CN2717084Y - Intelligent control protection device of high-voltage vacuum circuit breaker - Google Patents
Intelligent control protection device of high-voltage vacuum circuit breaker Download PDFInfo
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- CN2717084Y CN2717084Y CN 200420027318 CN200420027318U CN2717084Y CN 2717084 Y CN2717084 Y CN 2717084Y CN 200420027318 CN200420027318 CN 200420027318 CN 200420027318 U CN200420027318 U CN 200420027318U CN 2717084 Y CN2717084 Y CN 2717084Y
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Abstract
The utility model discloses a high-pressure vacuum circuit breaker's intelligent control protection device, characterized by: the CPU module is connected with the CPLD module, the CPLD module is connected with an analog quantity acquisition module and an input and output quantity module, the CPLD module is also connected with a liquid crystal keyboard interface module, the CPU module is connected with a communication module, the CPU module and the CPLD module are also connected with a data memory, and a power circuit is connected with the modules. The beneficial effects are as follows: the automatic detection switch has the functions of automatically detecting the position quantity of the switch and locking faults; three-stage protection and grounding protection are also provided; the protection action time delay is adjusted and adjusted on line; the signal processing uploading is the same as the existing domestic communication protocol; the volume is small and the installation is convenient; has good electromagnetic interference resistance.
Description
Technical field:
The utility model relates to for distribution technique, is a kind of control device of vacuum circuit-breaker, specifically, is a kind of intellectuality control protective device of high-pressure vacuum breaker.
Background technology:
Circuit breaker is the important electric elements in the distribution system, and its performance is most important to the safe and stable operation of electrical network, therefore improves the circuit breaker performance, and improve its intelligent level is the problem that people pay close attention to always.Traditional breaker protection function is to have utilized some physical effect, and the action by mechanical system realizes that volume is bigger, and effect is also undesirable.Influence whole supply line when preventing that power consumption equipment from breaking down, and occur damaging power consumption equipment when unusual, be necessary on the basis of conventional circuit breaker, progressively to develop more reliable and have the circuit breaker of more defencive functions at supply network.For example, the circuit breaker that has functions such as short-circuit protection, overcurrent and overtemperature protection, earth leakage protective, open-phase protection.
At present, developed the seriation intelligent breaker abroad.Its performance is better than traditional circuit breaker product greatly.3WN1 type Multifunctional breaker as the Siemens exploitation has three kinds of defencive functions and seven kinds of regulative modes.The Masterpact series frame-type circuit breaker of rated voltage 660V, the rated current 800-3200A of France MG company exploitation, its advantage is energy measurement electric current, control and measurement institute energy requirement, all protectors all are contactless.Eighties of last century the early 1990s General Electric Apparatus Co.(U.S.A.) has released the Power Breaker series breaker of plastic casing of band digitlization solid-state trip device, and it has advantages such as function modoularization, assembling unitization, the intellectuality of threading off, protection variation, annex generalization.China has obtained bigger progress in the product development aspect the intelligent low-voltage circuit breaker, has the product of a lot of maturations to emerge.Changshu Switch Factory was developed at that time state's inner capacities big (5000A) in 1999, the CW-15000 intelligent universal circuit breaker of short circuit breaking capacity higher (120kA), type approval test in national low-voltage electrical apparatus quality monitoring inspection center by all events, every performance index meet design requirement.The HS W1-3200 Series Circuit Breakers that the exploitation of the Zhijiang River, Hangzhou switchgear plant is made detects institute low-voltage electrical apparatus quality testing station at Chinese electric equipment and has carried out a complete set of model approval test, and has passed through the expert appraisal by Zhejiang Province State Scientific and Technological Commission tissue.Also have homemade DW-40 series intelligent universal circuit breaker, its technical performance and structure all reach the advanced level of external the nineties, and it meets the IEC-947.2 standard.Or the like.Yet aspect the research and development of high-voltage intelligent circuit breaker, China still is in the starting stage, has more theory and technology problem to study and to inquire into.Carry out the R﹠D work of the intellectuality control protective device of high-pressure vacuum breaker early, solve the related key technical of its design and manufacturing process, have crucial meaning improving the product combination property and the market competitiveness.
