A comprehensive energy saving potential evaluation method for the distribution networks

• Published in: 2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT) pp. 478 - 481
• Main Authors: Biyun Chen, Tangshan Cui, Lei Ye, Cuizhen Li
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-11-2015
• Subjects: cost-effectiveness; distribution network; Economics; Electric potential; energy saving potential; Investment; Loss measurement; loss reduction; Power measurement; Q measurement; Voltage measurement; voltage quality
• DOI: 10.1109/DRPT.2015.7432308

The construction projects for distribution networks require good economy besides energy saving and voltage quality improvement. Thus the line loss rate and voltage qualification rate are the main assessment indices of construction projects for distribution networks. This paper proposes a comprehensive energy saving potential (ESP) evaluation system for distribution networks. The above basic indices and comprehensive ESP indices for each selected feeder are calculated under different improvement measures. Firstly, typical feeders are modeled using Power Factory software. Then power flow for distribution networks is calculated and weak networks can be found. Secondly, improvement measures for typical feeders can be chosen based on weak networks analysis to achieve the purpose of reducing the power loss rate. Thirdly, the paper gives the definition of loss reduction rate, voltage improvement rate and economic benefits. Furthermore, the implementation order of the measures is optimized according to the value of comprehensive ESP indices and the difficulty extent of implementation. The investment cost and the transformation effect are considered simultaneously for planning. Four measures which include replacing high-loss transformers and worn conductors, adding reactive power compensation devices and adjusting bus voltage are carried out on the IEEE 33-bus test system. The results of simulation calculation demonstrate the validity and superiority of the proposed system.