Guangdong Provincial Key Laboratory of smart grid technology

Guangzhou, China

Guangdong Provincial Key Laboratory of smart grid technology

Guangzhou, China
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Xia C.-J.,South China University of Technology | Liang J.-J.,South China University of Technology | Song X.-D.,Guangdong Power Grid Corporation | Song X.-D.,Guangdong Provincial Key Laboratory of Smart Grid Technology | Yu N.-H.,Guangdong Power Grid Corporation
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | Year: 2016

The PV access to distribution networks can cause the volatility and uncertainty of load to increase, which has a certain effect on the capacity planning of power transmission and distribution equipment. In this paper, on the basis of the probability analysis of both PV power and load in longitudinal moment, supply load is reduced by introducing a risk parameter. Then, energy storage is taken as a measure to shift electricity from peak periods to off-peak periods, so as to handle the probabilistic risk after reducing the supply load. On the basis of this principle, the energy storage capacity is optimized, and the balance between risk and economics as well as the risk factor corresponding to a maximum economic benefit is achieved. Case analyses show that the proposed method in this paper can bring certain economic benefits for the device capacity planning of distribution networks. © 2016, Editorial Department, Journal of South China University of Technology. All right reserved.


Zheng W.,Guangdong Electric Power Research Institute | Zheng W.,Guangdong Provincial Key Laboratory of Smart Grid Technology | Chen X.,Guangdong Electric Power Research Institute | Chen X.,Guangdong Provincial Key Laboratory of Smart Grid Technology | And 2 more authors.
China International Conference on Electricity Distribution, CICED | Year: 2014

In modern power distribution utility, GIS and DMS address the same physical network and share a great amount of data. Nowadays, most of them still exist as separate systems and on different platforms. With the continuing growth of data and evolution of the systems, it requires to establish interfaces and workflows between GIS and DMS for exchanging necessary data with a lower maintenance cost and, in another hand, to ensure data consistency. This paper presents the problems when generating single-line diagram (orthogonal maps) from GIS to DMS and the model exchange between GIS and DMS. DMS utilizes GIS information to automatic on-line generation of graphical representations for 10kV feeders. For a new DMS installation, it generates the single-line diagram to facilitate the SCADA functions. Considering topology of distribution network is under significant change subjected to civil projects and the growth of power consumptions, geo-schematics drawings in the GIS should be converted into single-line diagram to adapt to the distribution network operators and update the DMS in a specified period of time without manual interference. Finally, the management expectations, benefits of the graph and model exchange technologies are also discussed. © 2014 IEEE.


Song X.D.,Guangdong Power Grid Corporation | Song X.D.,Guangdong Provincial Key Laboratory of smart grid technology | Yu N.H.,Guangdong Power Grid Corporation | Chen Z.,Nanjing Southeast University | Zong P.P.,Nanjing Southeast University
Advanced Materials Research | Year: 2014

This paper presents an active control method of hierarchical consistency to control distributed generation when the load changes in active distribution network. Each control objectives need to interact with the neighboring targets, and it can achieve the goal of global optimal control without global information. The method classifies the DG nodes, and achieves the ultimate goal of consistency based on the information communication of local DG by monitoring the power of main DG node and other distributed generation nodes in each layer. The efficiency and feasibility of the strategy are demonstrated by IEEE26 system. © (2014) Trans Tech Publications, Switzerland.


Song X.D.,Guangdong Power Grid Corporation | Song X.D.,Guangdong Provincial Key Laboratory of smart grid technology | Yu N.H.,Guangdong Power Grid Corporation | Zhang X.P.,Guangdong Power Grid Corporation | And 2 more authors.
Advanced Materials Research | Year: 2014

The active distribution networks (ADN) which based on the information communication technology and the advanced measuring instruments, provides a solution for the access of the high permeability DER. Electricity price, as an important means of operation for the distribution networks, has its significance to be analyzed. The paper makes a brief discussion about the operation mode of ADN, demonstrates the rationality to select electricity value equivalent price and real-time price as the feed-in tariff and operation electricity price, and validated by simulation. © (2014) Trans Tech Publications, Switzerland.


Xie G.,Guangdong Power Grid Corporation | Xie G.,Guangdong Provincial Key Laboratory of Smart Grid Technology | Hu Y.,Guangdong Power Grid Corporation | Hu Y.,Guangdong Provincial Key Laboratory of Smart Grid Technology | And 5 more authors.
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2015

With each profession independently developed and its model parameter library in the dispatch center maintained by itself, poor consistency among multi-source parameters of power grid for lack of a coordination mechanism is inevitable. In view of this, a fusion method for multi-source and heterogeneous parameters of power grid is proposed. The concept of the object name matching knowledge database is put forward, and characteristic vectors and matching rules for three kinds of object names are refined, such as AC lines, transformer windings and generators, which have been applied in the object name matching for the same profession of two levels and different professions of the same level, realizing mutual recognition and correspondence among the parameter names of different systems. The differential index of the parameter is introduced to measure the difference among different sources of parameters, and the organic fusion for multi-source and heterogeneous parameters has been achieved through vertical parameter fusion and transverse parameter fusion, significantly improving the consistency among the parameters from different sources. This method has an important role in improving the consistency among parameters from different professions and enhancing the quality of basic data, which has been proved by actual application in the 220 kV and above power grid of China Southern Power Grid. ©, 2015, State Grid Electric Power Research Institute Press. All right reserved.


Liu Z.,Guangdong Electric Power Research Institute | Liu Z.,Guangdong Provincial Key Laboratory of Smart Grid Technology | Hu Y.,Guangdong Electric Power Research Institute | Hu Y.,Guangdong Provincial Key Laboratory of Smart Grid Technology | And 4 more authors.
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2015

Planning and design for microgrid is one of the key technology. Comprehensive optimization (including combination optimization and capacity optimization) and dispatch optimization for distributed generations (DG) are studied. Based on the characteristics of DGs, a two-stage optimal planning and design model for microgrid is presented, which can apply to both stand-alone microgrid and grid-connected microgrid. For the first stage, multi-objective genetic algorithm based on non-dominated sorting genetic algorithm II (NSGA-II) is used to calculate the optimal system configuration, while the mixed integer linear programming (MILP) is used to deal with the dispatch optimization in the second stage. Using the presented model, a case study is made for stand-alone microgrid and grid-connected microgrid respectively, and the validity of the method is verified. ©, 2015, Power System Protection and Control Press. All right reserved.

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