CN203942292U - A kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system - Google Patents
A kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system Download PDFInfo
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- CN203942292U CN203942292U CN201420386134.7U CN201420386134U CN203942292U CN 203942292 U CN203942292 U CN 203942292U CN 201420386134 U CN201420386134 U CN 201420386134U CN 203942292 U CN203942292 U CN 203942292U
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- 230000005611 electricity Effects 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 230000005619 thermoelectricity Effects 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 54
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000006870 function Effects 0.000 abstract description 4
- 238000012905 input function Methods 0.000 abstract description 2
- 230000008447 perception Effects 0.000 abstract description 2
- 230000003750 conditioning effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 206010003830 Automatism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The utility model belongs to power system operation control technology field, relate in particular to a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system.It comprises multi-source power system reactive power coordination control terminal device, wind generator system, photovoltaic generating system, thermoelectricity electricity generation system, load A, load B, SVG and central monitoring unit.The utility model accesses in the reactive power flow control of electrical networks at a large amount of distributed power sources, according to the following optimal load flow constantly of electrical network, calculates, and reaches control operation in a moment of corresponding electric network swim information.Wherein multi-source power system reactive power is coordinated the auxiliary connection in series-parallel various modes access that line inductance, electric capacity can be provided of control terminal device, realize input function and the auxiliary machine function of cutting of perception and capacitive reactive power, guaranteed that electrical network accurately controls without time delay reactive power flow is optimum, avoided randomness and the uncertainty of wind generator system and photovoltaic generating system.
Description
Technical field
The utility model belongs to power system operation control technology field, relate in particular to a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system.
Background technology
In order to improve weak node voltage levvl and stable wish degree in net, avoid even off-the-line of electric grid large area voltage collapse, realize the stable operation of electric power system, require electrical network to realize effective control of reactive power flow, yet, along with wind-powered electricity generation and photovoltaic generation access electrical network in a large number, power type and structure generation great variety in electrical network, for this class, contain multi-source electrical network, because new forms of energy are subject to effect of natural conditions large, exert oneself and there is randomness and fluctuation, so except the load variations as receiving end can cause the fluctuation of net interior nodes voltage, the random fluctuation of exerting oneself as the grid-connected power generation system of sending end also will cause the change of reactive power flow in net, cause node voltage to fluctuate, this makes to net interior weak node voltage levvl and stability margin significantly reduces, idle control problem containing multi-source electrical network is more complicated and difficult.Up to now, not for Reactive Power Control method and the self-contained unit considered containing multi-source electrical network, electric network reactive-load control technology be take automatism voltage control AVC as main, Power Flow Information according to each node in Real-time Collection net, carry out the unified layering regulation and control after Optimal calculation, and wind energy turbine set mainly adopts the grid-connected point voltage of monitoring to control in real time, control strategy has fuzzy control, Based Intelligent Control, hierarchical control etc.The regulation and control result of these control devices is all delayed in Power Flow Information collection network state constantly, control between time delay, the randomness of wind generator system and photovoltaic generating system and uncertainty can make current real network state (controlling practical function time point) and collection moment network state have larger difference, reduce and control effect, the balance that even may worsen reactive power in net, has a strong impact on the stable operation of electrical network.
Utility model content
The problem existing for prior art, the utility model provide a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system.
