Balanced power supply system of electric locomotive test wire
A technology for electric locomotives and power supply systems, which is applied in the direction of eliminating/reducing asymmetry in multi-phase networks and reducing asymmetry in multi-phase networks, and can solve problems such as reducing the bus current on the incoming side of 10kV.
Pending Publication Date: 2018-11-02
ZHUZHOU CSR TIMES ELECTRIC CO LTD
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, there is no simple and effective power supply system that can meet the traction power supply requirements of the electric locomotive commissioning test, and at the same time significantly reduce the bus current on the 10kV incoming line side to achieve a three-phase balanced power supply
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] The core of the present invention is to provide a balanced power supply system for electric locomotive test lines, which can realize three-phase balanced power supply on the 10kV side, eliminate the influence of negative sequence and voltage fluctuations on the downstream power quality sensitive loads of other power supply lines at the common connection point, and ensure The power supply system operates safely and reliably.
[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the ar...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a balanced power supply system of an electric locomotive test wire. The balanced power supply system comprises a locomotive traction power supply electronic system and a powerbalancing sub-system, wherein the locomotive traction power supply electronic system comprises a traction transformer, a primary winding of the traction transformer is connected with a three-phase power supply, a power supply output end of a secondary winding is connected with a power supply input end of an electric locomotive, the power balancing sub-system comprises a Scott wiring traction transformer and a balanced power supply device, a primary high-voltage winding of the Scott wiring traction transformer is connected with a three-phase power supply, a power supply output end of a secondary first output winding in a secondary first group of output winding of the Scott wiring traction transformer is connected with a power supply output end of a secondary second output winding in a secondary second group of output winding and the balanced power supply device, and the balanced power supply device is used for controlling active power accommodation and passive power output of two converters in the balanced power supply device to achieve three-phase current balancing. By the balanced power supply system, three-phase balanced power supply can be achieved, and the influence of negativesequence and voltage fluctuation on a sensitive load of downstream electric energy quality of other power supply circuits at a public connection point is eliminated.
Description
technical field [0001] The invention relates to the technical field of traction power supply, in particular to a balanced power supply system for an electric locomotive test line. Background technique [0002] The public power grid is a three-phase power supply system, and electric locomotives are high-power single-phase loads, which will cause a serious three-phase imbalance in the public power grid. The electrified railway adopts 220kV or 110kV power supply, with high voltage level and large power supply capacity. At the same time, it adopts segmented phase sequence rotation power supply, which can effectively suppress the adverse effects caused by single-phase high-power electric locomotives. [0003] The electric locomotive test line is usually powered by the ubiquitous AC three-phase 10kV power supply, and the single-phase 25kV voltage is output through the transformer to power the electric locomotive. For details, please refer to figure 1 , due to the relatively small...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02J3/26
CPCH02J3/26Y02E40/50
Inventor 胡家喜吕顺凯周方圆曹洋张志学邱文俊胡前肖宇翔何健明
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD