CN105790280A - Large-scale wind dispensing system reactive power compensation method - Google Patents
Large-scale wind dispensing system reactive power compensation method Download PDFInfo
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- CN105790280A CN105790280A CN201410806722.6A CN201410806722A CN105790280A CN 105790280 A CN105790280 A CN 105790280A CN 201410806722 A CN201410806722 A CN 201410806722A CN 105790280 A CN105790280 A CN 105790280A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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
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- Y02E40/30—Reactive power compensation
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Abstract
The present invention provides a large-scale wind dispensing system reactive power compensation method. The method includes the steps of collecting a structure parameter of a wind farm dispensing system and a configuration parameter of a reactive power compensation apparatus of a wind farm; establishing a large-scale wind dispensing system structure model according to the structure parameter of the wind farm dispensing system and the configuration parameter of the reactive power compensation apparatus of the wind farm; determining dynamic reactive power compensation data and static reactive power compensation data under conditions of different preset wind farm outputs according to the established wind dispensing system structure model; and generating a reactive power compensation result of the large-scale wind dispensing system according to the dynamic reactive power compensation data and the static reactive power compensation data. According to the large-scale wind dispensing system reactive power compensation technology based on dynamic operation sequence optimization, problems of difficulties of reactive power compensation and voltage stability after access of the large-scale wind dispensing system in the power grid are solved, and the large-scale wind remote dispensing system is ensured to run safely and stably.
Description
Technical field
The present invention relates to power technology, be a kind of large-scale wind power transmitting system reactive-load compensation method concretely.
Background technology
The wind power resources utilization of current China comes into the stage developed rapidly, and China's Wind Power Generation be mainly characterized by large-scale wind power base, from away from load center, define wind-powered electricity generation long-distance sand transport and access the pattern of electrical network, randomness, undulatory property, intermittence and difficult prediction and uncontrollable feature is had due to wind-power electricity generation, therefore wind-power electricity generation is accessed electrical network, necessarily bring certain impact to operation of power networks.
When large-scale wind power accesses electrical network, due to reactive power characteristic etc. the factor of the undulatory property of wind-powered electricity generation and Wind turbines, the voltage stability of system has become the matter of utmost importance that wind-electricity integration must take into.When especially by long-distance sand transport, line voltage distribution there will be when wind power output changes and fluctuates widely, in some instances it may even be possible to cause system voltage unstability.Particularly China there occurs a lot of large-scale wind power off-grid accident, taking place frequently of large-scale wind power off-grid accident in recent years, needs in a hurry to carry out corresponding research, and finds counter-measure.Especially when large-scale wind power field is in electrical network end and does not have load again, voltage support is relatively weak, after system jam, may result in wind energy turbine set voltage seriously to fall, cause that a large amount of blower fan is because of low pressure off-grid, after a large amount of blower fan off-grids, owing in wind energy turbine set, reactive power compensator control strategy is perfect not, the automatic adjustment of voltage can not be carried out in time, and wind-powered electricity generation collects the reactive power compensator supporting system voltage and reactive loss input when station endogenous wind TV university is sent out still in input state, a large amount of capacitive reactive power compensation devices more than needed are still in operation of power networks, system voltage is significantly raised, and then cause a large amount of blower fan again because of high voltage off-grid.
Power system is a complicated dynamical system, the not up to standard of the inaccurate or performance of any device action behavior is all likely to cause serious consequence, even cause huge economic loss, therefore, rely only on wind-powered electricity generation and collect the capacitor of fixed capacity and the reactor at station, the service requirement under wind power output difference operating condition cannot be met, the service requirement of the various methods of operation that the reactive power compensation technology of large-scale wind power transmitting system must is fulfilled under the actual motion environment of practical power systems.
Summary of the invention
The voltage stabilization sex chromosome mosaicism of the reactive-load compensation after electrical network is accessed for solution large-scale wind power transmitting system, guarantee the safe and stable operation of the remote transmitting system of large-scale wind power, embodiments provide a kind of large-scale wind power transmitting system reactive-load compensation method, including:
Gather the configuration parameter of the reactive power compensator of wind energy turbine set transmitting system structural parameters and wind field；
Configuration parameter according to described wind energy turbine set transmitting system structural parameters and the reactive power compensator of wind field sets up large-scale wind power transmitting system structural model；
Wind-powered electricity generation transmitting system structural model according to setting up determines the dynamic passive compensation data in default different output of wind electric field situations and static reactive power compensation data；
Reactive-load compensation result according to described dynamic passive compensation data and static reactive power compensation data genaration large-scale wind power transmitting system.
The large-scale wind power transmitting system reactive power compensation technology based on dynamic operation sequential optimization that the present invention proposes, difficult point and the voltage stabilization sex chromosome mosaicism of the reactive-load compensation after large-scale wind power transmitting system access electrical network can be solved, guaranteeing the safe and stable operation of the remote transmitting system of large-scale wind power, running for Power System Safe Dispatch provides technical support.
