CN102222924A - Electric energy adjusting system and electric energy adjuster based on loads of common bus of substation - Google Patents
Electric energy adjusting system and electric energy adjuster based on loads of common bus of substation Download PDFInfo
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- CN102222924A CN102222924A CN2011101611121A CN201110161112A CN102222924A CN 102222924 A CN102222924 A CN 102222924A CN 2011101611121 A CN2011101611121 A CN 2011101611121A CN 201110161112 A CN201110161112 A CN 201110161112A CN 102222924 A CN102222924 A CN 102222924A
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- electric energy
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- transformer station
- energy regulator
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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
- Y02E40/20—Active power filtering [APF]
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Abstract
The embodiment of the invention provides an electric energy adjusting system and an electric energy adjuster based on loads of a common bus of a substation. The electric energy adjusting system comprises a comprehensive controller arranged at a substation end, and electric energy adjusters arranged at all load ends; the loads and the electric energy adjusters are connected with the common buses of the substation; each electric energy adjuster comprises an active filter, a dynamic reactive compensator and a fixed harmonic elimination reactive filter that are connected in series in sequence; the electric energy adjuster is connected in series with a corresponding load; the electric energy adjuster also comprises a DSP (digital signal processor) controller; the DSP controller is sued for receiving instructions emitted by the comprehensive controller arranged at the substation end by a wireless network, controls the dynamic reactive compensator and the active filter to work by integrating detected harmonic component and reactive power of the load ends according to the optimization and coordination algorithm, and transmits the control results back into the comprehensive controller of the substation end.
Description
Technical field
The invention belongs to the power technology field, relate in particular to a kind of electric energy regulating system and electric energy regulator of the load based on transformer station's common bus.
Background technology
Usually have a variety of loads on transformer station's common bus, the load that has is near apart from transformer station, and what have is far away apart from transformer station, is divided into industrial load and Commercial Load in addition.The reactive power and the harmonic content of transformer station often change, and need reasonably regulate it, otherwise can cause transformer station's collapse.
At present the mode that reactive power and harmonic content are regulated mainly contains two kinds: first kind is centralized control, promptly at transformer station's end to total reactive power with harmonic content compensates and filtering.The on-site quality of power supply is not necessarily high but each is loaded, and this is because of more possible reactive load power height, and the reactive power of other loads is low, repeals by implication between the two, causes total reactive power to reach balance.Second kind is decentralized control, promptly realize reactive power compensation and harmonic wave elimination at each load side, relatively independent between each load, do not have unified management and coordinate control, this just causes the reactive power of a load and harmonic component to be compensated by the compensation arrangement of another load, there is coupling each other, finally makes the reactive power compensation that transformer station is total and the elimination of harmonic component can not reach satisfied effect.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of electric energy regulating system and electric energy regulator of the load based on transformer station's common bus, can realize respectively load unified management and coordinate control of transformer station, strengthen the stability of transformer station's power supply.
For achieving the above object, one embodiment of the present of invention provide a kind of electric energy regulating system of the load based on transformer station's common bus, comprise: be positioned at the general controller and the electric energy regulator that is positioned at each load side of transformer station's end, described load links to each other with the common bus of transformer station with its electric energy regulator;
Described electric energy regulator comprise the active filter that is cascaded in order, dynamic reactive compensator and fixedly harmonic wave eliminate passive filter, described electric energy regulator is connected with corresponding load;
Described electric energy regulator also comprises dsp controller, described dsp controller is used for receiving the instruction that the general controller be positioned at transformer station's end is sent by wireless network, and the harmonic component and the reactive power of this load side of arriving of comprehensive detection, according to optimizing and tuning algorithm control dynamic reactive compensator and active filter carry out work, and will control the result and send back in the general controller that transformer station holds.
Preferably, three-phase six bridge arm circuit of described active filter for constituting by six insulated gate bipolar transistors, each insulated gate bipolar transistor diode of inverse parallel all wherein, the interchange end of described three-phase six bridge arm circuit is connected respectively on the common bus by three inductance, and the dc terminal of described three-phase six bridge arm circuit is connected to storage capacitor.
Preferably, described dynamic reactive compensator is made of four road capacitor compensation paths, is connected in series with a noncontacting switch and a power capacitor in the capacitor compensation path of every road.
Preferably, the noncontacting switch of described noncontacting switch for constituting by bidirectional thyristor.
Preferably, the capacity of the power capacitor in the capacitor compensation path of every road increases progressively according to 2 multiple.
Preferably, described fixedly harmonic filtration passive filter comprises No. three passive filters, is respectively applied for 5 times, 7 times and 11 order harmonic components of filtering this locality.
Preferably, every road passive filter comprises the LC combination of series connection.