Summary of the invention:
The purpose of this utility model provides a kind of have automatic sense switch position quantity and failure locking function; Also have three section protection and add the ground connection protection; Operate time of protection time-delay on-line tuning is adjustable; It is identical with existing domestic communication protocol that signal processing is uploaded; Volume is little easy for installation; Intellectuality control protective device with high-pressure vacuum breaker of good anti-electromagnetic interference performance.
Technical solution of the present utility model is: a kind of intellectuality control protective device of high-pressure vacuum breaker; it is characterized in that: the CPU module is arranged; the CPU module is connected with the CPLD module; the CPLD module is connected to analogue collection module and opens into the amount of leaving module; the CPLD module also is connected to liquid crystal keyboard interface module; the CPU module is connected to communication module, and CPU module and CPLD module also are connected with data storage, and other has power circuit to be connected with above-mentioned each module.
The analog signals input circuit is arranged in the analogue collection module described in the utility model, and the analog signals input circuit is connected with the CPLD module through data acquisition module.The analog signals input circuit also is connected with the CPU module through the frequency measurement module.Comprise static data memory and non-volatile data memory in the data storage.
The beneficial effects of the utility model are: have automatic sense switch position quantity and failure locking function; Also have three section protection and add the ground connection protection; Operate time of protection time-delay on-line tuning is adjustable; It is identical with existing domestic communication protocol that signal processing is uploaded; Volume is little easy for installation; Has good anti-electromagnetic interference performance.
Below in conjunction with drawings and Examples the utility model is further described:
Description of drawings:
Fig. 1 is the theory diagram of the intellectuality control protective device of a kind of high-pressure vacuum breaker of the present utility model;
Fig. 2 is that the main program module flow chart in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model;
Fig. 3 is that the CPU module circuit diagram in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model;
Fig. 4 is that CPLD and the digital I module circuit diagram in the protective device controlled in the intellectuality of high-pressure vacuum breaker of the present utility model;
Fig. 5 is that the man-machine interface circuit diagram in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model;
Fig. 6 is that the keyboard interface circuit figure in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model;
Fig. 7 is that the LCD interface circuit diagram in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model;
Fig. 8 is that the memory extensive module circuit diagram in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model;
Fig. 9 is that the CAN communication module circuit diagram in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model;
Figure 10 is that the serial communication module circuit diagram in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model.
Embodiment:
Fig. 1 has described the principle of the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.CPU (TM320F2407A) module 1 is arranged in the drawings, CPU module 1 is connected with CPLD (EPM7128SLC84) module 2, the CPLD2 module is connected to analogue collection module and opens into the amount of leaving module 3, CPLD module 2 also is connected to liquid crystal keyboard interface module 4, CPU module 1 is connected to communication module 5, CPU module 1 and CPLD module 2 also are connected with data storage 6,7, and other has power circuit to be connected with above-mentioned each module.Analog signals input circuit 8 is arranged in the described analogue collection module, and analog signals input circuit 8 is connected with CPLD module 2 through data acquisition module 9.Analog signals input circuit 8 also is connected with CPU module 1 through frequency measurement module 10.Comprise static data memory 6 and non-volatile data memory 7 in the data storage.
Fig. 2 has described the main program module flow process in the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.Comprise: power on or reset routine module 21, initialize routine module 22, self-check program module 23, have or not fault judgement program module 24, data processor module 25, action determining program module 26, action or alarm decision program module 27, display routine module 28, communication program module 29, alert program module 30 etc.
Fig. 3 has described the CPU modular circuit in the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.Except that comprising CPU (TM320F2407A), also comprise components and parts such as integrated circuit JP1 (JTAG-DSP), resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R20, R23, R24, capacitor C 4, C17, C18, C19, C20, switch S 3 in the circuit.
Fig. 4 has described CPLD and the digital I modular circuit in the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.Comprise components and parts such as CPLD (EPM7128SLC84), integrated circuit JP2 (JTAG-CPLD), JP5 (ADCIN), JP6 (IOPE-PF), JP7 (IOPA-PB), JP10 (CPLD-NET), resistance R 18, R19, capacitor C C5, C6, switch S 2 in the circuit.
Fig. 5 has described the man-machine interface circuit in the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.Comprise in the circuit: components and parts such as integrated circuit U4 (LVC16245A), capacitor C 11.
Fig. 6 has described the keyboard interface circuit in the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.Comprise in the circuit: components and parts such as integrated circuit JP8 (KEYBORDPORT), resistance R 13, R14, R15, R16, R17, capacitor C 13.
