KR20150122851A - Prediction based Control Apparatus and Method for Combined Generation of Wind Power and Wave Power - Google Patents

Prediction based Control Apparatus and Method for Combined Generation of Wind Power and Wave Power Download PDF

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KR20150122851A
KR20150122851A KR1020140048707A KR20140048707A KR20150122851A KR 20150122851 A KR20150122851 A KR 20150122851A KR 1020140048707 A KR1020140048707 A KR 1020140048707A KR 20140048707 A KR20140048707 A KR 20140048707A KR 20150122851 A KR20150122851 A KR 20150122851A
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wind
state
wave
combined
power
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KR1020140048707A
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Korean (ko)
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함경선
김태형
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전자부품연구원
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Publication of KR20150122851A publication Critical patent/KR20150122851A/en

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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
    • H02J3/004—Generation forecast, e.g. methods or systems for forecasting future energy generation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B15/00—Controlling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/008—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with water energy converters, e.g. a water turbine
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
    • 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
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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

Abstract

Provided are a prediction based control apparatus and method in the combined generation of wind power and wave power. The prediction based control method according to the embodiment of the present invention monitors a current state of the combined generation of the wind power and the wave power, predicts a future state for an environment situation, and controls the combined generation of the wind power and the wave power based on the current state and the future state. Thereby, the control is performed to quickly approach a target value by adding the prediction based feed forward control to a feedback control.

Description

풍력-파력 복합 발전에서의 예측 기반 제어 장치 및 방법{Prediction based Control Apparatus and Method for Combined Generation of Wind Power and Wave Power}[0001] Prediction based Control Apparatus and Method for Combined Generation of Wind Power and Wave Power [

본 발명은 예측 기반 제어 장치 및 방법에 관한 것으로, 더욱 상세하게는 풍력-파력 복합 발전에서의 예측 기반 제어 장치 및 방법에 관한 것이다.
The present invention relates to a prediction-based control apparatus and method, and more particularly, to a prediction-based control apparatus and method in a combined wind-power combined cycle power generation.

기계적 관점에서의 발전기 구동은 다소 시간이 걸리고 목표 발전 출력값까지 도달하는 동안 감시 정보(환경 변수)는 변경되고 새로운 설정값이 필요해진다. 목표 출력값까지 도달하는 천이시간(Transition Time) 동안 입력이 되는 환경 변수의 변동으로 인해 천이시간 이전 설정값에 기반한 예상 출력값과 천이시간 이후의 실제값 간의 차이가 발생된다.From the mechanical point of view, the operation of the generator takes some time, and the monitoring information (environment variable) is changed and a new setting value is required while reaching the target generation output value. The difference between the expected output value based on the set value before the transition time and the actual value after the transition time occurs due to the variation of the input environmental variable during the transition time that reaches the target output value.

실제값 간의 차이를 줄이고자 피드백 제어를 이용하고는 있으나 현재 감시 정보만을 반영하여 목표값에 추종하게 하는 한계를 지니고 있다.Although feedback control is used to reduce the difference between the actual values, it has a limit to follow the target value by reflecting only the current monitoring information.

이에, 천이시간 동안 변하는 환경변수에 대응하여 목표값의 정확도를 높이기 위한 방안의 모색이 요청된다.
Accordingly, a search for a method for increasing the accuracy of the target value in response to the environmental variable that is changed during the transition time is requested.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은, 천이시간 동안 변하는 환경변수에 대응하여 목표값의 정확도를 높일 수 있는 풍력-파력 복합 발전에서의 예측 기반 제어 장치 및 방법을 제공함에 있다.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a prediction-based control apparatus and method in a wind turbine-wave combined-cycle power generation system capable of increasing the accuracy of a target value in response to environmental variables varying during transition time, Method.