On the other hand, the present invention also provides a kind of electric energy regulator, be positioned at load side, described load links to each other with the common bus of transformer station with its electric energy regulator, described electric energy regulator comprise the active filter that is cascaded in order, dynamic reactive compensator and fixedly harmonic wave eliminate passive filter, described electric energy regulator is connected with corresponding load;
Described electric energy regulator also comprises dsp controller, described dsp controller is used for receiving the instruction that the general controller be positioned at transformer station's end is sent by wireless network, and the harmonic component and the reactive power of this load side of arriving of comprehensive detection, according to optimizing and tuning algorithm control dynamic reactive compensator and active filter carry out work, and will control the result and send back in the general controller that transformer station holds.
Three-phase six bridge arm circuit that described active filter is served as reasons and stayed an insulated gate bipolar transistor to constitute, each insulated gate bipolar transistor diode of inverse parallel all wherein, the interchange end of described three-phase six bridge arm circuit is connected respectively on the common bus by three inductance, and the dc terminal of described three-phase six bridge arm circuit is connected to storage capacitor.
Described dynamic reactive compensator is made of four road capacitor compensation paths, is connected in series with a noncontacting switch and a power capacitor in the capacitor compensation path of every road.
The embodiment of the invention has realized principal and subordinate's control mode and the distributed frame between transformer station and the different load, has promptly realized the electric energy optimizing and the monitoring of each load, makes each load coordinate control again, has strengthened the stability of transformer station's power supply.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 be the load based on transformer station's common bus provided by the invention the electric energy regulating system based on electric network composition figure;
Fig. 2 is the structural representation of the electric energy regulator of each load side;
Fig. 3 be in the embodiment of the invention reactive power compensation between transformer station and each load concern schematic diagram;
Fig. 4 is at the schematic diagram that concerns of 1 one end dynamic reactive powers compensation of loading in the embodiment of the invention;
Fig. 5 be in the embodiment of the invention between transformer station and each load harmonic filtration concern schematic diagram;
Fig. 6 is at the schematic diagram that concerns of 1 one end filtering elimination of loading in the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 be the load based on transformer station's common bus provided by the invention the electric energy regulating system based on electric network composition figure.As shown in Figure 1, the scheme that the present invention adopts principal and subordinate's control mode and distributed frame to combine, the same bus of each shared transformer station that loads, its reactive power and harmonic component flow on common bus.Adopt wireless network to carry out exchanges data between transformer station and each load, can realize transformer station to the same management of each load with coordinate control, make decoupling zero mutually between each load, do not disturb mutually.
Particularly, the electric energy regulating system among the present invention comprises general controller that is positioned at transformer station's end and the electric energy regulator that is positioned at each load side.Wherein each load links to each other with the common bus of transformer station with its corresponding electric energy regulator.
The electric energy regulator of each load is mainly used in own characteristic and the requirement local according to load, controls the corresponding devices combination flexibly and realizes reactive power compensation and harmonic filtration.Fig. 2 shows the structural representation of the electric energy regulator of each load side, is the example explanation with k load (be designated as load k) in Fig. 2.
Electric energy regulator comprise the active filter 201 that is cascaded in order, dynamic reactive compensator 202 and fixedly harmonic wave eliminate passive filter 203, the electric energy regulator of each load is connected with loading accordingly.
In addition, electric energy regulator also comprises dsp controller 204, this dsp controller 204 is used for receiving the instruction that the general controller be positioned at transformer station's end is sent by wireless network, and the harmonic component and the reactive power of this load side of arriving of comprehensive detection, according to optimizing and tuning algorithm is controlled dynamic reactive compensator 202 and active filter 201 carries out work, in practice, the control of the switching realization of control dynamic reactive compensator 202 can be passed through, the operating state of the impulse magnitude control active filter 201 of active filter 201 can be delivered to by control to dynamic reactive compensator 202 operating states.
Below describe the concrete composition structure of inner each device of electric energy regulator among the present invention in detail.
As shown in Figure 2, active filter 20 is by six IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) three-phase six bridge arm circuit of Zu Chenging, and each IGBT device is corresponding diode of inverse parallel all, in Fig. 2, above-mentioned six IGBT are designated as T1, T2, T3, T4, T5, T6 in the drawings respectively, and diode antiparallel with it is designated as D1, D2, D3, D4, D5, D6 respectively.The interchange end of three-phase six bridge arm circuit is connected on the common bus by three inductance (La, Lb and Lc), and the dc terminal of three-phase six bridge arm circuit is connected on the storage capacitance C.The major function of active filter 210 is high order harmonic components of the local load of filtering and improves output waveform.
