CN1945475A - Load managing and control system based on DSP technology and expert control system and its working method - Google Patents
Load managing and control system based on DSP technology and expert control system and its working method Download PDFInfo
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- CN1945475A CN1945475A CN 200610016349 CN200610016349A CN1945475A CN 1945475 A CN1945475 A CN 1945475A CN 200610016349 CN200610016349 CN 200610016349 CN 200610016349 A CN200610016349 A CN 200610016349A CN 1945475 A CN1945475 A CN 1945475A
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Abstract
A load management control system for the combination of DSP technology and expert control system, which character is the composition of processor modules, data collection modules, input-output interface modules, communication modules, power module and keyboard display module. the advantages of the invention are: (1) using the high-speed data calculating and high-precision data handing capability of DSP to conduct double-signal control on the action executing device of load control management, to improve the reliability and speediness, (2) the entire system has a good performance of adjusting, to enhance the stability of the electric network, lower the probability of incidents due to the malfunction or rejection of control device, (3) expert control system makes the control program more reasonable and accurate, which has self-learning function, (4) hardware circuit is simple, real-time control is highly precise, and application prospect is broad.
Description
(1) technical field:
The invention belongs to power system load management control technique field, load management control system and method for work thereof that particularly a kind of DSP technology combines with expert control system.
(2) background technology:
Power load management system is one and integrates multidisciplinary technology such as modern management, computer technology, electronic technology, control automatically, network technology, multiple functional integrity system such as the realization power marketing is monitored, manages, copied and accepted, data acquisition is connected with network.Its main task is to realize real-time switching load, accomplishes to ration the power supply and does not draw the road, and " controlling to the family " realizes peak load shifting; Simultaneously for realizing the scientific management of electricity consumption, installing terminal user's various electricity consumption data and ammeter data can be gathered and preserve in system every day, on the basis of the basic monitoring function of realization system, data are rationalized utilization, expand its electricity consumption integrated management function, really accomplish system's practicability, the modernization of the management of power use.At present, in order to adapt to fast-developing electric utility, make that electrical network can be continuous in, safe and reliable the user provides high-quality electric energy, digital load management control technology more and more is applied in the actual electric network, thereby has improved the electrical network various aspects of performance.These control technologys mostly adopt pre-set control strategy, realize by programmable digital circuit engineering and real time digital signal treatment technology (as the singlechip chip technology etc.).But this type of control technology exists the burst unscheduled event is lacked corresponding Control Countermeasure, also has shortcomings such as hardware circuit complexity, debug difficulties, poor anti jamming capability and bad adaptability in addition.Fast development along with power industry, the capacity and the scale of distribution system increase day by day, requirement to the load management control system also improves constantly, it requires the load management control system to make rational load Switching Strategy according to the difference of load level, the difference of user's request and difference of system running state or the like, reach data are transmitted and safe storage quickly and accurately, to adapt to fast-developing electric utility.Therefore, traditional load management control system has been difficult to satisfy the performance requirement of modern industry, thereby is necessary to invent a kind of novel control system, especially a kind of adaptable load management control system.
(3) summary of the invention
The objective of the invention is to invent load management control system and the method for work thereof that a kind of DSP technology combines with expert control system, in conjunction with DSP signal processor with high performance and expert control system, can overcome the shortcoming of above-mentioned traditional control system preferably, be a kind of fast speed, high precision, control system and method for work thereof that adaptive faculty is strong.
Technical scheme of the present invention: the load management control system that a kind of DSP technology combines with expert control system is characterized in that it comprises by processor module, data acquisition module, input/output interface module, communication module, power module and keyboard display module; The input end of said data acquisition module connects external voltage mutual inductor summation current transformer, and its output terminal connects the input end of central data treatment circuit; The input/output terminal of said input/output interface module connects the universaling I/O port of DSP respectively, and its output terminal is drawn through photoelectrical coupler by universaling I/O port, exit and electrical equipment; Said power module outlet connects processor module; The output terminal of processor module connects the input end of communication module and keyboard display module respectively.
