Abstract:Wind turbine power curve modeling is an important tool in turbine performance monitoring and power forecasting. There are several statistical techniques to fit the empirical power curve of a wind turbine, which can be classified into parametric and nonparametric methods. In this paper, we study four of these methods to estimate the wind turbine power curve. Polynomial regression is studied as the benchmark parametric model, and issues associated with this technique are discussed. We then introduce the locally … Show more
“…A variety of WECS configurations can be broadly classified into four types: Type 1 (fixed-speed WECS), Type 2 (limited-variable-speed WECS), Type 3 (variable-speed with partial power electronic conversion WECS), and Type 4 (variable-speed with full power electronic conversion WECS) [33][34][35][36][37]. In recent years, an increasing number of wind farms are using the Type 4 WECS, specifically the permanent magnetic synchronous generator (PMSG) based WECS, due to its high efficiency, gearless construction, light weight quality, and self-excitation features [21,[34][35][36].…”
Section: Conventional Mppt (Maximum Power Point Tracking) Methodsmentioning
confidence: 99%
“…A typical PMSG-based WECS is shown in Figure 1, in which wind power is transformed to mechanical power via a wind turbine, and further converted to electric power through a generator [37][38][39][40]. The wind power P wind and the mechanical power P m can be expressed as…”
Maximum power point tracking (MPPT) plays an important role in increasing the efficiency of a wind energy conversion system (WECS). In this paper, three conventional MPPT methods are reviewed: power signal feedback (PSF) control, decreased torque gain (DTG) control, and adaptive torque gain (ATG) control, and their potential challenges are investigated. It is found out that the conventional MPPT method ignores the effect of wind turbine inertia and wind speed fluctuations, which lowers WECS efficiency. Accordingly, an improved adaptive torque gain (IATG) method is proposed, which customizes adaptive torque gains and enhances MPPT performances. Specifically, the IATG control considers wind farm turbulences and works out the relationship between the optimal torque gains and the wind speed characteristics, which has not been reported in the literature. The IATG control is promising, especially under the ongoing trend of building wind farms with large-scale wind turbines and at low and medium wind speed sites.
“…A variety of WECS configurations can be broadly classified into four types: Type 1 (fixed-speed WECS), Type 2 (limited-variable-speed WECS), Type 3 (variable-speed with partial power electronic conversion WECS), and Type 4 (variable-speed with full power electronic conversion WECS) [33][34][35][36][37]. In recent years, an increasing number of wind farms are using the Type 4 WECS, specifically the permanent magnetic synchronous generator (PMSG) based WECS, due to its high efficiency, gearless construction, light weight quality, and self-excitation features [21,[34][35][36].…”
Section: Conventional Mppt (Maximum Power Point Tracking) Methodsmentioning
confidence: 99%
“…A typical PMSG-based WECS is shown in Figure 1, in which wind power is transformed to mechanical power via a wind turbine, and further converted to electric power through a generator [37][38][39][40]. The wind power P wind and the mechanical power P m can be expressed as…”
Maximum power point tracking (MPPT) plays an important role in increasing the efficiency of a wind energy conversion system (WECS). In this paper, three conventional MPPT methods are reviewed: power signal feedback (PSF) control, decreased torque gain (DTG) control, and adaptive torque gain (ATG) control, and their potential challenges are investigated. It is found out that the conventional MPPT method ignores the effect of wind turbine inertia and wind speed fluctuations, which lowers WECS efficiency. Accordingly, an improved adaptive torque gain (IATG) method is proposed, which customizes adaptive torque gains and enhances MPPT performances. Specifically, the IATG control considers wind farm turbulences and works out the relationship between the optimal torque gains and the wind speed characteristics, which has not been reported in the literature. The IATG control is promising, especially under the ongoing trend of building wind farms with large-scale wind turbines and at low and medium wind speed sites.
“…In this paper, we use the LWPR (locally weighted polynomial regression) and PSR (penalized spline regression) that are efficient methods for modelling wind turbine power curves proposed in Ref. [37]. The theoretical foundations of these two models are presented below.…”
Section: Based On the Empirical Power Curvementioning
“…By analyzing the data distribution of wind speed and power attributes, the power curve is accurately modeled by machine learning method, and the abnormal points are deviated from the normal range of power curve to achieve abnormal recognition [7][8]. A multi-dimensional clustering method called WPMCLU was proposed to identify the abnormal data of wind turbine [9].…”
Abstract. In order to solve the problem that the identification method of wind turbine is not suitable for large data environment. In this paper, we propose FSIQUE. Firstly, the data space is divided into dense grid cells and sparse grid cells. Based on the FS-Tree storage structure proposed in this paper, a dense grid cell is stored and the subspace is traversed by this storage structure. Secondly, traversing the connected grid cells in the subspace to find the clusters. Finally, the maximum and minimum coverage of the cluster is calculated. According to the parameter, the clustering is divided into normal data and abnormal data to realize the anomaly recognition. The proposed method is run on the Spark platform and compared with the WPMCLU and DBSCAN methods, has the highest abnormal recognition rate and the runtime is shortest.
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