상기 목적을 달성하기 위한 본 발명의 일 실시예에 따른, 풍력-파력 복합 발전 제어 방법은, 풍력-파력 복합 발전 시스템의 현재 상태를 감시하는 단계; 환경 상황에 대한 미래 상태를 예측하는 단계; 및 상기 현재 상태 및 상기 미래 상태를 기반으로, 상기 풍력-파력 복합 발전 시스템을 제어하는 단계;를 포함한다.According to an aspect of the present invention, there is provided a method for controlling a wind power combined cycle power generation system including monitoring a current state of a wind power combined cycle power generation system, Predicting a future state of the environmental situation; And controlling the wind-coupled combined power generation system based on the current state and the future state.

그리고, 상기 제어 단계는, 상기 현재 상태는 피드백 제어로, 상기 미래 상태는 피드 포워드 제어로 반영할 수 있다.The control step may reflect the current state as feedback control and the future state as feedforward control.

또한, 상기 미래 상태는, 바람 상태와 파랑 상태 간의 상관 관계 및 바람 상태로 부터 예측한 파랑의 예측 상태일 수 있다.
Further, the future state may be a correlation between the wind state and the wave state, and a predicted wave state predicted from the wind state.

이상 설명한 바와 같이, 본 발명의 실시예들에 따르면, 피드백 제어에 예측 기반의 피드 포워드 제어를 더하여 목표값에 더 빠르게 근접할 수 있도록 제어가 가능해진다.As described above, according to the embodiments of the present invention, it is possible to control the feed-forward control to be closer to the target value by adding the feed-forward control based on prediction to the feedback control.

또한, 목표값과 실제값의 차이를 빠르게 줄여 정확한 발전 공급량을 계통에 제공하여 계통 안정성 확보에 기여할 수 있다.
In addition, the difference between the target value and the actual value can be rapidly reduced, and the accurate generation supply amount can be provided to the system, contributing to securing the system stability.

도 1은 본 발명의 일 실시예에 따른 풍력-파력 복합 발전 제어 시스템의 블럭도, 그리고,
도 2는 본 발명의 다른 실시예에 따른 풍력-파력 복합 발전 제어 방법의 설명에 제공되는 흐름도이다.FIG. 1 is a block diagram of a combined wind-and-wave power generation control system according to an embodiment of the present invention,
FIG. 2 is a flowchart illustrating a method for controlling combined-cycle wind power generation according to another embodiment of the present invention.

이하에서는 도면을 참조하여 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to the drawings.

도 1은 본 발명의 일 실시예에 따른 풍력-파력 복합 발전 제어 시스템의 블럭도이다. 도 1에서는 이해와 설명의 편의를 위해 제어 대상인 풍력-파력 복합 발전 시스템(10)을 더 도시하였다.FIG. 1 is a block diagram of a combined power generation control system for a wind power and a wave according to an embodiment of the present invention. In FIG. 1, a wind turbine-wave hybrid power generation system 10 to be controlled is further shown for the sake of understanding and explanation.

본 발명의 실시예에 따른 풍력-파력 복합 발전 제어 시스템(100)은, 도 1에 도시된 바와 같이, 제어부(110), 현재 상태 감시부(120) 및 미래 상태 예측부(130)를 포함한다.1, the system 100 includes a controller 110, a current state monitoring unit 120, and a future state predicting unit 130, as shown in FIG. 1 .

제어부(110)는 풍력-파력 복합 발전 시스템(10)을 제어하는, 풍력-파력 복합 발전 제어 시스템(100)의 핵심 구성이다. 제어부(110)는 현재 상태 기반의 피드백 제어와 미래 상태 기반의 피드포워드 제어를 병행한다.The control unit 110 is a core configuration of the wind-coupled combined-wave power generation control system 100 that controls the wind-coupled combined-power generation system 10. The control unit 110 concurrently performs a current state based feedback control and a future state based feed forward control.

현재 상태 감시부(120)는 풍력-파력 복합 발전 시스템(10)의 출력을 모니터링하여, 풍력-파력 복합 발전 시스템(10)의 현재 상태를 감시한다.The current state monitoring unit 120 monitors the current state of the combined wind power and wave power generation system 10 by monitoring the output of the combined wind power and power system 10.

