CN102928716A - Intelligent power quality monitoring system - Google Patents
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- CN102928716A CN102928716A CN2012104379588A CN201210437958A CN102928716A CN 102928716 A CN102928716 A CN 102928716A CN 2012104379588 A CN2012104379588 A CN 2012104379588A CN 201210437958 A CN201210437958 A CN 201210437958A CN 102928716 A CN102928716 A CN 102928716A
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Abstract
The invention belongs to the field of intelligent monitoring devices and particularly relates to an intelligent power quality monitoring system. The intelligent power quality monitoring system comprises a data collecting module, a synchronous sampling analog-to-digital (A/D) conversion module, a data processing module, a storage module, an alarming module, an integrated communication module and a human-machine interface module. The data collecting module, the A/D conversion module, the data processing module and the integrated communication module are sequentially connected. The data processing module is further connected with the storage module and the alarming module and used for collecting power grid parameters, lightning current parameters and power distribution cabinet switch parameters and outputting the power grid parameters, the lightning current parameters and the power distribution cabinet switch parameters to the data processing module through the A/D conversion module. The data processing module delivers processed information to the communication module, and the processed information is output and displayed on the human-machine interface module. The intelligent power quality monitoring system monitors and analyzes the power parameters of a power grid, the lightning parameters and the switch parameters in real time, detects and analyzes the power quality precisely, measures power quality levels of the power grid, is favorable for analyzing and judging reasons causing various power quality problems, and provides a basis for improving the power quality.
Description
Technical field
The invention belongs to intelligent monitoring device field, relate in particular to a kind of intelligent power mass monitoring system.
Background technology
Widespread use and development along with Power Electronic Technique, increased a large amount of nonlinear loads in the electric power system, such as static converter, industrial ac-dc conversion device from low pressure low capacity household electrical appliance to the high pressure melting pot has application, because static converter is with on-off mode work, can cause line voltage, the current waveform distorted, cause the harmonic pollution of electrical network, impact, wavy load is such as electric arc furnaces, heavy (merchant) mill, electric locomotives etc. are in service not only can to produce a large amount of higher hamonic waves, and so that voltage fluctuation, flickering, tri-phase unbalance factor is on the rise, these adverse effects to electrical network not only can cause the security of electricity supply and use equipment itself to reduce, and can seriously undermine and disturb the economical operation of electrical network, cause the public hazards to electrical network, on the other hand, bank, precise electronic device manufacturing industry, electric locomotive, computer network and service supervisory system etc. are the places that the quality of power supply is had relatively high expectations, and high-accuracy technology and equipment increases day by day to the demand of high-quality electric energy.
The real-time dynamic monitoring of the electrical network quality of power supply is prerequisite and the basis of power quality harnessed synthetically.At present, the electric energy quality monitoring real-time is not strong, and monitoring means falls behind, and causes data age poor, can't in time understand the quality of power supply level of each electric pressure of each department, also can't in time take corresponding measure to improve the quality of power supply.
Determine the origin cause of formation that causes the quality of power supply low, workload is large, needs expensive manpower and materials go to collect data, also will carry out statistical study to the data of collecting on the other hand.Efficient is low, from finding that power quality problem to dealing with problems, often needs long time.The data sharing scarce capacity, the interchange of lacking experience between the personnel has restricted the progress of electric energy quality monitoring.
At present, improve the real-time of monitoring means, raising electric energy quality monitoring system, the intelligent power mass monitoring system that development has stronger data analysis capabilities is significant.
Summary of the invention
Technical purpose of the present invention is to solve the problems of the prior art, a kind of real-time for electric energy quality monitoring, accuracy is provided, and has the intelligent power mass monitoring system of stronger data analysis capabilities.
To achieve these goals, the technical solution adopted in the present invention is: the intelligent power mass monitoring system is characterized in that: comprise data acquisition module, synchronized sampling A/D modular converter, data processing module, memory module, alarm module, integrated communicaton module, human-computer interface module; Described data acquisition module, A/D modular converter, data processing module, integrated communicaton module connect successively; Described data processing module also is connected with memory module and alarm module; Described data collecting module collected electrical network parameter, and be transported to data processing module through the A/D modular converter, the information that data processing module will be processed is delivered to the integrated communicaton module, and the information output of processing also is shown in human-computer interface module.
