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Wen-Tai Li
Singapore University of Technology and Design
Smart gridCascading failureEnergy consumptionComputer scienceEnergy management
27Publications
9H-index
250Citations
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Publications 23
Newest
#1Wen-Tai Li (SUTD: Singapore University of Technology and Design)H-Index: 9
#2Wayes Tushar (UQ: University of Queensland)H-Index: 16
Last. Kwee Tiang Chew (Khoo Teck Puat Hospital)H-Index: 1
view all 6 authors...
Abstract This paper studies a mechanism to investigate and to improve the energyefficiency of a solar water heating system (SWH) in a hospital building located in Singapore. We utilize the data collected from Internet-of-Things (IoT) to gain information on different environmental and operational aspects of the considered system, that determine opportunities for improving the efficiency of various sub-systems of the SWH, and develop control strategies for efficient operation of the overall system...
Source
#1Yuren Zhou (SUTD: Singapore University of Technology and Design)H-Index: 2
#1Yuren Zhou (SUTD: Singapore University of Technology and Design)H-Index: 5
Last. Yeong Ming Keow (Building and Construction Authority)H-Index: 1
view all 5 authors...
Abstract Air conditioning (AC) accounts for a critical portion of the global energy consumption. To improve its energy performance, it is important to fairly benchmark its energy performance and provide the evaluation feedback to users. However, this task has not been well tackled in the residential sector. In this paper, we propose a data-driven approach to fairly benchmark the AC energy performance of residential rooms. First, regression model is built for each benchmarked room so that its pow...
4 CitationsSource
#1Wen-Tai Li (SUTD: Singapore University of Technology and Design)H-Index: 9
#2Sai Ram Gubba (IIT BBS: Indian Institute of Technology Bhubaneswar)H-Index: 3
Last. Chao-Kai Wen (NSYSU: National Sun Yat-sen University)H-Index: 22
view all 8 authors...
Effective control of air conditioning systems (ACs) has the potential of significant electricity savings and demand response management for an entire power system. In this context, this paper demonstrates some key experimental results on controlling the electricity consumption of ACs. In particular, the degree to which energy can be throttled for energy management purposes without affecting the end user's comfort level is described. The testbed was set up in a residential building, in which the ...
7 CitationsSource
#1Hwei-Ming Chung (SUTD: Singapore University of Technology and Design)H-Index: 2
#2Wen-Tai Li (SUTD: Singapore University of Technology and Design)H-Index: 9
Last. Chao-Kai Wen (NSYSU: National Sun Yat-sen University)H-Index: 22
view all 6 authors...
Malicious attacks in the power system can eventually result in a large-scale cascade failure if not rectified in a timely manner. These attacks, which are traditionally classified into physical and cyber attacks , can be avoided by using the latest advanced detection mechanisms. However, a new threat called cyber-physical attacks jointly targets both the physical and cyber layers of the system to interfere with the operations of the power grid is more malicious than traditional attacks. In this ...
3 CitationsSource
#1Hwei-Ming Chung (NSYSU: National Sun Yat-sen University)H-Index: 2
#2Wen-Tai Li (SUTD: Singapore University of Technology and Design)H-Index: 9
Last. Noel Crespi (IMT: Institut Mines-Télécom)H-Index: 22
view all 5 authors...
This paper investigates the fee scheduling problem of electric vehicles (EVs) at the micro-grid scale. This problem contains a set of charging stations controlled by a central aggregator. One of the main stakeholders is the operator of the charging stations, who is motivated to minimize the cost incurred by the charging stations, while the other major stakeholders are vehicle owners who are mostly interested in user convenience, as they want their EVs to be fully charged as soon as possible. A b...
18 CitationsSource
#1Wen-Tai Li (SUTD: Singapore University of Technology and Design)H-Index: 9
#2Naveed Ul Hassan (LUMS: Lahore University of Management Sciences)H-Index: 19
Last. Yeong Ming Keow (Building and Construction Authority)H-Index: 1
view all 5 authors...
In this paper we focus on a practical application of data driven process monitoring for performance evaluation and anomaly detection in the operation of air source heat pumps (ASHPs). At our test site, which is a hospital building in Singapore, we install sensors to monitor the operation of a hot water heating system (10 years old) comprising of 5 ASHPs operating according to a pre-defined switching algorithm to balance their workload. We collect data for 6 consecutive months. With the help of t...
Source
#1Wen-Tai LiH-Index: 9
#2Wayes TusharH-Index: 16
Last. Stewart TaiH-Index: 1
view all 5 authors...
This paper studies the performance of a commercial solar water heating system (SWH) in Singapore. The objective is to perform a comprehensive audit of the selected SWH in order to understand the efficiency of various subsystems, identify the rationales behind the energy inefficiency within the SWH, and then develop control strategies to improve the energy efficiency of the SWH. To do so, first, we deploy a monitoring system using Internet of Things (IoT) to collect a large volume data of water f...
Source
#1Wayes Tushar (UQ: University of Queensland)H-Index: 16
#2Nipun WijerathneH-Index: 4
Last. Kristin L. Wood (NUS: National University of Singapore)H-Index: 38
view all 7 authors...
Buildings consume 60% of global electricity. However, current building management systems (BMSs) are highly expensive and difficult to justify for small- to medium-sized buildings. The Internet of Things (IoT), which can collect and monitor a large amount of data on different aspects of a building and feed the data to the BMS's processor, provides a new opportunity to integrate intelligence into the BMS for monitoring and managing a building's energy consumption to reduce costs. Although an exte...
6 CitationsSource
#1Wayes TusharH-Index: 16
#2Nipun WijerathneH-Index: 4
Last. Kristin L. WoodH-Index: 38
view all 7 authors...
Buildings consume 60% of global electricity. However, current building management systems (BMSs) are highly expensive and difficult to justify for small to medium-sized buildings. As such, the Internet of Things (IoT), which can monitor and collect a large amount of data on different contexts of a building and feed the data to the processor of the BMS, provides a new opportunity to integrate intelligence into the BMS to monitor and manage the energy consumption of the building in a cost-effectiv...
3 Citations
#1Wen-Tai Li (SUTD: Singapore University of Technology and Design)H-Index: 9
#2Kannan Thirugnanam (SUTD: Singapore University of Technology and Design)H-Index: 8
Last. Stewart Tai (Khoo Teck Puat Hospital)H-Index: 1
view all 6 authors...
Solar water heating (SWH) systems are well known and effective structures that transfer solar energy into thermal energy with hot water as the storage. The efficiency of an SWH system is mainly based on well-designed solar collectors and proper operation mechanisms. Although the most existing literature has focused on the efficiency enhancement of solar collectors, limited studies are devoted to improve the operating mechanism. As such, this paper studies the control mechanisms of the SWH system...
3 CitationsSource
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