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Nie X.,Beijing Jiaotong University | Zhan Q.,Beijing Sifang Automation Co | Duan G.,Beijing Sifang Automation Co | Yu W.,Central China Power Grid Dispatching Center | Xie X.,Beijing Sifang Automation Co
Dianwang Jishu/Power System Technology | Year: 2014

In general the master station of WAMS system in China is only connected with the PMU with the dispatching of jurisdiction and its monitoring range is only restricted to the directly acquired data, so it is hard to acquaint with dynamic characteristics of power grid in global scope. Meanwhile, there are such troubles as inconsistent data models, insufficient interconnected master stations and less data exchange in traditional interconnection scheme of WAMS. To effectively cope with these troubles, based on the basic platform of technical support system for smart grid dispatching a requester-oriented dynamic data interconnected service architecture is designed, and a neotype interconnection scheme for WAMS dynamic data of trans-dispatching center is researched. Based on existing unique identification method for grid equipments and unified naming method for grid equipments, a modeling approach suitable for WAMS data model is proposed. Besides, the API access interface for real-time data and historical data is expanded to make it supporting the exchange visiting. In the meantime, the technique and protocol for dynamic data compression and transmission are discussed. Finally, the engineering application and performance evaluation test are performed to validate the designed scheme, and the results show that the proposed scheme is feasible.


Qian J.,State Grid Electric Power Research Institute of China | Xu D.,State Grid Electric Power Research Institute of China | Jiang G.,State Grid Electric Power Research Institute of China | Liu T.,Central China Power Grid Dispatching Center | Tang W.,Central China Power Grid Dispatching Center
Dianwang Jishu/Power System Technology | Year: 2012

Offline power system model management technologies is increasingly matured and widely applied in intelligent dispatching systems, however due to following reasons: what the model merging depends too much on the topology of equipment leads to amplify the errors in source model files and the version management technique is imperfect, some of key technologies still need to be improved. The features in maintenance and management of offline power system model for intelligent dispatching are analyzed and a better model merging strategy is proposed. According to boundary characteristics of substations in the model, model splitting and merging are analyzed and handled with by two kinds of granularities: the boundary substations is handled with based on the granularity of equipment topology and other substations based on the granularity of the substation granularity. Such a model splitting/merging strategy simplifies the operation process and improves the quality of the merged model. Based on IEC 61970, the version management of multidimensional model is researched and basic functional modules are defined and the implementation of modules is given. The version management of multidimensional model can meet the demands on management of common information model (CIM) and applied privacy models.


Liu T.,Central China Power Grid Dispatching Center | Zhu C.,Central China Power Grid Dispatching Center | Tang W.,Central China Power Grid Dispatching Center | Zhu Z.,Central China Power Grid Dispatching Center | Li X.,Central China Power Grid Dispatching Center
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2011

The current situation and problems of network modeling of power control and dispatching centers are analyzed. According to the characteristics and reality of Central China Power Grid, a distributed network modeling and real-time data sharing scheme is designed. In this scheme the principle of implementing distributed network modeling and data acquisition in accordance with the dispatching scope is put forward. On the basis of the standardization of the naming of various power equipments, the model merging is done first and then the total network model. The scheme also gives a detailed description of the model merging process, optimization of CIM and real-time data sharing method. © 2011 State Grid Electric Power Research Institute Press.

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