| Since the reform and opening, China's economic has experienced a rapid development and got remarkable achievements. Its GDP has surpassed Japan and become the second largest country. As economic developing, energy consumption keeps increasing. Energy supply mainly rely on primary energies, so pollutant emission growing rapidly, such as CO2?SO2?NOX and so on, which makes environmental situation becomes worse. As a developing country, economic development is the main task, which puts enormous pressure on the relationship between economic development, environment protection and energy supplying. Electric power industry is an important energy supply industry in China, so its energy saving and pollution reduction is of great signification to the whole country's sustainable development. When analyzing China's energy structure, we can find that thermal units'output occupies more than80%of the total power generation. This situation makes electric power industry plays an important role in the progress of achieving China's emission reduction targets. How to ameliorate China's power structure? How to increase clean energy generation? How to decrease energy consumption, pollutant emission and cost during energy generation progress? All these questions are worth studying and practicing. According to research statues, we know that conducting power generation replacement between units can effectively decrease thermal power generation and increase renewable energy power generation. Especially during large-scale grid connecting of hydropower, system's energy consumption rate, pollutant emission and cost are all decreased. To ease the plight of economic, energy and pollutant emissions, we should emphasis on carrying out energy generation replacement. However, conventional replacement model cannot balance energy saving, pollutant emission reduction and low cost demands. And a new power generation replacement matching basis is in urgent need. Therefore, this paper puts energy consumption, pollutant emission and generation cost on an equivalent cost namely generation performance costs. And on this basis, establishes several kinds of power generation replacement model. The main work of this article can be summarized as following:(1) Reviewed research results on power generation replacement, and introduced China's basic power generation theories, basic trade patterns and economic compensation mechanisms. Then compared different generation pattern's economic and environmental benefits, and established the theoretical foundation.(2) To make up for the deficiencies of conventional power generation replacement trade mode, this paper put forward the basic concept of generation performance and its basic content. Then take energy-saving, pollutant emission reduction and low cost into consideration and put forward a comprehensive evaluation index system for power generation performance. This paper established an empowerment-based integration ideal element extensional model, which can evaluate power generation performance. A simulation certificated its validity and applicability.(3) Based on research results of papers that on thermal power generation replacement feasibility, this paper established units'power generation and benefits distribution model based on power generation performance, power generation replacement optimization model based on task agency, and power generation scheduling model based on environment protection and low cost. And its simulation result shows that when using power generation performance as matching criterion, we can get an optimal result to meet requirements from energy saving, pollutant emission reduction and low cost. And multitasking principal-agent model suits power generation replacement among thermal units.(4) this paper demonstrated the feasibility of power generation between thermal power and hydropower units. And then established multi-objective thermal-hydro power CVaR model based on power generation performance, and thermal-hydro power two-period scheduling optimization model. Their simulation results show that the multi-objective CVaR model can reflect the influence of risk appetite on the result of system scheduling more effectively. And the two-period model can reduce energy consumption, pollutant emission and cost, which can improve system's power generation performance.(5) Introduced current situation of wind power in China, put forward existing problems and solving methods. This paper pulled in chance-constrained programming approach, and established thermal-hydro power generation performance replacement optimization model, and corresponding solving algorithm that based on entropy fuzzy satisfaction. Its simulation result shows the thermal-hydro power generation performance replacement optimization model can get a more balanced system scheduling scheme and reflect effect of different confidence levels for power generation scheduling system.(6) Pulling in LHS method to establish multi-type power generation optimization scheduling models respectively based on MLS AD method and Mean-CVaR method. And this paper used a simulation to compare two models'effectiveness. The result shows that as error variance of wind power prediction increasing and confidence level improving, system operation cost increasing. That means the methods put forward are along with real condition, so these models can suit multi-type power generation units scheduling optimization problems... |
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