is characterized in that: when by man-machine interface the contactor of high voltage converter being carried out remote switching/trip operation, the contactor by two loop control logics control high voltage converters closes a floodgate/tripping operation:
1) the combined floodgate logic is sent reclosing command by man-machine interface, and high voltage converter is ready, and contactor closes a floodgate; Perhaps when high voltage converter was ready, delaying time, the contactor of high voltage converter closed a floodgate after 1 second;
2) conversion logic when high voltage converter breaks down, changes power frequency over to and allows, and the bypass of loop control logic is closed a floodgate; When one of loop control logic motor broke down, the master control path of loop control logic closed a floodgate, and automatically changed two pump frequency conversion operation of loop control logic over to; When the pump of one of high voltage converter and loop control logic all breaks down, automatically change two motor power frequency operation of loop control logic over to.
3. the control method of a kind of high voltage converter according to claim 2 " one drag two " is characterized in that: describedly be provided with the combined floodgate loop control logic and the conversion logic control loop forms following logic control:
1) KM41 or KM51 combined floodgate logic, the long-range reclosing command that sends of man-machine interface (5), KM41, KM43, KM51, KM52 or KM41, KM42, KM51, KM53 are in gate-dividing state, and frequency converter is ready, and when above-mentioned condition satisfied, KM41 or KM51 closed a floodgate;
2) KM42 or KM52 combined floodgate logic, the long-range reclosing command that sends of man-machine interface (5), KM42, KM43, KM51, KM52 or KM52, KM53, KM41, KM51 are in gate-dividing state, and frequency converter is ready, and when above-mentioned condition satisfied, KM42 or KM52 closed a floodgate;
3) KM43 or KM53 combined floodgate logic, the long-range reclosing command that sends of man-machine interface (5), KM42, KM41, KM43 or KM52, KM51, KM53 are in gate-dividing state, KM42 or KM52) the separating brake time-delay is after 1 second; Perhaps send frequently requirement of cut when frequency converter failure, and KM41, KM42, KM43 or KM51, KM52, KM53 be in gate-dividing state, KM42 or the time-delay of KM52 separating brake are after 1 second; When above-mentioned condition satisfies respectively, KM43 or KM53) automatic closing;
4) conversion logic, A pump or B pump are in running status, when frequency converter breaks down, change power frequency over to and allow, and KM43 or KM53 close a floodgate; When A pump or B pump motor break down, the KM51 that closes, KM52 or KM41, KM4), automatically change the operation of B pump or A pump frequency conversion over to; When frequency converter and A pump or B failure of pump, KM53 or KM43 close a floodgate, and change B pump or A pump motor power frequency operation over to; Complete when the frequency converter maintenance, automatically change this side converting operation over to.
4. the control system of a high voltage converter " one drag two ", comprise distributed monitoring control system and high voltage converter cabinet (6), it is characterized in that: in distributed monitoring control system, be provided with man-machine interface (5) and Logic control module, the control input end of Logic control module connects the remote control signal output (5-1) of man-machine interface (5), the feedback input end of Logic control module connects the feedback signal output of high voltage converter cabinet (6), the control signal output of Logic control module connects the control signal input of high voltage converter cabinet (6), and the warning of Logic control module and state information output connect the signal input part of man-machine interface (5); Man-machine interface by distributed monitoring control system is carried out remote switching/trip operation to the contactor of high voltage converter, consists of distributed monitoring control system to the control loop of high voltage converter; The microcomputer protecting device that is installed in the high voltage converter cabinet detects high voltage converter electric loop fault rear drive switch trip; the alarm signal of mechanical breakdown in the frequency-charger cabinet is fed back to the Logic control module of distributed monitoring control system by the electrical measurement signal that is installed on the instrument transformer acquisition in the frequency-charger cabinet, consist of distributed monitoring control system to the monitoring circuit of high voltage converter.
5. the control system of a kind of high voltage converter according to claim 4 " one drag two " is characterized in that: Logic control module by input processing logical block (1), fault judges and processing logic unit (2), state processing logical block (3) and output order logical block (4) formation; Three inputs of input processing logical block (1) connect respectively the remote control commands output (5-1) of man-machine interface (5), mechanical breakdown feedback signal output (6-1) and the electrical measurement signal output (6-3) of high voltage converter cabinet (6); The signal input part of state processing logical block (3) connects the on off state feedback output end (6-2) of high voltage converter cabinet (6), one of its output connect that fault is judged and the input of processing logic unit (2) two, output two connect one of input of man-machine interfaces (5); Fault is judged and one of the input of processing logic unit (2) connect input processing logical block (1) output two, input three connect output order logical blocks (4) output two, he fault is judged and one of the output of processing logic unit (2) connect output order logical block (4) input two, output two connect man-machine interfaces (5) input two; One of output of input processing logical block (1) connects the control signal input of high voltage converter cabinet (6) by output order logical block (4).
