This paper presented an extensive analysis of dynamic change of power flow between distributed generators and loads in the situation of low grid voltage. And, a control strategy with energy storage to balance the power flow was proposed. First, the constant power control strategy of the distributed generators...

Research of grid contact is a hot topics of electrical power system. Serious aging of grid contacts will bring accidents or even fire. At present, the main research method of contact aging is grey model. It has the characteristics of convenient calculation and high prediction accuracy. However, the locality...

Although China's electricity market reform has achieved some results, it still not fully enter into the dispatch scheduling system. The new born technology blockchain has been widely realized, it also appeared many research in energy internet field and received some achievement. In this case, this paper...

Multi-level inverter is now becoming an efficient and promising technology in sorts of applications, especially in high level voltage inverters. However, the unbalanced voltages between two DC-link capacitors while operating the Neutral Point Clamped (NPC) three-level inverters is an inherent problem,...

Coal, petroleum and natural gas will still be the basis of economic development for a long time. However, with a rapider consumption speed, these fossil fuels will be exhausted in the near future. In addition, the usage of these fossil fuels can also cause environmental pollution and greenhouse effect....

Substation monitoring and control system generally consists of several unsupervised PC units. Such configuration is not suitable for running large commercial database, so the integration of dispatching system and transformer substation requires a lightweight relational database, and has a strict need...

This is Part I of a two-part paper which presents a methodology for fault location and isolation and service restoration for power distribution grids. Concepts of node, region, connected sub-grid, and simplified model of distribution grids are introduced. A simplified load flow analysis is discussed...

Energy storage system (ESS) is integrated to a microgrid for managing the intermittent power from the renewable energy source. The battery energy storage system (BESS) is widely used in a microgrid, but it has various factors such as a high current of discharge/charge that affect the lifespan and quality...

Under the background of the implementation of the Rural Revi-talization Strategy proposed in the report of the 19th National Congress of CPC, with regard to the unbalanced and insufficient development on both agriculture and village sides, this paper firs

Modular multi-level converter has become one of the most prospective converter technologies in HVDC transmission. According to the topological structure and mathematical model of MMC, this paper proposes a multi-point DC voltage control strategy based on voltage margin control, and designs the corresponding...

IEC 62439 defines the parallel redundancy protocol (PRP) which offers zero disruption time for network communication. This paper evaluates the reliability of PRP based substation process bus considering protection functions. Two typical process bus solutions are discussed for a typical transmission substation....

At present, the main research methods are Matlab/simulink and Ansoft maxwell. When modeling and simulating with Matlab/simulink software, there will be shortcomings in the simulation as the special structure of the model and material parameters cannot be set. The modeling and simulating with Ansoft maxwell...

A co-doping host layer 4,4’-N,N’-dicarbazole-biphenyl (CBP) and tris-(8-hydroxyqunoline)aluminum(Alq), was incorporated tris (2-Phenylpyridine) iridium [Ir(ppy)3] doped into host as the emitting layer (EML) based organic light-emitting device. Such a structure helps to increase the energy transfer from...

This paper presents the development of an underwater plasma for wastewater treatment. A treatment reactor made of acrylic with multiple stainless-steel rods as the cathode electrode and stainless-steel plate as the ground was used. To find the suitable frequency for treatment, 25 kV pulse high voltage...

We present the analytical relations and the order of their introduction in the hyperbolic method algorithm designed for the generation of the optimal estimates of the radio sources coordinates and for the evaluation of the potential accuracy with which they are measured in the time-difference of arrival...