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Heat transducers are one of the basic parts of heating and cooling systems. Various types of such transducers are used in powerhouse industries. In this paper we try to study the functions of a heat-air-water transducer used in the cooling system of gas-turbine. As there is not enough information about the structure and components of such transducers, we have estimated the output temperature of this...
The issue of saving energy is the main incentive in almost every research. Regarding the fact that lighting systems in the buildings consume a big portion of total primary energy, proposing smart control platforms for decreasing power consumption in such systems is crucial. In this paper a new smart building lighting system is proposed. This system is designed cheap and easy to install for being widely...
This paper presents a new method of fault location in transmission lines. The method is based on analysis of reflected traveling waves from fault point. Regarding weak frequency response of conventional output of capacitive voltage transformers (CVT), the proposed method receives the travelling waves from PLC output of CVTs, which has a good frequency response for high frequency travelling waves....
In this paper the performance of a grid connected synchronous generator is evaluated. This is achieved by monitoring the influence of two parameters of the power system stabilizer on the synchronous machine parameters. A performance index taken into account the automatic monitoring of generator parameters is implemented. The aim is to reach an optimum operating point for the power system stabilizer...
This paper provides a concept for optimal placement of Phasor Measurement Units (PMUs) in state estimation of a power system for normal operating condition, as well as for double contingency one. State estimation has first been turned into an optimization problem in which the objective function is the Mean Square Error (MSE) in estimation process. In this paper, state estimation is studied based on...
A microgrid (MG) as a main component of the smart grid integrates Distributed Generation System (DGS) to supply power of local loads. In other words, MG is a unit of integration of the DGs and loads which can operate either connected to or isolated from the main grid. Coordinated control of DGs in MGs is one of the technical difficulties. In this paper, a typical MG consisting of three DGs which are...
In this paper the optimal placement of phasor measurement units to maintain the network observability in normal mode and considering the constraint installed on some buses has been studied. In addition to providing a suitable use of phasor measurement units, buses with high sensitivity have been considered, and optimal placement of the units considering the direct observability sensitive bus, observability...
Demand Side Management (DSM) can be a solution for providing the energy at peak times. In this paper an effective DSM is proposed that not only reduces the peak costs, but also is practicably possible in industrial and residential areas, which is performed by using Direct Load Control (DLC). According to use different strategies of DLC use, different results are found that can be either useful for...
The cable dielectric break down or the cable splices flaw usually result in high arc voltages and cable incipient faults. These types of faults are repetitious and can lead to permanent cable fault if they are not rapidly removed. Since the incipient faults occur in a very short period of time (often less than a cycle), they cannot be detected by means of the protective relays. During an incipient...
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