CAJ | 학술논문

针对现有电网规划方法对未来不确定因素适应性较差的缺点，从加强系统自身鲁棒性的角度出发，通过对线路负载率约束进行柔性化表示，控制系统中最重载线路的负载率，从而在规划过程中保留部分系统潮流输送能力，为系统预留一定的运行安全裕度和对不确定因素的适应能力。同时，通过对电网投资成本、运行成本和可靠性收益在电网全规划周期内的成本评估，提出兼顾系统经济性、安全性和可靠性的电网规划模型，并用蚁群算法求解。Garver 6节点测试系统的算例表明，提出的电网规划方法有效可行，有利于提高线路负载率分布的均匀程度，降低系统进入自组织临界状态和发生大规模连锁故障的风险，同时也是对整个电网规划周期内系统资源的综合优化。
침대현유전망규화방법대미래불학정인소괄응성교차적결점，종가강계통자신로봉성적각도출발，통과대선로부재솔약속진행유성화표시，공제계통중최중재선로적부재솔，종이재규화과정중보류부분계통조류수송능력，위계통예류일정적운행안전유도화대불학정인소적괄응능력。동시，통과대전망투자성본、운행성본화가고성수익재전망전규화주기내적성본평고，제출겸고계통경제성、안전성화가고성적전망규화모형，병용의군산법구해。Garver 6절점측시계통적산례표명，제출적전망규화방법유효가행，유리우제고선로부재솔분포적균균정도，강저계통진입자조직림계상태화발생대규모련쇄고장적풍험，동시야시대정개전망규화주기내계통자원적종합우화。
In allusion to the poor adaptability of existing power grid planning methods to future uncertain factors and to enhance the robustness of power grid its own, through the flexible expression of load rate constraint of transmission line a part of power flow transmission capability is reserved during the planning to obligate a certain security margin and adaptive capacity for uncertain factors. Meanwhile, through the evaluation on power grid investment cost, operational cost and income from reliability within full planning cycle of power grid, a power grid planning model considering grid economy, security and reliability is proposed and solved by ant colony algorithm. Results of Graver 6-bus test system show that the proposed power grid planning method is effective and feasible, and is favorable to improve the uniform degree of line load rate distribution and reduce the risk of falling into self-organized critical state or occurring large-scale cascading failure, besides using the proposed power grid planning method grid resources can be optimized comprehensively during full power grid planning cycle.