Practical method for finding power system parameters as necessary for analysing the operating regimes of adjacent interconnected systems

We can equalise the own power system to one of its nodes and we achieve a series of assessments in relation to its parameters. The equalisation is achieved by a succession of laborious calculations. The method was achieved by Paul Dimo being well known as REI Dimo [1]. This is possible only in our own power system where the configuration is well-known, but it is not feasible for external systems with which our system is interconnected because we do not know its configuration.In this work we develop an experimental method through which it ascertains the necessary parameters of the links of a node with the rest of the system, resulting in a way to get them without performing Dimo’s laborious calculations. The method is based on the observation that any source of energy or any consumer, even far-off from the node in cause, has an influence on the links of the respective node with the rest of the system. A power system behaves like a living organism in which a presence somewhere is felt in the whole organism. Bigger electric distance results in bigger influence and the other way around.The experimental method is useful in our own system, but it is much more useful at the links of our system with neighbour interconnected systems. It creates the possibility to know what we can obtain by interconnection without knowing the configuration of the neighbouring systems.

► The equivalence of a power system with one of its nodes allows an excellent assessment of its behaviour.
► The method, elaborated by Paul Dimo, is excellent, but it is accompanied by laborious calculations.
► I developed an experimental method without the need to know the configuration of the system, useful for neighbour systems.
► I experimented successfully this method in a 400 kV node and a 220 kV node.
► A probability to run into extreme case that all terms measured in extreme error and directed to maximum error is developed.