CN104348164A - Voltage control method aiming at 330kV wind power plant collecting transformer substation - Google Patents
Voltage control method aiming at 330kV wind power plant collecting transformer substation Download PDFInfo
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- CN104348164A CN104348164A CN201410530196.5A CN201410530196A CN104348164A CN 104348164 A CN104348164 A CN 104348164A CN 201410530196 A CN201410530196 A CN 201410530196A CN 104348164 A CN104348164 A CN 104348164A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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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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Abstract
The invention discloses a voltage control method aiming at a 330kV wind power plant collecting transformer substation. The method comprises the following steps that the wind power plant collecting transformer substation is controlled to carry out voltage out-of-limit judgment; a capacitance reactor of the device in the wind power plant is regulated and controlled; a lower stage executing station carries out longitudinal regulation in the regulation process, so that the voltage control on the wind power plant is completed. On the premise of ensuring the safe and economic operation of an electricity network, the goals of greatly improving the receiving and sending capability of the electricity network on new energy sources, reducing the wind curtailment and improving the new energy online electricity quantity are achieved.
Description
Technical field
The present invention relates to reactive power/voltage control technical field in scale generation of electricity by new energy process, particularly, relate to a kind of voltage control method collecting transformer station for 330kV wind energy turbine set.
Background technology
The large-scale new forms of energy base majority that China's wind-powered electricity generation produces after entering the large-scale development stage is positioned at " three northern areas of China " (northwest, northeast, North China); large-scale new forms of energy base is generally away from load center, and its electric power needs to be transported to load center to dissolve through long-distance, high voltage.For Gansu Power Grid, by April, 2014, the installed capacity of Gansu Power Grid grid connected wind power has reached 7,070,000 kilowatts, accounts for 20.2% of Gansu Power Grid total installed capacity (3,500 ten thousand kilowatts) capacity, becomes the second largest main force power supply being only second to thermoelectricity; Photovoltaic generation installed capacity has reached 4,350,000 kilowatts, accounts for 12.4% of Gansu Power Grid total installation of generating capacity, and simultaneously Gansu becomes China's photovoltaic and to install largest province.At present, Gansu Power Grid wind-powered electricity generation, photovoltaic generation installation account for 1/3 of Gansu Power Grid total installation of generating capacity.
Due to the intermittence of wind, light resources, randomness and fluctuation, the fluctuation of wind power output can cause large-scale wind electricity field voltage to occur corresponding fluctuation.When wind energy turbine set generation voltage comparatively large disturbances time, if do not have enough dynamic reactive to support, wind energy turbine set Voltage Drop will be caused.At present, the low-voltage tolerance of blower fan itself is very limited, and now Wind turbines is for the protection of self, often takes the mode of excision automatically, causes system to gain merit unbalance, and influential system is stablized; Meanwhile, asynchronous generator, does not possess the ability of maintenance and conditioner terminal voltage level, operationally also will from Systemic absorption reactive power, and therefore voltage stabilization sex chromosome mosaicism is more outstanding.
After system voltage falls, if electrical network can not provide enough idle, the Wind turbines set end voltage based on asynchronous generator cannot be rebuild, and causes overspeed protection or the under-voltage protection action excision Wind turbines of all asynchronous Wind turbines in whole wind energy turbine set; If protection cannot regular event, because the set end voltage of Wind turbines cannot be rebuild, then wind energy turbine set even regional power grid transient voltage unstability can be caused.Influence each other owing to exchanging between the voltage of whole electrical network of networked system and frequency, Jiuquan region wind power output significantly change must cause whole system voltage, frequency fluctuation, cause accident to expand further.Three fairly large blower fan off-grid accidents of Gansu Power Grid generation in 2011 are exactly cause for above-mentioned reasons.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of voltage control method collecting transformer station for 330kV wind energy turbine set, to realize improving electrical network to the receiving of new forms of energy and send ability, reduce to abandon wind, improve the advantage of new forms of energy electricity volume.
For achieving the above object, the technical solution used in the present invention is:
Collect a voltage control method for transformer station for 330kV wind energy turbine set, comprise the following steps:
Step one, wind energy turbine set are collected station control and are carried out voltage out-of-limit judgement;
Step 2, the capacity reactance device of device in wind energy turbine set to be regulated and controled;
Step 3, subordinate's actuating station regulate and carry out longitudinal adjustment; Thus the voltage control completed wind energy turbine set.
Preferably, described step one is specially:
Wind energy turbine set collect station control and secondary voltage control using substation high side voltage U2 as cutting point, draw through simulation calculation, it is 352 kV ~ 360kV that 330kV wind energy turbine set collects station control reference voltage, starts control strategy, meet scope finishing control at once when voltage out-of-limit.