Aforesaid intelligent power mass monitoring system, described electrical network parameter comprise electrical quantity, switching value parameter, lightning current parameter.
Aforesaid intelligent power mass monitoring system, described electrical quantity comprise voltage, electric current, active power, reactive power, applied power, power factor, active electrical degree, idle electric degree, mains frequency, harmonic wave effective value, harmonic voltage containing rate, harmonic voltage, harmonic current, harmonic power, a harmonic voltage, a harmonic current, voltage deviation, imbalance of three-phase voltage degree, current unbalance factor and transient overvoltage.
Aforesaid intelligent power mass monitoring system, described integrated communicaton module are used for remote parameter setting, Real-Time Monitoring, event inquiry and Wave data to be downloaded, the integrated communicaton module comprise to the time module and communication interface.
Aforesaid intelligent power mass monitoring system, described communication interface are RS485/RS232, Ethernet interface or CAN bus.
The present invention is by comprising that data acquisition module, synchronized sampling A/D modular converter, data processing module, memory module, alarm module, integrated communicaton module, human-computer interface module consist of electric energy quality monitoring system, Real-Time Monitoring is also analyzed the electrical quantity of electrical network, the quality of power supply is made accurate determination and analysis, measure the quality of power supply level of electrical network, be conducive to analyze and judge the reason that causes various power quality problems, for the improvement of the quality of power supply provides foundation.
Description of drawings
Fig. 1 is structural representation of the present invention;
Embodiment
For technical scheme, technical characterictic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Referring to Fig. 1, the intelligent power mass monitoring system is characterized in that: comprise data acquisition module, synchronized sampling A/D modular converter, data processing module, memory module, alarm module, integrated communicaton module, human-computer interface module; Data acquisition module, synchronized sampling A/D modular converter, data processing module, memory module, alarm module, integrated communicaton module, human-computer interface module consist of a hardware system; Described data acquisition module, A/D modular converter, data processing module, integrated communicaton module connect successively; Described data processing module also is connected with memory module and alarm module; Described data collecting module collected electrical network parameter, and be transported to data processing module through the A/D modular converter, the information that data processing module will be processed is delivered to the integrated communicaton module, and the information output of processing also is shown in human-computer interface module.Electrical network parameter comprises electrical quantity, switching value parameter and lightning current parameter.Electrical quantity comprises voltage, electric current; Active power, reactive power, applied power, multi-period active power, power factor; Active electrical degree, idle electric degree; Mains frequency; 2～31 subharmonic effective values, 2～31 subharmonic voltage containing ratios, resultant distortion rate; Harmonic voltage, harmonic current, harmonic power; Between harmonic voltage, a harmonic current; Voltage deviation, imbalance of three-phase voltage degree, current unbalance factor; Transient overvoltage, voltage fluctuation and flicker (long-term flickering, short-term flickering, IEC flickering); Voltage swells, voltage dip, short time voltage are interrupted; Quality of power supply record ripple (beyond target waveform recording).The switching value parameter comprises switch open and-shut mode in the electrical network, the position of the switch, switch motion number of times, switch motion time.
The method of phase three-wire three or three-phase and four-line is adopted in data acquisition, the measurement parameter scope is embodied in: 1. three-phase voltage: reference voltage 3 * 100VAC, 3 * 220/380VAC, 3 * 57.7/100V, measurement range 0.5～1.2Un, limiting voltage 2 Un, input impedance＞4k Ω (150V mutual inductor);＞16k Ω (380V mutual inductor), 0.2 grade of precision; 2. three-phase current: reference electric current 1(2) A, 1.5(6) A, 5(6) A, measurement range 50mA～6A, power consumption＜0.05VA(single channel rated current), 0.2 grade of precision.The calculating parameter precision is as follows: the power calculation precision: 0.2 grade of active power, 0.5 grade of reactive power, 0.5 grade of applied power, 0.5 grade of power factor; Fundamental phase computational accuracy:＜0.5 degree; Frequency computation part precision: measurement range 45～55Hz, precision 0.01Hz; Harmonic wave/harmonic wave precision a: GB/T 14549 A levels, 0.5 grade of 2～31 subharmonic, IEC 61000-4-30 category-A equipment requirement; Degree of unbalancedness precision: 0.2 grade of Voltage unbalance degree, 1 grade of current unbalance factor; Voltage fluctuation and flickering precision: 5 grades.The switching value input: 2 road light are every (being used for switch changed position record ripple); Switching value output: 2 tunnel relays (being used for the output of fault and affair alarm).