Fig. 7 has described the LCD interface circuit in the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.Comprise in the circuit: components and parts such as integrated circuit JP9 (LCD PORT), rheostat VR1, capacitor C 14, C24.
Fig. 8 has described the memory extensive module circuit in the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.Comprise in the circuit: components and parts such as integrated circuit U1 (TPS7333), JP3 (CY7C1021), JP4 (CY7C1021), R22 (X25650), inductor L1, L2, L3, L4, resistance R 12, R21, capacitor C 1, C2, C3, C7, C8, C9, C10, C12, C15, C16, C21, C22, C25, switch S 1, diode D1.
Fig. 9 has described the CAN communication module circuit in the intellectuality control protective device of high-pressure vacuum breaker of the present utility model.Comprise in the circuit: integrated circuit J3 (82C250), photoelectrical coupler U8, U9, resistance R 3, R35, R36, R37, R26, capacitor C 29, components and parts such as C30, C31.
Figure 10 is that the serial communication modular circuit in the protective device is controlled in the intellectuality of high-pressure vacuum breaker of the present utility model.Comprise in the circuit: components and parts such as integrated circuit U5 (MAX232A), U6 (MAX485), photoelectrical coupler U11, U12, diode D2, D3, resistance R 47, R48, R52, R53, R60, R61, R63, R64, R68, R69, capacitor C 32, C33, C34, C35, C40, C41, C42, C43.
One, technology path of the present utility model:
1, real-time current detecting
Adopt the detection method of different current effective values, very big to the influence of the reliability of intelligent breaker and precision.Usually, think that distribution system is with sinusoidal current ' s circuit work, the processing method of the microprocessor offset of sinusoidal current sampling data in the intelligent breaker generally has two kinds: one, maximum (if sampled point is abundant, can think that maximum is a peak value) with sampled data in the one-period takes advantage of 0.707 to obtain effective value; Its two, obtain effective value with average on duty 1.11 of sampled data in the half period.But, along with development of science and technology, variously making electrical network that the variation that can not be ignored take place, thereby cause that power quality begins to degenerate, wave distortion, harmonic component increase with electric loading, distribution system no longer has been the pure sinusoid circuit.Therefore; if employing is tried to achieve effective value with mean value or is tried to achieve the data processing method of effective value with maximum; under the non-sine situation that wave distortion, harmonic component increase; error is big; this greatly reduces the display precision of intelligent breaker and protection operation precision, even causes the misoperation of circuit breaker.For this reason, in the design of this intelligent breaker, adopt electric current root-mean-square value (RMS) sampling.
2, three section protection adds the realization of ground connection protection
When transship, during short circuit, the electric current in the three-phase line changes greatly, is easy to detect, therefore the protection for them is easy to realization.With respect to three section protection, the many of difficulty are wanted in the realization of ground protection.In the 35KV system, under the normal condition, system's three-phase voltage symmetrical balance, three-phase ground capacitance equates that non-zero-sequence current passes through in the zero sequence current mutual inductor of each lead line.When a certain circuit generation single phase ground fault, zero sequential potential transformer open delta winding output residual voltage, the former side of the zero sequence current mutual inductor of each circuit of system all has zero-sequence current to pass through, and pair side exports the secondary zero-sequence current.The 35KV high-tension line is permitted voltage as start-up criterion with zero, starts ground protection when zero is permitted voltage greater than setting value, then carries out following judgement.For isolated neutral system (not being with arc suppression coil compensation), judge the ground connection phase according to the reactive power method of three-phase zero-sequence current I0.For through arc suppression coil earthing system, because the compensating action of arc suppression coil, the zero-sequence current phase place of the zero-sequence current of ground path and non-fault line is basic identical, leading residual voltage is about 90 °, also not necessarily the zero-sequence current than non-fault line is big for amplitude, therefore can not judge ground path according to direction and the size of three-phase zero-sequence current I0, so change direction and size judgement ground path into according to 5 order harmonic components of zero-sequence current.
