A Ship-to-Shore Pressure Drop Compensation System for Shore Power System
A voltage drop compensation and power system technology, applied in reactive power compensation, AC network voltage adjustment, single-network parallel feed arrangement, etc. Loss and other issues, to achieve stable voltage levels, ensure rapidity, and ensure the effect of accuracy
Active Publication Date: 2021-03-26
澄瑞电力科技(上海)股份公司
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Problems solved by technology
[0003] In the actual use of the shore power system, when the voltage output by the shore power variable frequency power supply is transmitted to the ship through the cable, power loss will occur when the power passes through the cable, and the output transformer, capacitor, switch and other equipment also need to be connected when the power supply is running. A certain amount of energy is generated, so when the shore power supply is transmitted to the ship, different voltage drops will occur, which affects the power supply quality of the shore power system and is not conducive to the safe and stable operation of the shore power system
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[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0049] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0050] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present utility model.
[0051] A ship-to-shore pressure drop compensation system for shore power systems, such as figure 1 As shown...
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The invention relates to the technical field of ship shore power supply, in particular to a ship-shore voltage drop compensation system for a shore power system. The ship-shore voltage drop compensation system comprises a first compensation unit used for obtaining the first active power and the first reactive power of a first part of a cable, processing the first active power and the first reactive power to obtain a first voltage regulation value, and regulating an output voltage value of a variable-frequency power supply according to the first voltage regulation value; a second compensation unit which is used for acquiring the second active power and second reactive power of the cable, processing the second active power and the second reactive power to obtain a second voltage regulation value, and regulating the output voltage value of the variable-frequency power supply again according to the second voltage regulation value after the first compensation unit regulates the output voltage value of the variable-frequency power supply. The technical scheme has the beneficial effects that the line loss and the reactive power of the cable are compensated, the voltage can be accurately adjusted, the optimal output electric energy quality is ensured, and the rapidity and the accuracy of the voltage adjustment are ensured to the greatest extent.
Description
technical field [0001] The invention relates to the technical field of shore power supply for ships, in particular to a ship-shore pressure drop compensation system for a shore power system. Background technique [0002] Nowadays, the use of shore power for ships calling at ports is becoming a development trend. A large number of domestic ports, power plants, passenger ships and other terminals are also vigorously planning and building ship shore power infrastructure. Therefore, vigorously promoting the construction of port shore power systems has far-reaching significance for achieving the long-term goals of environmental protection, low carbon, pollution-free water transportation, and sustainable development. [0003] In the actual use of the shore power system, when the voltage output by the shore power variable frequency power supply is transmitted to the ship through the cable, power loss will occur when the power passes through the cable, and the output transformer, ca...
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IPC IPC(8): H02J3/16H02J3/50
CPCH02J3/16H02J3/50Y02E40/30
Inventor 胡金杭苗亚傅乃超邓近树黄浩
Owner 澄瑞电力科技(上海)股份公司
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