CN201789341U - Monitoring system of intelligent micro-grid - Google Patents

Monitoring system of intelligent micro-grid Download PDF

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Publication number
CN201789341U
CN201789341U CN201020278347XU CN201020278347U CN201789341U CN 201789341 U CN201789341 U CN 201789341U CN 201020278347X U CN201020278347X U CN 201020278347XU CN 201020278347 U CN201020278347 U CN 201020278347U CN 201789341 U CN201789341 U CN 201789341U
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CN
China
Prior art keywords
control
electrical network
intelligence
little electrical
monitoring
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Expired - Lifetime
Application number
CN201020278347XU
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Chinese (zh)
Inventor
朱长林
郭炬
王罡
范国平
黄宇
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State Grid Corp of China SGCC
Original Assignee
Beijing Electric Power Corp
Beijing Huashang Sanyou New Energy Technology Co Ltd
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Priority to CN201020278347XU priority Critical patent/CN201789341U/en
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Anticipated expiration legal-status Critical
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems
    • Y04S20/242Home appliances

Abstract

The utility model discloses a monitoring system of an intelligent micro-grid, which solves the problem that the intelligent micro-grid in the prior art has insufficient stability and reliability in the process of operation, and comprises a control device, a monitoring device and an output device, wherein the control device is connected with a distributed generation set in the intelligent micro-grid and a load and is used for controlling the distributed generation set and the load according to the preset method, and the monitoring device is connected with the distributed generation set in the intelligent micro-grid, a commercial power loop and the load and is used for obtaining operation parameters of the distributed generation set, the commercial power loop and the load; and the output device is connected with the monitoring device and is used for displaying the operation data of the distributed generation set and the load.

Description

The supervisory control system of the little electrical network of a kind of intelligence
Technical field
The utility model relates to the power technology field, relates to the supervisory control system of the little electrical network of a kind of intelligence especially.
Background technology
Along with the development of the new-generation technology that comprises regenerative resources such as wind-powered electricity generation, solar energy, distributed generation system DGS (Distributed Generation System) day by day becomes a kind of effective way that satisfies the load growth demand, reduces environmental pollution, raising comprehensive utilization of energy efficient and power supply reliability.
For integrating the advantage of distributed power generation, weaken impact and the negative effect of distributed power generation to electrical network, give full play to benefit and the value of DGS, the best way is that micro power network is formed in the DG unit.
That is that all right is ripe for the technology of the microgrid system that present multiple distributed energy combination inserts, and the power supply of variety classes, capacity merges in same system, can bring many new problems.As: the stability of system and integrity problem, power quality problem and economy problems.When stability and reliability requirement various energy resources inserted, big disturbance or fault can not take place in system.Parameters such as the voltage of quality of power supply requirement microgrid system, frequency, harmonic wave can meet the requirements.Economy problems is utilized regenerative resource with requiring maximum effect, economizes on resources, and reduces and pollutes, and makes the user obtain maximum economy return simultaneously.
In realizing the utility model process, the inventor finds stability and the reliability deficiency of the little electrical network of intelligence of the prior art in running.
The utility model content
Main purpose of the present utility model provides the supervisory control system of the little electrical network of a kind of intelligence, to solve the stability of intelligent little electrical network in running and the problem of reliability deficiency in the prior art.
For addressing the above problem, the utility model provides following technical scheme:
The little electrical network of a kind of intelligence comprises: control device, be connected with distributed power generation device and load in the little electrical network of described intelligence, and be used for controlling described distributed power generation device and described load according to default mode; Monitoring device is connected with distributed power generation device, civil power loop and load in the little electrical network of described intelligence, is used to obtain the operational factor of described distributed power generation device, described civil power loop and described load; Output device is connected with described monitoring device, is used for showing by default project the service data of described distributed power generation device and described load.
