Charging system for urban bus wherein an overhead power supply line (5) comprising two cables (7a and 7b) receives a power supply from a source (2) of charging voltage. A urban bus is provided with a pantograph (10) provided with shoes (14a, 14b) which can touch the respective cables (7a, 7b) to provide a charging current to the batteries (16) of the vehicle. A power line carrier generator PLC 30 enters a high-frequency and reduced energy signal s(t) in the electrical connection comprising the two cables (7a and 7b) and the conductors (14a, 14b) of the pantograph (10) coupled to the cables (7a and 7b). A unit (33) is provided which controls whether the signal sR(t) received from the vehicle (9) complies with, is proportionate, appropriate for the impedance Z(ω) which is expected in case of proper electrical connection in the electrical connection. The unit (33) is adapted to obtain the automatic interruption of the electrical connection when an unexpected change in the signal sR(t) with respect to the expected signal is detected.
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机译：用于城市公交车的充电系统，其中包括两条电缆（7a和7b）的架空电源线（5）从充电电压源（2）接收电源。市区公交车设有受电弓（10），受电弓（10）配备有鞋（14a，14b），该鞋可以接触相应的电缆（7a，7b）以向车辆的电池（16）提供充电电流。电力线载波发生器PLC 30在包括两个电缆（7a和7b）和电缆的导体（14a，14b）的电连接中输入高频且能量降低的信号 s（t）。受电弓（10）耦合到电缆（7a和7b）。提供了一个单元（33），该单元控制从车辆（9）接收的信号s R （t）是否与所期望的阻抗Z（ω）相称，适当。电气连接中的正确电气连接。当检测到信号s R （t）相对于预期信号发生意外变化时，单元（33）适于获得电连接的自动中断。
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