Wei Liu

Mr. Wei Liu

orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 June 2021 in International Journal of Electrical Power & Energy Systems
Verified
Journal Article
Closed access
YXyuanxing xia
yuanxing xia
QXQingshan Xu
Qingshan Xu
HQHaiya Qian
Haiya Qian
WLWei Liu
Wei Liu
CSChunjun Sun
Chunjun Sun

10 September 2018 in Applied Sciences
Verified
Journal Article
Open access
PDF file
WLWei Liu
Wei Liu
ZDZhenhai Dou
Zhenhai Dou
WWWeiguo Wang
Weiguo Wang
YLYueyu Liu
Yueyu Liu
HZHao Zou
Hao Zou
SHShoujun Hou
Shoujun Hou
As objects of load prediction are becoming increasingly diversified and complicated, it is extremely important to improve the accuracy of load forecasting under complex systems. When using the group method of data handling (GMDH), it is easy for the load forecasting to suffer from overfitting and be unable to deal with multicollinearity under complex systems. To solve this problem, this paper proposes a GMDH algorithm based on elastic net regression, that is, group method of data handling based on elastic net (EN-GMDH), as a short-term load forecasting model. The algorithm uses an elastic net to compress and punish the coefficients of the Kolmogorov–Gabor (K–G) polynomial and select variables. Meanwhile, based on the difference degree of historical data, this paper carries out variable weight processing on the input data of load forecasting, so as to solve the impact brought by the abrupt change of load law. Ten characteristic variables, including meteorological factors, meteorological accumulation factors, and holiday factors, are taken as input variables. Then, EN-GMDH is used to establish the relationship between the characteristic variables and the load, and a short-term load forecasting model is established. The results demonstrate that, compared with other algorithms, the evaluation index of EN-GMDH is significantly better than that of the rest algorithm models in short-term load forecasting, and the accuracy of prediction is obviously improved.

10 October 2024 in Energies
Verified
Journal Article
Open access
PDF file
WLWei Liu
Wei Liu
Qingshan XuQingshan Xu
Qingshan Xu
MQMinglei Qin
Minglei Qin
YYYongbiao Yang
Yongbiao Yang
Extreme weather, such as rainstorms, often triggers faults in the distribution network, and power outages occur. Some serious faults cannot be repaired by one team alone and may require equipment replacement or engineering construction crews to work together. Rainstorms can also lead to road damage or severe waterlogging, making some road sections impassable. Based on this, this paper first establishes a road network model to describe the dynamic changes in access performance and road damage. It provides the shortest time-consuming route suggestions for the traffic access of mobile class resources in the post-disaster recovery task of power distribution networks. Then, the model proposes a joint repair model with general repair crew (GRC) and senior repair crew (SRC) collaboration. Different types of faults match different functions of repair crews (RCs). Finally, the proposed scheme is simulated and analyzed in a road network and power grid extreme post-disaster recovery model, including a mobile energy storage system (MESS) and distributed power sources. The simulation finds that considering road damage and severe failures produces a significant difference in the progress and load loss of the recovery task. The model proposed in this paper is more suitable for the actual scenario requirements, and the simulation results and loss assessment obtained are more accurate and informative.

14 November 2022 in Energy Reports
Verified
Journal Article
Open access
WLWei Liu
Wei Liu
YLYueyu Liu
Yueyu Liu
YYYongbiao Yang
Yongbiao Yang
QXQingshan Xu
Qingshan Xu
FDFangxu Dong
Fangxu Dong

25 February 2022
Verified
Conference Paper
Closed access
CWChaoliang Wang
Chaoliang Wang
WLWei Liu
Wei Liu
YDYabin Du
Yabin Du
Bin LiBin Li
Bin Li
Aiming at the characteristics of temperature control equipment with good energy saving and demand response potential, a temperature control equipment energy consumption control system based on the cyber physical system (CPS) architecture is proposed. Based on the two-tier architecture of a typical CPS system, the unit level realizes the dynamic information perception, standardized information modeling and control of temperature control equipment through the intelligent energy-using terminal; the system-level implements multiple information fusion and edge computing through the intelligent energy-using gateway to achieve Energy efficiency analysis, energy efficiency diagnosis and coordinated control of multiple devices for residential temperature control equipment. Relying on the proposed interactive architecture and CPS model, using the relevant information sensed by the CPS unit, at the CPS decision-making level, an optimized control strategy for temperature control equipment based on cloud model theory is proposed. The consumption has dropped significantly.