Chapter 16Electric Power Network Splitting Considering Frequency Dynamics and Transmission Overloading Constraints

Nelson Granda1 and Delia G. Colomé2

1Facultad de Ingeniería Eléctrica y Electrónica, Escuela Politécnica Nacional, Quito, Ecuador

2Instituto de Energía Eléctrica, Universidad Nacional de San Juan - CONICET, San Juan, Argentina

16.1 Introduction

Electrical Power System (EPS) security refers to the ability of the system to overcome imminent disturbances without loss of load. Security not only includes stability but also integrity and evaluation of EPS operation considering under/over voltages, under/over frequency, and overloads. Security control aims at decision making considering different time horizons and detail levels in order to prevent catastrophic contingencies and blackouts.

Controlled power system islanding is considered as the last emergency control action to halt failure propagation, avoiding uncontrolled power system separation and preventing wide area blackouts. In order to design a controlled islanding scheme (CIS), it is necessary to define electrical areas with adequate generation/demand balance and transmission facilities that can be opened. A global survey shows that controlled islanding schemes represent around 7% of protection schemes installed worldwide to safeguard EPS integrity [1]. A carefully planned and implemented controlled islanding scheme, besides preventing blackouts, allows: satisfying power demand for some users, maintaining operating ...

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