a new power system的用法和样例：
- A new power plant is soon to go on stream.
- A new power plant was built last month.
- Study of the communication system Plan for a new power plant.
- At present the construction of a new power plant gets under way.
- A new power station was built in their hometown last year.
- A new embedded zerotree wavelet based data compression method was proposed and applied to power system malfunction data compression.