Power grid stability test system containing multiple types of high-penetration new energy based on RTDS and method thereof

Abstract

The invention discloses a power grid stability test system containing multiple types of high-penetration new energy based on an RTDS and a method thereof. The stability test system comprises an energy power grid system, an RTDS real-time digital simulator, a simulation data conversion interface, a stability control apparatus and a man-machine interaction interface HMI which are sequentially connected. The RTDS real-time digital simulator is used for sending a high-penetration new energy simulation signal to the simulation data conversion interface. The simulation data conversion interface is used for carrying out mutual information transmission between data containing a high-penetration new energy simulation result analog quantity and a digital quantity and an actual stability control device. The RTDS real-time digital simulator acquires a data signal through simulation and then transmitting data information to the simulation data conversion interface. The stability control apparatus is used for converting a motion operation instruction via the simulation data conversion interface and then sending to the RTDS real-time digital simulator. The invention aims at establishing an electric-power-system real-time digital simulation platform containing multiple types of new energy, and new simulation and detection means are provided for new-energy grid-connected operation coordination development.

Description

technical field [0001] The invention relates to the technical field of power system stability control, in particular to an RTDS-based stability test system and method for a multi-type high-permeability new energy grid. Background technique [0002] With the advancement of new energy technology in the power system, the scale of multi-type new energy grid connection has further increased, and the increase in the penetration rate of new energy has brought challenges to the safety and stability of the power system. The security and stability control system is one of the most important contents in the three lines of defense of the power system. There are a large number of security devices in the system and the control methods are complicated. Dynamic tests must be carried out through RTDS tests to ensure that the security devices can adapt to system changes and maintain system security. Comprehensive consumption of stable operation and new energy power generation. [0003] The t...

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Problems solved by technology

On the one hand, the safety and stability control system can only be tested under a single-target simulation model to verify the functionality of the safety and stability device, and the conclusions drawn from the test have relatively large limitations.

Models for test simulations often run stably, and cannot include complex working conditions such as multiple operating modes, multiple scenarios, and multiple time scales of the actual system; Multi-scale characteristics, because the system cannot include the response characteristics of multiple types of new energy sources, the simulation test results cannot explain the control characteristics of the safety and stability control device in the multi-type new energy access system, so the comprehensive functions of the safety and stability control device cannot be guaranteed sex

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