Digitizing technique comprises 32 Floating-point DSP technology, 16 high-speed ADC technology; Multiloop electrical isolation, independent synchronized sampling computing; Wave data meets record wave device data layout (adopting general COMTRADE form); Event-driven/triggering record ripple (indexes suddenly changed, switch changed position, manual triggers).
The integrated communicaton module adopts communication to realize remote networking (RS485, RS232, Ethernet); Realize remote parameter setting, Real-Time Monitoring, event inquiry, Wave data download based on technology of embedded Web; To the time mode, comprise network to the time, the GPS message to the time, the IRIG-B code to the time.The integrated communicaton module comprise to the time module and communication interface.Communication interface: 1 road RS485/RS232 (communication protocol: 103 stipulations), 1 road Fast Ethernet mouth (TCP/IP 103 stipulations), 1 road RS485/CAN bus (intra-node communication, agreement is made by oneself).
Data processing module and memory module can realize that the user arranges the history data store time, realize transient event record/record ripple, comprise voltage swells, rapid drawdown and interrupt in short-term record overall process event voltage and current Wave data; Can carry out the power quality index data statistics; Data processing module is connected with alarm module, and control is reported to the police and exported; Realize power index analysis and record; Realize analysis and the record of harmonic wave and a harmonic wave.
Human-computer interface module comprises key frame and query interface, key frame can show time figure of change distribution one system of electrical network, the running status of each switch cubicle in the electrical network, main electric parameter and on off state, two kinds of assay surfaces of real-time curve and history curve can show current real-time voltage, electric current.System has stored data to all can check its historical trend, makes things convenient for the engineering staff that the distribution network of monitoring is carried out data analysis.The electric energy statement form of standard also can meet according to the user's request design statement form of its needs, and system can add up automatically.Various types of real time execution forms, history report, alarm logging form etc. can be automatically generated, all data values with the print system record can be inquired about.The fault alarm interface is the corresponding warning message of record automatically, and the time of generation, the user can inquire about as required.
Above demonstration and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. the intelligent power mass monitoring system is characterized in that: comprise data acquisition module, synchronized sampling A/D modular converter, data processing module, memory module, alarm module, integrated communicaton module, human-computer interface module; Described data acquisition module, A/D modular converter, data processing module, integrated communicaton module connect successively; Described data processing module also is connected with memory module and alarm module; Described data collecting module collected electrical network parameter, lightning current parameter and power distribution cabinet switch amount parameter, and be transported to data processing module through the A/D modular converter, the information that data processing module will be processed is delivered to the integrated communicaton module, and the information output of processing also is shown in human-computer interface module.
2. intelligent power mass monitoring system according to claim 1, it is characterized in that: described electrical network parameter comprises electrical quantity, switching value parameter, lightning current parameter.
3. intelligent power mass monitoring system according to claim 1, it is characterized in that: also comprise alarm module, described alarm module is connected with data processing module.
4. intelligent power mass monitoring system according to claim 2, it is characterized in that: described electrical quantity comprises voltage, electric current, active power, reactive power, applied power, power factor, active electrical degree, idle electric degree, mains frequency, harmonic wave effective value, harmonic voltage containing rate, harmonic voltage, harmonic current, harmonic power, a harmonic voltage, a harmonic current, voltage deviation, imbalance of three-phase voltage degree, current unbalance factor and transient overvoltage.
5. intelligent power mass monitoring system according to claim 1, it is characterized in that: described integrated communicaton module is used for remote parameter setting, Real-Time Monitoring, event inquiry and Wave data to be downloaded, the integrated communicaton module comprise to the time module and communication interface.
