Research On Light Water Complementary Operation Strategy Of Grid

With China’s economic and social development, people constantly growth, demand for electricity is becoming more and more high to the requirement of power quality. An energy dried up and protect the ecological environment of increasingly high, make the light energy, water, as a kind of clean renewable energy, gradually become the energy base of human development. But stochastic, intermittent and controllability of the light makes the photovoltaic power output is there is a lot of volatility, and grid security and stability caused by the larger impact. Set up light water complementary power generation system, not only can provide reliable, high quality low energy to the grid, also increased the stability of power grid operation, improve the benefit of the operation of the photovoltaic power generation.First, design the structure of the light water complementary system. The system includes photovoltaic parts, hydraulic power generation, energy storage devices, etc. In the understanding of photovoltaic power generation technology, hydraulic power generation technology, energy storage, such as micro grid theory, on the basis of light water complementary characteristics were analyzed.Secondly, the establishment of a light water complementary mathematical model of the micro grid. Based on the optimal operation of power system, light water complementary micro grid can profit model, the optimal use of conventional hydropower station is adjustable, make full use of photovoltaic energy implementation, and to reduce the uncertainty of photovoltaic power generation the effects of stable operation of power grids. Fully consider various constraint conditions of the system, such as the characteristic of photovoltaic power generation systems, the constraints of the hydropower station reservoir hydropower unit pricing, the constraint conditions, etc.In the end, for a given under the condition of light water complementary micro grid optimization operation of numerical simulation. According to the mathematical model of light water complementary power generation system, adopts the CPSO algorithm has carried on the simulation calculation of the concrete calculating examples, and analyzes the given under the condition of power allocation and earnings. Verify the light water complementary micro grid power grid access more safe and reliable, higher profits.Through the above research, proved that the light water complementary micro grid can alleviate after pv power generation system connected to the electricity grid to power grid, the influence of the flexibility to provide users with ideal and reliable electricity, maximize the realization of the value of the solar energy and hydropower resources.