Containing multi-source electrical network without a time delay OPTIMAL REACTIVE POWER coordinated control system, comprise that multi-source power system reactive power coordinates control terminal device, wind generator system, photovoltaic generating system, thermoelectricity electricity generation system, load A, load B, SVG and central monitoring unit; Wherein, between wind generator system and electrical network, be connected with the first multi-source power system reactive power and coordinate control terminal device, between photovoltaic generating system and electrical network, be connected with the second multi-source power system reactive power and coordinate control terminal device, between thermoelectricity electricity generation system and electrical network, be connected with the 3rd multi-source power system reactive power and coordinate control terminal device, between load A and electrical network, be connected with the 4th multi-source power system reactive power and coordinate control terminal device, between electrical network and load B, be connected with the 5th multi-source power system reactive power and coordinate control terminal device; The output of central monitoring unit is coordinated control terminal device with each multi-source power system reactive power respectively and is connected; Each multi-source power system reactive power is coordinated control terminal device and is included three single-phase reactive powers coordination control circuits, and each single-phase reactive power coordination control circuit is all identical;
Described single-phase reactive power is coordinated control circuit: comprise the first gate leve controlled thyristor V
1, the second gate leve controlled thyristor V
2, the first diode VD
1, the second diode VD
2, the first igbt T
1, the second igbt T
2, the 3rd igbt T
3, the 4th igbt T
4, the 5th igbt T
5, the 6th igbt T
6, the 7th igbt T
7, prevent overvoltage lightning arrester ZNO
1, the first capacitor C
1, the second capacitor C
2, AC circuit breaker K
1, energy consumption resistance R
1, divider resistance R
2, inductance L
1;
The second gate leve controlled thyristor V
2anode access multi-source power network line in, the second gate leve controlled thyristor V
2negative electrode connect the first capacitor C
1one end, the first gate leve controlled thyristor V
1negative electrode connect the second gate leve controlled thyristor V
2anode, the first gate leve controlled thyristor V
1anodic bonding to the second gate leve controlled thyristor V
2negative electrode and the first capacitor C
1one end between, the first capacitor C
1the other end connect AC circuit breaker K
1one end, AC circuit breaker K
1other end access multi-source power network line in, lightning arrester ZNO
1an end be connected to the second gate leve controlled thyristor V
2anode and the junction of multi-source power network line, lightning arrester ZNO
1the other end be connected to the second gate leve controlled thyristor V
2anode and the junction of multi-source power network line, the first igbt T
1collector electrode connect the second igbt T
2emitter, the first igbt T
1emitter connect the 6th igbt T
6emitter, the 6th igbt T
6collector electrode connect the 7th igbt T
7emitter, the 7th igbt T
7collector electrode connect the second igbt T
2collector electrode, inductance L
1one end be connected to the first igbt T
1emitter in the 6th igbt T
6emitter between, inductance L
1the other end connect the 4th igbt T
4collector electrode, the 4th igbt T
4emitter be connected to the 7th igbt T
7collector electrode and the second igbt T
2collector electrode between, the 3rd igbt T
3collector electrode be connected to inductance L
1one end, the 3rd igbt T
3emitter be connected to inductance L
1the other end, diode VD
1positive pole connect energy consumption resistance R
1one end, the 5th igbt T
5collector electrode connect inductance L
1one end, the 5th igbt T
5emitter connect the second capacitor C
2one end, the second capacitor C
2the other end connect divider resistance R
2one end, divider resistance R
2other end ground connection, diode VD
1negative pole be connected to inductance L
1one end and the 5th igbt T
5collector electrode between, multi-source power network line is also connected to the first igbt T
1collector electrode and the second igbt T
2emitter between, the 6th igbt T
6collector electrode and the emitter of the 7th igbt T7 between.
Described each multi-source power system reactive power is coordinated control terminal device and carry out reactive power coordination when its corresponding electricity generation system or load is exceeded each generator power limit, line power transmission limit and the node voltage limit, comprises the capacitive reactive power that increases electrical network lagging reactive power and increase electrical network.
When described wind generator system, photovoltaic generating system, wind-powered electricity generation electricity generation system or load do not exceed each generator power limit, line power transmission limit and the node voltage limit, AC circuit breaker K
1in cut-offfing state, the first igbt T
1, the 3rd igbt T
3, the 4th igbt T
4, the 7th igbt T
7closure, the 3rd igbt T
3, the 5th igbt T
5in cut-offfing state, inductance L
1, the first capacitor C
1, the second capacitor C
2all do not access electrical network, inductance L
1upper by direct voltage, multi-source power system reactive power is coordinated control terminal device any reactive power is not provided.
Described multi-source power system reactive power coordinate control terminal device at current electrical network when capacitive reactive power is superfluous, the second igbt T
2, the 6th igbt T
6closure, the 3rd igbt T
3in cut-offfing state, inductance L
1upper by direct voltage, the second igbt T
2, the 6th igbt T
6cut-off in cut-offfing state the 5th igbt T
5with AC circuit breaker K
1in cut-offfing state, the first capacitor C
1, the second capacitor C
2equal places in circuit not, inductance L
1series connection line attachment, increases electrical network lagging reactive power;
Described multi-source power system reactive power coordinate control terminal device at current electrical network when capacitive reactive power is not enough, the first igbt T
1, the 3rd igbt T
3, the 4th igbt T
4, the 5th igbt T
5, the 7th igbt T
7closure, AC circuit breaker K
1in cut-offfing state, the second igbt T
2, the 6th igbt T
6in cut-offfing state, the first capacitor C
1access power network line in parallel, inductance L
1, the second capacitor C
2all place in circuit not, increases electrical network capacitive reactive power.