미래 상태 예측부(130)는 풍력-파력 복합 발전 시스템(10)의 환경 상황에 대한 미래 상태를 예측한다. 구체적으로, 미래 상태 예측부(130)는 바람-파랑 상관 관계를 바탕으로 바람 상태로부터 예측한 파랑 상태일 수 있다.The future state predicting unit 130 predicts the future state of the environmental condition of the wind-coupled combined power generation system 10. In detail, the future state predicting unit 130 may be a predicted wave state from the wind state based on the wind-wave correlation.

구체적으로, 과거 바람 상태와 파랑 상태를 시간 순으로 매칭하여 상관관계를 생성하면, 현재의 바람 상태를 측정하여 상관관계로부터 파랑 상태를 예측할 수 있는 것이다.Specifically, if the past wind condition and the wave condition are matched in time order to generate a correlation, the current wind condition can be measured and the wave condition can be predicted from the correlation.

풍속(바람의 속도)가 파속(파랑의 속도) 보다 빠르기 때문에, 즉, 바람이 파랑 보다 풍력-파력 복합 발전 제어 시스템(100)에 이른 시간에 도달하기 때문에, 예측이 가능한 것이다.Prediction is possible because the wind speed (wind speed) is faster than the wave speed (blue speed), that is, the wind reaches the wind power-wave combined power generation control system 100 earlier than the wave.

이에, 제어부(110)는, 현재 상태 감시부(120)로부터 인가되는 현재 상태를 기반으로 풍력-파력 복합 발전 시스템(10)을 피드백 제어함과 동시에, 미래 상태 예측부(130)로부터 인가되는 미래 상태를 기반으로 풍력-파력 복합 발전 시스템(10)을 피드포워드 제어하게 된다.The controller 110 controls the wind turbine-wave hybrid electric power generation system 10 based on the current state applied from the current state monitoring unit 120 and controls the future state predicted by the future state predictor 130, And feed-forward control of the combined wind-power combined power generation system 10 based on the state of the wind power.

현재 상태에 대한 실시간 감시를 기반으로 피드백 제어만 수행하는 경우, 대형 기계 설비에서 발생되는 긴 천이시간이 문제되고 있어, 본 발명의 실시예에서는, 천이시간 동안 변화하는 환경 변수에 대응하기 위해 환경 상황의 미래 상태 예측을 기반으로 피드포워드 제어하는 것을 추가하였다.In the case of performing only the feedback control based on the real-time monitoring of the current state, there is a problem of a long transition time occurring in a large-sized machine. In the embodiment of the present invention, Based feedforward control based on the prediction of the future state of the vehicle.

도 1에 도시된 풍력-파력 복합 발전 제어 시스템(100)에 의한 풍력-파력 복합 발전 시스템(10)의 제어 과정에 대해, 이하에서 도 2를 참조하여 상세히 설명한다.The control process of the wind-coupled combined-wave power generation system 10 by the wind-combined combined power generation control system 100 shown in FIG. 1 will be described in detail with reference to FIG.

도 2는 본 발명의 다른 실시예에 따른 풍력-파력 복합 발전 제어 방법의 설명에 제공되는 흐름도이다.FIG. 2 is a flowchart illustrating a method for controlling combined-cycle wind power generation according to another embodiment of the present invention.

도 2에 도시된 바와 같이, 현재 상태 감시부(120)는 풍력-파력 복합 발전 시스템(10)의 출력을 모니터링하여, 풍력-파력 복합 발전 시스템(10)의 현재 상태를 감시한다(S210).2, the current state monitoring unit 120 monitors the current state of the wind-coupled combined-power generation system 10 by monitoring the output of the wind-coupled combined-power generating system 10 (S210).

