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The conventional protection scheme, including sequential components and wide differential area protection, may not be suitable for the FREEDM system mostly because of the unique characteristics of this new system. In this paper, the characteristics of FREEDM system are analyzed and a novel protection strategy, which makes full use of the system characteristics, is presented. This protection scheme...
A Real Time Power Monitoring (RTPM) System is proposed in which end-use detailed energy consumption data is provided for each load level. The data will be integrated with a BIM (Building Information Modeling) Model to create a Realtime on-line electronic BIM Model. This paper describes the RTPM system and the process leading to its creation. The basic components of the proposed system were designed...
Power systems' operators have the task of maintaining the balance between the demand and generation of electric power. Much research and attention is being given to find more environmental friendly sources of power generation. Naturally, more power is required when the load is at its peak value, and this tends to be when the most non environmentally friendly sources of power generation are used. This...
The microgrid concept is not a new one; however, implementing it and integrating it to a legacy grid is a challenge that engineers are thriving to solve. This challenge is due to many reasons including economic and technology [4]. The survivability of such a system in terms of its reliability and robustness to faults are key points to explore in the microgrid. The FREEDMources. A Green Hub was designed...
Utilizing aggregated electric loads as system resources has several benefits. It can provide ancillary services for power systems. At the same time, it can provide demand management for electricity customers. It is necessary to develop integrated control strategies for aggregated electric loads. Most domesticwater heaters (DWHs) are electric and they consume much power especially in winter. DWHs represent...
This paper presents a domestic hot water heater model to be used in a demand side management program. Water heater loads are extracted from household load data, and then used do develop household water usage data. The model incorporates both the thermal losses and the water used to determine the temperature of the water in the tank. The model will be used in the future to develop intelligent control...
This paper assesses the transient operation of a 33 kV distribution network in islanded operation consisting of different type and size of loads and distributed (mainly renewable) generators. The generators considered include synchronous generator representing the combined heat and power unit, fixed speed induction generator, doubly fed induction generator and power electronic connected photovoltaic...
Conventional methods of load shedding are too slow, do not effectively calculate the correct amount of load to shed and lack in operating in a coordinated way. This results in either unnecessary or insufficient load reduction. A new technique should be applied that will be fast and optimal relying on slow communication in order for the distribution network to maintain stability and to improve the...
Load instructions usually have long execution latency in a deep processor pipeline, and have significant impact on overall performance. Therefore, how to hide the load latency becomes a serious problem in processor design. The latency of memory load can be separated into two parts: cache-miss latency and load-to-use latency. Previous work which tried to hide the load latency in a deep processor pipeline...
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