Conference Paper

Direct load control considering interrupted energy assessment rate in restructured power systems

Sch. of EEE, Nanyang Technol. Univ., Singapore, Singapore
DOI: 10.1109/PES.2009.5275679 Conference: Power & Energy Society General Meeting, 2009. PES '09. IEEE
Source: IEEE Xplore

ABSTRACT A direct load control (DLC) scheme of air conditioning loads (ACL), which considers the interrupted energy assessment rate (IEAR) of nodes where ACL are connected, is proposed in this paper for restructured power systems. The IEAR is utilized to determine the compensation for the discomfort of the ACL customers due to the service interruption caused by the DLC of ACL. Dynamic programming is used to determine the optimal DLC scheme of ACL under the minimum total system operating cost. The IEEE reliability test system is simulated to illustrate the proposed DLC technique of ACL.

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    ABSTRACT: Conventional power systems have been experiencing transition from centralized supply side management to decentralized supply&demand side management due to power system restructuring and addition of distributed generations (DGs) and Smart Grids (SGs) or Smart Distribution Systems (SDSs) with renewable power sources in the past two decades. Therefore load management under the new operating environment becomes more difficult than that under the conventional environment. This paper presents an Intelligent Metering/Trading/Billing System (ITMBS) and its implementation in Demand Side Load Management (DSLM) of SGs and SDSs. The ITMBS provides real time price information to customers through communication networks. Customers can adjust their demands through setting the operating time of some of the home appliances with energy storage feature such as heaters based on the real time prices to shift their consumptions and save cost. Customers can also participate in Direct Load Control (DLC) program in control center of a micro grid to shift their air condition demands through changing on and off circle based on the real time prices and weather conditions to save energy and to shift system peak load.
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