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1. Roads, subways, power grids, and dams were constructed; cities were refurbished.

2. Hit by heavy storm, the power grid can not function properly.

3. The electrical power grid is particularly vulnerable to these extra currents, which can infiltrate high-voltage transmission lines, causing transformers to overheat and possibly burn out.

4. With the expansion of power grid and the increase of the transmission voltage grade, the status of relay protection in power system is becoming more and more important.

5. This research includes two parts:electrical source planning and power grid expanding planning. Reasonable grid is important to insure power system in safety and stabilization.

6. Demand - side management DSM can improve power grid load property.

7. Wide work voltage range,(sentencedict.com/power grid.html) strong ability in adapting power grid.

8. The power grid has basically been the same for the better part of a century, says Ian Bowles, Massachusetts' secretary of energy and environmental affairs. That is, until the smart grid.

9. Analysis of Northwest China Power Grid shows that the presented indices are valid in practice.

10. National power grid , vice president of Beijing Economic and Technology Research Institute, Hu Zhaoguang coMMented.

11. The post-contingency small-signal stability region of power grid is analyzed for its economic operation.

12. Through the development of the power grid there appears high - low loop network.

13. Power grid is weak in 3N areas, wind power is far away from load center.

14. The stability of Shandong power grid as preliminary receiving end is simulated and analyzed.

15. The short-circuit capacity of power grid and the magnitude of short-circuit current increase continuously with the growth of power system's capacity.

16. Based on the Wuli-Shili-Renli(WSR) system methodology, the risk analysis of the power grid project financial lease is divided into three stages: Wuli, Shili and Renli.

17. High - performance, low - cost superconducting wires offer numerous advantages for electric power grid applications.

18. Powerformer is a new kind of high - voltage generator[sentencedict.com], which can be power grid directly.

19. This paper introduces a black - start test in Nanjing power grid.

20. The short circuit current of large load center that excesses the regulation standard seriously endangers security and stability of power grid.

21. However, in these civil establishments mostly used in single-phase inductive load, because of its low power factor, lag in reactive power grid in a larger proportion.

22. In order to reinforce the frequency stability of Yunnan power grid, the update and field tests of generator primary frequency control function have been carried out since 2005.

23. Microgrid offers a new idea to solve the technical challenge brought by the interconnection of distributed generation and reduce the affects of natural disaster such as earthquake on power grid.

24. Reliability level of HVDC power transmission systems becomes an important factor impacting entire power grid.

25. Multiple DC transmission lines were rooted in Shanghai, the load center in Southeastern China, which had injected vitality into the development of the Shanghai Power Grid.

26. The monopolar ground circuit operation mode of DC transmission system gives rise to excessive vibration and noise of some transformers in the power grid, which impacts the safety of equipment.

27. In this paper , abductive reasoning was introduced into power grid diagnosis and alarm.

28. A series hybrid active power filter for aeronautical variety - frequency power grid is studied.

29. Recommend reasons: the company's holding subsidiaries engaged in voltage insulators, the beneficiary railways, power grid construction.

30. The proposed method has been applied AGC system of Fujian power grid.