Further, described control device comprises: switch control circuit is connected with the control end of the contactor in civil power loop; The generator connecting in parallel with system regulating system is connected with the control end of generator in the little electrical network of described intelligence, is used to control the frequency and/or the phase place of described generator; The solar energy control device is connected with the control end of device of solar generating in the little electrical network of described intelligence, is used to make described device of solar generating and described civil power to be incorporated into the power networks or off-the-line.
Further, described monitoring device comprises: first parts, be connected with generator in the little electrical network of described intelligence, and be used to monitor the operational factor of described generator; Second parts are connected with civil power loop in the little electrical network of described intelligence, are used to monitor the operational factor in described civil power loop; The 3rd parts are connected with device of solar generating in the little electrical network of described intelligence, are used to monitor the operational factor of described device of solar generating.
Further, described monitoring device also comprises the power quality analysis parts, is connected in data acquisition position default in the little electrical network of described intelligence.
Further, described monitoring device also comprises the electric energy metrical parts, is connected in electric energy metrical position default in the little electrical network of described intelligence.
Further, described output device also is connected with described power quality analysis parts, is used to receive and export the data that described power quality analysis parts are gathered.
Further, described output device also is connected with described electric energy metrical parts, is used to receive and export the energy data that described electric energy metrical parts metering obtains.
Further, comprise calculating unit in the described output device, be used for described energy data is carried out computing, generate statistical report form.
According to the technical solution of the utility model, by control device is connected with distributed power generation device and load in intelligent little electrical network; Monitoring device is connected with distributed power generation device, civil power loop and load in intelligent little electrical network; Output device is connected with monitoring device, can realize the control of distributed power generation device and described load and the operational factor of obtaining distributed power generation device, civil power loop and load, thereby help to improve stability and the reliability of intelligent little electrical network in running.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the structure of the intelligent little electrical network among the utility model embodiment;
Fig. 2 is the schematic diagram according to a kind of concrete structure of the microgrid control system of the utility model embodiment.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Fig. 1 is the schematic diagram according to the structure of the intelligent little electrical network among the utility model embodiment.As shown in Figure 1, the intelligent little electrical network in the present embodiment comprises the supervisory control system of intelligent little electrical network, and this supervisory control system mainly comprises control device, monitoring device and output device.Intelligence also comprises the distributed power generation device in little electrical network, in Fig. 1 signal as a whole, but can be a plurality of Blast Furnace Top Gas Recovery Turbine Unit (TRT) in practice, for example a plurality of generators, organize photovoltaic power generation apparatus etc. more.The little electrical network of intelligence is electrically connected with the city, and comprises load, as shown in Figure 1.Below the supervisory control system of the little electrical network of intelligence is described further.
In the supervisory control system of the little electrical network of intelligence, control device is connected with distributed power generation device and load in intelligent little electrical network, is used for controlling distributed power generation device and institute's load according to default mode; Monitoring device is connected with distributed power generation device, civil power loop and load in intelligent little electrical network, is used to obtain the operational factor of distributed power generation device, civil power loop and load; Output device is connected with monitoring device, is used for showing by default project the service data of distributed power generation device and load.
Control device specifically can comprise: switch control circuit is connected with the control end of the contactor in civil power loop; The generator connecting in parallel with system regulating system is connected with the control end of generator in the little electrical network of intelligence, is used to control the frequency and/or the phase place of generator; The solar energy control device is connected with the control end of device of solar generating in the little electrical network of intelligence, is used to make device of solar generating and civil power to be incorporated into the power networks or off-the-line.
Monitoring device specifically can comprise: first parts, be connected with generator in the little electrical network of intelligence, and be used to monitor the operational factor of generator; Second parts are connected with civil power loop in the little electrical network of intelligence, are used to monitor the operational factor in civil power loop; The 3rd parts are connected with device of solar generating in the little electrical network of intelligence, are used to monitor the operational factor of device of solar generating.
Monitoring device can also comprise the power quality analysis parts, is connected in data acquisition position default in intelligent little electrical network.Like this, output device can also be used to receive and export the data that the power quality analysis parts are gathered.