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| CN103336215A (en) * | 2013-07-24 | 2013-10-02 | 国家电网公司 | Method for carrying out online monitoring on data of electric energy quality |
| CN103439610A (en) * | 2013-08-30 | 2013-12-11 | 国家电网公司 | Electric power quality detecting collecting terminal |
| CN103869185A (en) * | 2014-02-25 | 2014-06-18 | 苏州美高立电气有限公司 | Multifunctional electric energy quality analyzer |
| CN103956827A (en) * | 2014-04-23 | 2014-07-30 | 国家电网公司 | Harmonic monitoring control system based on multi-source microgrid |
| CN104200323A (en) * | 2014-09-02 | 2014-12-10 | 中国海洋石油总公司 | Electric energy quality monitoring and management system |
| CN105699846A (en) * | 2016-03-10 | 2016-06-22 | 武汉理工大学 | Monitoring device for power quality pollution source of electric propulsion ship |
| CN106526387A (en) * | 2016-12-17 | 2017-03-22 | 鼎阳智电慧服科技股份有限公司 | Kingview and VB hybrid programming electric energy quality monitoring system and monitoring method thereof |
| CN108051664A (en) * | 2017-11-15 | 2018-05-18 | 全球能源互联网研究院有限公司 | A kind of equipment for monitoring power quality |
| CN109709413A (en) * | 2018-11-20 | 2019-05-03 | 云南电网有限责任公司大理供电局 | A kind of comprehensive integrated system of observing and controlling based on modular multi-function platform |
| CN111585846A (en) * | 2020-05-19 | 2020-08-25 | 浙江巨磁智能技术有限公司 | Abnormity detection processing system and method for power supply network |
| CN111665406A (en) * | 2020-06-10 | 2020-09-15 | 浙江华电器材检测研究所有限公司 | Charging station electric energy quality monitoring system |
| CN111693793A (en) * | 2019-03-12 | 2020-09-22 | 上海电机学院 | Distributed power generation electric energy quality on-line monitoring system |
| CN113311257A (en) * | 2021-04-28 | 2021-08-27 | 航粤智能电气股份有限公司 | Comprehensive monitoring device for electric equipment |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103269129B (en) * | 2013-05-30 | 2015-05-27 | 国家电网公司 | Electric energy monitoring data optimizing device and optimizing method thereof |
| CN103269129A (en) * | 2013-05-30 | 2013-08-28 | 国家电网公司 | Electric energy monitoring data optimizing device and optimizing method thereof |
| CN103336215A (en) * | 2013-07-24 | 2013-10-02 | 国家电网公司 | Method for carrying out online monitoring on data of electric energy quality |
| CN103439610A (en) * | 2013-08-30 | 2013-12-11 | 国家电网公司 | Electric power quality detecting collecting terminal |
| CN103869185A (en) * | 2014-02-25 | 2014-06-18 | 苏州美高立电气有限公司 | Multifunctional electric energy quality analyzer |
| CN103956827A (en) * | 2014-04-23 | 2014-07-30 | 国家电网公司 | Harmonic monitoring control system based on multi-source microgrid |
| CN104200323A (en) * | 2014-09-02 | 2014-12-10 | 中国海洋石油总公司 | Electric energy quality monitoring and management system |
| CN105699846A (en) * | 2016-03-10 | 2016-06-22 | 武汉理工大学 | Monitoring device for power quality pollution source of electric propulsion ship |
| CN106526387A (en) * | 2016-12-17 | 2017-03-22 | 鼎阳智电慧服科技股份有限公司 | Kingview and VB hybrid programming electric energy quality monitoring system and monitoring method thereof |
| CN108051664A (en) * | 2017-11-15 | 2018-05-18 | 全球能源互联网研究院有限公司 | A kind of equipment for monitoring power quality |
| CN109709413A (en) * | 2018-11-20 | 2019-05-03 | 云南电网有限责任公司大理供电局 | A kind of comprehensive integrated system of observing and controlling based on modular multi-function platform |
| CN111693793A (en) * | 2019-03-12 | 2020-09-22 | 上海电机学院 | Distributed power generation electric energy quality on-line monitoring system |
| CN111585846A (en) * | 2020-05-19 | 2020-08-25 | 浙江巨磁智能技术有限公司 | Abnormity detection processing system and method for power supply network |
| CN111665406A (en) * | 2020-06-10 | 2020-09-15 | 浙江华电器材检测研究所有限公司 | Charging station electric energy quality monitoring system |
| CN113311257A (en) * | 2021-04-28 | 2021-08-27 | 航粤智能电气股份有限公司 | Comprehensive monitoring device for electric equipment |
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Application publication date: 20130213 |