RTDS simulation system of static variable frequency system

Abstract

The invention discloses an RTDS simulation system of a static variable frequency system. The RTDS simulation system comprises a real-time digital simulator RTDS, signal interface equipment and static variable frequency control protection equipment, wherein the real-time digital simulator RTDS is connected with the signal interface equipment through an optical fiber, and the signal interface equipment is connected with the cable of the static variable frequency control protection equipment. The RTDS simulation system of the static variable frequency system can check the static variable frequency system capacity, main loop topology, unit start-up time and the like, test the function of static variable frequency system control and protection equipment and test control parameters; when the system topology is changed or the primary system parameters are changed, the experiment can be performed after correcting a simulation model.

Description

technical field [0001] The invention belongs to the field of power electronics technology and real-time simulation of power control systems, and in particular relates to an RTDS simulation system for a static frequency conversion system. Background technique [0002] Static frequency conversion systems, such as figure 1 As shown in the primary circuit diagram, the three-phase fully-controlled rectifier bridge and the DC reactor form a DC current source. By controlling the inverter bridge, the DC current is converted into an AC current with a gradually increasing frequency and input to the stator of the synchronous motor, so that the motor starts from a standstill. Speed ​​up to the required speed. Static frequency conversion systems are widely used in the start-up of reversible units in pumped storage power stations before they switch to pumping conditions. During the implementation of the project, the static frequency conversion system has a series of capacity design, mai...

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Problems solved by technology

For capacity design, main circuit topology selection, and unit start-up time, it can be calculated directly, but the calculation results still need to be checked; at present, there is no one that can perform static frequency conversion system control and protection equipment functions before field tests Methods of verification, control parameter setting, protection function verification and protection setting value setting; For static frequency conversion system faults, due to equipment safety considerations, it is impossible to perform actual simulation on field equipment. Currently there is no method that can simulate system faults method

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