3, the selection of CPU
The diverse in function that native system will be realized, the programmed algorithm complexity, thereby operand is very big.For example in asking the process of root-mean-square value, the computing of extracting square root, the extraction of square root computing can't directly realize, must realize by Newton iteration method or other numerical value processing methods, but will increase operand greatly.In the implementation procedure of single-phase grounding selecting algorithm, use discrete Fourier transform (DFT) for another example, algorithm also is very complicated.Realize complicated algorithm and numerical operation, improve real-time operation speed, must select high-speed CPU.At present, the The application of single-chip computer technology is mature on the whole, and selectable single-chip microcomputer model is many, and low price, therefore a lot of intelligent breakers all are to select single-chip microcomputer as the control core.But the arithmetic speed of single-chip microcomputer is relatively slow, is difficult to finish the demand of native system.This intelligent breaker is designed and developed and is adopted the TMS320F240 family chip as kernel control chip, the instruction cycle of this family chip is 12.5ns, can select widely, and code is general between each model, therefore can satisfy the needs of intelligent breaker function expansion in the future and product up-gradation.
4, the position of the switch of circuit breaker amount detects and failure locking
Because circuit breaker was failure to actuate in most of running times, during this period, the task of this unit is that the operating state of circuit breaker is constantly monitored, and simultaneously it also should write down circuit breaker and cut-offs situation at every turn, so that carry out the maintenance of accident analysis and circuit breaker afterwards.Simultaneously, the ablation situation that also can represent contact of breaker by the size that circuit breaker is accumulated drop-out current.
The concrete detection and the realization of failure locking should be decided according to the concrete property of vacuum circuit-breaker.
5, the Signal Processing and the realization of uploading
The serial communication mode of standard is adopted in communication, is convenient to the communication between native system and the host computer.
The structure of data communication network: be any principal and subordinate's web frame (field bus type) of exhaling by the host computer master to multiple spot.
Communication modes: broadcasting response mode, half-duplex type.
Hardware interface circuit type: RS-485 interface circuit.(having transient protection or isolated form)
Communication line: UTP twisted-pair feeder, 8 cores (4 pairs), five class connections.(when the industrial environment of serious interference or circuit and power line together lay, can select shielding conductor STP for use)
Host computer: central processing unit should be more than 586.If host computer is in the industrial environment of serious interference, then should select the industrial computer type for use.
The communication function that can realize comprises: circuit breaker every protection parameter of now is reported and submitted to host computer in the communication substation; Running parameter, fault parameter are reported and submitted to host computer in the communication substation, reach the purpose of host computer to the remote measurement of electric power network system; The remote regulating parameter of communication substation reception host computer changes the protective feature parameter in the circuit breaker; The control signal of communication substation reception host computer realizes the distant control function of electric power network computer control system.
6, the processing of electromagnetic compatibility problem
Electromagnetic compatibility becomes important key element day by day in the power equipment design and in using, and product must be obtained the quality certificate of electromagnetic compatibility earlier before coming into the market.The interference of electronic apparatus has electrical Interference from various aspects, various factorss such as variation of ambient temperature and air pressure, vibration, time, and wherein electrical Interference is the principal element in all kinds of interference.Disturb by various circuits and invade microprocessor systems, also can form invade microsystem from the space, supply line is the main path that various surge voltages are invaded in the electrical network.The intelligent breaker work under bad environment, disturbing factor is many, when it usually is operated in high-voltage great-current, the interference of invading with the form of field is its principal element, they can form interference by modes such as electrostatic inductions in microprocessor system, cause the circuit breaker misoperation, consequent economic loss may be immeasurable.Disturb in order to resist these, can go to set about from aspects such as the electromagnetic coupled between circuit, electromagnetic shielding, wire distribution distance, component installation location and use EMC filters.In software, can further reduce the influence of electromagnetic interference by adding various filtering algorithms to system.
The modularized design of this device hardware using, to improve its stability and maintainable, the main modular of hardware comprises: the CPU module, the CPLD module, analogue collection module is opened into the amount of leaving module, liquid crystal keyboard interface module, communication module etc.
After device powered on or resets, system at first carried out initialization, comprises the initialization of each chip and register; Then each device is carried out self check, can report to the police if find failed equipment, if all normally then enter major cycle;
In major cycle, carry out following work:
(1) calls the effective value that data processing module calculates each preface fundametal compoment;
(2) result of calculation according to previous step takes appropriate measures in the action judge module;
(3) refresh the demonstration of LCD and each indicator light;
(4) communication part.
