Open Access
ARTICLE
Zhenyi Feng*, Nina Mo, Shujuan Dai, Yu Xiao, Xia Cheng
Energy Engineering, DOI:10.32604/ee.2022.023471
（This article belongs to this Special Issue: Smart Grid - Issues and Solutions for Energy-disadvantaged Communities)
Abstract The construction of relevant standards for building carbon emission assessment in China has just started, and the
quantitative analysis method and evaluation system are still imperfect, which hinders the development of lowcarbon building design. Therefore, the use of intelligent energy management system is very necessary. The purpose
of this paper is to explore the design optimization of low-carbon buildings based on intelligent energy management
systems. Based on the proposed quantitative method of building carbon emission, this paper establishes the quota
theoretical system of building carbon emission analysis, and develops the quota based carbon emission calculation
software. Smart energy management system… More >
Open Access
ARTICLE
Quanchun Yan1,2,*, Chao Yuan1, Wen Gu1, Yanan Liu1, Yiming Tang1
Energy Engineering, DOI:10.32604/ee.2022.018555
（This article belongs to this Special Issue: Wind Energy Development and Utilization)
Abstract In order to solve the problems of rotor overvoltage, overcurrent and DC side voltage rise caused by grid voltage
drops, a coordinated control strategy based on symmetrical and asymmetrical low voltage ride through of rotor
side converter of the doubly-fed generator is proposed. When the power grid voltage drops symmetrically, the
generator approximate equation under steady-state conditions is no longer applicable. Considering the dynamic
process of stator current excitation, according to the change of stator flux and the depth of voltage drop, the system
can dynamically provide reactive power support for parallel nodes and suppress the rise of DC side… More >
Open Access
ARTICLE
Ying He, Yongshuang Wen*, Xuemei Huang, Leian Zhang, Rujun Song, Chang Li
Energy Engineering, DOI:10.32604/ee.2022.022223
Abstract In order to study the mechanical properties of the heterogeneous core plate of the wind turbine blade, a modeling
method of the core plate based on displacement field variables is proposed. Firstly, the wind turbine blade core plate
was modeled according to the theory of modeling heterogeneous material characteristics. Secondly, the three-point
bending finite element model of the wind turbine blade core plate was solved by the display dynamic equation
to obtain the deformation pattern and force-deformation relationship of the core plate. Finally, the three-point
bending static test was conducted to compare with the finite element analysis. The test results… More >
Open Access
ARTICLE
Lihu Cao1,2, Jinsheng Sun1,*, Bo Zhang3,*, Nu Lu4, Yuqiang Xu1
Energy Engineering, DOI:10.32604/ee.2022.022867
（This article belongs to this Special Issue: Simulation of Flow and Transport Problems in Petroleum Engineering)
Abstract In gas storage or high-pressure gas wells, annular pressure is an unavoidable threat to safe, long-term resource
production. The more complex situation, however, is multiple annular pressure, which means annular pressure
happens in not only one annulus but two or more. Such a situation brings serious challenges to the identification of
well integrity. However, few researches analyze the phenomenon of multiple annular pressure. Therefore, this paper
studies the mechanism of multi-annular pressure to provide a foundation for its prevention and diagnosis. Firstly,
the multi-annular pressure is classified according to the mechanism and field data. Then the failure mechanism and
function… More >
Login
Register
Submit a Paper
Propose a Special lssue