Power hardware-in-the-loop (PHIL) interface system suitable for active tested system

Abstract

The invention relates to a PHIL interface system suitable for an active tested system and used for a connection of a virtual electrical system (VES) and the active tested system. The interface system comprises a forward driving unit, a feedback unit and a signal observation unit, wherein the forward driving unit is connected with the VES and the active tested system respectively; the feedback unit is connected with the active tested system and the signal observation unit respectively; the VES transmits voltage and power information to the forward driving unit which amplifies the voltage and power information and transmits the information to the active tested system; the feedback unit obtains and tracks the dynamic information of the active tested system in real time and transmits the information to the signal observation unit; and the signal observation unit displays the response of the active tested system in the VES according to the received information. Compared with the prior art, the interface system has the advantages that interface parameters can be adjusted flexibly, the simulated effect is good, the system is suitable for the active tested system, and the like.

Description

technical field [0001] The invention relates to the field of interface technology in power system simulation, in particular to a PHIL interface system suitable for an active system under test. Background technique [0002] In the theoretical research and equipment development of modern power systems, digital-physical hybrid simulation has been more and more widely used. Digital-physical hybrid simulation, also known as hardware-in-the-loop (HIL), this method puts the actual physical device or system (Hardware under test, HUT) in the virtual power established by the real-time digital simulation system. System (Virtuai Electrical System, VES) in the closed-loop simulation. [0003] The HIL system is divided into signal type hybrid simulation (Control Hardware-in-the-Loop, CHIL) and power connection type hybrid simulation (Power Hardware-in-the--loop, PHIL). Among them, CHIL means that only low-power control signals are transmitted between the digital simulation system and th...

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Problems solved by technology

[0009] 1) The existing interface cannot flexibly adjust the interface parameters according to the dynamic information of the HUT to improve the simulation effect;

[0010] 2) When the HUT is active, there is no interface that can simultaneously ensure the simulation accuracy of VES and HUT and take into account the requirements of simulation stability, which is difficult to meet the research and test requirements of active HUTs such as microgrids

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