The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2019
Filed:
Jul. 26, 2014
State Grid Corporation of China, Beijing, CN;
North China Electric Power University (Baoding), Baoding, CN;
State Grid Liaoning Electric Power Company Limited Economic Research Institute, Shenyang, CN;
Ming Meng, Baoding, CN;
Jian Liu, Shenyang, CN;
Xiping Wang, Baoding, CN;
Dalong Hu, Shenyang, CN;
Li Jiang, Shenyang, CN;
Yingwei Song, Shenyang, CN;
Yan Liu, Shenyang, CN;
Liaoyi Ning, Shenyang, CN;
State Grid Corporation of China, Beijing, CN;
North China Electric Power University, Baoding, CN;
State Grid Liaoning Electric Power Company Limited Economic Research Institute, Shenyang, CN;
Abstract
A renewable energy-based hybrid bi-directionally interactive DC traction power supply system includes two traction substations. Each substation includes transformers, rectifiers, bidirectional AC-DC converters, a DC bus, a catenary, a steel rail and a section post. A DC bus between two adjacent traction substations is provided with a DC renewable energy system constructed by an electric vehicle charging-discharging system, a distributed generation and more than one low voltage DC microgrid. The DC renewable energy system is connected to the DC bus between two adjacent traction substations through a high voltage DC bus, thus a DC circular microgrid being formed in a power supply section post. The electric vehicle charging-discharging system is formed by more than one bidirectional DC-DC charging-discharging equipments which are intended for in connection with the power batteries of the electric vehicle. The renewable energy-based hybrid bi-directionally interactive DC traction power supply system of the invention realizes effective usage of distributed generation and recycling of electric locomotive braking energy, reducing DC voltage fluctuation, thus improving reliability of the DC traction power supply system.