Monitoring device can also comprise the electric energy metrical parts, is connected in electric energy metrical position default in the little electrical network of described intelligence.Like this, output device also is used to receive and export the energy data that the metering of electric energy metrical parts obtains.And further, can comprise calculating unit in the output device, be used for calculating according to default account form according to energy data.
The microgrid control system mainly realizes monitoring, control and the regulating action to micro power network system, and the managing electrical power supply improves the service efficiency of green energy resource, thereby reaches the effect of energy-saving and emission-reduction.In realization, the microgrid control system can adopt the mode of Fig. 2, and Fig. 2 is the schematic diagram according to a kind of concrete structure of the microgrid control system of the utility model embodiment.
Powder source management mode under the microgrid control system is:
A, civil power and solar energy are simultaneously as power supply.Civil power in the system, solar grid-connected to the sub-district bussed supply, at this moment: solar energy adopts parallel network reverse to be connected with the sub-district bus; Solar poweredly have precedence over the commercial power supply load; When solar energy output during greater than load, system sells to civil power; According to the tariffs on electricity situation, system charges a battery by prioritization scheme.Wherein, prioritization scheme is finished by two-way inverter and control system.
B, civil power disappear, and storage battery and solar energy are power supply.When the civil power in the system suddenly disappears, system finishes the sub-district bus rapidly by the conversion of civil power to the two-way inversion of storage battery power supply, system changes into by storage battery and solar grid-connected power supply, at this moment: the power supply of sub-district bus is provided by storage battery and solar energy; When capacity of power less than when load, system's automatic deloading gets rid of less important load, guarantees important load; According to the storage battery situation, system is starter-generator under suitable situation; Behind the city power recovery, system recovers commercial power supply rapidly.
The energy monitor system can be used for power quality analysis.Be specially: monitoring continuous, on a large scale is provided, and image data is carried out the quality of power supply and fail-safe analysis; Follow IEC61000-4-30 and EN50160 standard, whether check meets the international standard of the quality of power supply, is convenient to consult fast quality of power supply situation with digital form or graphical display; Show harmonic spectrum figure, strange/even-order harmonic, THD, the K factor, peak factor, polar plot and preface component; The drafting duration reaches several seconds oscillogram, by the relation of oscillogram display voltage, electric current, analyzing failure cause; Satisfy the voltage tolerance curve of industrial standard, draw upper punch, sink, interrupt in short-term and other interference incident; To any one event, the target subevent is clicked arbitrary subevent and can be checked detailed information when showing a series of band.
The energy monitor system can support the application of broad range, and for example: the equipment reason or the program mal of quality of power supply incident takes place for diagnosis, analysis; Assess current quality of power supply situation and trend in advance; The identification equipment fault is determined the reliability of power distribution situation and operation of equipment; According to standard power quality index is set, and compares at different coverages, device or program; The power quality index threshold value is set, determines the influence that system change or device upgrade produce.
The energy monitor system when realizing data acquisition with accumulative total specifically can be: electric energy metrical and the metering of other parameter, as gas, heat, water, air pressure etc.; Provide the complete compatibility of all ION equipment series, the ACM equipment series before supporting.Can read the data in the table meter, control relay and numeral output realize long-range setting and edition upgrading; Have show with the third party to count, the interface of transducer, power equipments such as PLC, RTU, can realize fast and the direct communication of remote equipment by Modbus, RTU or Modbus Transmission Control Protocol, perhaps connect the digital quantity or the analog quantity input that output to ION or PowerLogic table meter of miscellaneous equipment.
The energy monitor system when realizing monitoring in real time specifically can be: can by any work station, check the main data of monitoring point of one or more devices anywhere; Show real-time electrical parameter and electrical energy parameter, history curve and logout, warning message, equipment state (opened/closed, temperature, pressure etc.), control triggers and other analysis tool; Carry out complicated data computation by Virtual Processor, show simultaneously and write down initial data; Optional form or the User Defined form of having disposed, by numeral, dial, rod figure or tendency chart, coordinate or front view, map, formations such as photo and animation; Set up the hyperlink between chart, can check relevant detail content by simple selection, for example by checking the general status of certain position, click the situation that certain bar branch road can be checked branch road, a certain disturbance event of clicking branch road again can be checked the event analysis of this disturbance; Quote and analyze the data message of selected scope easily by query wizard (Query Wizard).
