Consequently, they utilise simpler, less costly and more efficient cooling systems. Advancements in the HTS wire technology have resulted in superconducting electromagnets that can operate at higher temperatures than those made of low-temperature superconductor materials. The development of high-temperature superconductivity enabled the development of a second type: HTS based machines which are smaller, lighter, more efficient and less expensive to manufacture and operate than conventional machines.
To do so, they use a small amount of active power from the power system to supply losses. Synchronous condensers have traditionally been used at both distribution and transmission voltage levels to improve stability and to maintain voltages within desired limits under changing load conditions and contingency situations. An increase of the device’s field excitation results in providing magnetizing power (kVAr) to the system. The device can provide continuous reactive power control when used with the suitable automatic exciter. Technology TypesĪ synchronous condenser is a conventional solution that has been used for decades for regulating reactive power before there were any power electronics compensation systems.Ī conventional synchronous condenser is an AC synchronous motor that is not attached to any driven equipment.
Synchronous condensers are perfectly suited to control-ling the voltage on long transmission lines or in networks with a high penetration of power electronic de-vices as well as in networks where there is a high risk of ‘islanding’ from the main network. It constitutes an interesting alternative solution to capacitor banks in the power system due to the ability to continuously adjust the reactive power amount. Its purpose is not to convert electric to mechanical power or vice versa, but to make use of the machine’s reactive power control capabilities and the synchronous inertia. This device provides improved voltage regulation and stability by continuously generating / absorbing adjustable reactive power as well as improved short-circuit strength and frequency stability by providing synchronous inertia. A synchronous condenser (also called a synchronous capacitor or synchronous compensator) is a DC-excited synchronous machine (large rotating generators) whose shaft is not attached to any driving equipment.
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