CN104218675A - Real-time online monitoring system for power distribution networks - Google Patents
Real-time online monitoring system for power distribution networks Download PDFInfo
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- CN104218675A CN104218675A CN201410421053.0A CN201410421053A CN104218675A CN 104218675 A CN104218675 A CN 104218675A CN 201410421053 A CN201410421053 A CN 201410421053A CN 104218675 A CN104218675 A CN 104218675A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The invention belongs to the field of intelligent equipment for power systems, and particularly relates to a real-time online monitoring system for power distribution networks. The real-time online monitoring system comprises a CPU (central processing unit), an insulation monitoring module, a temperature acquisition module, an analog acquisition module, a switch input and output module and a communication unit. Data can be acquired by the insulation monitoring module, the temperature acquisition module, the analog acquisition module and the switch input and output module, and received data are classified according to priority levels by the CPU and are sequentially rated by the aid of high-grade tags, middle-grade tags and low-grade tags; the high-grade data, the middle-grade data and the low-grade data are distributed to a GPRS (general packet radio service) remote wireless module, a ZigBee-based local wireless module and a USB (universal serial bus) storage module via the communication unit to be classified and transmitted. The real-time online monitoring system has the advantages that the real-time online monitoring system is provided with a communication module with a combination of double wireless communication systems and USB communication, accordingly, problems of data jamming and high communication expenses can be solved, large quantities of data of the power distribution networks can be provided for operating personnel, and devices can effectively adapt to actual engineering conditions.
Description
Technical field
Patent of the present invention belongs to Power System Intelligent apparatus field, relates in particular to a kind of distribution network real time on-line monitoring system for key elements such as transformer, capacitor, on-pole switchs in distribution network.
Background technology
Along with China's expanding economy, user's power consumption is increasing, the power construction develop rapidly of China.In power distribution network, because load complexity, Connection Mode are various, the problems such as distribution system fault is many, accident is many, interruption duration is long are caused.Along with socioeconomic development, the ability that user bears power failure more and more a little less than, power supply quality, reliability have been had to higher requirement.Improve distribution facility, improve distribution automation level and become the task of top priority.Adopting Intelligent power distribution terminal is the important channel of improving distribution network automated level.
Intelligent power distribution terminal refers to employing intelligent electronic device, and the nodal information (voltage, electric current, power, the position of the switch etc.) to power distribution network is monitored collection, and by the communication collecting the automatics to far-end main website.The signal gathering is mainly through signal condition steps such as pressure-limit current-limit processing, filtering, sampling maintenance, AD conversions, and the signal of typing passes to communicator after terminal judges screening.The transmission of information mainly contains wired and wireless two kinds of modes.Wherein wire transmission is higher to the having relatively high expectations of transmission channel, cost.
The equipment manufacturing cost costliness of at present external import, and the Intelligent power distribution terminal development level of China is lower, the reliability of device is poor, the infrastructure of power distribution network is required very high, function singleness and all do not consider the status monitoring problem to equipment in distribution network, cannot meet the electric power system actual demand of China.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of distribution network real time on-line monitoring system, be intended to solve current Intelligent power distribution terminal function simple and crude, infrastructure is required to too high, communication mode is single causes that transfer of data is blocked up, the drawback of condition monitoring function not.