6. it is characterized in that: in Logic control module, be provided with combined floodgate loop control logic and conversion logic control loop according to claim 4 or the control system of 5 described a kind of high voltage converters " one drag two ".
7. it is characterized in that according to claim 4 or the control system of 5 described a kind of high voltage converters " one drag two ": describedly be provided with the combined floodgate loop control logic and the conversion logic control loop is formed by connecting by isolating switch KM41, KM51, KM42, KM52, KM43, KM53; KM43 is connected across between water pump A and the 6KV A, and KM53 is connected across between water pump B and the 6KV B; KM41 connects with QS41 by high voltage converter and KM42 with after QS42 connects, and is in parallel with KM43; KM51 connects with QS51 by high voltage converter and KM52 with after QS52 connects, and is in parallel with KM53.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065323A (en) * | 2014-07-10 | 2014-09-24 | 深圳市英威腾电气股份有限公司 | High-voltage frequency converters and control system and method thereof |
| CN104722604A (en) * | 2013-12-18 | 2015-06-24 | 西南铝业（集团）有限责任公司 | Rolling reduction regulation device of roller straightening machine |
| CN105429038A (en) * | 2015-11-30 | 2016-03-23 | 株洲南车机电科技有限公司 | High-voltage variable frequency one-to-two manual bypass cabinet |
| CN109164744A (en) * | 2018-10-09 | 2019-01-08 | 华北电力大学（保定） | A kind of digital output modul plug-in unit of high-voltage frequency converter |
| CN112436759A (en) * | 2020-11-23 | 2021-03-02 | 顿汉布什(中国)工业有限公司 | Double-starting device of centrifugal water chilling unit and control method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063850A1 (en) * | 1981-04-28 | 1982-11-03 | Administratie- en Automatiseringscentrum Vulcaan B.V. | Device for controlling the synchronism of two motors |
| CN201392993Y (en) * | 2008-12-31 | 2010-01-27 | 广东省电力设计研究院 | DCS control module for nuclear power engineering transformer |
| CN201570856U (en) * | 2009-11-05 | 2010-09-01 | 北京中矿华飞科技有限公司 | Intelligent monitoring unit applied to high-voltage frequency inverter |
| CN203350708U (en) * | 2013-08-02 | 2013-12-18 | 中国能源建设集团广东省电力设计研究院 | High-voltage frequency converter "one-driving-two" control system |
-
2013
- 2013-08-02 CN CN201310335587.7A patent/CN103368495B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063850A1 (en) * | 1981-04-28 | 1982-11-03 | Administratie- en Automatiseringscentrum Vulcaan B.V. | Device for controlling the synchronism of two motors |
| CN201392993Y (en) * | 2008-12-31 | 2010-01-27 | 广东省电力设计研究院 | DCS control module for nuclear power engineering transformer |
| CN201570856U (en) * | 2009-11-05 | 2010-09-01 | 北京中矿华飞科技有限公司 | Intelligent monitoring unit applied to high-voltage frequency inverter |
| CN203350708U (en) * | 2013-08-02 | 2013-12-18 | 中国能源建设集团广东省电力设计研究院 | High-voltage frequency converter "one-driving-two" control system |
Non-Patent Citations (2)
| Title |
|---|
| 雷达: "火电厂高压电机变频控制改造", 《中国优秀硕士学位论文全文数据库》 * |
| 雷达: "火电厂高压电机变频控制改造", 《中国优秀硕士学位论文全文数据库》, 15 December 2010 (2010-12-15), pages 16 - 19 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722604A (en) * | 2013-12-18 | 2015-06-24 | 西南铝业（集团）有限责任公司 | Rolling reduction regulation device of roller straightening machine |
| CN104065323A (en) * | 2014-07-10 | 2014-09-24 | 深圳市英威腾电气股份有限公司 | High-voltage frequency converters and control system and method thereof |
| CN105429038A (en) * | 2015-11-30 | 2016-03-23 | 株洲南车机电科技有限公司 | High-voltage variable frequency one-to-two manual bypass cabinet |
| CN109164744A (en) * | 2018-10-09 | 2019-01-08 | 华北电力大学（保定） | A kind of digital output modul plug-in unit of high-voltage frequency converter |
| CN112436759A (en) * | 2020-11-23 | 2021-03-02 | 顿汉布什(中国)工业有限公司 | Double-starting device of centrifugal water chilling unit and control method thereof |
| CN114019872A (en) * | 2021-11-05 | 2022-02-08 | 中冶赛迪电气技术有限公司 | Circuit breaker opening and closing time sequence and fault judgment logic control system thereof |
| CN114019872B (en) * | 2021-11-05 | 2023-11-14 | 中冶赛迪电气技术有限公司 | Circuit breaker opening and closing time sequence and fault judgment logic control system thereof |
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