It is superfluous and need to cut machine operation time in capacitive reactive power at current electrical network that described multi-source power system reactive power is coordinated control terminal device, the first igbt T
1, the second igbt T
2, the 3rd igbt T
3, the 4th igbt T
4, the 5th igbt T
5, the 6th igbt T
6, the 7th igbt T
7in cut-offfing state, AC circuit breaker K
1in cut-offfing state, wind generator system/photovoltaic generating system/wind-powered electricity generation electricity generation system cuts out, inductance L
1pass through VD
1and R
1formation loop releases energy.
Described multi-source power system reactive power is coordinated control terminal device when current mains by harmonics is too high, the second igbt T
2, the 3rd igbt T
3, the 6th igbt T
6in cut-offfing state, the first capacitor C
1do not access electrical network, the second capacitor C
2, inductance L
1series connection access, the second capacitor C
2access in parallel, forms filter circuit.
Described multi-source power system reactive power is coordinated control terminal device when grid stability declines, the first igbt T
1, the second igbt T
2, the 3rd igbt T
3, the 4th igbt T
4, the 5th igbt T
5, the 6th igbt T
6, the 7th igbt T
7in cut-offfing state, AC circuit breaker K
1in closure state, the first capacitor C
1series connection access power network line, inductance L
1, the second capacitor C
2equal places in circuit not, shortens the electrical distance of wind generator system/photovoltaic generating system/wind-powered electricity generation electricity generation system.
The beneficial effects of the utility model: the utility model be a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, in the reactive power flow of a large amount of distributed power source access electrical networks is controlled, according to the following optimal load flow constantly of electrical network, calculate, reach control operation in a moment of corresponding electric network swim information.Wherein multi-source power system reactive power is coordinated the auxiliary connection in series-parallel various modes access that line inductance, electric capacity can be provided of control terminal device, realize input function and the auxiliary machine function of cutting of perception and capacitive reactive power, guaranteed that electrical network is without the optimum accurately control of time delay reactive power flow, avoid randomness and the uncertainty of wind generator system and photovoltaic generating system to make current real network state, control practical function time point, have larger difference with collection moment network state.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model connection diagram;
Fig. 3 is the utility model circuit theory diagrams;
Fig. 4 is the signal conditioning circuit schematic diagram in the utility model;
Fig. 5 is data acquisition chip and the DSP circuit catenation principle figure in the utility model;
Fig. 6 is the M57962L chip circuit schematic diagram in the utility model;
Fig. 7 is that wind generator system, photovoltaic generating system, the wind-powered electricity generation electricity generation system in the utility model or the single-phase reactive power while not exceeding each generator power limit, line power transmission limit and the node voltage limit of loading are coordinated control circuit view;
Fig. 8 is that the multi-source power system reactive power in the utility model is coordinated control terminal device in current electrical network single-phase reactive power coordination control circuit view when capacitive reactive power is superfluous;
Fig. 9 is that the multi-source power system reactive power in the utility model is coordinated control terminal device in current electrical network single-phase reactive power coordination control circuit view when capacitive reactive power is not enough;
Figure 10 be multi-source power system reactive power in the utility model coordinate control terminal device current electrical network in capacitive reactive power superfluous and need to cut machine operation time single-phase reactive power coordinate control circuit view;
Figure 11 is that the multi-source power system reactive power in the utility model is coordinated control terminal device single-phase reactive power coordination control circuit view when current mains by harmonics is too high;
Figure 12 is that the multi-source power system reactive power in the utility model is coordinated control terminal device single-phase reactive power coordination control circuit view when grid stability declines.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
The utility model be a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coherent system, for carrying out reactive power compensation to containing multi-source electrical network, as shown in Figure 1, this system comprises wind generator system, photovoltaic generating system, thermoelectricity electricity generation system, load A, load B, SVG and central monitoring unit.