Above-mentioned said data acquisition module is made up of voltage, electric current AC sampling front-end circuit and filtering, amplifying circuit; The AC sampling front-end circuit is voltage, the current signal gathered, and through being transformed to the small voltage amount behind the secondary voltage current transformer, the small voltage amount is through filtering circuit, behind the voltage amplifier circuit, and conversion A/D converter acceptable voltage range; Voltage becomes discrete value and deposits among the RAM of control system after over-sampling, A/D conversion; Filtering circuit adopts step low-pass active filter.
Above-mentioned said voltage, electric current AC sampling front-end circuit constitute the input saturation protection with D11, D12, D21, D22, constitute mutual inductor phase shift compensation and rc filter circuit with R24, R25, R26, R34, R35, R36, C11, C12, C16, C17; Said filtering, amplifying circuit constitute with R1, R2, R3, R4, R5, R6 and comparer.
Above-mentioned said processor module comprises: dsp chip, power management module, crystal oscillating circuit and data bus driving circuit; The software program of compiling is set various executive conditions control dsp chips the input signal of data bus driving circuits is carried out identification, handles and send relevant steering order; Power management module is responsible for providing electric energy; Crystal oscillating circuit provides clock signal to dsp chip; The data bus driving circuit mainly is responsible for data buffering and level conversion.
Above-mentioned said dsp chip comprises high capacity flash memory, a plurality of 32 bit timing devices, 2 task managers and SPI, SCI, CAN multiple interfaces, and 12 road PWM control waves are provided; Power management module is made of dual power supply device and peripheral resistance R 15, R16, C1, C2 electric capacity; Crystal oscillating circuit is made of the capacitor C 3 that clock signal is provided to dsp chip, C4 and crystal oscillator body U2.The data bus driving circuit is made of a slice bidirectional data buffer device; This circuit working process is: after the digital quantity that A/D is transformed gained receives DSP, to data compensate, behind the digital filtering, corresponding corresponding standard value is converted into per unit value, computing draws the action setting valve, and produces a three-phase and amount to 3 control signals.
Above-mentioned said communication and keyboard display module belong to the manually-operated module of this system; This type of keyboard often adopts determinant keyboard, works in interrupt mode, be used for realizing adjusting of various protection parameters, and the functions such as input of control signal; In order to show Chinese character and figure, can adopt liquid-crystal controller.
A kind of method of work of the load management control system based on DSP technology and expert control system is characterized in that it may further comprise the steps:
(1) data of the coming signature analysis of control procedure of loading according to online acquisition, the characterisitic parameter that obtains loading;
(2) characterisitic parameter and the knowledge base according to institute's analysis load compares, and with to its reasoning of carrying out tissue class, draws the match-type of wanting analysis load, and reasoning process adopts the algorithm of inexact reasoning; If coupling is unsuccessful, then searches in the knowledge base data again and mate; Then call the corresponding module of finding the solution as if the match is successful and carry out next step;
(3) select the load controlling schemes, and from dynamic data base, transfer parameter and the data that require when preload control, and corresponding different controlling schemes, call control corresponding rule, control algolithm and parameter update rule, after having found the solution the load control algolithm, corresponding dissimilar loads calls corresponding load control module;
(4) obtain real-time information from pretreater, carry out the load controlling schemes, control in real time.
Expert control system principle of work of the present invention: at first will collect a large amount of knowledge relevant with part throttle characteristics, so that type or characteristic in load management and when control according to load, find out Matching Algorithm or controlling schemes, and in service in reality, by the study mechanism storehouse of refreshing one's knowledge; The inference mechanism design forward reasoning model commonly used of system, its working routine is: the user deposits the information relevant with the problem of finding the solution in database, inference machine is according to these information, from knowledge base, select suitable knowledge, the information that must make new advances is also deposited in database with it, select knowledge for use according to current state again, so repeatedly, until giving separating of ging wrong.