The energy monitor system is when realizing form, and specifically can be: form generates automatically, or generates on schedule, or is generated by Event triggered, and can send automatically by email or HTML; For standard forms, can adopt report wizard quickly and easily, generate form by Microsoft Excel; For energy and requirement form, can unite the multichannel feeder line, the expense of each metering period is consistent with actual billing structure in the definition period, and has perpetual calendar and time-shared charge; For the load curve form, at the appointed time Duan system's operating position comprises markers and peak value consumption; For meeting IEC61000-4-30 and EN50160 form, can adopt predefined field to indicate system power quality level, comprise flickering; For the power quality analysis form, can be disturbance waveform, voltage tolerance curve and harmonic wave block diagram; For self-defined report, can pass through Visual Basic or SQL Server report tool, as Crystal Reports (crystal report) report customization, further analyze.
The energy monitor system can show actual ruuning situation and carry out trend analysis in conjunction with ION Enterprise data and other database.Specifically can be: produce one or more tendency charts, carry out data analysis by simple view; The trend of any parameter: voltage, electric current, power, power factor, requirement, prediction requirement, electric energy, harmonic wave, temperature etc.; Produce the load curve of a plurality of stoichiometric points, can in system, carry out the relevant parameter comparative analysis; Generate the actual load curve that uses, peak value display requirement, critical trends, or limit capacity; The expenses relevant such as every mansion in the tracking system, every feeder line, each equipment with electric energy.
The microgrid supervisory control system has following advantage:
1, realize control and adjusting to micro power network system, when guaranteeing that multiple distributed energy is got involved, the stable operation of microgrid system.
2, realization is to the monitoring of micro power network system, and the user can understand the ruuning situation of microgrid system in real time, the quality of power supply and electricity consumption situation.Can formulate rational power management policy according to the data of gathering.
3, realize the Comprehensive Control of multiple distributed energy by the microgrid control system, can realize two-way interaction, improve the service efficiency of green energy resource, thereby reach the effect of energy-saving and emission-reduction, have very high social benefit and economic benefit with electrical network.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims (8)

1. the supervisory control system of the little electrical network of intelligence is characterized in that, comprising:
Control device is connected with distributed power generation device and load in the little electrical network of described intelligence, is used for controlling described distributed power generation device and described load according to default mode;
Monitoring device is connected with distributed power generation device, civil power loop and load in the little electrical network of described intelligence, is used to obtain the operational factor of described distributed power generation device, described civil power loop and described load;
Output device is connected with described monitoring device, is used to show the service data of described distributed power generation device and described load.
2. supervisory control system according to claim 1 is characterized in that, described control device comprises:
Switch control circuit is connected with the control end of the contactor in civil power loop;
The generator connecting in parallel with system regulating system is connected with the control end of generator in the little electrical network of described intelligence, is used to control the frequency and/or the phase place of described generator;
The solar energy control device is connected with the control end of device of solar generating in the little electrical network of described intelligence, is used to make described device of solar generating and described civil power to be incorporated into the power networks or off-the-line.
3. supervisory control system according to claim 1 is characterized in that, described monitoring device comprises:
First parts are connected with generator in the little electrical network of described intelligence, are used to monitor the operational factor of described generator;
Second parts are connected with civil power loop in the little electrical network of described intelligence, are used to monitor the operational factor in described civil power loop;
The 3rd parts are connected with device of solar generating in the little electrical network of described intelligence, are used to monitor the operational factor of described device of solar generating.
4. supervisory control system according to claim 3 is characterized in that described monitoring device also comprises the power quality analysis parts, is connected in data acquisition position default in the little electrical network of described intelligence.
