In this article, let's look at the characteristics of shunt generators among self-excited generators. There is also a concept called critical resistance, which is helpful in understanding the no-load characteristics of a shunt generator. Is this included when all other generators, direct power, decentralized power, and lottery generators are no-load?
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The following is an explanation of the no-load saturation curve and three-phase short-circuit curve of a generator among transmission engineering problems. I will describe it in the order of overview, characteristics of short-circuit ratio, and application. It is used to understand the characteristics of the generator's field system and analyze how the induced voltage of the generator changes. As a side note, in power engineering, to prevent the Ferranti phenomenon in long-distance transmission lines, the phrase ‘installing reactors in parallel’ is the same as ‘installing a shunt reactor.’
For detailed explanation, please refer to the following post.
The external characteristic curve is at the terminals of the generator (two circles at the right end of the circuit). When there is a load, the characteristic relationship between load current and terminal voltage 1.2.2. A shunt generator is characterized by small voltage fluctuations because the field and armature are configured in parallel with each other. You said that the terminal voltage and induced electromotive force are the same in the no-load characteristic curve.
This is a curve that shows how the terminal voltage (load voltage) v changes when a load is applied to the terminals of the generator and a test is performed from no load to short circuit. Depending on the electrical connection method of the field, it is classified into shunt generator, lottery generator, and series generator. Users can select the type of motor or generator they want using the characteristic curve. Characteristic curves can identify the characteristics of motor generators in a wide range of areas.