As shown in Figure 2, between wind generator system and electrical network, be connected with the first multi-source power system reactive power and coordinate control terminal device, between photovoltaic generating system and electrical network, be connected with the second multi-source power system reactive power and coordinate control terminal device, between thermoelectricity electricity generation system and electrical network, be connected with the 3rd multi-source power system reactive power and coordinate control terminal device, between load A and electrical network, be connected with the 4th multi-source power system reactive power and coordinate control terminal device, between electrical network and load B, be connected with the 5th multi-source power system reactive power and coordinate control terminal device.
The output of central monitoring unit respectively each multi-source power system reactive power is coordinated the connection of control terminal device; Each multi-source power system reactive power coordination control terminal device includes three phase reactive power coordination control circuit and three phase reactive power coordination control circuit is all identical; Central monitoring unit can be for setting the idle reference value of wind generator system, the idle reference value of photovoltaic generating system, the idle reference value of the idle reference value of wind-powered electricity generation electricity generation system and load, and judge respectively whether the idle reference value of the idle reference value of wind generator system, photovoltaic generating system or the idle reference value of wind-powered electricity generation electricity generation system exceed each generator power limit, line power transmission limit and the node voltage limit.
As shown in Figure 3, single-phase reactive power coordination control circuit comprises the first gate leve controlled thyristor V
1, the second gate leve controlled thyristor V
2, the first diode VD
1, the second diode VD
2, the first igbt T
1, the second igbt T
2, the 3rd igbt T
3, the 4th igbt T
4, the 5th igbt T
5, the 6th igbt T
6, the 7th igbt T
7, lightning arrester ZNO
1, the first capacitor C
1, the second capacitor C
2, AC circuit breaker K
1, energy consumption resistance R
1, divider resistance R
2, inductance L
1.
The second gate leve controlled thyristor V
2anode access multi-source power network line in, the second gate leve controlled thyristor V
2negative electrode connect the first capacitor C
1one end, the first gate leve controlled thyristor V
1negative electrode connect the second gate leve controlled thyristor V
2anode, the first gate leve controlled thyristor V
1anodic bonding to the second gate leve controlled thyristor V
2negative electrode and the first capacitor C
1one end between, the first capacitor C
1the other end connect AC circuit breaker K
1one end, AC circuit breaker K
1other end access multi-source power network line in, lightning arrester ZNO
1an end be connected to the second gate leve controlled thyristor V
2anode and the junction of multi-source power network line, lightning arrester ZNO
1the other end be connected to the second gate leve controlled thyristor V
2anode and the junction of multi-source power network line, the first igbt T
1collector electrode connect the second igbt T
2emitter, the first igbt T
1emitter connect the 6th igbt T
6emitter, the 6th igbt T
6collector electrode connect the 7th igbt T
7emitter, the 7th igbt T
7collector electrode connect the second igbt T
2collector electrode, inductance L
1one end be connected to the first igbt T
1emitter in the 6th igbt T
6emitter between, inductance L
1the other end connect the 4th igbt T
4collector electrode, the 4th igbt T
4emitter be connected to the 7th igbt T
7collector electrode and the second igbt T
2collector electrode between, the 3rd igbt T
3collector electrode be connected to inductance L
1one end, the 3rd igbt T
3emitter be connected to inductance L
1the other end, diode VD
1positive pole connect energy consumption resistance R
1one end, the 5th igbt T
5collector electrode connect inductance L
1one end, the 5th igbt T
5emitter connect the second capacitor C
2one end, the second capacitor C
2the other end connect divider resistance R
2one end, divider resistance R
2other end ground connection, diode VD
1negative pole be connected to inductance L
1one end and the 5th igbt T
5collector electrode between, multi-source power network line is also connected to the first igbt T
1collector electrode and the second igbt T
2emitter between, the 6th igbt T
6collector electrode and the emitter of the 7th igbt T7 between.
Central monitoring unit adopts the DSP of TMS320F28335 model, and the voltage transformer being connected in power network line adopts UDZ1-1 model, is connected to the Current Transmit in power network line
1adopt KHCT911L-600A/5A model, for preventing superpotential lightning arrester ZNO
1adopt HY1.5W-0.6/2.6 model.
Present embodiment has 5 groups of multi-source power system reactive powers to coordinate control terminal device,, and five groups of circuit structures are identical, and every group of multi-source power system reactive power coordinated control terminal device to be had, six signal conditioning circuits, and six circuit structures are identical.As shown in Figure 5, the input U/I of six signal conditioning circuits connects respectively the output of three voltage transformers and the output of three current transformers to signal conditioning circuit.
