CN201611785U - On-line dynamic electric energy quality integrated control apparatus - Google Patents
On-line dynamic electric energy quality integrated control apparatus Download PDFInfo
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- CN201611785U CN201611785U CN2010201510244U CN201020151024U CN201611785U CN 201611785 U CN201611785 U CN 201611785U CN 2010201510244 U CN2010201510244 U CN 2010201510244U CN 201020151024 U CN201020151024 U CN 201020151024U CN 201611785 U CN201611785 U CN 201611785U
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model relates to an electric energy quality monitoring and controlling apparatus, which belongs to the technical field of an electric power system, especially relates to an on-line dynamic electric energy quality integrated control apparatus, characterized in that, the utility model adopts a three-phase network analysis acquisition instrument and the DSP technology, an FFT computational method to real time acquire parameters of an electric network and can switch all capacitor sets, adopts a three-phase disbalance compensating system to implement the reactive compensation, and the utility model has the active filter function to compensate the harmonic current and can not generate the resonance with the system, the utility model can prevent the voltage falling and flicker and the damages of the electronic apparatuses, the utility model is applied to industry fields with high application electric load and high harmonic pollution such as electrified railroad, metallurgy, mine and oil field.
Description
Technical field
The utility model relates to a kind of online dynamic power quality composite control apparatus, can be applicable to electric railway, metallurgy, mine, and the oil field height is answered power load, the industrial circle that higher harmonics pollutes.
Background technology
The quality of power supply is the important indicator of power system operation, electrical network and user is all had a very important role, along with rapid development of national economy, to the also raising day by day of requirement of the quality of power supply.Existing electric energy quality monitoring product major part is the stable state equipment for monitoring power quality, lacks the device that dynamic power quality is monitored and analyzed.
Application number is that the patent application of 01257838.X discloses a kind of quality of power supply on-line monitoring device, it can realize the function of the on-line monitoring quality of power supply, but it is a double digital signal processor the processor connection employing, complex structure, and the interference to harmonic wave lacks effectively processing, can't carry out reactive power compensation to each cycle of electrical network; And application number to be 200620060027.0 utility model application disclose a kind of quality of power supply on-line analysis supervising device equally, though it has adopted the simple relatively single DSP structure of structure, the same effective means of handling harmonic wave and reactive power compensation that lacks.
The utility model content
The utility model aims to provide the total solution of a kind of Power Quality Detection, analysis and control, it is by multi-functional electrical energy parameter harvester and Treatment Analysis software, can online dynamic real-time compensating power and filtering harmonic wave, compensating three-phase unbalance, not can with system's generation resonance, and can form complete electric energy quality monitoring network.
In order to address the above problem, the utility model discloses a kind of online dynamic power quality composite control apparatus, comprise Power Entry Module, filtration module, electrical energy parameter sampling and processing module, controller module and compensating module; Wherein, described filtration module is connected with described Power Entry Module, described electrical energy parameter sampling is connected with described filtration module with processing module, and described controller module is connected with processing module with described electrical energy parameter sampling, and described compensating module is connected with described controller module.
Preferably, also comprise at least a in local memory module, human-computer interaction module, the communication module.
Preferably, described filtration module adopts capacitor/reactor branch to absorb the harmonic wave of specific times.
Preferably, described controller module adopts three-phase network to analyze the parameters that Acquisition Instrument, controller and corresponding calculated program are calculated electrical network in real time.
Preferably, it is characterized in that described controller is DSP, described calculation procedure is a fft algorithm.
Preferably, described compensating module comprises electronic switch module and capacity reactance device module; Electronic switch module adopts controllable silicon, and capacity reactance device module adopts the three-phase imbalance bucking-out system.
The utility model can be finished whole compensation, filtering in 5-20ms, fast reactive compensation and quick filter carry out simultaneously; Use zero passage detection, switching technology, overcome the surge impact electric current; In conjunction with unique scan function, avoid reactor heating, capacitor specific characteristics drift, improve useful life greatly, and the capacitor average statistics life-span reaches 10 years, has maintenance cost, long stationary filtering characteristic cheaply.
Description of drawings
Fig. 1: the structural representation of online dynamic power quality composite control apparatus of the present utility model.