The principle of work of the load management control system that the said DSP technology of this case combines with expert control system is: this system utilizes control module that electric weight such as the voltage in the circuit on power system, electric current are monitored.Signal shaping conversion process circuit is transmission line of electricity voltage transformer secondary side voltage and Current Transformer Secondary side current transformation than the low amplitude value alternating voltage, and being sent to after the processing with DSP is in the central data treatment circuit of core.The counter of setting DSP is the time counter of timing sampling, the data processing subroutine concentrates in the interrupt service subroutine of this time counter, and to give its interrupt priority level be system's superlative degree, can avoid data processing to be interrupted like this, thereby guarantee the real-time and the accuracy of sampled data by other interruptions.In data processing module, collect discrete electric current and voltage amount after, most important one the step be the instantaneous parameters of accurate Calculation electrical network.When the system that detects near critical excitation or overlond running, and when taking place to stablize hidden danger; When the system of detecting breaks down; Remove when the system failure, when recovering normal the operation; When electricity consumption lack of standardization being arranged among the user who manages or do not pay situation such as the electricity charge, the central data treatment circuit can be according to the knowledge base of expert system, find out and the algorithm of situation characteristic matching or the working value of control law calculating place control device occur, provide the control signal of controller, give real-time switching load accordingly, the disengagement failure circuit is made rational management game etc. to the associated user.According to different control strategies, after the regular hour postpones, judge system's charge value once more, send second control signal to controller, thus the action of control control device.In service in reality can also upgrade the knowledge base of expert system by study mechanism.
Superiority of the present invention and technique effect are: utilize the high performance digital signal process chip to realize the control of relay protection action, the reliability and the rapidity of load management action have been improved to a great extent, the control hysteresis that has overcome FPGA (Field Programmable Gate Array) control technology and common singlechip chip technical finesse speed limit and caused, the untimely defective of action, make The whole control system have good adjusting function and reliability, reduce the probability of the accidents such as stopping production that the misoperation because of control device causes, and then strengthened the stability of electrical network and the reliability of user side; Adopt expert control system, can introduce the fuzzy control theory, and traditional control law is improved more accurately, can provide the controlling schemes that has nothing in common with each other to the various different situations that occur at any time, and it also has the characteristics of self study, can in actual motion, constantly replenish perfect to knowledge base, and DSP is applied in the control system of load management, give full play to high-speed data computing power and the pinpoint accuracy data-handling capacity of DSP, action actuating unit to load management carries out dual signal control, its hardware circuit is simple, the precision of real time control height has wide technology application prospect.
(4) description of drawings:
Accompanying drawing 1 is the present invention's's related " based on the load management system and method for work thereof of DSP technology and expert control system " structural representation;
(wherein, Fig. 2-a is voltage, electric current alternating current sampling circuit for the circuit diagram of the data acquisition module among the present invention's related " based on the load management system and method for work thereof of DSP technology and expert control system " for accompanying drawing 2; Fig. 2-b is filtering, amplifying circuit);
Accompanying drawing 3 is the structural representation of processor module among the present invention's related " based on the load management system and method for work thereof of DSP technology and expert control system ";
Accompanying drawing 4 is the method for work process flow diagram among the present invention's related " based on the load management system and method for work thereof of DSP technology and expert control system ".
(5) embodiment:
Embodiment: a kind of load management system and method for work (see figure 1) thereof based on DSP technology and expert control system, it is characterized in that it is a central processing unit with the high performance DSP TMS320F2812 that Texas Instruments releases, total system is made up of processor module, data (analog quantity) acquisition module, input/output interface module, communication module, power module and keyboard display module six parts.The input end of said data (analog quantity) acquisition module connects external voltage mutual inductor summation current transformer, and its output terminal connects the input end of central data treatment circuit; Saidly leave interface module is connected to DSP after photoelectric coupler isolation universaling I/O port, switching value is drawn through photoelectrical coupler by universaling I/O port, exit and electrical equipment; Said power module outlet connects processor module, is dsp chip TMS320F2812 power supply; The output terminal of central processing module connects the input end of communication module and keyboard display module respectively.
Above-mentioned said data (analog quantity) acquisition module (see figure 2) is made up of voltage, electric current AC sampling front-end circuit and filtering, amplifying circuit; The AC sampling front-end circuit is voltage, the current signal gathered, and through being transformed to the small voltage amount behind the secondary voltage current transformer, the small voltage amount is through filtering circuit, behind the voltage amplifier circuit, and conversion A/D converter acceptable voltage range.Voltage becomes discrete value and deposits among the RAM of control system after over-sampling, A/D conversion.Filtering circuit adopts step low-pass active filter.
Above-mentioned said voltage, electric current AC sampling front-end circuit (are seen and Fig. 2-a) constitute the input saturation protection with D11, D12, D21, D22 are constituted mutual inductor phase shift compensation and rc filter circuit with R24, R25, R26, R34, R35, R36, C11, C12, C16, C17; Said filtering, amplifying circuit (see that Fig. 2-b) usefulness R1, R2, R3, R4, R5, R6 and comparer LF353 constitute.