5. supervisory control system according to claim 3 is characterized in that described monitoring device also comprises the electric energy metrical parts, is connected in electric energy metrical position default in the little electrical network of described intelligence.
6. supervisory control system according to claim 4 is characterized in that, described output device also is connected with described power quality analysis parts, is used to receive and export the data that described power quality analysis parts are gathered.
7. supervisory control system according to claim 5 is characterized in that, described output device also is connected with described electric energy metrical parts, is used to receive and export the energy data that described electric energy metrical parts metering obtains.
8. supervisory control system according to claim 7 is characterized in that, comprises calculating unit in the described output device, is used for described energy data is carried out computing, generates statistical report form.
CN201020278347XU 2010-07-30 2010-07-30 Monitoring system of intelligent micro-grid Expired - Lifetime CN201789341U (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102495333A (en) * 2011-11-25 2012-06-13 北京金风科创风电设备有限公司 Method for distinguishing inner faults of micro-grid power system
CN102509195A (en) * 2011-11-21 2012-06-20 携程计算机技术(上海)有限公司 Digitalized management platform for call center
CN102710784A (en) * 2012-06-14 2012-10-03 国电南瑞科技股份有限公司 Electric energy quality communication method applied to microgrid
CN102830317A (en) * 2012-09-18 2012-12-19 山东电力集团公司济宁供电公司 Distributed power generating dispersed state monitoring device
CN102914707A (en) * 2011-08-01 2013-02-06 通用电气公司 System and method to monitor the operation of a power generation system
CN103178540A (en) * 2011-12-26 2013-06-26 新奥科技发展有限公司 Microgrid and ceaseless microgrid-connecting method thereof
CN103365257A (en) * 2012-04-10 2013-10-23 玮力节能科技有限公司 Energy-saving monitoring network interface system
CN104935007A (en) * 2015-06-16 2015-09-23 国网天津市电力公司 Control method for gird-connected operation of distributed power supply
CN105182870A (en) * 2015-08-25 2015-12-23 国网浙江杭州市富阳区供电公司 Control method and system for distributed power station equipment
CN108829065A (en) * 2018-07-16 2018-11-16 东北大学 Distributed generation system time lag based on event triggering exports cooperative control method
CN111541306A (en) * 2020-05-14 2020-08-14 国网内蒙古东部电力有限公司电力科学研究院 Micro-grid power device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914707A (en) * 2011-08-01 2013-02-06 通用电气公司 System and method to monitor the operation of a power generation system
CN102509195A (en) * 2011-11-21 2012-06-20 携程计算机技术(上海)有限公司 Digitalized management platform for call center
CN102495333A (en) * 2011-11-25 2012-06-13 北京金风科创风电设备有限公司 Method for distinguishing inner faults of micro-grid power system
CN103178540A (en) * 2011-12-26 2013-06-26 新奥科技发展有限公司 Microgrid and ceaseless microgrid-connecting method thereof
CN103365257A (en) * 2012-04-10 2013-10-23 玮力节能科技有限公司 Energy-saving monitoring network interface system
CN102710784A (en) * 2012-06-14 2012-10-03 国电南瑞科技股份有限公司 Electric energy quality communication method applied to microgrid
CN102830317A (en) * 2012-09-18 2012-12-19 山东电力集团公司济宁供电公司 Distributed power generating dispersed state monitoring device
CN104935007A (en) * 2015-06-16 2015-09-23 国网天津市电力公司 Control method for gird-connected operation of distributed power supply
CN104935007B (en) * 2015-06-16 2017-07-28 国网天津市电力公司 The control method that a kind of distributed power source is incorporated into the power networks
CN105182870A (en) * 2015-08-25 2015-12-23 国网浙江杭州市富阳区供电公司 Control method and system for distributed power station equipment
CN108829065A (en) * 2018-07-16 2018-11-16 东北大学 Distributed generation system time lag based on event triggering exports cooperative control method
CN111541306A (en) * 2020-05-14 2020-08-14 国网内蒙古东部电力有限公司电力科学研究院 Micro-grid power device

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