CAJ | 학술논문

为解决间歇分布式能源入网等问题，国内外建设直流电网的呼声高涨。与高压直流电网相比，建设直流配电网的电力电子技术相对成熟，技术经济性好，应时开展直流配电网理论研究具有重要意义。针对直流配电网潮流计算，构建了网状结构直流配电网等值网络和节点功率、节点电压、线路网损模型，提出了直流配电网潮流计算的约束条件、控制策略和稳态功率、电压分布算法。最后，利用IEEE 16节点算例对模型和算法进行了验证，证明了电压分布均衡性对网损的影响较大、网状电网接纳分布式电源的能力较强。
위해결간헐분포식능원입망등문제，국내외건설직류전망적호성고창。여고압직류전망상비，건설직류배전망적전력전자기술상대성숙，기술경제성호，응시개전직류배전망이론연구구유중요의의。침대직류배전망조류계산，구건료망상결구직류배전망등치망락화절점공솔、절점전압、선로망손모형，제출료직류배전망조류계산적약속조건、공제책략화은태공솔、전압분포산법。최후，이용IEEE 16절점산례대모형화산법진행료험증，증명료전압분포균형성대망손적영향교대、망상전망접납분포식전원적능력교강。
Direct current (DC) networks have been recognized as a solution to the integration of intermittent distributed energy resources ( DERs) into power systems.This necessitates the theoretical study on DC distribution networks, which can be built with more proven technology of power electronics and deliver better techno-economics than high-voltage direct current networks.Therefore, it is aimed at researching the steady-state operational charac-teristics of DC distribution networks by:①providing an equivalent model of DC distribution network with meshed topology;and② setting the constraints, control policy, steady-state power and voltage profile algorithms for the calculation.The models and the algorithms are verified with an IEEE 16-bus test system, proving that power loss is significantly impacted by the balance of voltage profile and that meshed networks are well positioned to accommo-date DERs.