Technical scheme of the present invention is achieved in that a kind of distribution network real time on-line monitoring system, and this system comprises:
CPU；
Insulating monitoring module, by apparatus local discharge is monitored, and the data of monitoring are reached in CPU, the peak value of each partial discharge pulse that CPU gathers insulating monitoring module, the initial time of recording impulse rising edge, by the comparison between each pulse, obtain partial discharge development trend, and contrast the fingerprint of various partial discharges and each discharge regime, thus the whether dangerous and dangerous degree of judgment device insulation;
Temperature collect module, gathers the live signal of distribution network and is passed in CPU;
Analogue collection module, is passed to the electric current of collection, voltage in CPU;
Switching value input/output module, the switching value of collection shape switching value and output, carries out switching value signal to enter data buffer after photoelectricity isolation, inputs to CPU;
CPU by the data of acceptance according to priority level be divided into abnormal failure information, all data of the interior collection that sets interval and all data of terminal storage, and be demarcated as successively senior, intermediate, rudimentary label;
Communication unit, is connected with CPU, for data are transmitted, comprise based on GPRS far wireless module, based on ZigBee local wireless module and USB memory module, wherein GPRS far wireless module accept the information of the advancements tab in CPU and transmit; ZigBee local wireless module, can in the time that making an inspection tour circuit, operation maintenance personnel use, operations staff is through near intelligent terminal, start Zigbee local wireless module in terminal and accept the information of the intermediate label in CPU and transmit, by USB memory module, data and individual notebook are carried out to the transmission of rudimentary label data.
Further, abnormal failure information comprises distribution network failure magnitude of voltage, fault current value, abnormal temperature value, abnormal local discharge signal.
Compared with prior art, beneficial effect is technical solution of the present invention: the present invention has increased insulating monitoring and temperature monitoring module, for the repair based on condition of component of system provides Data support; The communication module that adopts two wireless communication systems to combine with usb communication, when solving data obstruction with the high problem of communication cost, can, for operations staff provides a large amount of power distribution network data, make device adapt to better Practical Project situation again.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the far interface circuit schematic diagram of wireless module and LPC2292 of GPRS;
Fig. 3 is the interface circuit schematic diagram of ZigBee local wireless module and LPC2292;
Fig. 4 is the interface circuit schematic diagram of USB memory module and LPC2292.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, patent of the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain patent of the present invention, is not intended to limit the present invention patent.
As shown in Figure 1, a kind of distribution network real time on-line monitoring system, this system comprises:
CPU；
Insulating monitoring module, by apparatus local discharge is monitored, and the data of monitoring are reached in CPU, the peak value of each partial discharge pulse that CPU gathers insulating monitoring module, the initial time of recording impulse rising edge, by the comparison between each pulse, obtain partial discharge development trend, and contrast the fingerprint of various partial discharges and each discharge regime, thus the whether dangerous and dangerous degree of judgment device insulation;
Temperature collect module, gathers the live signal of distribution network and is passed in CPU;
Analogue collection module, is passed to the electric current of collection, voltage in CPU;
Switching value input/output module, the switching value of collection shape switching value and output, carries out switching value signal to enter data buffer after photoelectricity isolation, inputs to CPU;
CPU by the data of acceptance according to priority level be divided into abnormal failure information, all data of the interior collection that sets interval and all data of terminal storage, and being demarcated as successively senior, intermediate, rudimentary label, abnormal failure information comprises distribution network failure magnitude of voltage, fault current value, abnormal temperature value, abnormal local discharge signal.；
Communication unit, is connected with CPU, for data are transmitted, comprise based on GPRS far wireless module, based on ZigBee local wireless module and USB memory module, wherein GPRS far wireless module accept the information of the advancements tab in CPU and transmit; ZigBee local wireless module, can in the time that making an inspection tour circuit, operation maintenance personnel use, operations staff is through near intelligent terminal, start and accept the information of the intermediate label in CPU and transmit with Zigbee local wireless module in terminal, by USB memory module, data and individual notebook are carried out to the transmission of rudimentary label data.
The processing of the collection of CPU control signal, signal in the present invention, as output of the storage of the amplitude of calculating voltage signal, signal, signal etc.The LPC2292 model C PU taking ARM7 as core that selects PHILIPS Co. to produce in the present invention, has taken into account the factor such as resource and cost in processing speed, extended capability, sheet.
