計及可中斷負荷和風電接入的隨機經濟調度方法研究
本文選題:可中斷負荷 切入點:風電波動 出處:《天津大學》2014年碩士論文
【摘要】:隨著社會和國民經濟的發(fā)展,資源和環(huán)保問題對電力系統(tǒng)的調度運行提出了更高的要求,大量的可再生能源發(fā)電設備已接入到電力系統(tǒng)中,并且還將在未來一段時間內保持較高的增長態(tài)勢,僅由傳統(tǒng)發(fā)電資源來滿足負荷需求的經濟調度模式已不能滿足現(xiàn)有電網在經濟性和安全性方面的要求。可中斷負荷作為一種重要的主動式需求響應手段,通過電網和用戶之間的雙向互動,可幫助電力系統(tǒng)消納可再生能源、調節(jié)負荷需求,是提升電網調度運行經濟安全性的重要手段。本文將可中斷負荷和風電的接入納入到經濟調度中,在綜合考慮系統(tǒng)調度的各種約束條件的基礎上,分別對單時段靜態(tài)經濟調度和多時段日前經濟調度進行了研究。本文的主要工作如下:1、將可中斷負荷作為需求側可調度的資源,綜合考慮其調度機制、可調能力、補償價格、中斷時間方面的特性,建立了計及可中斷負荷的電力系統(tǒng)經濟調度模型。2、針對單時段的靜態(tài)經濟調度,建立了計及可中斷負荷互動和風電接入的隨機經濟調度模型,并綜合考慮了系統(tǒng)安全約束、機組約束、可中斷負荷約束等多種條件;诿商乜_模擬仿真和原對偶-內點法,提出了可有效求解上述隨機經濟調度模型的綜合優(yōu)化方法。3、針對時序框架下的日前經濟調度,同時考慮可中斷負荷和風電接入,以及日前經濟調度的時段耦合性,提出了先采用日前機組組合模型確定機組和可中斷負荷調用狀態(tài),后采用經濟調度模型進行優(yōu)化的綜合優(yōu)化調度方法。4、應用IEEE標準算例驗證了所提方法的有效性。
[Abstract]:With the development of society and national economy, the problems of resources and environmental protection have put forward higher requirements for the dispatch and operation of power system. A large number of renewable energy generation equipments have been connected to the power system.And it will maintain a high growth trend in the future. The economic dispatching mode, which only uses the traditional generation resources to meet the load demand, can not meet the economic and security requirements of the existing power grid.Interruptible load, as an important means of active demand response, can help power system absorb renewable energy and adjust load demand through two-way interaction between power grid and users.It is an important means to improve the economic security of power grid dispatching.In this paper, interruptible load and wind power access are incorporated into economic scheduling. On the basis of considering all kinds of constraints of system scheduling, single time static economic scheduling and multi time pre-day economic scheduling are studied respectively.The main work of this paper is as follows: 1. The interruptible load is regarded as the demand-side schedulable resource, and the characteristics of scheduling mechanism, adjustable ability, compensation price and interrupt time are considered synthetically.The economic dispatching model of power system with interruptible load is established. For the static economic dispatching of single period, a stochastic economic dispatching model considering interruptible load interaction and wind power access is established, and the system security constraints are considered synthetically.Unit constraints, interruptible load constraints and other conditions.Based on the Monte Carlo simulation and the original dual-interior point method, a comprehensive optimization method .3is proposed to solve the above stochastic economic scheduling model effectively. The method is aimed at the pre-day economic scheduling under the framework of time series, taking into account interruptible load and wind power access at the same time.As well as the coupling of pre-day economic dispatch period, it is proposed that the pre-day unit combination model be used to determine the unit and interruptible load transfer state.After that, the economic scheduling model is used to optimize the comprehensive optimal scheduling method. The effectiveness of the proposed method is verified by a IEEE standard example.
【學位授予單位】:天津大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:TM73
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