Above-mentioned said central data treatment circuit comprises dsp chip TMS320F2812, power management module, crystal oscillating circuit and data bus driving circuit; The software program of compiling is set various executive conditions control dsp chip TMS320F2812 the input signal of data bus driving circuits is carried out identification, handles and send relevant steering order; Power management module is responsible for providing electric energy; Crystal oscillating circuit provides clock signal to dsp chip; The data bus driving circuit mainly is responsible for data buffering and level conversion (see figure 3).
Above-mentioned said dsp chip (see figure 3) comprises high capacity flash memory, a plurality of 32 bit timing devices, 2 task managers and SPI, SCI, CAN multiple interfaces, and 12 road PWM control waves are provided; Power management module is made of dual power supply device TPS73HD301 and peripheral resistance R 15, R16, C1, C2 electric capacity; Crystal oscillating circuit is made of the capacitor C 3 that clock signal is provided to dsp chip, C4 and crystal oscillator body U2.The data bus driving circuit is made of a slice bidirectional data buffer device 74LVC16245; This circuit working process is: after the digital quantity that A/D is transformed gained receives DSP, to data compensate, behind the digital filtering, corresponding corresponding standard value is converted into per unit value, and computing draws the action setting valve, and produces (three-phase amounts to 3 a) control signal.
A kind of method of work (see figure 4) of the load management control system based on DSP technology and expert control system is characterized in that it may further comprise the steps:
(1) data of the coming signature analysis of control procedure of loading according to online acquisition, the characterisitic parameter that obtains loading;
(2) characterisitic parameter and the knowledge base according to institute's analysis load compares, and with to its reasoning of carrying out tissue class, draws the match-type of wanting analysis load, and reasoning process adopts the algorithm of inexact reasoning; If coupling is unsuccessful, then searches in the knowledge base data again and mate; Then call the corresponding module of finding the solution as if the match is successful and carry out next step;
(3) select the load controlling schemes, and from dynamic data base, transfer parameter and the data that require when preload control, and corresponding different controlling schemes, call control corresponding rule, control algolithm and parameter update rule, after having found the solution the load control algolithm, corresponding dissimilar loads calls corresponding load control module;
(4) obtain real-time information from pretreater, carry out the load controlling schemes, control in real time.
Each related in technique scheme operational module all adopts conventional element circuit.
Claims (7)
1, the load management control system that combines with expert control system of a kind of DSP technology is characterized in that it comprises processor module, data acquisition module, input/output interface module, communication module, power module and keyboard display module; The input end of said data acquisition module connects external voltage mutual inductor summation current transformer, and its output terminal connects the input end of central data treatment circuit; The input/output terminal of said input/output interface module connects the universaling I/O port of DSP respectively, and its output terminal is drawn through photoelectrical coupler by universaling I/O port, exit and electrical equipment; Said power module outlet connects processor module; The output terminal of processor module connects the input end of communication module and keyboard display module respectively.
2,, it is characterized in that said data acquisition module is made up of voltage, electric current AC sampling front-end circuit and filtering, amplifying circuit according to said a kind of load management system in the claim 1 based on DSP technology and expert control system; The AC sampling front-end circuit is voltage, the current signal gathered, and through being transformed to the small voltage amount behind the secondary voltage current transformer, the small voltage amount is through filtering circuit, behind the voltage amplifier circuit, and conversion A/D converter acceptable voltage range; Voltage becomes discrete value and deposits among the RAM of control system after over-sampling, A/D conversion; Filtering circuit adopts step low-pass active filter.
3, according to said a kind of load management system in the claim 2 based on DSP technology and expert control system, it is characterized in that said voltage, electric current AC sampling front-end circuit constitute the input saturation protection with D11, D12, D21, D22, constitute mutual inductor phase shift compensation and rc filter circuit with R24, R25, R26, R34, R35, R36, C11, C12, C16, C17; Said filtering, amplifying circuit constitute with R1, R2, R3, R4, R5, R6 and comparer.
