However, the method can only detect large ISC leakage current from ∼ 400 mA to ∼ 4 A due to the inherent low accuracy of OCV-R model [14]. Qiao et al. [15] identify the battery ISC by checking the area covered by the incremental capacity trajectories and ...
Design a charging pile electric energy verification device to improve the electric energy measurement accuracy of the charging pile. The device is mainly used for …
Molten salt tank leak detection technology is essential for the timely detection and handling of leaks. Current common thermocouple leak detection technology ca Yuhang Zuo, Zhonghua Huang, Hui Zhao, Mingrui Zhang, Fangzheng Cheng, Hua Shi, Hao Zhou; A new leakage detection method of molten salt tank and its experimental …
According to the different types of leakage current, the application of residual current protection is introduced in detail, and the corresponding leakage protection is analyzed …
Compressed air energy storage (CAES) is a promising method for storing energy on a large scale. Although CAES has been studied over a few decades and two commercial CAES power plants have been operated since the 1990s (Glendenning 1976; Mehta and Spencer 1988; Crotogino et al. 2001), more recent studies have been devoted …
Review and analysis of pipeline leak detection methods
In this paper, a simulation model of a new energy electric vehicle charging pile composed of four charging units connected in parallel is built in MATLAB …
This study introduces an enhanced method for detecting the status of charging stations, utilizing a Random Forest-based approach. Charging station status detection is addressed as a binary classification problem. We develop a model employing the Random Forest classification algorithm, which involves normalization and preprocessing of the data. The …
This article first analyzes and studies the current status of charging pile metering, and studies its existing problems and shortcomings in combination with big data …
This paper puts forward the dynamic load prediction of charging piles of energy storage electric vehicles based on time and space constraints in the Internet of …
This paper firstly introduces the testing purpose and development history of charging pile testing devices, secondly summarizes the main functions and working principles of …
The comparison of the appearance of the leaking battery and the normal battery in this paper is shown in Fig. 1, which shows that the leakage of electrolyte has caused the corrosion of the battery shell, and the internal aluminum-plastic film and current collector have been exposed to the air. ...
Accident analysis of Beijing Jimei Dahongmen 25 MWh DC solar-storage-charging integrated station project Institute of energy storage and novel electric technology, China Electric Power Technology Co., Ltd. April 2021 1. General information of the project Jimei ...
Electric vehicles are developing prosperously in recent years. Lithium-ion batteries have become the dominant energy storage device in electric vehicle application because of its advantages such as high power density and long cycle life. To ensure safe and efficient battery operations and to enable timely battery system maintenance, …
Leakage is one of the main causes of natural gas pipeline failure. Currently, many leak detection methods have been developed for pipelines, such as methods based on negative pressure wave, flow balance, leak detection cable, distributed optical fiber, and[5], [6]
Electrolyte leakage can cause serious accidents and is a major hazard for battery thermal runaway due to the flammability of electrolyte. Currently, the method for diagnosing electrolyte leakage depends greatly on sensors, but its …
To simulate the state of the battery in an energy storage cabinet and ensure experimental safety, ... Automatic system for li-ion battery packs gas leakage detection 2018 12th International Conference on Sensing Technology (ICST), IEEE, Limerick (2018), pp. 13 ...
Currently, the measurement methods for pneumatic system leakage include bubbling, ultrasonic, and pressure detection methods. These methods are sensitive to high-precision sensors, long detection times, and stable external environments. The traditional differential pressure method involves severe differential pressure …
To address the issue of multipoint leakage detection in energy transportation systems, a multiscale convolutional neural network based on kurtosis and Kullback-Leibler divergence (KKL-MSCNN) was proposed for multipoint leakage detection in energy transportation systems. Initially, the collected infrasound data undergo complete ensemble empirical …
Wellbore leakage is usually caused by defects in the cement sheath, such as cemented annular voids occupied by mud (poor cementing quality) (He et al., 2022), cement sheath fractures, and micro-annulus on cemented surfaces (Miyazaki, 2009, Watson and Bachu, 2009) (Fig. 1).).
The southwards migration of CO 2 leakage along the fault through time could be caused by a range of mechanisms, namely; (i) closure of pathways due to mineral precipitation, (ii) changes in ...
3.1 Movable Energy Storage Charging SystemAt present, fixed charging pile facilities are widely used in China, although there are many limitations, such as limited resource utilization, limited by power infrastructure, and limited number of charging facilities. Facing ...
This paper proposes an unsupervised abnormal power consumption mode detection, analyzes the characteristics of the electricity consumption behavior of the …
Aiming at short-term high charging power, low load rate and other problems in the fast charging station for pure electric city buses, two kinds of energy storage (ES) configuration are considered. One is to configure distributed energy storage system (ESS) for each charging pile. Second is to configure centralized ESS for the entire charging station. …
The hydrogen storage tank model considering thermal radiation effects is established. • A data-driven fault detection method is used to detect trace hydrogen leakage. • Linear discriminant analysis was used to …
With the popularization of new energy electric vehicles (EVs), the recommendation algorithm is widely used in the relatively new field of charge piles. At the same time, the construction of charging infrastructure is facing increasing demand and more severe challenges. With the ubiquity of Internet of vehicles (IoVs), inter-vehicle …
With the lack of fossil energy and the gradual accentuation of ecological and environmental problems, new energy generation will gradually occupy a dominant position in China''s energy structure, and electric vehicles, mainly new energy, will be vigorously promoted. With the popularity of charging piles, the function and detection accuracy, and …
The receiving space provides storage space for the leaking gas, and the size of the space determines the leakage rate and the amount of leakage. (3) The tightness performance of gas storage salt caverns needs to be evaluated in relation to permeation paths and pore pressure gradients.
As the power supply source for electric vehicles, charging piles have caused frequent safety accidents due to electric leakage in recent years, which has attracted high attention from the society. The electricity risks of charging piles will directly affect the sales and promotion of electric vehicles. According to the different types of leakage current, the …