As shown in Figure 6, 6 signal conditioning circuits connect the dsp chip of TMS320F28335 model by ADS8364 model data acquisition chip, wherein, output+the OUT of signal conditioning circuit,-OUT, IN holds connection data acquisition chip successively+IN,-IN, REF end, the CS of data acquisition chip, RD, WR, EOC, CLK, D0～D15 accesses respectively the IS of the dsp chip of TMS320F28335 model, RE, WE, EXT_INY1, MCLKX, D0～D15, GPIO1～10 of dsp chip, 27 ports of 41～57 connect respectively 13 pin of 27 M57962L chips, as shown in Figure 7, multi-source power system reactive power of the corresponding connection of every 10 M57962L chips is coordinated control terminal device, and connect respectively the first igbt T by 5 pins connections of 7 M57962L chips
1base stage, the second igbt T
2base stage, the 3rd igbt T
3base stage, the 4th igbt T
4base stage, the 5th igbt T
5base stage, the 6th igbt T
6base stage, the 7th igbt T
7base stage, the 5 pins connections by 2 M57962L chips connect respectively the first gate pole controlled thyristor V
1gate pole, the second gate pole controlled thyristor V
2gate pole, 5 pins by 1 M57962L chip connect the first AC circuit breaker K respectively
1control end.
Each multi-source power system reactive power is coordinated control terminal device and carry out reactive power coordination when its corresponding electricity generation system or load is exceeded each generator power limit, line power transmission limit and the node voltage limit, comprises the capacitive reactive power that increases electrical network lagging reactive power and increase electrical network.
When wind generator system, photovoltaic generating system, wind-powered electricity generation electricity generation system or load do not exceed each generator power limit, line power transmission limit and the node voltage limit, as shown in Figure 7, AC circuit breaker K
1in cut-offfing state, the first igbt T
1, the 3rd igbt T
3, the 4th igbt T
4, the 7th igbt T
7closure, the 3rd igbt T
3, the 5th igbt T
5in cut-offfing state, inductance L
1, the first capacitor C
1, the second capacitor C
2all do not access electrical network, inductance L
1upper by direct voltage, multi-source power system reactive power is coordinated control terminal device any reactive power is not provided.
Multi-source power system reactive power coordinate control terminal device at current electrical network when capacitive reactive power is superfluous, as shown in Figure 8, the second igbt T
2, the 6th igbt T
6closure, the 3rd igbt T
3in cut-offfing state, inductance L
1upper by direct voltage, the second igbt T
2, the 6th igbt T
6cut-off in cut-offfing state the 5th igbt T
5with AC circuit breaker K
1in cut-offfing state, the first capacitor C
1, the second capacitor C
2equal places in circuit not, inductance L
1series connection line attachment, increases electrical network lagging reactive power.
Multi-source power system reactive power coordinate control terminal device at current electrical network when capacitive reactive power is not enough, as shown in Figure 9, the first igbt T
1, the 3rd igbt T
3, the 4th igbt T
4, the 5th igbt T
5, the 7th igbt T
7closure, AC circuit breaker K
1in cut-offfing state, the second igbt T
2, the 6th igbt T
6in cut-offfing state, the first capacitor C
1access power network line in parallel, inductance L
1, the second capacitor C
2all place in circuit not, increases electrical network capacitive reactive power.
It is superfluous and need to cut machine operation time in capacitive reactive power at current electrical network that multi-source power system reactive power is coordinated control terminal device, as shown in figure 10, and the first igbt T
1, the second igbt T
2, the 3rd igbt T
3, the 4th igbt T
4, the 5th igbt T
5, the 6th igbt T
6, the 7th igbt T
7in cut-offfing state, AC circuit breaker K
1in cut-offfing state, wind generator system/photovoltaic generating system/wind-powered electricity generation electricity generation system cuts out, inductance L
1pass through VD
1and R
1formation loop releases energy.
Multi-source power system reactive power is coordinated control terminal device when current mains by harmonics is too high, as shown in figure 11, and the second igbt T
2, the 3rd igbt T
3, the 6th igbt T
6in cut-offfing state, the first capacitor C
1do not access electrical network, the second capacitor C
2, inductance L
1series connection access, the second capacitor C
2access in parallel, forms filter circuit.
