考慮大規(guī)模風電接入系統(tǒng)的發(fā)電優(yōu)化調度模型及方法研究
發(fā)布時間：2018-12-10 19:23
【摘要】：風電等可再生能源的大力發(fā)展有利于實現(xiàn)我國能源結構優(yōu)化調整,促進電力系統(tǒng)的節(jié)能減排,然而風電的波動性、不確定性和逆調峰性也給系統(tǒng)的安全穩(wěn)定運行帶來了諸多問題。本文考慮風電對于系統(tǒng)AGC備用、旋轉備用和調峰的影響,對大規(guī)模風電并網條件下的發(fā)電調度優(yōu)化模型及方法進行了系統(tǒng)和深入的研究。 針對風電并網導致系統(tǒng)AGC備用需求增加的問題,提出了風電并網引發(fā)的AGC備用需求預測方法。采用極大熵譜分析法對風電的波動性進行了頻譜分析,并運用滾動平均法對關鍵時間尺度的風功率波動分量進行分離,結合實際算例數(shù)據(jù)對風電的AGC容量需求進行了計算和分析。為充分發(fā)揮風電并網條件下各類電源提供AGC的自身優(yōu)勢,進一步促進網內AGC機組之間的充分競爭,本文結合AGC機組調節(jié)性能指標,提出了考慮風電接入系統(tǒng)的AGC備用容量優(yōu)化調度方法；以電能量成本和AGC備用容量成本最小為目標函數(shù),兼顧AGC調節(jié)速度、AGC調節(jié)容量和AGC調節(jié)范圍約束,建立了考慮風電接入系統(tǒng)的AGC備用優(yōu)化調度模型。算例分析表明,所提模型和方法能夠量化分析風電并網引發(fā)的AGC備用容量需求,優(yōu)先調用AGC調節(jié)性能優(yōu)良的機組,充分發(fā)揮水電、火電等不同電源提供AGC服務的自身優(yōu)勢。 針對風電出力不確定性和系統(tǒng)N-1故障對于系統(tǒng)旋轉備用容量優(yōu)化分配的影響,提出了考慮風電和負荷波動及系統(tǒng)N-1故障的旋轉備用優(yōu)化調度方法�；谪摵珊烷g歇式電源功率的預測誤差分布,確定合理的區(qū)間數(shù),采用區(qū)間數(shù)優(yōu)化方法建立表述風電出力與負荷不確定性的數(shù)學模型。在對不確定性場景進行篩選的基礎上,綜合考慮線路傳輸容量約束、故障場景下的網絡拓撲結構變化、連續(xù)波動場景與瞬時離散故障場景下的爬坡約束,建立了考慮多場景的旋轉備用容量和發(fā)電出力計劃一體化優(yōu)化調度模型；并針對模型的復雜性,采用Benders分解降低模型的求解規(guī)模。算例分析表明本文方法能夠將機組組合方案與旋轉備用容量計劃進行協(xié)調同步優(yōu)化,保障了系統(tǒng)在各預想場景下的自愈校正能力。 采用概率性方法處理風電出力和系統(tǒng)N-1故障的不確定性問題；基于風電的預測出力與預測誤差分布,運用拉丁超立方抽樣法生成風電場景,并運用同步回代法對場景進行削減。采用馬爾科夫鏈預測未來時段機組和線路的N-1故障狀態(tài)概率。在此基礎上,兼顧機組組合、機組經濟功率分配以及AGC備用和旋轉備用容量分層協(xié)調優(yōu)化配置等問題,建立了考慮風電與儲能系統(tǒng)的隨機柔性優(yōu)化調度模型。所提模型及方法綜合考慮了系統(tǒng)N-1故障和風電出力的不確定性概率與嚴重性、系統(tǒng)AGC備用與旋轉備用容量輔助服務成本、儲能裝置剩余可充放電能力以及網絡約束的影響。針對該模型的復雜性,將其線性化后采用商用混合整數(shù)線性規(guī)劃求解器CPLEX進行求解。算例分析表明,所提方法可將系統(tǒng)AGC備用容量與旋轉備用容量分層協(xié)調的配置到各個機組,能夠考慮間歇式電源不同時間尺度的波動性和不確定性對于系統(tǒng)的影響,充分發(fā)揮了儲能柔性靈活的優(yōu)勢。 在我國,大規(guī)模風電并網引發(fā)了系統(tǒng)調峰困難和棄風問題,本文提出了促進風電跨省消納的解決方案和促進風電就地消納的風儲聯(lián)合運行模式。針對本文所提調節(jié)市場的平衡調節(jié)相對偏差量最小調度模式,建立了相應的優(yōu)化調度模型,實例分析驗證了本文所提模型的適用性和有效性。針對如何調用儲能裝置促進風電消納的問題,本文分析了不同儲能容量場景和不同風電滲透率場景下的風電接納能力及系統(tǒng)經濟性,提出了風電經濟接納和風電最大接納兩種調度模式,建立了相應的混合整數(shù)線性規(guī)劃模型。算例分析表明,風電經濟接納模式下儲能系統(tǒng)能夠更加柔性靈活地平衡調峰和棄風的矛盾,系統(tǒng)能耗更低。 論文提出的考慮風電接入系統(tǒng)的發(fā)電調度優(yōu)化模型和促進風電消納的調度模式,不僅具有學術價值,而且對于提高電力系統(tǒng)的安全經濟運行和促進可再生能源的健康發(fā)展具有一定的現(xiàn)實意義。
[Abstract]:The development of the renewable energy, such as wind power, is beneficial to the optimization and adjustment of the energy structure of our country, and promotes the energy-saving and emission reduction of the power system. However, the fluctuation, uncertainty and inverse peak-regulation of the wind power bring many problems to the safe and stable operation of the system. In this paper, the influence of wind power on the backup, rotation and peak regulation of the system AGC is considered, and the optimization model and method of power generation scheduling under the condition of large-scale wind power and grid are systematically and deeply studied. Aiming at the problem of increasing the standby demand of the system AGC for the wind power grid, the AGC standby demand forecast party caused by the wind power grid is put forward In this paper, the fluctuation of wind power is analyzed by the maximum entropy spectral analysis method, and the wind power fluctuation component of the critical time scale is separated by the rolling average method, and the AGC capacity requirement of the wind power is calculated and divided according to the actual calculation example data. In order to give full play to the self advantage of AGC of various power sources under wind power and grid conditions, the full competition among AGC units in the network is further promoted. In this paper, the AGC spare capacity of the wind power access system is considered to optimize the dispatching party in combination with the regulation performance index of the AGC unit. The method includes the following steps: taking the minimum cost of the electric energy and the spare capacity of the AGC as a target function, taking into account the AGC adjusting speed, the AGC adjusting capacity and the AGC adjusting range constraint, and establishing an AGC standby optimized dispatching mode considering the wind power access system; The results show that the proposed model and method can quantitatively analyze the demand of AGC standby capacity caused by wind power and network, and give priority to the unit with excellent AGC regulation performance, and give full play to the self-optimization of AGC service by different power sources such as hydropower and thermal power. Potential. In view of the influence of wind power output uncertainty and system N-1 fault on the optimal allocation of system rotation reserve capacity, a rotary spare optimization adjustment considering wind power and load fluctuation and system N-1 fault is put forward. The method comprises the following steps of: determining a reasonable interval number based on the prediction error distribution of the load and the intermittent power supply power, and establishing the number of the expression wind power output and the load uncertainty by using the interval number optimization method; On the basis of screening the uncertain scene, considering the line transmission capacity constraint, the network topology change under the fault scenario, the continuous fluctuation scene and the creep under the scene of the instantaneous discrete fault Based