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Complexities of smart grid and increasing share of renewable resources require development of intelligent decision-making support systems. Predictive Analysis of the power system extended several hours into near future can provide an insight into potential operational emergencies and assist in taking proactive corrective actions. The proposed prediction of network conditions takes advantage of load forecast, generation forecast, interchange schedules, dynamic line ratings, planned outages, and weather forecast. This paper presents the implementation results of look-ahead analysis for a large US electrical utility. Monitoring of projected violations and the derivatives of their trends provide enhanced monitoring capability to detect dangerous situations developing in the power system. The real-time prediction and intelligent alarming enhances situational awareness of operators in the control room.

The paper brief is one out of the first approaches in Turkey to popularize HVDC-light transmissions. It deals with: 1. Lab design and PSCAD modeling of a special bridge controlled AC - DC three load (star-delta) rectifier. It uses 9 group of valves (instead of 6 group valves of common bridge), three lines of former AC transmission, the earth and three DC loads between the lines and earth (or a star-delta inverter). 2. Lab design and PSCAD modeling of a special controlled bridge DC - AC star-delta inverter between three DC source and AC network. It also uses 9 group of valves (instead of common 6 group valves), three input DC lines (and the earth) and three outputs AC transmission lines. 3. Comparison of the bridges construction and modeling results of traditional HVDC-light transmission (6 valves rectifier, traditional DC line and 6 valves inverter) and designed AC-DC-AC transmission (9 valves rectifier, AC line and 9 valves inverter). The proposed star-delta rectifier and inverter can be implemented in common electrical applications such as HVDC transmission, supply of isolated loads, asynchronous grid connection, infeed of small-scale distributed generators (DG), infeed to city centers, for DC grids, converting the AC lines into HVDC light lines, etc.