4, according to said a kind of load management system in the claim 1, it is characterized in that said processor module comprises: dsp chip, power management module, crystal oscillating circuit and data bus driving circuit based on DSP technology and expert control system; The software program of compiling is set various executive conditions control dsp chips the input signal of data bus driving circuits is carried out identification, handles and send relevant steering order; Power management module is responsible for providing electric energy; Crystal oscillating circuit provides clock signal to dsp chip; The data bus driving circuit mainly is responsible for data buffering and level conversion.
5, according to said a kind of load management system in the claim 1 based on DSP technology and expert control system, it is characterized in that said dsp chip comprises high capacity flash memory, a plurality of 32 bit timing devices, 2 task managers and SPI, SCI, CAN multiple interfaces, provides 12 road PWM control waves; Power management module is made of dual power supply device and peripheral resistance R 15, R16, C1, C2 electric capacity; Crystal oscillating circuit is made of the capacitor C 3 that clock signal is provided to dsp chip, C4 and crystal oscillator body U2.The data bus driving circuit is made of a slice bidirectional data buffer device; This circuit working process is: after the digital quantity that A/D is transformed gained receives DSP, to data compensate, behind the digital filtering, corresponding corresponding standard value is converted into per unit value, computing draws the action setting valve, and produces a three-phase and amount to 3 control signals.
6,, it is characterized in that said communication and keyboard display module belong to the manually-operated module of this system according to said a kind of load management system in the claim 1 based on DSP technology and expert control system; This type of keyboard often adopts determinant keyboard, works in interrupt mode, be used for realizing adjusting of various protection parameters, and the functions such as input of control signal; In order to show Chinese character and figure, can adopt liquid-crystal controller.
7, a kind of method of work of the load management control system based on DSP technology and expert control system is characterized in that it may further comprise the steps:
(1) data of the coming signature analysis of control procedure of loading according to online acquisition, the characterisitic parameter that obtains loading;
(2) characterisitic parameter and the knowledge base according to institute's analysis load compares, and with to its reasoning of carrying out tissue class, draws the match-type of wanting analysis load, and reasoning process adopts the algorithm of inexact reasoning; If coupling is unsuccessful, then searches in the knowledge base data again and mate; Then call the corresponding module of finding the solution as if the match is successful and carry out next step;
(3) select the load controlling schemes, and from dynamic data base, transfer parameter and the data that require when preload control, and corresponding different controlling schemes, call control corresponding rule, control algolithm and parameter update rule, after having found the solution the load control algolithm, corresponding dissimilar loads calls corresponding load control module;
(4) obtain real-time information from pretreater, carry out the load controlling schemes, control in real time.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169626A (en) * | 2011-03-29 | 2011-08-31 | 辽宁省电力有限公司 | Communication control device for controllable terminal on power demand side and method thereof |
| CN102706502A (en) * | 2012-06-26 | 2012-10-03 | 吴江市金真缝纫机有限公司 | Tension detection system of silk yarn in textile machine |
| CN103997127A (en) * | 2014-06-10 | 2014-08-20 | 山东建筑大学 | Energy integrated management system and method for monitoring equipment of high-voltage power transmission line |
| CN107402051A (en) * | 2016-05-18 | 2017-11-28 | 云南师范大学 | A kind of flow registering instrument with wireless supervisory control function |
-
2006
- 2006-10-26 CN CN 200610016349 patent/CN1945475A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169626A (en) * | 2011-03-29 | 2011-08-31 | 辽宁省电力有限公司 | Communication control device for controllable terminal on power demand side and method thereof |
| CN102169626B (en) * | 2011-03-29 | 2013-01-02 | 东北大学 | Communication control device for controllable terminal on power demand side and method thereof |
| CN102706502A (en) * | 2012-06-26 | 2012-10-03 | 吴江市金真缝纫机有限公司 | Tension detection system of silk yarn in textile machine |
| CN103997127A (en) * | 2014-06-10 | 2014-08-20 | 山东建筑大学 | Energy integrated management system and method for monitoring equipment of high-voltage power transmission line |
| CN103997127B (en) * | 2014-06-10 | 2016-02-17 | 山东建筑大学 | A kind of Integrated Energy management system of high voltage transmission line Link Monitor Equipment and method |
| CN107402051A (en) * | 2016-05-18 | 2017-11-28 | 云南师范大学 | A kind of flow registering instrument with wireless supervisory control function |
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