1.NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China;2.NARI Technology Co., Ltd., Nanjing 211106, China

With the advancement of new power system construction, the security and stability control system presents the trend that the number of control objects increase, the control range enlarges, and the coupling and complexity rise. The existing engineering test verification methods cannot meet the test verification requirements of the future security and stability control systems. Considering that the digital twin technology has the characteristics of high fidelity, real time, and interactivity, and combined with the connotation, model, and architecture of digital twin technology, the architecture of the test verification based on digital twin for the security and stability control system is proposed. Finally, the key technologies involved are prospected.