With the decrease in system inertia, frequency security becomes an issue for power systems around world. Energy storage (ESS), due to their excellent ramping capabilities, are considered as a natural choice improvement of response following major contingencies. In this paper, we propose new strategy energy – <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1...

background & aim:primary dysmenorrhea can be relieved via some medical and non-medical approaches. in this regard, the probable therapeutic role of zinc supplements has been recently emphasized. the present study was conducted to determine the positive effects of zinc supplements on relieving primary dysmenorrhea and premenstrual symptoms. methods:the present double-blind, randomized, controlle...

introduction: chemotherapy is recognized as a primary cancer treatment method, but despite its benefits, it causes side-effects. the most important of these side-effects are nausea and vomiting. given the simplicity of use of non-medicinal methods such as semi-sitting position, which can be performed by the patient alone, with the least effort and no side-effects, this method can be utilized to...

In this article, the sliding mode control of frequency load control of power systems is studied. The study areaconsists of a system of water and heat. First, a mathematical model of the proposed system disturbances ismade and then sliding control mode for frequency load control is provided. By the system simulation andsliding mode control, it can be shown that the damping of oscillations is wel...

modeling and simulation of flywheel energy storage system as v/f reference in islanded microgrid