Two, the concrete function of each module and implementation method are as follows:
1, initialization module
Mainly finish the control register to system stack pointer, timer, working method and each input/output port of communication baud rate, processor and CPLD, the working method of LCD and the initialization of parts such as display buffer, each work register of communication port.
2, selftest module
Mainly finish the self check to processor, clock circuit, switching value imput output circuit, analog quantity input and analog to digital conversion circuit, setting value etc., this is the important measures of the normal operation of assurance device.Adopted dynamic self-checking here, be about to selftest module and be placed in the major cycle, guaranteed that device can carry out selftest module one time in each circulation.If note abnormalities, will on LCD, demonstrate the corresponding information of defective device automatically, and report to the police or the locking outlet according to different situations, during with the supporting use of comprehensive automation of electric power system, also abnormal information can be sent to host computer.
3, data processing module
Its effect is by the data that collect are changed; obtain the numerical value of protection philosophy and needed each the road analog quantity of criterion; leave these sampled values the ram region of appointment in by certain form, so that the calculating of main program module to each monitoring, protection operating criterion to be provided.
4, action judge module
Whether its function is the system frequency that the result that obtains according to data processing module and frequency measurement module obtain, judge according to the principle and the setting value of various protections move or report to the police with decision.In this device, the action judge module is made up of transient current fast tripping protection, specified time overcurrent protection, thermal overload inverse-time overcurrent protection and single-line to ground fault protection.
The action judge module is the core of this algorithm, introduces it below and realizes thinking.The action judge module is formed by starting link and fault verification link.
1) starts link
In order to improve the stability of control system, prevent malfunction, startup flag bit KQD is set in system.During normal condition, KQD-0, the locking of outlet actuating relay, protection can malfunction.When having only the link of startup KQD=1, just enter the fault verification module.
2) fault verification
1. current quick
When two kinds of values that algorithm calculated are all greater than fast tripping protection action tuning current value in the start-up criterion, the fast tripping protection action.If phase 64 points of sampling weekly, then be the intrinsic operate time+breaker time of 1.25ms+ relay operate time, satisfies the requirement of protection rapidity.
2. short circuit short time delay and long delay protection (or inverse time protection)
After starting link action one-period, adopt the all-wave fourier algorithm to calculate current effective value, can satisfy the needs of monitoring and protection simultaneously.Fourier algorithm supposes that no longer voltage, the magnitude of current imported are the pure sinusoid amount, but supposes that they are made up of DC component, fundamental frequency and letter frequency component.
3. one-phase ground protection
Therefore in the ideal case, isolated neutral system be because capacitance to earth much larger than line impedance, when analyzing single-phase grounding fault, can be ignored line impedance, and thinks that the total system residual voltage equates.Therefore, if circuit is very short, then distributed capacitance is very little, and capacitance current is also very little.
The 35KV system generally adopts isolated neutral or through grounding through arc, so during single phase ground fault, zero-sequence current is very little.During fault, earth point metallic earthing and through the transition grounding through resistance, zero-sequence current also is very different.In addition, because when system normally moves, also can there be zero-sequence current in the difference of three-phase ground capacitance, and, because the inconsistency of threephase current transformer magnetic characteristic must also can be brought measure error.
Because the factor of zero-sequence current is a lot of when influencing single-line to ground fault, so single-phase earth fault line selection is a hang-up with the location always in the electric power system, till now also not well solution.
For isolated neutral system, this algorithm adopts fault phase fundamental wave zero sequence current power direction to be judged by circuit sensing bus; Through laughing at the arc coil grounding system, during owing to the generation single phase ground fault, fault phase fundamental wave zero sequence electric current can't be judged by fundamental wave zero sequence current power direction by the arc suppression coil overcompensation for neutral point.
5, display module
Mainly constitute by LCD (LCD).When normal operation, LCD need show real-time time, the currency of each road analog quantity (comprising each phase voltage, electric current and system frequency etc.), the state of each way switch amount (mainly being circuit breaker), and needs periodic refreshing.Wherein time and analog quantity are represented with letter and number, and switching value is represented with figure, so LCD has adopted text and the synthetic working method of figure.
6, communication module
Have serial data communication and CAN communication network interface, can be directly and comprehensive automation of electric power system supporting, realize that setting value is read and revises in the real-time monitoring in a distant place and control, a distant place, functions such as stopping protection is thrown in a distant place.