Preferably, described step 2 is specially:
As U2 < 351kV, voltage is seriously out-of-limit, and directly substation reactor is moved back in grouping; When reactor all exits, capacitor is thrown in grouping, until U2 till control reference voltage or capacitor all drop into;
As 351kV≤U2 < 352kV, voltage critical is run, and carry out wind power output prediction and judge, if prediction wind power output will significantly reduce, voltage will be on the rise, for avoiding reactive power compensator frequent movement, stop regulation and control; If prediction wind power output can not significantly reduce, substation reactor is moved back in grouping; When reactor all exits, capacitor is thrown in grouping, until U2 till control reference voltage or capacitor all drop into;
As U2 > 361kV, voltage is seriously out-of-limit, and directly substation capacitor is moved back in grouping; When capacitor all exits, reactor is thrown in grouping, until U2 till control reference voltage or reactor all drop into;
As 360kV < U2≤361kV, voltage critical is run, and carries out wind power output prediction and judges; If prediction wind power output will significantly increase, voltage will have downward trend, for avoiding reactive power compensator frequent movement, stop regulation and control; If prediction wind power output can not significantly increase, substation capacitor is moved back in grouping; When capacitor all exits, reactor is thrown in grouping, until U2 till control reference voltage or reactor all drop into.
Preferably, described step 3 is specially:
When wind energy turbine set collect transformer station's regulation measure use up time, if substation voltage U 2 still runaways, then start and longitudinally regulate, issue adjusting command by substation to subordinate's actuating station;
As U2 < 352kV, when our station regulation measure is used up, transmitting order to lower levels controls the highest actuating station of sensitivity and regulates SVC/SVG, issues additional its capacitive reactive power compensation capacity, be limited, until U2 is at control reference voltage with the constraint of actuating station voltage and SVC/SVG capacity; If actuating station SVC/SVG pondage is used up and U2 < 352kV, the actuating station regulating wind power field that then transmitting order to lower levels control sensitivity is the highest is idle exerts oneself, be limited, until U2 is at control reference voltage with the constraint of actuating station voltage, the constraint of blower fan set end voltage and the blower fan Reactive-power control limit; If wind energy turbine set is idle, pondage of exerting oneself is used up and U2 < 352kV, then transmitting order to lower levels controls sensitivity time high actuating station and regulates; So regulate actuating station successively, until U2 till control reference voltage according to control sensitivity order from high to low;
As U2 > 360kV, when our station regulation measure is used up, transmitting order to lower levels controls the highest actuating station of sensitivity and regulates SVC/SVG, issues additional its inductive reactive power compensation capacity, be limited, until U2 is at control reference voltage with the constraint of actuating station voltage and SVC/SVG capacity; If actuating station SVC/SVG pondage is used up and U2 > 360kV, the actuating station regulating wind power field that then transmitting order to lower levels control sensitivity is the highest is idle exerts oneself, be limited, until U2 is at control reference voltage with the constraint of actuating station voltage, the constraint of blower fan set end voltage and the blower fan Reactive-power control limit; If wind energy turbine set is idle, pondage of exerting oneself is used up and U2 > 360kV, then transmitting order to lower levels controls sensitivity time high actuating station and regulates; So regulate actuating station successively, until U2 till control reference voltage according to control sensitivity order from high to low.
Technical scheme of the present invention has following beneficial effect:
Technical scheme of the present invention, after 330KV wind energy turbine set being collected to station and emulating, draws regulation and control voltage, and by reasonably regulating and controlling the equipment of electric field.Reach under the prerequisite ensureing power grid security economical operation, significantly improve electrical network to the receiving of new forms of energy and send ability, reduce to abandon wind, improve the object of new forms of energy electricity volume.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the voltage control method flow chart collecting transformer station for red building 330kV wind energy turbine set described in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
The present embodiment, collects transformer station for red building 330kV wind energy turbine set:
When substation voltage out-of-limit, first carry out substation and control on the spot, secondly consider subordinate's actuating station regulation and control, consider that wind energy turbine set collects the cooperation control between station simultaneously.The maincenter link that substation controls as power grid wind, completes the cooperation control to whole region while playing Link role.
As shown in Figure 1,
1) voltage out-of-limit judges:
Wind energy turbine set is collected station and is controlled (secondary voltage control) using substation high side voltage U2 as cutting point, is obtained by concrete simulation calculation, and it is [352,360] (kV) that red building 330kV wind energy turbine set collects station control reference voltage.Start control strategy when voltage out-of-limit, meet scope finishing control at once.
2) capacity reactance device regulation and control:
When red building becomes U2 < 351kV, voltage is seriously out-of-limit, and directly substation reactor is moved back in grouping; When reactor all exits, capacitor is thrown in grouping, till until U2, qualified or capacitor all drops into.
