降压节能(Conservation Voltage Reduction，CVR)技术是促进系统节能、缓解峰时供能压力的有效手段，现有CVR技术主要通过研究“电压-潮流”之间的耦合关系来实现节能效果，然而对“电压-碳流”之间的映射关系尚不明晰，CVR技术的降碳潜能有待探索。为此，以减少碳排放与有功消耗为主要目标，建立“电势-碳势”之间的解析关系。首先，分别构建考虑碳排放强度时间和空间变化的CVR技术模型，探讨CVR技术因负荷特性导致的效果差异性问题。其次，综合考虑系统低碳性与经济性，提出一种基于CVR技术的主动配电网“电压-碳排”协同优化控制方案，采用电压控制、最优潮流等方法进行分析求解。最后，以IEEE 33节点典型算例验证该文所提协调控制策略的有效性：对时间和空间下系统节能与碳减排目标之间的不一致性进行了验证，分别实现0.65%和3.8%碳减排效果的提升；协同优化控制方法能够从不同受益主体出发，通过控制策略优化实现碳减排效果的提升。

Conservation voltage reduction (CVR) technology is an effective approach to promote system energy saving and alleviate peak power supply pressure. Existing CVR technology mainly achieves energy-saving by studying the coupling relationship between “voltage and power flow”. However, the mapping relationship between “voltage and carbon flow” is unclear, leaving the carbon reduction potential of CVR technology underexplored. To address this, an analytical relationship between “electric potential and carbon potential” is established, with the primary objectives of reducing carbon emissions and active power consumption. Firstly, CVR technology models considering the temporal and spatial variations of carbon emission intensity are developed, exploring the impact of load characteristics on the effectiveness of CVR technology. Secondly, a coordinated “voltage-carbon emission” optimization control scheme for active distribution networks based on CVR technology is proposed, integrating methods such as voltage control and optimal power flow for analysis and solution. Finally, the IEEE 33-node system is used to validate the effectiveness of the proposed coordinated control strategy. The results demonstrate that the inconsistency between energy saving and carbon reduction targets is verified, and the effect of carbon reduction is improved by 0.65% and 3.8% respectively; the coordinated optimization method can enhance carbon reduction outcomes by tailoring control strategies to different benefit stakeholders.