It is the purpose of the present paper to investigate the level of electricity generation, storage and transmission of hydraulic power unit with charging accumulator circuit in order to achieve fluctuation free power generation, cost reduction and power reutilization. The study derives a mathematical model suited to the simulation of the hydraulic accumulator both in an open- or close-loop system. Through the application of the geometrical data and the thermodynamic principle, the model of an ideal hydraulic accumulator emerged. The research was occasioned as a result of lower energy capacity storage and saving/reutilization of the conventional accumulator resulting in the short cycle time usage of hydraulic accumulators both in domestic and industrial purposes. The basic components are variable displacement pumps driven by electric motors, hydraulic accumulator, hydraulic tank, hydraulic turbine, piezoelectric coated piston cylinder, different type of hydraulic valves including charging valve, control/measuring devices and the main supply and return manifolds. The arrangement enables the pumps to switch from free circulation into accumulator charging function if a specified minimum load pressure in the accumulator fails to be attained. At the end of the closing and charging period, the upper accumulator load pressure is attained and the variable displacement pump switches back into free circulation. This system, which could be called hydraulic pressure power mini net station (HPPNS), could supply the entire electricity demand to a localized group of customers thereby avoiding the cost of transmitting electricity from a distant central-plant power station (CPPS). The system stores hydraulic fluid in a high-pressure storage tanks for electricity generation, which is transmitted to the users when needed. The electricity, which is produced through piezoelectric coated cylinder piston and hydroelectric devices powered by high pressurized hydraulic fluid, is also used to pressurize more hydraulic fluid that is supplied to the high-pressure storage tanks for future use. This method proved that the excess electrical energy generated from the pressurized hydraulic fluid is recycled and stored in high-pressure tank for future use. The research work appears to be very efficient method for generating fluctuation free electricity, power quality and reliability, energy saving/reutilization and system noise reduction.