For the above and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, it is described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of a kind of large-scale wind power transmitting system reactive-load compensation method.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As it is shown in figure 1, the invention provides a kind of large-scale wind power transmitting system reactive-load compensation method, method includes:
Step S101, gathers the configuration parameter of the reactive power compensator of wind energy turbine set transmitting system structural parameters and wind field；
Gather wind energy turbine set transmitting system structural parameters to include: wind energy turbine set wind-driven generator parameter, wind-powered electricity generation booster transformer parameter, wind energy turbine set current collection line parameter circuit value, Reactive Compensation in Wind Farm parameter, wind energy turbine set transformer model parameter and wind farm grid-connected line parameter circuit value；The configuration parameter of reactive power compensator includes: the installation site parameter of reactive power compensator, the type parameter of reactive power compensator and range of capacity parameter.
Step S102, sets up large-scale wind power transmitting system structural model according to the configuration parameter of described wind energy turbine set transmitting system structural parameters and the reactive power compensator of wind field；
It is specially and sets up wind energy turbine set wind-driven generator model module, blower fan booster transformer model, wind energy turbine set current collection circuit model, Reactive Compensation in Wind Farm model, wind energy turbine set main transformer model and wind farm grid-connected circuit model respectively according to wind energy turbine set wind-driven generator parameter, wind-powered electricity generation booster transformer parameter, wind energy turbine set current collection line parameter circuit value, Reactive Compensation in Wind Farm parameter, wind energy turbine set transformer model parameter and wind farm grid-connected line parameter circuit value.
Step S103, the wind-powered electricity generation transmitting system structural model according to setting up determines the dynamic passive compensation data in default different output of wind electric field situations and static reactive power compensation data；
In the present embodiment, according to wind-powered electricity generation transmitting system structural model, carry out the circuit effective power flow calculating that wind energy turbine set difference is exerted oneself in situation, the switching reactive compensator calculating to each point voltage and reactive loss, the quantitative Analysis of reactive power compensator configuration parameter, it is determined that dynamic passive compensation data in default different output of wind electric field situations and static reactive power compensation data.
Step S104, the reactive-load compensation result according to described dynamic passive compensation data and static reactive power compensation data genaration large-scale wind power transmitting system.
The present invention is studied by the configuration and operating scheme that large-scale wind power transmitting system wind-powered electricity generation collects the dynamic static passive compensation device at station and wind energy turbine set, the method proposing to determine the optimized operation order collecting station fixed capacity capacitor and SVG, propose wind energy turbine set difference to exert oneself each wind energy turbine set in situation, collect the defining method of the operating scheme of station reactive-load compensation equipment, propose to run the large-scale wind power transmitting system reactive power compensation technology method of sequential optimization based on sound state, solve difficult point and the voltage stabilization sex chromosome mosaicism of the reactive-load compensation after large-scale wind power transmitting system access electrical network, guarantee the safe and stable operation of the remote transmitting system of large-scale wind power, run for Power System Safe Dispatch and technical support is provided.
In specific embodiment, first qualitative or primarily determine that system mode and the installation site of reactive power compensator of wind energy turbine set transmitting system, type and range of capacity thereof are accessed in large-scale wind power field, on this basis with software for research tool, carry out exert oneself each wind energy turbine set in situation, the installation site collecting station reactive-load compensation equipment and range of capacity of wind energy turbine set difference and carry out quantitative Research of digital simulation.
By researching and proposing the method determining the optimized operation order collecting station fixed capacity capacitor and SVG above, propose wind energy turbine set difference exert oneself each wind energy turbine set in situation, collect the defining method of the operating scheme of station reactive-load compensation equipment, large-scale wind power transmitting system reactive power compensation technology based on dynamic operation sequential optimization is proposed, solve difficult point and the voltage stabilization sex chromosome mosaicism of the reactive-load compensation after large-scale wind power transmitting system access electrical network, guaranteeing the safe and stable operation of the remote transmitting system of large-scale wind power, running for Power System Safe Dispatch provides technical support.
It is as follows that this programme is embodied as step:
1, investigate the transmitting system structure situation of existing large-scale wind power field, the configuring condition of the reactive power compensator of investigation wind energy turbine set, and build large-scale wind power transmitting system structural model, specifically have: the wind energy turbine set transmitting system structural parameters according to gathering set up wind energy turbine set wind-driven generator (750kW asynchronous machine, doubly fed machine 1.5MW, direct-drive fan 2MW) model, blower fan booster transformer model (800kW--2MW), wind energy turbine set current collection circuit model (π type), Reactive Compensation in Wind Farm model is (static, dynamic SVG), wind energy turbine set main transformer model and wind farm grid-connected circuit model.