on the slope constraint, the integrated optimal scheduling model for multi-scene rotation reserve capacity and power generation output plan is established, and the model is reduced by the Benders decomposition for the complexity of the model. The analysis shows that the method can coordinate and optimize the unit combination scheme and the rotating spare capacity plan, so as to guarantee the self-healing of the system under each expected scene. The positive ability. The probabilistic method is used to deal with the uncertainty of wind power output and system N-1 fault; based on the predicted output and prediction error distribution of wind power, the wind power scene is generated by using the Latin hypercube sampling method, and the field is applied to the field by using the synchronous generation method The view is cut. The Markov chain is used to predict the N-1 of the unit and line in the future. On the basis of this, the problems such as the combination of the unit, the allocation of the unit's economic power and the optimal configuration of the AGC spare and rotary spare capacity are considered, and the random flexibility of the wind power and energy storage system is established. the model and the method of the invention comprehensively consider the uncertainty probability and the severity of the system N-1 fault and the wind power output, the auxiliary service cost of the system AGC standby and the rotary spare capacity, the residual charge and discharge capacity of the energy storage device and the network, The influence of the constraint is the complexity of the model, and the linear linear programming solver (CPLE) is used to linearize the model. The results show that the proposed method can combine the spare capacity of the system AGC with the rotating standby capacity in a hierarchical and coordinated manner to each unit, and can consider the influence of the volatility and uncertainty of the intermittent power supply on the system, and give full play to the energy storage flexibility. Flexible advantages. In our country, large-scale wind power grid has caused the system peak-regulation difficulty and the wind-off problem. In this paper, the solution to promote the wind power cross-province and the wind to promote the local wind power generation in the wind power system are put forward. In this paper, a corresponding optimal scheduling model is established for the minimum dispatching mode of the relative deviation of the balance adjustment of the adjustment market presented in this paper. The example analysis verifies the model proposed in this paper. The applicability and validity of the wind power generation system are analyzed in this paper. The wind power receiving capacity and the system economy under different energy storage capacity scenarios and different wind power permeability scenarios are analyzed, and the maximum connection of wind power economy and wind power is proposed. The two kinds of dispatching modes are set up, and the corresponding mixing is established. The results show that the energy storage system can be more flexible and flexible to balance the contradiction between the peak load regulation and the waste wind. In this paper, the power generation scheduling optimization model of the wind power access system and the dispatching model for wind power generation are considered, not only have the academic value, but also to improve the safe and economic operation of the power system and promote the healthy development of the renewable energy
【學位授予單位】：華北電力大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TM614;TM73
本文編號：2371076
[Abstract]:The development of the renewable energy, such as wind power, is beneficial to the optimization and adjustment of the energy structure of our country, and promotes the energy-saving and emission reduction of the power system. However, the fluctuation, uncertainty and inverse peak-regulation of the wind power bring many problems to the safe and stable operation of the system. In this paper, the influence of wind power on the backup, rotation and peak regulation of the system AGC is considered, and the optimization model and method of power generation scheduling under the condition of large-scale wind power and grid are systematically and deeply studied. Aiming at the problem of increasing the standby demand of the system AGC for the wind power grid, the AGC standby demand forecast party caused by the wind power grid is put forward In this paper, the fluctuation of wind power is analyzed by the maximum entropy spectral analysis method, and the wind power fluctuation component of the critical time scale is separated by the rolling average method, and the AGC capacity requirement of the wind power is calculated and divided according to the actual calculation example data. In order to give full play to the self advantage of AGC of various power sources under wind power and grid conditions, the full competition among AGC units in the network is further promoted. In this paper, the AGC spare capacity of the wind power access system is considered to optimize the dispatching party in combination with the regulation performance index of the AGC unit. The method