Abstract
The article discusses the issues of the effective use of synchronous motors installed in irrigation pumping stations. The necessary capacities for water delivery to waterless territories are given. It is shown that synchronous motors can generate reactive power and thus actively participate in the control of the system mode.
Highlights
IntroductionSynchronous motors of pumping units can become regulators of the parameters of the electrical system mode
Synchronous motors of pumping units can become regulators of the parameters of the electrical system mode. This is due to the fact that the existing and successfully operated SM of pumping units have power factors in the range of cosφ = 0.8-0.85 and one unit in the nominal mode can produce up to 6 MVAr of reactive power (Pnom = 12.5 MWt)
Considering that the number of SM at large pumping stations in Uzbekistan is several dozen, we are talking about a solid reserve of reactive power regulation
Summary
Synchronous motors of pumping units can become regulators of the parameters of the electrical system mode. Pumping stations are usually presented only as consumers to electrical system dispatchers This situation has its own explanation - in them automatic excitation regulators do not work in coordination with the dispatching service of the EPS for various reasons (technical, organizational). They belong to the category of consumers both in terms of active and reactive power. This can be seen from the diagram below (Fig. 1), showing the capabilities of a synchronous motor in a wide range to change the reactive power (within the limits allowed by technical conditions) This diagram is constructed under the condition of the constancy of the active power consumed by the machine P = const
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