Parallel AC/DC power distribution system
A power distribution system, AC and DC technology, applied in the power field, can solve problems such as flexibility limitations, and achieve the effects of improving stability, enhancing power flow regulation, and enhancing stability
Inactive Publication Date: 2017-01-11
GUANGDONG UNIV OF TECH
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Problems solved by technology
In the case of natural power flow, the power transmitted by lines or outgoing lines cannot be controlled artificially, so the flexibility of bus distribution and control of outgoing line transmission power is greatly limited
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] The core of the present invention is to provide a parallel AC and DC power distribution system.
[0026] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] figure 2 A circuit diagram of a parallel AC / DC power distribution system provided by ...
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The invention discloses a parallel AC / DC power distribution system, which comprises a rectifier, a main inverter, a slave inverter, a first switch and a second switch, wherein the rectifier is connected with an AC leading-out terminal of a generator set for converting AC outputted by the generator set to DC to be transmitted to a DC bus; the main inverter is connected with the DC bus for converting DC to AC to be transmitted to an AC bus; the slave inverter is connected with the rectifier for converting DC outputted by the slave inverter to AC to be directly transmitted to a transmission line; the first switch is arranged between the AC leading-out terminal of the generator set and the transmission line; and the second switch is arranged between the AC bus and the transmission line. Thus, the system can better control tidal current at the leading-out terminal of the generator set through the AC rectifier in an adjusting ability range, and the operation stability of the power plant unit is thus enhanced. In addition, the main inverter and the slave inverter are redundancy of each other, and the stability of the transmission system is improved.
Description
technical field [0001] The invention relates to the field of electric power technology, in particular to a parallel AC and DC power distribution system. Background technique [0002] The power system is mainly composed of five parts: power generation, power transmission, power transformation, power distribution, and power consumption. The safe and economical operation of power plants and substations plays a vital role in the stable operation of the entire power system. Therefore, the rational design of the electrical power distribution system of a power plant or substation plays an important role in the safe and economical operation of the power grid. The functional parameters, basic raw data, operational reliability and economical requirements of the substation are closely related, and have a great influence on the selection and layout of electrical appliances, relay protection and control methods. Therefore, the design of power distribution system is particularly importan...
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IPC IPC(8): H02J3/02
CPCH02J3/02
Inventor 吴杰康
Owner GUANGDONG UNIV OF TECH