Abstract
To strengthen the integration of the primary and secondary systems, a concept of Cyber Physical Systems (CPS) is introduced to construct a CPS in Power Systems (Power CPS). The most basic work of the Power CPS is to build an integration model which combines both a continuous process and a discrete process. The advanced form of smart grid, the Active Distribution Network (ADN) is a typical example of Power CPS. After designing the Power CPS model architecture and its application in ADN, a Hybrid System based model and control method of Power CPS is proposed in this paper. As an application example, ADN flexible load is modeled and controlled with ADN feeder power control by a control strategy which includes the normal condition and the underpowered condition. In this model and strategy, some factors like load power consumption and load functional demand are considered and optimized. In order to make up some of the deficiencies of centralized control, a distributed control method is presented to reduce model complexity and improve calculation speed. The effectiveness of all the models and methods are demonstrated in the case study.
Highlights
With the rapid development of network technology, and increasing requirements for accuracy and efficiency of industry control, the industry needs to strengthen information acquisition, application and coordination control with the hierarchy-distributed control system
When a bigger power shortage occurs in the feeder, Area Power of this feeder severely deviates from the target, so the main purpose at this time is to reduce Feeder Power deviation by flexible load coordination control
The distribution Active Distribution Network (ADN) flexible load control model and method of underpowered condition is tested by the case in 3.4
Summary
With the rapid development of network technology, and increasing requirements for accuracy and efficiency of industry control, the industry needs to strengthen information acquisition, application and coordination control with the hierarchy-distributed control system. Besides the influence of information system, some researches consider that continuity and discrete are the main attributes of Cyber and Physical system respectively They try to rebuild power grid model according to Hybrid System theory which describes both the continuous dynamic and discrete state, the object-oriented hybrid power system model library is developed [17], and sliding mode control based on the hybrid models can be applied to DG integrated shipboard power grid [18]. This paper builds a Hybrid System based modeling structure for Power CPS which is beneficial for analyzing the interactive mechanism between information and the primary system. According to the modeling structure, an integration model method and its application are studied to optimally and predictively control the power system by an example of a flexible load control in ADN.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