2, in the present embodiment, the directly installation site according to standard GB/T/T19963 " wind energy turbine set accesses power system technology and specifies " the actual reactive power compensator accessing situation and wind energy turbine set transmitting system of the current wind energy turbine set of qualitative investigation, whether type and range of capacity thereof be reasonable, on this basis with China's DianKeYuan " BPA " software as research tool, with the large-scale wind power transmitting system structural model built, carry out wind energy turbine set difference exert oneself in situation (as: zero exerts oneself, 10% exerts oneself, 20% exerts oneself, it is incremented by until Man Fa etc. with 10%) circuit effective power flow, the switching reactive compensator impact on each point voltage and reactive loss, the installation site of reactive power compensator, the quantitative study of type and range of capacity, obtain quantitative study data；Further the sensitivity of each point change in voltage is studied by the operation order of static passive compensation device and dynamic reactive compensation device on this basis.
3, studied by above l-G simulation test, the method determining the optimal location collecting station static passive compensation device and dynamic reactive compensation device and optimum range of capacity and optimized operation order is proposed, propose wind energy turbine set difference exert oneself each wind energy turbine set in situation, collect the defining method of the operating scheme of station reactive-load compensation equipment, final the large-scale wind power transmitting system reactive power compensation technology based on dynamic operation sequential optimization is proposed.
The large-scale wind power transmitting system reactive power compensation technology based on dynamic operation sequential optimization that the present invention proposes, difficult point and the voltage stabilization sex chromosome mosaicism of the reactive-load compensation after large-scale wind power transmitting system access electrical network can be solved, guaranteeing the safe and stable operation of the remote transmitting system of large-scale wind power, running for Power System Safe Dispatch provides technical support.
This method has built complex power system, carries out wind energy turbine set difference and exerts oneself the installation site of reactive power compensator in situation and the research of range of capacity, have studied wind energy turbine set difference and exerts oneself the switching reactive compensator impact on each point voltage in situation.The method being determined by collecting the optimized operation order of station fixed capacity capacitor and SVG, propose wind energy turbine set difference exert oneself each wind energy turbine set in situation, collect the defining method of the operating scheme of station reactive-load compensation equipment, it is proposed to based on the large-scale wind power transmitting system reactive power compensation technology of dynamic operation sequential optimization.
Applying specific embodiment in the present invention principles of the invention and embodiment are set forth, the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention.
Claims (5)
1. a large-scale wind power transmitting system reactive-load compensation method, it is characterised in that described method includes:
Gather the configuration parameter of the reactive power compensator of wind energy turbine set transmitting system structural parameters and wind field；
Configuration parameter according to described wind energy turbine set transmitting system structural parameters and the reactive power compensator of wind field sets up large-scale wind power transmitting system structural model；
Wind-powered electricity generation transmitting system structural model according to setting up determines the dynamic passive compensation data in default different output of wind electric field situations and static reactive power compensation data；
Reactive-load compensation result according to described dynamic passive compensation data and static reactive power compensation data genaration large-scale wind power transmitting system.
2. the method for claim 1, it is characterized in that, described collection wind energy turbine set transmitting system structural parameters include: wind energy turbine set wind-driven generator parameter, wind-powered electricity generation booster transformer parameter, wind energy turbine set current collection line parameter circuit value, Reactive Compensation in Wind Farm parameter, wind energy turbine set transformer model parameter and wind farm grid-connected line parameter circuit value.
3. the method for claim 1, it is characterised in that the configuration parameter of described reactive power compensator includes: the installation site parameter of reactive power compensator, the type parameter of reactive power compensator and range of capacity parameter.
4. method as claimed in claim 2, it is characterised in that the described configuration parameter according to described wind energy turbine set transmitting system structural parameters and the reactive power compensator of wind field is set up large-scale wind power transmitting system structural model and included:
Wind energy turbine set wind-driven generator model module, blower fan booster transformer model, wind energy turbine set current collection circuit model, Reactive Compensation in Wind Farm model, wind energy turbine set main transformer model and wind farm grid-connected circuit model is set up respectively according to wind energy turbine set wind-driven generator parameter, wind-powered electricity generation booster transformer parameter, wind energy turbine set current collection line parameter circuit value, Reactive Compensation in Wind Farm parameter, wind energy turbine set transformer model parameter and wind farm grid-connected line parameter circuit value.
5. the method for claim 1, it is characterised in that according to the wind-powered electricity generation transmitting system structural model set up, described determines that the dynamic passive compensation data in default different output of wind electric field situations and static reactive power compensation data include:
According to described wind-powered electricity generation transmitting system structural model, carry out the circuit effective power flow calculating that wind energy turbine set difference is exerted oneself in situation, the switching reactive compensator calculating to each point voltage and reactive loss, the quantitative Analysis of reactive power compensator configuration parameter, it is determined that dynamic passive compensation data in default different output of wind electric field situations and static reactive power compensation data.
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Application publication date: 20160720 |