Dynamic reactive compensator 202 is made of four road capacitor compensation paths, is connected in series with a noncontacting switch and a power capacitor in the capacitor compensation path of every road, and wherein noncontacting switch is preferably the noncontacting switch that is made of bidirectional thyristor.In Fig. 2, series connection noncontacting switch K1 and power capacitor C1 in the first via capacitor compensation path, series connection noncontacting switch K2 and power capacitor C2 in second road capacitor compensation path, series connection noncontacting switch K3 and power capacitor C3 in the Third Road capacitor compensation path, series connection noncontacting switch K4 and power capacitor C4 in the four road capacitor compensation path.The order of switching is according to throwing earlier the principle of afterwards cutting.The every road of power capacitor C1-C4 capacitor volume increases progressively according to 2 multiple.The function of dynamic reactive compensator 202 is reactive powers of the local load of dynamic compensation.
Fixedly harmonic filtration passive filter 203 comprises No. three passive filters, and every path filter comprises the LC combination of series connection.In Fig. 2, first via filter is made up of L5 and C5, and second path filter is made up of L7 and C7, and the Third Road filter is made up of L11 and C11.The first via to Third Road filter is respectively applied for 5 times, 7 times fixing and 11 order harmonic components that leach local load.Simultaneously, the kinetic energy that also has reactive power compensation.
Below might as well describe the process that reactive power compensation and harmonic wave leach in detail with concrete example.
For reactive power compensation:
Fig. 3 shows the schematic diagram that concerns of reactive power compensation between transformer station and each load.Suppose that it is Q that transformer station need provide the reactive power total amount, and Q=Q
1+ Q
2+ Q
3If, directly carry out centralized compensation at transformer station's end, then Capacity Ratio is bigger, and reliability is also poor, therefore carries out distributed compensation, load 1 compensation Q
1, load 2 compensation Q
2, load 3 compensation Q
3, can be Q to transformer station's compensating power total amount equally.3 compensation arrangements break down if load, and then load 4 compensating power Q can inform in transformer station
3, keeping total reactive power is Q, has strengthened the stability of system.
Fig. 4 is the schematic diagram that concerns in the compensation of load 1 one end dynamic reactive powers.Suppose Q
1It is the reactive power of 3 unit quantities, the noncontacting switch K1 that dsp controller can dynamic reactive compensator then, the K2 closure, make C1 and C2 (wherein, C2=2*C1) be connected on the common bus, the reactive power of 3 unit quantities is provided, and noncontacting switch K3, K4 disconnects, and reactive power compensation is not provided.
For harmonic filtration:
Fig. 5 shows the schematic diagram that concerns of harmonic filtration between transformer station and each load.The harmonic wave of supposing transformer station is i
h=i
H1+ i
H2+ i
H3, the 1 harmonic carcellation current i of then loading
H1The 2 harmonic carcellation current i of loading
H2, the 3 harmonic carcellation current i of loading
H3
Fig. 6 shows the schematic diagram that concerns of load 1 one end filtering elimination.Suppose i
H1=i
Hl5+ i
Hl7+ i
Hl11+ i
HhThen dsp controller distributes the low-order harmonic current i
Hl5, i
Hl7, i
Hl11Carry out filtering by fixing harmonic wave cancellation element, and other high order harmonic component i
HhReach the residue harmonic wave and carry out filtering by active filter, in conjunction with both advantages, cost performance is improved, its waveform quality also improves.
Another embodiment of the present invention also provides a kind of electric energy regulator that is positioned at load side, and this adjuster is identical with above function and structure based on the electric energy regulator in the electric energy regulating system of the load of transformer station's common bus, repeats no more here.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. electric energy regulating system based on the load of transformer station's common bus, it is characterized in that, comprise: be positioned at the general controller and the electric energy regulator that is positioned at each load side of transformer station's end, described load links to each other with the common bus of transformer station with its electric energy regulator;
Described electric energy regulator comprise the active filter that is cascaded in order, dynamic reactive compensator and fixedly harmonic wave eliminate passive filter, described electric energy regulator is connected with corresponding load;
Described electric energy regulator also comprises dsp controller, described dsp controller is used for receiving the instruction that the general controller be positioned at transformer station's end is sent by wireless network, and the harmonic component and the reactive power of this load side of arriving of comprehensive detection, according to optimizing and tuning algorithm control dynamic reactive compensator and active filter carry out work, and will control the result and send back in the general controller that transformer station holds.
2. system according to claim 1, it is characterized in that, three-phase six bridge arm circuit of described active filter for constituting by six insulated gate bipolar transistors, each insulated gate bipolar transistor diode of inverse parallel all wherein, the interchange end of described three-phase six bridge arm circuit is connected respectively on the common bus by three inductance, and the dc terminal of described three-phase six bridge arm circuit is connected to storage capacitor.
3. system according to claim 1 is characterized in that, described dynamic reactive compensator is made of four road capacitor compensation paths, is connected in series with a noncontacting switch and a power capacitor in the capacitor compensation path of every road.
4. system according to claim 3 is characterized in that, the noncontacting switch of described noncontacting switch for being made of bidirectional thyristor.
