【作者】 欧阳征武；

【导师】 彭建春；

【作者基本信息】 湖南大学 ， 电力系统及其自动化， 2004， 硕士

【摘要】 在电力市场环境下，输电领域的改革要求输电网的所有权者必须向电网的所有用户平等地提供输电服务，充分利用现有的输电网络资源。这样，如何快速有效地计算输电系统可用传输能力非常必要。本文首先总结了输电网可用传输能力研究的历史及现状，介绍了最大可用传输能力、输电可靠性裕度、容量效益裕度等与ATC计算相关的概念，分析了影响ATC计算的各种不确定因素。然后，比较分析了现有基于确定性模型的ATC典型计算方法的优缺点。 传统的最优潮流法计算ATC时，必须假设所有的最优化参数在整个供电区和受电区间可以集中分配。在非集中性的环境中，这种假设通常得不到满足，因而，传统的最优潮流法就不能计算ATC。本文提出了一种基于传输的考虑安全约束的最优潮流数学模型，考虑了系统的电压安全约束、线路热极限约束以及稳定性安全约束，采用先进的约束变尺度最优化方法求解ATC。本文所提出的方法仅仅假设优化参数在选定的供电区和受电区可以集中分配，在非集中性的网络结构中假设也可以得到满足，所以该方法在非集中性环境也同样适合计算输电网络的ATC。同时，所提方法还可以任意的调整供电区的有功出力以及受电区负荷的有功和无功功率，相对于连续潮流法和反复潮流法只能按照某确定的步长进行调整而言，是有广泛应用前景的好方法。 最后利用MATLAB工具制作了仿真分析程序，对典型的传输系统进行分析计算，充分证明了该方法的有效性。更多还原

【Abstract】 Under the condition of power market environment, the reform in transmission area requires the right of a transmission provider to supply all the transmission customers equally, so as to take full advantages of transmission sources of power system. Thus, it is necessary to calculate ATC(Available Transfer Capability)fast and correctly. Firstly the full presentation of historic and recent research achievement of ATC is given, definition about calculation of ATC is introduced, including definition of Total Transfer Capability Transmission Reliability Margin Capacity Benefit Margin etc. Then, Several typical ATC calculating methods on the basis of determinable model are compared.Conventional security constrained optimal power flow methods maximize the transfer capability between two control areas assuming all OPFrOptimized parameters can be centrally dispatched, In the decentralized environment, usually this assumption cannot be satisfied, so they are not suitable for TTC(Total Transfer Capability) calculation. To overcome the deficiency of the conventional SCOPF, a transfer-based SCOPF model is presented in the paper, considering voltage limits thermal limits and stability limits. Sequential constrained variable metric programming is used in the optimal power flow (OPF) to calculate TTC. It assumes that only all OPF-optimized parameters involving the selected source and sink area can be dispatched, which can be satisfied in decentralized structure. It can also adjust the real power output at the source area, the real and active load at the sink area in any way, while RPF and CPF adjusts those in a fixed incremental step. TSCOPF is a good method to use in the future application.Lastly, A program for simulation and calculation is developed using toolbox of MATLAB and an example of calculation is given.更多还原