配电变压器更换项目节能量测量与验证的新算法*

摘要

At present, State Grid Corporation is building Smart Grid which is robust, self-healing and interactiveto reach a safe and economical power system. In the process of establishment of Smart Grid, distribution transformers which are dissatisfied with the demand of increasing load must be reformed or replaced. However, economic costs and loss reduction and energy savings should be taken into account when a transformer is selected. According to existing calculation methods of energy savings, this paper proposes a new method for the calculation of distribution transformer after the original transformer is reformed or replaced. The energy saved of distribution transformer projects can be calculated scientifically and easily, and the parameters for the calculation can be easily obtained, which offers a new idea and method for measurement and verification of distribution transformer.%　　目前国家电网正建设坚强、自愈、互动的智能电网，以全面提升电网的安全性和经济性。智能电网的建设必将对已不能满足负荷需求的配电变压器进行改造或更换，而变压器的选择需要考虑经济成本和降损节能等诸多因素。针对现有节能量计算方法，本文对项目实施后配电变压器节能量提出一种新的计算方法，该方法能更加科学便捷地计算出配电变压器更换前后的节能量，且需要的参数较容易获得，为配变更换项目的节能量测量与验证提供全新的思路与方法。