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Construction of the linearized state-space model is the key step of eigenvalue analysis for SSO study of power systems with large-scale renewable power generation (RPG) integrated. This paper proposes a novel method to construct the state matrix of the AC/DC hybrid power system with RPG within the discrete-time domain. The continuous-time state-space model of each AC/DC component as well as RPG units in the power system, is discretized together with their corresponding control. The discretized equation of each component is then represented by an equivalent circuit consisting of parallel historical current and conductance. According to the power system configuration, the discrete-time equivalent circuit of the whole AC/DC hybrid system is established, and the nodal analysis method is applied for the construction of the discrete-time state-space model of the power system. In this way, the state matrix can be acquired much more conveniently than that of continuous-time state-space method, which needs topology analysis to find independent state variables of the network from the proper tree. The proposed method has been applied in the eigenvalue analysis for the SSO study of a case system adapted from the AC/DC hybrid transmission system in northwest China. Eigenvalue results are in high accordance with time-domain simulation results in PSCAD/EMTDC. [ABSTRACT FROM AUTHOR]

The initiative participation of wind power generators in power system frequency regulation is an inevitable demand to ensure power system safe operation with large-scale wind power integration. However, it is principally difficult for conventional wind turbines to participate in power system frequency regulation. For this reason, solution to this problem is becoming a hot topic in the current studies. This paper systematically reviews the relevant research progresses in the control strategies and the capability assessment of using wind power generators in the power system frequency regulation, including the comparing among the emulating inertia control, the droop control, the rotor speed control, the pitch angle control and the coordinated control. Also, future research in this area is pointed out in the paper. [ABSTRACT FROM AUTHOR]

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Investigates the impact of direct foreign investments (DFI) on foreign trade and transfer pricing trends in China. Exploration of transfer pricing by multinational corporations; Presentation of theoretical views on the impact of DFI on the country's economy; Study of the role of foreign-invested enterprises in China's foreign trade.

This paper presents a study of the technical efficiency of industries in a transitional economy: China. Using data for 28 manufacturing industries across 29 provinces and the Data Envelopment Analysis approach, the technical efficiency of each industry is measured and compared across regions and provinces. The determinants of differential technical efficiency performance are analysed, with a particular focus on the impact of trade orientation and foreign investment. Trade openness is found generally to have a positive effect on technical efficiency. [ABSTRACT FROM AUTHOR]

This article presents an in-depth study of the regional dualistic growth pattern of the Chinese economy from 1984 to 1993. After opening up its economy to the rest of the world in 1979, China has been able to double its gross domestic product (GDP) twice by 1994, with an average annual real growth rate of 10.5%. However, Chinese economic growth has been uneven as is evident from disparate growth rates especially between the Eastern (coastal) and the Western (far inland) regions of the country. The imbalance in economic growth between the two regions has been exacerbated since China further opened the coastal region in 1984. For instance, the economic growth rate of the Eastern region was 11.4% on average from 1984 to 1993, while it was 8.9% for the Western region. This led to an increased economic gap between the two regions. In 1993 the GDP per capita of the Eastern region was 2.3 times as much as that of the Western region. The economic disparity between the two regions can be attributed to many factors, such as economic reforms and an open-door policy in favour of the Eastern region, differences in economic structures and resource conditions, a coast-orientated regional policy, and consequently differential impacts of foreign trade and foreign investment. The uneven growth and resulting increased interregional economic disparity in China have become a new focus for development economists and policy makers. Several studies have examined the influence of economic reforms and regional policy on regional economic development in China. Another group of scholars has studied regional impacts of foreign trade and foreign direct investment (FDI) in particular. These scholars have found that the impact of foreign trade and FDI on the economic development of China are different between the Eastern and Western regions.

Presents a comparative analysis of the characteristics of direct foreign investment (DFI) in China. Suspicion that not all foreign investment is equally beneficial; Primary sources of DFI; Investigation of the entry modes of investors; Discussion on the factors behind the differences among major investing countries and regions.

Examines the impact of direct foreign investment (DFI) on the inter-regional economic disparity in China. Reference to several studies conducted on the influence of economic reforms and regional policy; Regional pattern of DFI distribution in China during 1979 to 1993; Examination of intra-provincial economic disparity.

Presents information on a study which investigated the impact of macroeconomic of direct foreign investment (DFI) in China during the 1979-96. Average growth rate of the Chinese economy during this period; What has attributed to the growth; Performance of DFI; What is DFI.

This paper investigates the impact of foreign direct investment (FDI) on the export performance of China at the provincial level. First, it presents a theoretical discussion of the impact of FDI on foreign trade, and then an empirical study of the impact of FDI on the export performance of regions in Chin. It has been found that the impact of FDI on exports differs across three macro-regions in China. The effect is stronger in the coastal region than in the inland regions. Although FDI shows a positive and significant impact on exports from the central region, its impact on the western region is found to be insignificant. [ABSTRACT FROM AUTHOR]