A stray current and track potential simulation device
A technology of stray current and simulating device, which is applied in the direction of testing electrical devices, measuring devices, measuring electricity, etc. in transportation, and can solve the problems of single operating condition, narrow application scope and complex structure of simulated trains.
Active Publication Date: 2020-06-02
BEIJING JIAOTONG UNIV
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[0005] In view of the defects existing in the prior art, the purpose of the present invention is to propose a stray Current and Track Potential Simulator
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[0035] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.
[0036] figure 1 It is a structural schematic diagram of a stray current and rail potential simulation device according to the present invention, including a current source 1, a first voltage source 2, a second voltage source 3, a first bidirectional variable resistance module 4, a second bidirectional variable Resistance module 5, the third bidirectional variable resistance module 6, the fourth bidirectional variable resistance module 7, the fifth bidirectional variable resistance module 8, the sixth bidirectional variable resistance module 9 and fixed value resistor 10, the composition of each module and ...
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The invention discloses a stray current and orbit potential simulation device; the stray current and orbit potential simulation device comprises a current source, a first voltage source, a second voltage source, a bidirectional variable resistor module and a constant value resistor; the current source is an alternating current source and is used for simulating the current of a train; the first voltage source is used for simulating a traction substation on the left side of a power supply section; the second voltage source is used for simulating a traction substation on the right side of the power supply section; the bidirectional variable resistor module is used for simulating longitudinal resistance of a walking track; and the constant value resistor is simulating resistance to ground of the walking track. By adjusting the resistance value of the bidirectional variable resistor module, stray current and orbit potential simulation at different positions in the power supply sections canbe realized. The device has the advantages of being simple in structure, capable of simulating the diverse operation conditions of trains and being suitable for grounding and floating systems and thelike.
Description
technical field [0001] The invention relates to the technical field of electrified rail transit and power electronic converters, in particular to a stray current and rail potential simulation device. Background technique [0002] In the DC traction system of rail transit, for the consideration of economic operation, the running rail is also used as the return path of the train traction current. Due to the impossibility of complete insulation between the running rail and the ground, part of the traction current leaks into the ballast bed, and then flows into the running rail or the negative pole of the traction substation through media such as ballast bed structural steel bars, tunnel structural steel bars, and underground buried metal pipelines. It is called stray current, also known as stray current. Stray currents will cause serious corrosion to the running rails and metal structures near the rail transit traction system, resulting in greatly shortened service life of bur...
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IPC IPC(8): G01R31/00
CPCG01R31/008
Inventor 杨晓峰薛皓郑琼林
Owner BEIJING JIAOTONG UNIV