Multi-source power system reactive power is coordinated control terminal device when grid stability declines, as shown in figure 12, and the first igbt T
1, the second igbt T
2, the 3rd igbt T
3, the 4th igbt T
4, the 5th igbt T
5, the 6th igbt T
6, the 7th igbt T
7in cut-offfing state, AC circuit breaker K
1in closure state, the first capacitor C
1series connection access power network line, inductance L
1, the second capacitor C
2equal places in circuit not, shortens the electrical distance of wind generator system/photovoltaic generating system/wind-powered electricity generation electricity generation system.
Claims (9)
- Containing multi-source electrical network without a time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: comprise that multi-source power system reactive power coordinates control terminal device, wind generator system, photovoltaic generating system, thermoelectricity electricity generation system, load A, load B, SVG and central monitoring unit;Wherein, between wind generator system and electrical network, be connected with the first multi-source power system reactive power and coordinate control terminal device, between photovoltaic generating system and electrical network, be connected with the second multi-source power system reactive power and coordinate control terminal device, between thermoelectricity electricity generation system and electrical network, be connected with the 3rd multi-source power system reactive power and coordinate control terminal device, between load A and electrical network, be connected with the 4th multi-source power system reactive power and coordinate control terminal device, between electrical network and load B, be connected with the 5th multi-source power system reactive power and coordinate control terminal device;The output of central monitoring unit is coordinated control terminal device with each multi-source power system reactive power respectively and is connected; Each multi-source power system reactive power is coordinated control terminal device and is included three single-phase reactive powers coordination control circuits, and each single-phase reactive power coordination control circuit is all identical.
- According to claim 1 a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: described single-phase reactive power is coordinated control circuit: comprise the first gate leve controlled thyristor V 1, the second gate leve controlled thyristor V 2, the first diode VD 1, the second diode VD 2, the first igbt T 1, the second igbt T 2, the 3rd igbt T 3, the 4th igbt T 4, the 5th igbt T 5, the 6th igbt T 6, the 7th igbt T 7, prevent overvoltage lightning arrester ZNO 1, the first capacitor C 1, the second capacitor C 2, AC circuit breaker K 1, energy consumption resistance R 1, divider resistance R 2, inductance L 1;The second gate leve controlled thyristor V 2anode access multi-source power network line in, the second gate leve controlled thyristor V 2negative electrode connect the first capacitor C 1one end, the first gate leve controlled thyristor V 1negative electrode connect the second gate leve controlled thyristor V 2anode, the first gate leve controlled thyristor V 1anodic bonding to the second gate leve controlled thyristor V 2negative electrode and the first capacitor C 1one end between, the first capacitor C 1the other end connect AC circuit breaker K 1one end, AC circuit breaker K 1other end access multi-source power network line in, lightning arrester ZNO 1an end be connected to the second gate leve controlled thyristor V 2anode and the junction of multi-source power network line, lightning arrester ZNO 1the other end be connected to the second gate leve controlled thyristor V 2anode and the junction of multi-source power network line, the first igbt T 1collector electrode connect the second igbt T 2emitter, the first igbt T 1emitter connect the 6th igbt T 6emitter, the 6th igbt T 6collector electrode connect the 7th igbt T 7emitter, the 7th igbt T 7collector electrode connect the second igbt T 2collector electrode, inductance L 1one end be connected to the first igbt T 1emitter in the 6th igbt T 6emitter between, inductance L 1the other end connect the 4th igbt T 4collector electrode, the 4th igbt T 4emitter be connected to the 7th igbt T 7collector electrode and the second igbt T 2collector electrode between, the 3rd igbt T 3collector electrode be connected to inductance L 1one end, the 3rd igbt T 3emitter be connected to inductance L 1the other end, diode VD 1positive pole connect energy consumption resistance R 1one end, the 5th igbt T 5collector electrode connect inductance L 1one end, the 5th igbt T 5emitter connect the second capacitor C 2one end, the second capacitor C 2the other end connect divider resistance R 2one end, divider resistance R 2other end ground connection, diode VD 1negative pole be connected to inductance L 1one end and the 5th igbt T 5collector electrode between, multi-source power network line is also connected to the first igbt T 1collector electrode and the second igbt T 2emitter between, the 6th igbt T 6collector electrode and the emitter of the 7th igbt T7 between.