또한, 미래 상태 예측부(130)는 풍력-파력 복합 발전 시스템(10)의 환경 상황에 대한 미래 상태를 예측한다(S220).In addition, the future state predicting unit 130 predicts the future state of the environmental condition of the wind-coupled combined power generation system 10 (S220).

S220단계에서, 미래 상태 예측부(130)는 바람-파랑 상관 관계를 바탕으로, 현재의 바람 상태를 측정하여 바람-파랑 상관관계로부터 파랑 상태를 예측할 수 있다.In step S220, the future state predicting unit 130 estimates the current state of the wind based on the wind-wave correlation and predicts the wave state from the wind-wave correlation.

하지만, 이는 예시적인 것으로, S220단계에서 이와 다른 방법 또는 다른 미래 상태를 예측하는 것이 가능하며, 이 경우에도 본 발명의 기술적 사상이 적용될 수 있음은 물론이다.However, this is an illustrative example, and it is possible to predict another method or another future state in step S220, and it goes without saying that the technical idea of the present invention can also be applied to this case.

이후, 제어부(110)는, S210단계에서 감시된 현재 상태를 기반으로 풍력-파력 복합 발전 시스템(10)을 피드백 제어함과 동시에, S220단계에서 예측된 미래 상태를 기반으로 풍력-파력 복합 발전 시스템(10)을 피드포워드 제어한다(S230).In step S210, the control unit 110 feedback-controls the combined wind-power combined power generation system 10 on the basis of the monitored current state, and at the same time, based on the predicted future state in step S220, (Step S230).

또한, 이상에서는 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였지만, 본 발명은 상술한 특정의 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진자에 의해 다양한 변형실시가 가능한 것은 물론이고, 이러한 변형실시들은 본 발명의 기술적 사상이나 전망으로부터 개별적으로 이해되어져서는 안될 것이다.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

10 : 풍력-파력 복합 발전 시스템
100 : 풍력-파력 복합 발전 제어 시스템
110 : 제어부
120 : 현재 상태 감시부
130 : 미래 상태 예측부10: Combined wind and wave power generation system
100: Combined power generation control system for wind-wave
110:
120: Current state monitoring section
130: Future state prediction unit

Claims (3)

풍력-파력 복합 발전 시스템의 현재 상태를 감시하는 단계;
환경 상황에 대한 미래 상태를 예측하는 단계;
상기 현재 상태 및 상기 미래 상태를 기반으로, 상기 풍력-파력 복합 발전 시스템을 제어하는 단계;를 포함하는 것을 특징으로 하는 풍력-파력 복합 발전 제어 방법.
Monitoring the current state of the combined wind power and power generation system;
Predicting a future state of the environmental situation;
And controlling the wind power combined cycle power generation system based on the current state and the future state.
제 1항에 있어서,
상기 제어 단계는,
상기 현재 상태는 피드백 제어로, 상기 미래 상태는 피드 포워드 제어로 반영하는 것을 특징으로 하는 풍력-파력 복합 발전 제어 방법.
The method according to claim 1,
Wherein the control step comprises:
Wherein the current state is feedback control, and the future state is reflected in feedforward control.
제 1항에 있어서,
상기 미래 상태는,
바람 상태와 파랑 상태 간의 상관 관계 및 바람 상태로부터 예측한 파랑의 예측 상태인 것을 특징으로 하는 풍력-파력 복합 발전 제어 방법.
The method according to claim 1,
The future state may include:
Wherein the predicted wave state is a predicted state of a wave predicted from a correlation between a wind state and a wave state and from a wind state.
KR1020140048707A 2014-04-23 2014-04-23 Prediction based Control Apparatus and Method for Combined Generation of Wind Power and Wave Power KR20150122851A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110230575A (en) * 2018-03-06 2019-09-13 森维安有限公司 Safeguard the method and system of a wind power plant of one group of wind power plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110230575A (en) * 2018-03-06 2019-09-13 森维安有限公司 Safeguard the method and system of a wind power plant of one group of wind power plant

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