When red building becomes 351kV≤U2 < 352kV, voltage critical is run, and carries out wind power output prediction and judges.If prediction wind power output will significantly reduce, voltage will be on the rise, for avoiding reactive power compensator frequent movement, stop regulation and control; If prediction wind power output can not significantly reduce, substation reactor is moved back in grouping; When reactor all exits, capacitor is thrown in grouping, till until U2, qualified or capacitor all drops into.
When red building becomes U2 > 361kV, voltage is seriously out-of-limit, and directly substation capacitor is moved back in grouping; When capacitor all exits, reactor is thrown in grouping, till until U2, qualified or reactor all drops into.
When red building becomes 360kV < U2≤361kV, voltage critical is run, and carries out wind power output prediction and judges.If prediction wind power output will significantly increase, voltage will have downward trend, for avoiding reactive power compensator frequent movement, stop regulation and control; If prediction wind power output can not significantly increase, substation capacitor is moved back in grouping; When capacitor all exits, reactor is thrown in grouping, till until U2, qualified or reactor all drops into.
3) longitudinally regulate (subordinate's actuating station regulates):
When red building change our station regulation measure is used up, if substation voltage U 2 still runaways, then start and longitudinally regulate, issue adjusting command by substation to subordinate's actuating station.Specific as follows:
As U2 < 352kV, when our station regulation measure is used up, transmitting order to lower levels controls the highest actuating station of sensitivity and regulates SVC/SVG, issues additional its capacitive reactive power compensation capacity, be limited, until U2 meets scope with the constraint of actuating station voltage and SVC/SVG capacity; If actuating station SVC/SVG pondage is used up and U2 < 352kV, the actuating station regulating wind power field that then transmitting order to lower levels control sensitivity is the highest is idle exerts oneself, be limited, until U2 meets scope with the constraint of actuating station voltage, the constraint of blower fan set end voltage and the blower fan Reactive-power control limit; If wind energy turbine set is idle, pondage of exerting oneself is used up and U2 < 352kV, then transmitting order to lower levels controls sensitivity time high actuating station and regulates, and regulative mode is the same; So regulate actuating station successively, till U2 meets scope according to control sensitivity order from high to low.
As U2 > 360kV, when our station regulation measure is used up, transmitting order to lower levels controls the highest actuating station of sensitivity and regulates SVC/SVG, issues additional its inductive reactive power compensation capacity, be limited, until U2 meets scope with the constraint of actuating station voltage and SVC/SVG capacity; If actuating station SVC/SVG pondage is used up and U2 > 360kV, the actuating station regulating wind power field that then transmitting order to lower levels control sensitivity is the highest is idle exerts oneself, be limited, until U2 meets scope with the constraint of actuating station voltage, the constraint of blower fan set end voltage and the blower fan Reactive-power control limit; If wind energy turbine set is idle, pondage of exerting oneself is used up and U2 > 360kV, then transmitting order to lower levels controls sensitivity time high actuating station and regulates, and regulative mode is the same; So regulate actuating station successively, till U2 meets scope according to control sensitivity order from high to low.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. collect a voltage control method for transformer station for 330kV wind energy turbine set, it is characterized in that, comprise the following steps:
Step one, wind energy turbine set are collected station control and are carried out voltage out-of-limit judgement;
Step 2, the capacity reactance device of device in wind energy turbine set to be regulated and controled;
Step 3, subordinate's actuating station regulate and carry out longitudinal adjustment; Thus the voltage control completed wind energy turbine set.
2. the voltage control method collecting transformer station for 330kV wind energy turbine set according to claim 1, is characterized in that, described step one is specially:
Wind energy turbine set collect station control and secondary voltage control using substation high side voltage U2 as cutting point, draw through simulation calculation, it is 352 kV ~ 360kV that 330kV wind energy turbine set collects station control reference voltage, starts control strategy, meet scope finishing control at once when voltage out-of-limit.
3. the voltage control method collecting transformer station for 330kV wind energy turbine set according to claim 2, is characterized in that, described step 2 is specially:
As U2 < 351kV, voltage is seriously out-of-limit, and directly substation reactor is moved back in grouping; When reactor all exits, capacitor is thrown in grouping, until U2 till control reference voltage or capacitor all drop into;
As 351kV≤U2 < 352kV, voltage critical is run, and carry out wind power output prediction and judge, if prediction wind power output will significantly reduce, voltage will be on the rise, for avoiding reactive power compensator frequent movement, stop regulation and control; If prediction wind power output can not significantly reduce, substation reactor is moved back in grouping; When reactor all exits, capacitor is thrown in grouping, until U2 till control reference voltage or capacitor all drop into;
As U2 > 361kV, voltage is seriously out-of-limit, and directly substation capacitor is moved back in grouping; When capacitor all exits, reactor is thrown in grouping, until U2 till control reference voltage or reactor all drop into;
As 360kV < U2≤361kV, voltage critical is run, and carries out wind power output prediction and judges; If prediction wind power output will significantly increase, voltage will have downward trend, for avoiding reactive power compensator frequent movement, stop regulation and control; If prediction wind power output can not significantly increase, substation capacitor is moved back in grouping; When capacitor all exits, reactor is thrown in grouping, until U2 till control reference voltage or reactor all drop into.