Symbol description
1 Power Entry Module
2 filtration modules
Sampling of 3 electrical energy parameters and processing module
4 controller modules
5 compensating modules
6 local memory modules
7 human-computer interaction modules
8 communication modules
Embodiment
Below in conjunction with description of drawings composition structure of the present utility model and handling process.
As shown in Figure 1, this online dynamic power quality composite control apparatus mainly comprises Power Entry Module 1, filtration module 2, electrical energy parameter sampling and processing module 3, controller module 4, compensating module 5; Can also comprise at least a in local memory module 6, human-computer interaction module 7, the communication module 8.
Power Entry Module 1 is used for the three-phase voltage on the electrical network, this online dynamic power quality composite control apparatus of current signal input; It can adopt various ways such as plug, socket, interface to exist.
Prime at this Power Entry Module 1, can also adopt a switch module (for example switch with mechanical contact), input (switch module can certainly be arranged on the back level of Power Entry Module 1, be used to control the input of the filtration module 2 of level backward of three-phase electricity signal) in order to the three-phase electricity signal on the control electrical network.
Filtration module 2 is connected with Power Entry Module 1, is used for the harmonic wave of filtering three-phase electricity signal.Usually adopt capacitor/reactor branch to absorb the harmonic wave of specific times, reduce total percent harmonic distortion (THD).This is more common in the prior art, does not repeat them here.
The electrical energy parameter sampling is connected with filtration module 2 with processing module 3, is used for to taking a sample and relevant treatment through filtered three-phase electricity signal conversion of signals being become to be fit to the signal that controller module 4 is handled.
Controller module 4 is connected with processing module 3 with the electrical energy parameter sampling, be used to gather the power network signal that electrical energy parameter is taken a sample and processing module 2 sends, and adopt three-phase network to analyze Acquisition Instrument, controller (for example DSP) and corresponding calculated program (fft algorithm for example, be Fourier transform) calculate the parameters of electrical network, for example voltage, electric current, power, power factor, voltage fluctuation flickering, Voltage unbalance rate, negative sequence voltage electric current, positive sequence voltage electric current, residual voltage electric current, current imbalance rate, frequency etc. in real time.
Compensating module 5 is connected with controller module 4, in order to realize reactive power compensation, wherein mainly comprises electronic switch module and capacity reactance device module etc.Electronic switch module for example is a controllable silicon.Capacity reactance device module adopts the three-phase imbalance bucking-out system, and compensation condenser group rated voltage for example is 480V, and capacitor is divided into three groups, is delta connection, and every group connects L1-L2, L2-L3, L3-L1 respectively.When motor work in a single day, controller carries out the electrical network check and analysis synchronously, determine to connect the required reactive power of motor on L1-L2, L2-L3, the L3-L1 power supply respectively, and with target value set relatively, the capacitor group of the different capabilities of switching correspondence on L1-L2, L2-L3, L3-L1, thereby timely compensating power.
This online dynamic power quality composite control apparatus is from electrical network detection, computing, to triggering silicon controlled module, realizing reactive power compensation, total response time≤20ms until opening-closing capacitor bank.And for the compensation of voltage landing and flickering, also be in the existing product the most fast.
This online dynamic power quality composite control apparatus can also comprise local memory module 6, it is connected with controller module 4, the electrical network three-phase electricity signal parameter that is used for real time record and storage of collected, form historical data, can take at any time when reading these data in the needs demonstration or by communication.
This online dynamic power quality composite control apparatus can also comprise human-computer interaction module 7 (output unit such as display screen for example, input units such as keyboard, mouse, touch-screen), it is connected with controller module 4, be used for the data that this device is gathered in real time are shown to the user, the user also can pass through input block (keyboard, mouse etc.) and carry out corresponding input operation, is used to be provided with parameter, adjusts controller algorithm and program etc.
This online dynamic power quality composite control apparatus can also comprise communication module 8, for example various wired or wireless communication interfaces, RS232, RS485 etc. can realize real-time communication with remote equipment (for example host computer, remote monitoring center etc.), upload, data download etc.
Through checking, the utility model is applicable to electric railway, metallurgy, mine, and the oil field height is answered power load, the industrial circle that higher harmonics pollutes.
