Improving the Transient Stability of Nigerian 330kv Transmission Network Using Static Var Compensation Part I: The Base Study

Abstract

In this paper, the base study for improving the transient In this paper, the base study for improving the transient In this paper, the base study for improving the transient In this paper, the base study for improving the transient stability of Nigerian 330kV transmission network using stability of Nigerian 330kV transmission network using stability of Nigerian 330kV transmission network using stability of Nigerian 330kV transmission network using Static Var Compensation (SVC) is conducted with the focus of developing indices that can appropriately size and Static Var Compensation (SVC) is conducted with the focus of developing indices that can appropriately size and Static Var Compensation (SVC) is conducted with the focus of developing indices that can appropriately size and Static Var Compensation (SVC) is conducted with the focus of developing indices that can appropriately size and locate SVC within the network. The study locate SVC within the network. The study locate SVC within the network. The study locate SVC within the network. The study is performed using commercially available software is performed using commercially available software is performed using commercially available software is performed using commercially available software Dig SILENT Dig SILENT Dig SILENT Dig SILENT Power Power Power Power Factory. Factory. Factory. Factory. The overloaded lines which SVCs with SVCs with SVCs with values 124Mvar, 73Mvar, 62Mvar and 110Mvar values 124Mvar, 73Mvar, 62Mvar and 110Mvar values 124Mvar, 73Mvar, 62Mvar and 110Mvar values 124Mvar, 73Mvar, 62Mvar and 110Mvar located at Osogbo, Kaduna and Benin located at Osogbo, Kaduna and Benin located at Osogbo, Kaduna and Benin located at Osogbo, Kaduna and Benin compensated the network compensated the network compensated the network compensated the network and increase the CCTs and increase the CCTs and increase the CCTs and increase the CCTs to 470ms, 500ms, 220ms and 120ms, respectively. to 470ms, 500ms, 220ms and 120ms, respectively. to 470ms, 500ms, 220ms and 120ms, respectively. to 470ms, 500ms, 220ms and 120ms, respectively.

Investigating the steady state stability of the Nigerian 48- bus systems using facts devices

“…respectively. The voltage profile for the unfortified system of Figure 3 and as depicted in Table 3 shows that the following buses have voltage magnitudes below the acceptable ±5% of the normal 330 kV voltage magnitude profile (1.0 p.u) [19]: 3(Kaduna), 4(Kano), 6(Makurdi), 9(Jos), 28(Ayede) and 31(Sakete). The result of the power flow also showed that the total real power generation in p.u.…”

“…where is the reference reactance, Xc is the function of state variables Vi, Vj and Vse. The objective function can be written as ∆ ( ) = ( ) − = 0 (19) where = [ , , , , , ]…”

Reliability and protection in distribution power system considering customer-based indices

“…Tests carried on 6-bus, IEEE 14-bus, IEEE 30-bus, and IEEE 57-bus test systems were successful but the work is more of theoretical assumptions. In the study [15], a static var compensation (SVC) was conducted on the Nigerian 330kV transmission network with the focus of developing indices for improving the transient stability using an appropriate size to locate SVC within the network. The result showed an improved voltage profile and stability of network but the authors did only consider the optimal size of the DG.…”

Improving the transient stability of the Nigeria 330kV transmission grid using thyristor controlled series compensator

“…In the last few years, the power system interconnected network has become more complex and difficult to manage due to increase in load demand which has forced electric utilities to either operate the system beyond or close to their thermal stability limit [1]. This development of operating the system close to its limit will definitely have a negative effect on the system security [2]. Security of power system refers to its ability to withstand disturbances without losing synchronism.…”