7, interrupt service subroutine module
Mainly form by data acquisition module, keyboard processing module and zero passage detection module
1) data acquisition module.Consider the reliability and the complexity of interrupt nesting, the mode that data acquisition and conversion adopt inquiry to wait for realizes.In the timer interrupt service subroutine, log-on data collection and AD conversion.
2) keyboard processing module.Consider that the keyboard use was less when line protective devices normally moved, so keyboard response has adopted the mode of interrupting.When key was pressed, the external interrupt through CPLD triggers CPU entered the keyboard interrupt service subroutine.In interrupt service routine, finish the identification of key number and carry out function corresponding, mainly contain ejection, selection and the execution of menu; Moving of cursor; The plus-minus of setting value etc.
3) zero passage detection module.The basic task of this module is the moment of record analog quantity zero crossing, thereby obtains two time differences between the zero crossing, and further calculates the frequency of analog quantity or the phase difference between the two-way analog quantity thus.Zero passage detection is that the capture unit input port CAP by processor F240 interrupts carrying out, and its record zero passage process is constantly realized by hardware fully, need not the intervention of software and CPU.Can improve the speed of interrupt response like this, the precision that helps writing down can reduce taking CPU simultaneously.
Microprocessor is introduced circuit breaker; combine with microelectric technique, sensing technology, control mechanics of communication, power electronic technology etc.; can on same circuit breaker, realize the multiple operating characteristics of kinds of protect function on the one hand; circuit breaker is realized and the central control computer both-way communication; constitute intelligent monitoring, protection, information network system, make circuit breaker develop into intelligentized defencive function from basic defencive function.Intellectuality has been an important development direction of mesolow circuit breaker.
The intellectuality that develops into electric switch of microcomputer technology provides condition.Intelligentized electric switch not only can provide the various defencive functions of normal circuit breaker, in real time the various parameters in the display circuit (electric current, voltage, power, power factor etc.).The action parameter of various defencive functions also can show, sets and revise.Fault parameter during the protective circuit action can be stored in the nonvolatile storage so that query analysis.
1, microprocessor minimum system
This is the core of control unit, and minimum system comprises its reset circuit, the expanded circuit of crystal oscillating circuit and mass storage etc.
2, the measurement module of electric current and voltage amount
The measurement of electric current and voltage amount adopts voltage transformer and flirtatious six instrument transformers to finish respectively.
The voltage and current signal of sampling by the processing of modulate circuit, becomes DSP acceptable digital signal earlier then after the A/D conversion, send into the foundation of CPU as supply line's failure diagnosis at last.
3, the module of adjusting of protection parameter
This part passes through button or upper function realizes overload long delay, short circuit short time delay, short circuit is instantaneous and the electric current of ground connection time-delay fault and the on-line tuning of time to chopping.
4, display module
When supply line is in normal operating conditions, show quantity of states such as maximal phase voltage, maximum phase current, power factor; When abnormal conditions such as overvoltage, overcurrent occurring when supply line, show caution sign, and show the fault amount, but the user makes intelligent controller get back to normal operating conditions according to the real work needs breaking circuit breaker or the processing that lightens the load.
5, communication module
According to general serial communication stipulations; the RS-485 interface circuit of design standard can carry out exchanges data with host computer, and can accept the order of host computer; by the host computer operation that takes remote measurement, also can adjust the device parameter of circuit breaker and protection setting current and time by host computer.When supply line occurs unusually, control unit can be according to the requirement of main frame with the electric current and voltage amount of circuit breaker with cut-off record and be sent to host computer and preserve and print.
6, input/output interface
Input/output interface adopts optocoupler to finish the isolated variable and the transmission of input signal, the control signal that CPU sends and the control signal of controlled device are complementary, and the switching signal that control unit is gathered from the outside is transformed to CPU acceptable signal simultaneously.
After hardware system detected required various real-time status amounts, CPU realized corresponding various defencive function according to various error protection principles with software.
Claims (4)
1, a kind of intellectuality of high-pressure vacuum breaker control protective device; it is characterized in that: the CPU module is arranged; the CPU module is connected with the CPLD module; the CPLD module is connected to analogue collection module and opens into the amount of leaving module; the CPLD module also is connected to liquid crystal keyboard interface module; the CPU module is connected to communication module, and CPU module and CPLD module also are connected with data storage, and other has power circuit to be connected with above-mentioned each module.