For existing electric energy quality monitoring device, it also has following advantage:
1. the capacitor group is thrown/cut to electronic switching element fast;
2. each cycle to electrical network carries out reactive power compensation (overall response time 5～20ms);
3. improve regional generator system on-load ability, as diesel engine generator, wind power station etc., energy savings;
4. prevent electric voltage dropping and flickering, prevent the damage of sensitive electronics;
5. even filtering harmonic wave is at the occasion that harmonic wave is arranged accurate power controlling factor still;
6. Du Te scan function significantly reduces the temperature rise of capacitor and reactor;
7. prolong the useful life of switching device and capacitor;
8. establish three-phase network in and analyze Acquisition Instrument, measure all electrical network parameters that comprise harmonic wave;
9. Du Te self diagnosis and comprehensive image and text report capability;
10. be suitable for real-time application scenario, as electric welding machine, motor start-up, precision electronic device equipment etc.;
11. modular construction, installation and maintenance are convenient and swift;
12. communication interface can be connected communication with computer, takes remote measurement, remote control and printing reports;
13. the cabinet external form also can design (as MNS, GCS, GCK, GGD etc.) according to user's request.
With way of example the utility model is illustrated above, but the utility model is not limited to above-mentioned specific embodiment, all any change or modification of doing based on the utility model all belong to the claimed scope of the utility model.
Claims (6)
1. an online dynamic power quality composite control apparatus is characterized in that, comprises Power Entry Module (1), filtration module (2), electrical energy parameter sampling and processing module (3), controller module (4) and compensating module (5); Wherein, described filtration module (2) is connected with described Power Entry Module (1), described electrical energy parameter sampling is connected with described filtration module (2) with processing module (3), described controller module (4) is connected with processing module (3) with described electrical energy parameter sampling, and described compensating module (5) is connected with described controller module (4).
2. online dynamic power quality composite control apparatus according to claim 1 is characterized in that, also comprises at least a in local memory module (6), human-computer interaction module (7), the communication module (8).
3. online dynamic power quality composite control apparatus according to claim 1 is characterized in that, described filtration module (2) adopts capacitor/reactor branch to absorb the harmonic wave of specific times.
4. online dynamic power quality composite control apparatus according to claim 1 is characterized in that, described controller module (4) adopts three-phase network to analyze the parameters that Acquisition Instrument, controller and corresponding calculated program are calculated electrical network in real time.
5. online dynamic power quality composite control apparatus according to claim 4 is characterized in that described controller is DSP, and described calculation procedure is a fft algorithm.
6. online dynamic power quality composite control apparatus according to claim 1 is characterized in that, described compensating module (5) comprises electronic switch module and capacity reactance device module; Electronic switch module adopts controllable silicon, and capacity reactance device module adopts the three-phase imbalance bucking-out system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201510244U CN201611785U (en) | 2010-04-07 | 2010-04-07 | On-line dynamic electric energy quality integrated control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201510244U CN201611785U (en) | 2010-04-07 | 2010-04-07 | On-line dynamic electric energy quality integrated control apparatus |
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| Publication Number | Publication Date |
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| CN201611785U true CN201611785U (en) | 2010-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201510244U Expired - Fee Related CN201611785U (en) | 2010-04-07 | 2010-04-07 | On-line dynamic electric energy quality integrated control apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832632A (en) * | 2012-09-14 | 2012-12-19 | 重庆大学 | Controllable interphase power transfer method and system |
| WO2014048336A1 (en) * | 2012-09-27 | 2014-04-03 | 国家电网公司 | Coordination control method for facts devices of new energy delivery system |
-
2010
- 2010-04-07 CN CN2010201510244U patent/CN201611785U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832632A (en) * | 2012-09-14 | 2012-12-19 | 重庆大学 | Controllable interphase power transfer method and system |
| CN102832632B (en) * | 2012-09-14 | 2014-10-08 | 重庆大学 | Controllable interphase power transfer method and system |
| WO2014048336A1 (en) * | 2012-09-27 | 2014-04-03 | 国家电网公司 | Coordination control method for facts devices of new energy delivery system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101020 Termination date: 20110407 |