Insulating monitoring module is by apparatus local discharge situation is monitored, thereby apparatus insulated state is assessed, and in the time that serious problems appear in insulation, can send alarm signal.Insulating monitoring module can equipment by probe local discharge signal.The insulation discharge electric weight of high-tension apparatus is very little; normally millivolt magnitude; this just requires monitoring probe to have higher resolution, and in order to prevent high-tension apparatus issuable various overvoltage damage monitoring probes in service, overvoltage protecting device has been added in monitoring probe inside simultaneously.In addition, monitoring probe also will carry out early stage to discharge signal to be processed, and filters receive frequency range (0.1MHz-100MHz) ripple in addition, and the signal obtaining divides two-way to walk, one road direct detection output, detection output is first carried out again through High frequency amplification in another road.
CPU is by the collection partial discharge information gathering, the peak value of each partial discharge pulse, the initial time of recording impulse rising edge.By the comparison between each pulse, obtain partial discharge development trend, and contrast the fingerprint of various partial discharges and each discharge regime, thus the whether dangerous and dangerous degree of judgment device insulation, for operations staff provides the decision-making foundation that whether needs interruption maintenance.
The advantages such as the WZCT-03 platinum resistance temperature sensor that temperature collect module of the present invention adopts, has structure little, and the scope of application is wide, good reliability, thermal response time are short.Temperature sensor is connected with CPU's.
Analogue collection module, the analog quantity of collection need to be passed in CPU as electric current, voltage after preposition pressure-limit current-limit processing, RC low-pass filtering.
Switching value input/output module, switching value comprises the switching value of shape switching value and output, and shape switching value comprises the state of on-pole switch, the operate condition of circuit breaker automatic circuit, and the switching value of output comprises tripping operation and combined floodgate, alarm signal.Switching value signal carries out entering data buffer after photoelectricity isolation, inputs to CPU.
Communication unit, is connected with CPU, for data are transmitted, comprise based on GPRS far wireless module, based on ZigBee local wireless module and USB memory module, wherein wireless module transmission simple information far; ZigBee local wireless module, can in the time that making an inspection tour circuit, operation maintenance personnel use, operations staff is through near intelligent terminal, start with the hand-held mobile receiving terminal (hand-held mobile receiving terminal is not within the scope of this patent) that in terminal, Zigbee local wireless module is associated, the data of now storing in terminal are wirelessly transmitted to by Zigbee on tour personnel's intelligent meter data recording instrument; By USB memory module, data are carried out to exchanging of data with individual notebook, be used for the intelligent terminal mounting points of special concern to carry out data extraction, when use, tour personnel utilize data wire that data are transferred to individual notebook from intelligent terminal.
Above three kinds of communication modes complement one another, wherein the GPRS process priority that far wireless module moves is not the highest, only for the transmission of the critical datas such as fault message, the larger discharge signal of harm, can greatly reduce real-time Data Transmission flow, solve well transfer of data congestion problems, thereby significantly improve the transmission real-time of critical data, save campus network simultaneously; The data volume of Zigbee local wireless module transmission is between GPRS far between wireless module and USB memory module, the data of collection be the Data Collection moment period the last period interior (can adjust by program) terminal all Monitoring Data; USB memory module can be transferred to all Monitoring Data of storing on intelligent terminal on individual notebook, is specially adapted to the situation that needs a large amount of Monitoring Data to analyze distribution running status.
Communication unit of the present invention can solve the restriction of conventional wireless transmitted data amount well, can greatly improve Monitoring Data amount, solves well the problem of power distribution system data deficiency.
In the present embodiment, CPU adopts LPC2292, GPRS far wireless module and CPU interface circuit as shown in Figure 2, the pin R2IN of chip SP3232E is sent in the GPRS read command that far wireless module adopts chip MC55 to send, be converted to after Transistor-Transistor Logic level, send and received by P0.9 (RxD0) pin of LPC2292 through pin R1OUT.In addition, LPC2292 is delivered to sensor signal the pin T2IN of SP3232E through pin P0.83 (TxD0), be converted to after RS-232C level, deliver to MC55 by T2OUT pin and receive, realized so far being connected between wireless module and CPU of GPRS.
