Abstract
<abstract> <p>Power shortage is a severe problem in developing countries that are rolling to blackout, but today smart grids have the scope to avoid entire blackouts by transforming them into brownouts. A brownout is an under-voltage condition where the AC supply drops below the nominal value (120 V or 220 V) by about 10%. In a power system network, power shortages or disturbances can occur at any time, and the reliability margin analysis is essential to maintain the stability of the system. Transmission reliability margin (TRM) is a margin that keeps the network secure during any occurrence of disturbance. This paper presents a new approach to compute TRM in the case of brownout. The detailed assessment of TRM largely depends on the estimation of the available transfer power (ATC). In this method, the ATC of the system is calculated considering the effect of alternating current (AC) and direct current (DC) reactive power (Q) flow (DCQF). The entire procedure is carried out for the multi-transaction IEEE-6 bus system, and the results are compared to the current efficiency justification method. Numerical results demonstrate that the proposed technique is an effective alternative for calculating the TRM and is valid compared to the existing technique.</p> </abstract>
Highlights
Even though when significant uncertainty occurs during power transfer, the power network system needs to keep secure
According to the North American Electric Reliability Council (NERC), Transmission reliability margin (TRM) is the amount of transmission capability which ensures the safety of the network of the power system under any reasonable range of disturbances in the system operating components
DC Q flow (DCQF) load flow In Table 6, available transfer capability (ATC) results are presented for the base case, load bus-5, and generator bus-3; these results show that ATC values are decreased with the decrease in voltage magnitude
Summary
Even though when significant uncertainty occurs during power transfer, the power network system needs to keep secure For this reason, it is crucial in calculating transmission reliability margin (TRM) to quantify the intensively significant uncertainty precisely. According to the North American Electric Reliability Council (NERC), TRM is the amount of transmission capability which ensures the safety of the network of the power system under any reasonable range of disturbances in the system operating components. The change in any bus voltage magnitude for a transaction between a seller bus and a buyer bus is known as voltage distribution factors (VDFs) These factors aid in calculating ATC; fundamentally, in this work, ATC is determined for voltage magnitudes. Brownout causes by huge energy demand, which is above the capacity When this happens, the flow of electricity is reduced in certain areas to prevent a blackout. As a crucial element in operational and planning phases in the contemporary power system, the reliability evaluation of composite power
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