includes the following steps: taking the minimum cost of the electric energy and the spare capacity of the AGC as a target function, taking into account the AGC adjusting speed, the AGC adjusting capacity and the AGC adjusting range constraint, and establishing an AGC standby optimized dispatching mode considering the wind power access system; The results show that the proposed model and method can quantitatively analyze the demand of AGC standby capacity caused by wind power and network, and give priority to the unit with excellent AGC regulation performance, and give full play to the self-optimization of AGC service by different power sources such as hydropower and thermal power. Potential. In view of the influence of wind power output uncertainty and system N-1 fault on the optimal allocation of system rotation reserve capacity, a rotary spare optimization adjustment considering wind power and load fluctuation and system N-1 fault is put forward. The method comprises the following steps of: determining a reasonable interval number based on the prediction error distribution of the load and the intermittent power supply power, and establishing the number of the expression wind power output and the load uncertainty by using the interval number optimization method; On the basis of screening the uncertain scene, considering the line transmission capacity constraint, the network topology change under the fault scenario, the continuous fluctuation scene and the creep under the scene of the instantaneous discrete fault Based on the slope constraint, the integrated optimal scheduling model for multi-scene rotation reserve capacity and power generation output plan is established, and the model is reduced by the Benders decomposition for the complexity of the model. The analysis shows that the method can coordinate and optimize the unit combination scheme and the rotating spare capacity plan, so as to guarantee the self-healing of the system under each expected scene. The positive ability. The probabilistic method is used to deal with the uncertainty of wind power output and system N-1 fault; based on the predicted output and prediction error distribution of wind power, the wind power scene is generated by using the Latin hypercube sampling method, and the field is applied to the field by using the synchronous generation method The view is cut. The Markov chain is used to predict the N-1 of the unit and line in the future. On the basis of this, the problems such as the combination of the unit, the allocation of the unit's economic power and the optimal configuration of the AGC spare and rotary spare capacity are considered, and the random flexibility of the wind power and energy storage system is established. the model and the method of the invention comprehensively consider the uncertainty probability and the severity of the system N-1 fault and the wind power output, the auxiliary service cost of the system AGC standby and the rotary spare capacity, the residual charge and discharge capacity of the energy storage device and the network, The influence of the constraint is the complexity of the model, and the linear linear programming solver (CPLE) is used to linearize the model. The results show that the proposed method can combine the spare capacity of the system AGC with the rotating standby capacity in a hierarchical and coordinated manner to each unit, and can consider the influence of the volatility and uncertainty of the intermittent power supply on the system, and give full play to the energy storage flexibility. Flexible advantages. In our country, large-scale wind power grid has caused the system peak-regulation difficulty and the wind-off problem. In this paper, the solution to promote the wind power cross-province and the wind to promote the local wind power generation in the wind power system are put forward. In this paper, a corresponding optimal scheduling model is established for the minimum dispatching mode of the relative deviation of the balance adjustment of the adjustment market presented in this paper. The example analysis verifies the model proposed in this paper. The applicability and validity of the wind power generation system are analyzed in this paper. The wind power receiving capacity and the system economy under different energy storage capacity scenarios and different wind power permeability scenarios are analyzed, and the maximum connection of wind power economy and wind power is proposed. The two kinds of dispatching modes are set up, and the corresponding mixing is established. The results show that the energy storage system can be more flexible and flexible to balance the contradiction between the peak load regulation and the waste wind. In this paper, the power generation scheduling optimization model of the wind power access system and the dispatching model for wind power generation are considered, not only have the academic value, but also to improve the safe and economic operation of the power system and promote the healthy development of the renewable energy
【學位授予單位】：華北電力大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TM614;TM73
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