Before revision:  The effectiveness of DeepOPF-V is validated by case studies of several IEEE test systems . Compared with existing approaches , DeepOPF-V achieves a state-of-art computation speedup up to three orders of magnitude and has better performance in preserving the feasibility of the solution.
After revision:  The effectiveness of DeepOPF-V is validated by case studies of several IEEE test systems . Compared with existing approaches , DeepOPF-V achieves a state-of-art computation speedup up to three orders of magnitude and comparable performance in optimality gap and preserving the feasibility of the solution.