2, the intellectuality of high-pressure vacuum breaker according to claim 1 control protective device, it is characterized in that: the analog signals input circuit is arranged in the analogue collection module, and the analog signals input circuit is connected with the CPLD module through data acquisition module.
3, the intellectuality of high-pressure vacuum breaker according to claim 2 control protective device, it is characterized in that: the analog signals input circuit also is connected with the CPU module through the frequency measurement module.
4, according to the intellectuality control protective device of claim 1,2 or 3 described high-pressure vacuum breakers, it is characterized in that: comprise static data memory and non-volatile data memory in the data storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027318 CN2717084Y (en) | 2004-05-20 | 2004-05-20 | Intelligent control protection device of high-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027318 CN2717084Y (en) | 2004-05-20 | 2004-05-20 | Intelligent control protection device of high-voltage vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717084Y true CN2717084Y (en) | 2005-08-10 |
Family
ID=34870916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420027318 Expired - Lifetime CN2717084Y (en) | 2004-05-20 | 2004-05-20 | Intelligent control protection device of high-voltage vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717084Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145682B (en) * | 2006-09-14 | 2010-06-09 | 株式会社东芝 | Switch controller and switch device |
| CN103051062A (en) * | 2012-12-27 | 2013-04-17 | 国电南瑞科技股份有限公司 | Intelligent phase selection system and method for multifunctional measuring and control device |
| CN103354967A (en) * | 2010-10-28 | 2013-10-16 | Abb技术有限公司 | A protection relay for sensitive earth fault protection |
| CN104155889A (en) * | 2014-08-29 | 2014-11-19 | 北京华力创通科技股份有限公司 | High-precision on-off controller |
| CN104426121A (en) * | 2013-08-19 | 2015-03-18 | 施耐德电气工业公司 | Electronic releaser and protection current setting method |
| CN105051997A (en) * | 2012-12-13 | 2015-11-11 | 能量分配系统（控股）有限公司 | Power distribution system and method, and circuit breaker for use therein |
| CN104578400B (en) * | 2013-10-24 | 2017-12-12 | 陈锦清 | A kind of distributor breaker intelligent protection device and method |
| CN107589369A (en) * | 2017-09-04 | 2018-01-16 | 安徽科盟电子科技有限公司 | A kind of intelligent monitoring protection device for preventing breaker from malfunctioning |
| CN110376958A (en) * | 2019-07-09 | 2019-10-25 | 江苏师范大学 | A kind of control method of mine substation monitoring and management based on PLC |
-
2004
- 2004-05-20 CN CN 200420027318 patent/CN2717084Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145682B (en) * | 2006-09-14 | 2010-06-09 | 株式会社东芝 | Switch controller and switch device |
| CN103354967A (en) * | 2010-10-28 | 2013-10-16 | Abb技术有限公司 | A protection relay for sensitive earth fault protection |
| CN103354967B (en) * | 2010-10-28 | 2016-05-11 | Abb技术有限公司 | The protective relay of sensitive earth-fault protection |
| CN105051997A (en) * | 2012-12-13 | 2015-11-11 | 能量分配系统（控股）有限公司 | Power distribution system and method, and circuit breaker for use therein |
| CN103051062A (en) * | 2012-12-27 | 2013-04-17 | 国电南瑞科技股份有限公司 | Intelligent phase selection system and method for multifunctional measuring and control device |
| CN104426121A (en) * | 2013-08-19 | 2015-03-18 | 施耐德电气工业公司 | Electronic releaser and protection current setting method |
| CN104578400B (en) * | 2013-10-24 | 2017-12-12 | 陈锦清 | A kind of distributor breaker intelligent protection device and method |
| CN104155889A (en) * | 2014-08-29 | 2014-11-19 | 北京华力创通科技股份有限公司 | High-precision on-off controller |
| CN107589369A (en) * | 2017-09-04 | 2018-01-16 | 安徽科盟电子科技有限公司 | A kind of intelligent monitoring protection device for preventing breaker from malfunctioning |
| CN110376958A (en) * | 2019-07-09 | 2019-10-25 | 江苏师范大学 | A kind of control method of mine substation monitoring and management based on PLC |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140520 Granted publication date: 20050810 |