A Reliability Impact and Assessment of Distributed Generation Integration to Distribution System

Abstract

The main purpose of this paper is to study the reliability due to the employment of distributed generations (DG) integrated to distribution system. The system under this study is from Provincial Electricity Authority (PEA) that is a part of Thailand's distribution system. Data of geographic information systems (GIS) including the distance of distribution line and location of load that are parameter of PEA is simulated using digital simulation and electrical network calculation program (DIgSILENT) to analyze the impact of reliability with the installing DG into the distribution system. The system average interruption frequency index (SAIFI), the system average interruption duration index (SAIDI) and interruption cost are assessed as index of reliability by comparing the SAIFI, SAIDI, and interruption cost between the base case (no DG) and the case that DG connected to the distribution system. The results can be summarized by focusing on location of DG, the capacity of DG, the size of load, and the distance of load which are factors able to impact to SAIFI, SAIDI, and interruption cost.

The impact of capacity and location of multidistributed generator integrated in the distribution system on electrical line losses, reliability, and interruption cost

“…To support this assertion, comparison of DG capacity of 2 MVA with 4 MVA located on the same bus shows that the percentage change of the active power line loss in the case of DG capacity of 4 Figure 1. A simple radial system with DG connected [45]. MVA for buses 1 through 5 is slightly increased and more than in the case of DG capacity of 2 MVA.…”

“…The use of the index to indicate the average number of the power failures and power outages per year per customer enables comparisons between different systems, and a set value of the index can also be targeted. The most common customer reliability indices are [45]:…”

Reliability Analysis and Improvement of Debre Berhan Power Distribution Network by Using Fuzzy Logic Optimization Technique

“…Reliability indices are a statistical aggregation of reliability data for a well-designed set of loads, distribution system components [2,3]. The use of index to indicate the average number of times of power failure and power outage per year per one customer makes it possible to compare between different systems and can also be targeted [4]. Reliability evaluation is the ultimate goal of reliability analysis which should be answered the question like: is the system reliable enough?…”

Reliabilty and Cost Benefit Analysis of DG Integrated Distribution System

“…Yue Yuan [9] has considered the effect of DG location on the distribution system reliability. Atthapol et al have evaluated the effect of size and location of DG on distribution system reliability and also calculated the cost of interruption [10]. In the earlier works on reliability assessment of integrating DG into the system, many authors have considered mostly single DG connected to the system.…”