ZigBee local wireless module is connected as shown in Figure 3 with the circuit of LPC2292.Because the operating voltage of the radio frequency chip CC2530 of ZigBee module and the CPULPC2292 taking ARM7 as core is all 3.3V, so the UART0 of LPC2292 is direct and radio frequency chip CC2530 carries out exchanges data, be that P0.2 (RxD) pin of radio frequency chip CC2530 and P0.0 (TxD0) pin of CPULPC2292 are connected, and the P0.3 of radio frequency chip CC2530 (TxD) pin is connected with P0.1 (RxD0) pin of CPULPC2292.
The interface circuit of USB memory module and LPC2292 as shown in Figure 4.That USB memory module is used is the USB main control chip ISP1161BM that PHILIPS company produces, and it is the USB HC (Host Controller: main controller) of a compatible USB2.0 version specification.Its hardware capability feature: meet general string bus 2.0 specifications; Support (12Mbit/s) and two kinds of data patterns of low speed (1.5Mbit/s) at full speed; Two downlink ports can operate two USB device simultaneously; Technical grade working temperature-40 degree is to+85 degree.
Main control chip ISP1161 has 2 down going port, and each down going port has independently over-current detection input pin and mains switch control output pin.Main control chip ISP1161 also provides and wake input pin and hook state output pin up simultaneously, makes Power supply management more flexible.The down going port of main control chip ISP1161 can be connected with USB device and the usb hub with up going port.Therefore, main control chip ISP1161 is applicable to being used in embedded system and the portable set with usb host function, and its appearance makes system have higher flexibility.
Main control chip ISP1161 is connected as shown in the table with the pin of LPC2292.
| ISP1161 | Function | LPC2292 |
| A0～A1 (59～60 pin) | ISP1161 address bus | P0.0～P0.1 |
| WR (23 pin) | ISP1161 writes and enables | P0.2 |
| RD (22 pin) | ISP1161 reads to enable | P0.4 |
| RESET (32 pin) | ISP1161 reseting input signal | P0.5 |
| H_INT (29 pin), D_INT (30 pin) | ISP1161 interrupting input signal | P0.6～P0.7 |
| D_WAKEUP (37 pin) | ISP1161 wakes input signal up | P0.11 |
| H_SUSPEND (40 pin), D_SUSPEND (36 pin) | ISP1161 hangs up input signal | P0.12～P0.13 |
| D0～D15 (63,64,2～7,9～14,16,17 pin) | ISP1161 data/address bus | P0.14～P0.29 |
| CS (21 pin) | ISP1161 chip select line | P0.30 |
The foregoing is only the preferred embodiment of patent of the present invention; not in order to limit patent of the present invention; any amendment of doing within all spirit in patent of the present invention and principle, be equal to and replace and improvement etc., within all should being included in the protection range of patent of the present invention.
Claims (3)
1. a distribution network real time on-line monitoring system, is characterized in that, this system comprises:
CPU；
Insulating monitoring module, by apparatus local discharge is monitored, and the data of monitoring are reached in CPU, the peak value of each partial discharge pulse that CPU gathers insulating monitoring module, the initial time of recording impulse rising edge, by the comparison between each pulse, obtain partial discharge development trend, and contrast the fingerprint of various partial discharges and each discharge regime, thus the whether dangerous and dangerous degree of judgment device insulation;
Temperature collect module, gathers the live signal of distribution network and is passed in CPU;
Analogue collection module, is passed to the electric current of collection, voltage in CPU;
Switching value input/output module, the switching value of collection shape switching value and output, carries out switching value signal to enter data buffer after photoelectricity isolation, inputs to CPU;
CPU by the data of acceptance according to priority level be divided into abnormal failure information, all data of the interior collection that sets interval and all data of terminal storage, and be demarcated as successively senior, intermediate, rudimentary label;
Communication unit, is connected with CPU, for data are transmitted, comprise based on GPRS far wireless module, based on ZigBee local wireless module and USB memory module, wherein GPRS far wireless module accept the information of the advancements tab in CPU and transmit; ZigBee local wireless module, can in the time that making an inspection tour circuit, operation maintenance personnel use, operations staff is through near intelligent terminal, start Zigbee local wireless module in terminal and accept the information of the intermediate label in CPU and transmit, by USB memory module, data and individual notebook are carried out to the transmission of rudimentary label data.
