The power systems are operating closer to their capacity limits to improve the efficiency of the system operation. This has increased the risk of system failures in the event of possible contingencies. The electricity supply industries need tools for dealing with system-wide disturbances that can cause widespread blackouts in power networks. When a major disturbance occurs in the system, the pr...

A synchrophasor system solution generally incorporates precise timing sources, Phasor Measurement Units (PMUs), Phasor Data Concentrators (PDCs), communication network and phasor based applications. Even though all components may pass the laboratory tests, there is no guaranty that everything will work properly together after installation and deployment in the field. To preserve an acceptable l...

This paper will discuss about an active power generator scheduling method in order to increase the limit level of steady state systems. Some power generator optimization methods such as Langrange, PLN (Indonesian electricity company) Operation, and the proposed Z-Thevenin-based method will be studied and compared in respect of their steady state aspects. A method proposed in this paper is built...

this paper presents a fault location technique for transmission lines with minimum current measurement. this algorithm investigates proper current ratios for fault location problem based on thevenin theory in faulty power networks and calculation of short circuit currents in each branch. these current ratios are extracted regarding lowest sensitivity on thevenin impedance variations of the netw...

Phasor measurement units (PMUs) are important devices for protection, monitoring, and control of modern power systems. Unlike the supervisory data acquisition (SCADA) system which only measure magnitude, PMUs can provide a set synchronized phasor measurements with high sampling rate accuracy less than one second, better monitoring especially during outages. Since costly devices, operator is not...

In this paper, the modeling for a complete scenario of a proposed wide area measurement system (WAMS) based on synchronized phasor measurement units (PMUs) technology with the access of a broadband communication capability is presented. The purpose is to increase the overall system efficiency and reliability for all power stages via significant dependence on WAMS as distributed intelligence age...

This paper presents preventive and emergency control measures for on line transient stability (security) enhancement. For insecure operating state, generation rescheduling based on a real power generation shift factor (RPGSF) is proposed as a preventive control measure to bring the system back to secure operating state. For emergency operating state, two emergency control strategies namely gene...

Owing to the technological advancement in communication areas, presently, the security and the reliability of operating power system is very much possible on real-time platform. Phasor measurement units (PMUs) are based on these advance communication technology and are one of the most important equipment for electric utility, now a days, helpful in maintaining a healthy operating power system. ...

An alternative and simplified procedure is described to estimate the longitudinal resistances of transmission lines based on the real-time load profile. This method proposes to estimate the resistance parameters from the synchronized measurements of complex currents and complex voltages at the sending and receiving ends of transmission systems. The synchronized measurements can be in practice o...

State estimation is often a challenging task in distribution systems due to numerous nodes and limited number of measurement sources. As a result, distribution system state estimation is often not real-time; instead, it is done once every 5 to 15 minutes, e.g., when smart meter measurements are available. Accordingly, this paper proposes a novel method for tracking state estimation in distribut...