4. the voltage control method collecting transformer station for 330kV wind energy turbine set according to claim 3, is characterized in that, described step 3 is specially:
When wind energy turbine set collect transformer station's regulation measure use up time, if substation voltage U 2 still runaways, then start and longitudinally regulate, issue adjusting command by substation to subordinate's actuating station;
As U2 < 352kV, when our station regulation measure is used up, transmitting order to lower levels controls the highest actuating station of sensitivity and regulates SVC/SVG, issues additional its capacitive reactive power compensation capacity, be limited, until U2 is at control reference voltage with the constraint of actuating station voltage and SVC/SVG capacity; If actuating station SVC/SVG pondage is used up and U2 < 352kV, the actuating station regulating wind power field that then transmitting order to lower levels control sensitivity is the highest is idle exerts oneself, be limited, until U2 is at control reference voltage with the constraint of actuating station voltage, the constraint of blower fan set end voltage and the blower fan Reactive-power control limit; If wind energy turbine set is idle, pondage of exerting oneself is used up and U2 < 352kV, then transmitting order to lower levels controls sensitivity time high actuating station and regulates; So regulate actuating station successively, until U2 till control reference voltage according to control sensitivity order from high to low;
As U2 > 360kV, when our station regulation measure is used up, transmitting order to lower levels controls the highest actuating station of sensitivity and regulates SVC/SVG, issues additional its inductive reactive power compensation capacity, be limited, until U2 is at control reference voltage with the constraint of actuating station voltage and SVC/SVG capacity; If actuating station SVC/SVG pondage is used up and U2 > 360kV, the actuating station regulating wind power field that then transmitting order to lower levels control sensitivity is the highest is idle exerts oneself, be limited, until U2 is at control reference voltage with the constraint of actuating station voltage, the constraint of blower fan set end voltage and the blower fan Reactive-power control limit; If wind energy turbine set is idle, pondage of exerting oneself is used up and U2 > 360kV, then transmitting order to lower levels controls sensitivity time high actuating station and regulates; So regulate actuating station successively, until U2 till control reference voltage according to control sensitivity order from high to low.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571820A (en) * | 2019-09-27 | 2019-12-13 | 贺辉 | Joint voltage regulation control method for multiple reactive compensation devices of transformer substation |
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| JP2004104865A (en) * | 2002-09-05 | 2004-04-02 | Toshiba Corp | Control method for stationary reactive power compensator |
| CN103208803A (en) * | 2013-04-18 | 2013-07-17 | 国家电网公司 | Reactive voltage optimal control method for wind electricity and photo-electricity integrated grid connection |
| CN103259267A (en) * | 2013-05-17 | 2013-08-21 | 华北电力大学 | Mold splitting type voltage control method for wind power plant cluster |
| KR20140078230A (en) * | 2012-12-17 | 2014-06-25 | 대우조선해양 주식회사 | Method for compensating reactive power of onshore wind power generator in low voltage ride through of the power grid |
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- 2014-10-10 CN CN201410530196.5A patent/CN104348164B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004104865A (en) * | 2002-09-05 | 2004-04-02 | Toshiba Corp | Control method for stationary reactive power compensator |
| KR20140078230A (en) * | 2012-12-17 | 2014-06-25 | 대우조선해양 주식회사 | Method for compensating reactive power of onshore wind power generator in low voltage ride through of the power grid |
| CN103208803A (en) * | 2013-04-18 | 2013-07-17 | 国家电网公司 | Reactive voltage optimal control method for wind electricity and photo-electricity integrated grid connection |
| CN103259267A (en) * | 2013-05-17 | 2013-08-21 | 华北电力大学 | Mold splitting type voltage control method for wind power plant cluster |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571820A (en) * | 2019-09-27 | 2019-12-13 | 贺辉 | Joint voltage regulation control method for multiple reactive compensation devices of transformer substation |
| CN110571820B (en) * | 2019-09-27 | 2023-03-21 | 贺辉 | Joint voltage regulation control method for multiple reactive compensation devices of transformer substation |
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