5. system according to claim 3 is characterized in that, the capacity of the power capacitor in the capacitor compensation path of every road increases progressively according to 2 multiple.
6. system according to claim 1 is characterized in that, described fixedly harmonic filtration passive filter comprises No. three passive filters, is respectively applied for 5 times, 7 times and 11 order harmonic components of filtering this locality.
7. system according to claim 6 is characterized in that, every road passive filter comprises the LC combination of series connection.
8. electric energy regulator, it is characterized in that, be positioned at load side, described load links to each other with the common bus of transformer station with its electric energy regulator, described electric energy regulator comprise the active filter that is cascaded in order, dynamic reactive compensator and fixedly harmonic wave eliminate passive filter, described electric energy regulator is connected with corresponding load;
Described electric energy regulator also comprises dsp controller, described dsp controller is used for receiving the instruction that the general controller be positioned at transformer station's end is sent by wireless network, and the harmonic component and the reactive power of this load side of arriving of comprehensive detection, according to optimizing and tuning algorithm control dynamic reactive compensator and active filter carry out work, and will control the result and send back in the general controller that transformer station holds.
9. electric energy regulator according to claim 8, it is characterized in that, three-phase six bridge arm circuit that described active filter is served as reasons and stayed an insulated gate bipolar transistor to constitute, each insulated gate bipolar transistor diode of inverse parallel all wherein, the interchange end of described three-phase six bridge arm circuit is connected respectively on the common bus by three inductance, and the dc terminal of described three-phase six bridge arm circuit is connected to storage capacitor.
10. electric energy regulator according to claim 8 is characterized in that, described dynamic reactive compensator is made of four road capacitor compensation paths, is connected in series with a noncontacting switch and a power capacitor in the capacitor compensation path of every road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101611121A CN102222924A (en) | 2011-06-15 | 2011-06-15 | Electric energy adjusting system and electric energy adjuster based on loads of common bus of substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101611121A CN102222924A (en) | 2011-06-15 | 2011-06-15 | Electric energy adjusting system and electric energy adjuster based on loads of common bus of substation |
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| CN102222924A true CN102222924A (en) | 2011-10-19 |
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| CN2011101611121A Pending CN102222924A (en) | 2011-06-15 | 2011-06-15 | Electric energy adjusting system and electric energy adjuster based on loads of common bus of substation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086572A (en) * | 2017-05-22 | 2017-08-22 | 上海电力学院 | A kind of control system for rail traction transformer station |
| CN108551171A (en) * | 2018-03-16 | 2018-09-18 | 北京德威特电气科技股份有限公司 | compensation method and device, storage medium, processor |
| CN109510204A (en) * | 2018-12-26 | 2019-03-22 | 贵州电网有限责任公司 | A kind of active distribution network multilevel voltage quality treatment method based on multi-agent technology |
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| JP2004320859A (en) * | 2003-04-14 | 2004-11-11 | Hitachi Ltd | Reactive power compensator |
| CN101552469A (en) * | 2008-12-19 | 2009-10-07 | 上海电力学院 | Electrical energy control system based on a transformer substation and different loads of a common bus |
| CN101814734A (en) * | 2010-04-29 | 2010-08-25 | 鞍山市宏源自动化工程有限公司 | Electric energy quality optimization method based on fieldbuses |
| CN202103429U (en) * | 2011-06-15 | 2012-01-04 | 宁波电业局 | Electric energy adjusting system and electric energy regulators based on loads of shared bus of transformer station |
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2011
- 2011-06-15 CN CN2011101611121A patent/CN102222924A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004320859A (en) * | 2003-04-14 | 2004-11-11 | Hitachi Ltd | Reactive power compensator |
| CN101552469A (en) * | 2008-12-19 | 2009-10-07 | 上海电力学院 | Electrical energy control system based on a transformer substation and different loads of a common bus |
| CN101814734A (en) * | 2010-04-29 | 2010-08-25 | 鞍山市宏源自动化工程有限公司 | Electric energy quality optimization method based on fieldbuses |
| CN202103429U (en) * | 2011-06-15 | 2012-01-04 | 宁波电业局 | Electric energy adjusting system and electric energy regulators based on loads of shared bus of transformer station |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086572A (en) * | 2017-05-22 | 2017-08-22 | 上海电力学院 | A kind of control system for rail traction transformer station |
| CN107086572B (en) * | 2017-05-22 | 2023-08-29 | 上海电力学院 | Control system for railway traction substation |
| CN108551171A (en) * | 2018-03-16 | 2018-09-18 | 北京德威特电气科技股份有限公司 | compensation method and device, storage medium, processor |
| CN109510204A (en) * | 2018-12-26 | 2019-03-22 | 贵州电网有限责任公司 | A kind of active distribution network multilevel voltage quality treatment method based on multi-agent technology |
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Application publication date: 20111019 |