Multistep Forecasting for Short-Term Wind Speed Using an Optimized Extreme Learning Machine Network with Decomposition-Based Signal Filtering
- Publisher:
- ASCE-AMER SOC CIVIL ENGINEERS
- Publication Type:
- Journal Article
- Citation:
- Journal of Energy Engineering, 2016, 142, (3)
- Issue Date:
- 2016-09-01
Closed Access
Filename | Description | Size | |||
---|---|---|---|---|---|
(ASCE)EY.1943-7897.0000291.pdf | Published version | 39.74 MB |
Copyright Clearance Process
- Recently Added
- In Progress
- Closed Access
This item is closed access and not available.
Since wind fluctuates with strong variation even within a short-term period, it is quite difficult to describe the characteristics of wind or to estimate the power output that will be injected into the grid. In particular, short-term wind speed forecasting, an essential support for regulatory actions and short-term load dispatching planning during the operation of wind farms, is currently regarded as one of the most difficult problems to solve. This paper contributes to multistep forecasting for short-term wind speed by developing a three-stage hybrid approach named MECE; it is a combination of the ensemble empirical model decomposition (EEMD) method, cuckoo search (CS) algorithm, and extreme learning machine (ELM) method. As the first stage of the hybrid MECE approach, a signal filtering based on a decomposition and reconstruction strategy is adopted and copied by the EEMD method, and a denoised series can be obtained. Then, the CS-optimized ELM is designed as a novel learning method to construct a single layer feed-forward neural network (SLFN); the input weights and biases are determined by the CS algorithm instead of the random initialization within the original ELM. Next, a training and forecasting stage is taken; three different strategies are adopted for multistep forecasting. The chosen data sets are half-hour wind speed observations, including 16 samples, and the simulation indicates that the proposed MECE approach performs much better than the traditional ones when addressing short-term wind speed forecasting problems.
Please use this identifier to cite or link to this item: