Power flow management analysis using compensating techniques for managing congestion within electrical energy network

Abstract

In a deregulated electrical energy system with increasing penetration of renewable energy sources, rescheduling of the power generation(s) is required, and it is going to congest some of the power lines in the complex power system. The power flow can be managed using different compensating techniques. This study presents power flow management analysis using selected compensation technologies (i.e. series, shunt, series-shunt, and D-FACTS) for congestion alleviation. In this work, an IEEE 6 bus distributed network is used and the mentioned compensating techniques are evaluated for congestion management considering a case of power line outage. It is observed some of the power lines are overloaded by 10%. To reduce the overloading; the series, shunt, series-shunt, D-FACTS compensation technologies are used and found that they can reduce the active power overloading of the congested line by 27%, 9.5%, 12%, and 27% respectively. But the apparent power congestions can be reduced using series and D-FACTS techniques by 14% compare to shunt and series-shunt techniques. It is affirmed that the D-FACTS can effectively manage the power flow compare to other compensation techniques and can offer other benefits (e.g. voltage quality, line power flows, injection of power at the buses, reduction in power losses, etc.).

The impact of renewable energy sources on the overload of high voltage lines – power flow tracking versus direct current method

“…-sensitivity analyses in the power industry [2][3][4][5][6], -redispatching the power of sources [7][8][9][10][11], -optimisation of power distribution in generating sources [7,[12][13][14], -optimal change of network topology (reconfiguration) [15][16][17][18], -application of the power flow tracking method [7,19], -application of methods based on artificial intelligence [14,20,21], -use of impedance coefficients [15,19], -use of phase shifters to control active power flows [13,21,22], -intuitive or "manual" determination of sensitivity of power flows in lines [19,23]. Generally, the works found in the literature mainly concern either the optimisation or tracking of power flows or the search for appropriate coefficients, and less frequently, reconfiguration.…”

Determining Optimal SVC Location for Voltage Stability Using Multi-Criteria Decision Making Based Solution: Analytic Hierarchy Process (AHP) Approach

“…IEEE 14-bus and 30 bus test systems don't have line limits. Line and transformer limits have been proposed by the authors in several articles [64]- [66]. In this study, the line limits suggested in [65] were used and congestion was created in the lines for the simulation purposes.…”