- According to claim 1 a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: described each multi-source power system reactive power is coordinated control terminal device and carry out reactive power coordination when its corresponding electricity generation system or load are exceeded each generator power limit, line power transmission limit and the node voltage limit, comprises the capacitive reactive power that increases electrical network lagging reactive power and increase electrical network.
- According to claim 1 a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: when described wind generator system, photovoltaic generating system, wind-powered electricity generation electricity generation system or load do not exceed each generator power limit, line power transmission limit and the node voltage limit, AC circuit breaker K 1in cut-offfing state, the first igbt T 1, the 3rd igbt T 3, the 4th igbt T 4, the 7th igbt T 7closure, the 3rd igbt T 3, the 5th igbt T 5in cut-offfing state, inductance L 1, the first capacitor C 1, the second capacitor C 2all do not access electrical network, inductance L 1upper by direct voltage, multi-source power system reactive power is coordinated control terminal device any reactive power is not provided.
- According to claim 1 a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: described multi-source power system reactive power coordinate control terminal device at current electrical network when capacitive reactive power is superfluous, the second igbt T 2, the 6th igbt T 6closure, the 3rd igbt T 3in cut-offfing state, inductance L 1upper by direct voltage, the second igbt T 2, the 6th igbt T 6cut-off in cut-offfing state the 5th igbt T 5with AC circuit breaker K 1in cut-offfing state, the first capacitor C 1, the second capacitor C 2equal places in circuit not, inductance L 1series connection line attachment, increases electrical network lagging reactive power.
- According to claim 1 a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: described multi-source power system reactive power coordinate control terminal device at current electrical network when capacitive reactive power is not enough, the first igbt T 1, the 3rd igbt T 3, the 4th igbt T 4, the 5th igbt T 5, the 7th igbt T 7closure, AC circuit breaker K 1in cut-offfing state, the second igbt T 2, the 6th igbt T 6in cut-offfing state, the first capacitor C 1access power network line in parallel, inductance L 1, the second capacitor C 2all place in circuit not, increases electrical network capacitive reactive power.
- According to claim 1 a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: it is superfluous and need to cut machine operation time in capacitive reactive power at current electrical network that described multi-source power system reactive power is coordinated control terminal device, the first igbt T 1, the second igbt T 2, the 3rd igbt T 3, the 4th igbt T 4, the 5th igbt T 5, the 6th igbt T 6, the 7th igbt T 7in cut-offfing state, AC circuit breaker K 1in cut-offfing state, wind generator system/photovoltaic generating system/wind-powered electricity generation electricity generation system cuts out, inductance L 1pass through VD 1and R 1formation loop releases energy.
- According to claim 4 a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: described multi-source power system reactive power is coordinated control terminal device when current mains by harmonics is too high, the second igbt T 2, the 3rd igbt T 3, the 6th igbt T 6in cut-offfing state, the first capacitor C 1do not access electrical network, the second capacitor C 2, inductance L 1series connection access, the second capacitor C 2access in parallel, forms filter circuit.
- According to claim 4 a kind of containing multi-source electrical network without time delay OPTIMAL REACTIVE POWER coordinated control system, it is characterized in that: described multi-source power system reactive power is coordinated control terminal device when grid stability declines, the first igbt T 1, the second igbt T 2, the 3rd igbt T 3, the 4th igbt T 4, the 5th igbt T 5, the 6th igbt T 6, the 7th igbt T 7in cut-offfing state, AC circuit breaker K 1in closure state, the first capacitor C 1series connection access power network line, inductance L 1, the second capacitor C 2equal places in circuit not, shortens the electrical distance of wind generator system/photovoltaic generating system/wind-powered electricity generation electricity generation system.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578091B (en) * | 2014-07-14 | 2017-09-05 | 国家电网公司 | The no-delay OPTIMAL REACTIVE POWER coordinated control system and method for a kind of power network containing multi-source |
| US10570882B2 (en) | 2017-11-13 | 2020-02-25 | General Electric Company | Dynamic active and reactive power capability for wind farms |
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2014
- 2014-07-14 CN CN201420386134.7U patent/CN203942292U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578091B (en) * | 2014-07-14 | 2017-09-05 | 国家电网公司 | The no-delay OPTIMAL REACTIVE POWER coordinated control system and method for a kind of power network containing multi-source |
| US10570882B2 (en) | 2017-11-13 | 2020-02-25 | General Electric Company | Dynamic active and reactive power capability for wind farms |
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