The pumped storage unit has good adjustment characteristics of a fast power response and convenient start stop, which provides support for the safe stable operation system. To this end, paper proposes fractional order PID (FOPID) optimization control method regional load frequency pumped-storage plants. Specifically, based on IEEE standards, established single-region model storage. Then, contro...

In conventional power plants trash-racks are provided at the intakes to protect the turbines. In pumped storage plants, the draft tube or tailrace must also have trash-racks to protect the units while pumping. Because the loads believed to cause many failures of trash-racks are dynamic in nature, it is important to understand the dynamic characteristics of trash-rack structures in general and a...

The pumped storage power station is flexible to start, can realize effective of electric energy, and has superior peak frequency modulation effects, which beneficial provide comprehensive benefits the system. But at present, construction pumped-storage plants obviously exceeded speed policy market development, resulting in problems operation cost reduction. Aiming this problem, paper further ex...

This paper presents a forward recursive procedure to calculate the expected system marginal cost curve (EMC). The EMC formulation allows for multi-state and multi-block dispatch of generating units and is used to determine the optimal energy of pumped-storage units. A new approach is developed to compute the first and second derivatives of the expected generation energy of a thermal unit with r...

For many years energy optimization has dealt with large scale mixed integer linear programs. The paper concentrates on programs that are used for controlling an existing generation system consisting of thermal power units and pumped hydro storage plants, therefore they should be solved in real time. The problem can be decomposed into smaller problems using Lagrangian Relaxation. One of these pr...

in this article our objective is to obtain steady state characteristics of shunt, series, and separately excited dc motors coupled with a centrifugal water pump supplied through a step-up, step-down, and cuk converter from photovoltaic generator. we assume that there are no storage batteries and, of course, the system must operate on maximum utilization i.e. maximum water must be pumped. it is ...

For the multi-energy power system composed of thermal power, wind and a pumped-storage station aiming at minimizing coal consumption grid, an optimal dispatch model is established in this paper. Its advantage to allow grid accept high proportion new energy while ensuring demand. The dynamic programming method used solve problem. In solution process, traditional improved by introducing penalty f...

In the context of insufficient system operation flexibility and increasing peaking pressure caused by large-scale integration renewable energy into grid, a market model for auxiliary services involving pumped storage power stations is proposed in this study. First, taking minimum peak shaving cost as optimization goal, value participating units quantified, mathematical service established. Then...

Hydroelectric Pumped Storage (PHS) is the most widely utilised form of large-scale electrical energy storage (EES). The energy is stored as the potential energy of water raised against gravity. Water is pumped from a lower reservoir (1) to a higher reservoir (2), using the energy provided by the pumping unit (3), storing it as potential energy in the water. Figure 1 is a simple scheme of a PHS ...