2. according to distribution network real time on-line monitoring system claimed in claim 1, it is characterized in that, abnormal failure information comprises distribution network failure magnitude of voltage, fault current value, abnormal temperature value, abnormal local discharge signal.
3. according to distribution network real time on-line monitoring system claimed in claim 1, it is characterized in that, described CPU adopts LPC2292 cake core.
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| CN105953842A (en) * | 2016-07-01 | 2016-09-21 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharge and temperature monitoring device |
| CN106019105A (en) * | 2016-07-01 | 2016-10-12 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharging and temperature monitoring device |
| CN108344930A (en) * | 2018-01-31 | 2018-07-31 | 国家电网公司 | A kind of monitoring device and method of ring main unit temperature and shelf depreciation |
| CN109217477A (en) * | 2018-11-05 | 2019-01-15 | 广东电网有限责任公司 | A kind of distribution terminal control device |
| CN110048507A (en) * | 2019-03-29 | 2019-07-23 | 国网山东省电力公司邹城市供电公司 | A kind of automatic detecting method and system of electrical power distribution automatization system |
| CN112242747A (en) * | 2020-11-04 | 2021-01-19 | 安徽皖宏电气股份有限公司 | Data processing method of intelligent power distribution acquisition system |
| CN112444693A (en) * | 2020-11-04 | 2021-03-05 | 安徽皖宏电气股份有限公司 | Intelligent power distribution acquisition terminal fault management system |
| CN112929262A (en) * | 2019-12-06 | 2021-06-08 | 国网辽宁省电力有限公司锦州供电公司 | Distribution line data classification transmission method |
| CN113238535A (en) * | 2021-06-03 | 2021-08-10 | 中国核动力研究设计院 | Fault diagnosis method and system for nuclear safety level DCS analog input module |
| CN114844017A (en) * | 2021-05-12 | 2022-08-02 | 国网江苏省电力有限公司南通供电分公司 | Method for shortening average emergency response time of distribution network line tripping accident |
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| CN106019105A (en) * | 2016-07-01 | 2016-10-12 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharging and temperature monitoring device |
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| CN108344930A (en) * | 2018-01-31 | 2018-07-31 | 国家电网公司 | A kind of monitoring device and method of ring main unit temperature and shelf depreciation |
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| CN112929262B (en) * | 2019-12-06 | 2022-04-19 | 国网辽宁省电力有限公司锦州供电公司 | Distribution line data classification transmission method |
| CN112242747A (en) * | 2020-11-04 | 2021-01-19 | 安徽皖宏电气股份有限公司 | Data processing method of intelligent power distribution acquisition system |
| CN112444693A (en) * | 2020-11-04 | 2021-03-05 | 安徽皖宏电气股份有限公司 | Intelligent power distribution acquisition terminal fault management system |
| CN114844017A (en) * | 2021-05-12 | 2022-08-02 | 国网江苏省电力有限公司南通供电分公司 | Method for shortening average emergency response time of distribution network line tripping accident |
| CN114844017B (en) * | 2021-05-12 | 2023-06-20 | 国网江苏省电力有限公司南通供电分公司 | Method for shortening average emergency response time of tripping accident of distribution network line |
| CN113238535A (en) * | 2021-06-03 | 2021-08-10 | 中国核动力研究设计院 | Fault diagnosis method and system for nuclear safety level DCS analog input module |
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