统计研究 ›› 2007, Vol. 24 ›› Issue (4): 63-68.

• 论文 • 上一篇    下一篇

基于面板数据的中国供电行业 规模收益分析

任宇宁 赵国庆   

  1. 中国人民大学经济学院
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-04-15 发布日期:2007-04-15

Based on Panel Data Analysis of Return to Scale in Electricity Supply System

REN Yu-ning , ZHAO Guo-qing   

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-04-15 Published:2007-04-15

摘要: 公共事业企业的规模收益关系到政府监管策略的选择。近年有关中国电力行业运营规模与效率的研究主要集中在电力需求和电价调整方面,本文利用具有面板数据模型形式的成本函数,分析资本和劳动力要素投入对企业规模收益及经营效率的影响程度。主要结论是,电力供应机制的运行受劳动力因素的制约较大,企业规模收益呈递增趋势;劳动力价格对成本的长期影响明显大于短期。

关键词: C-D成本函数, 面板数据模型, 规模收益

Abstract: Returns to scale in public-utility enterprises affect how the government regulate the field. Recently, the study of working scale and efficiency for electricity industry in China focus on electricity demand and price adjustment. The paper uses the panel data model fixed effect cost function model to analyze how capital and labor can affect returns of scale and the working efficiency. To conclude, the system of electricity supply is restricted with labor more than capital, and returns to scale in enterprises are increasing. Price of labor can effect on cost, and the long-term effects are more than short-term effects.

 

Key words: C-D cost function, panel data model, returns to scale