ﺟﺒﺮانﺳﺎزي ﻫﺎرﻣﻮﻧﯿﮏ و ﮐﻨﺘﺮل وﻟﺘﺎژ و ﻓﺮﮐﺎﻧﺲ رﯾﺰﺷﺒﮑﻪ ﻣﺒﺘﻨﯽ ﺑﺮ ﺗﻮزﯾﻊ ﺗﻨﺎﺳﺒﯽ ﺗﻮان ﺑﺎ اﺳﺘﻔﺎده از روش اﻣﭙﺪاﻧﺲ ﻣﺠﺎزي ﺗﻄﺒﯿﻘﯽ

Harmonic Compensation and Micro-Grid Voltage and Frequency Control based on Power Proportional Distribution with Adaptive Virtual Impedance Method

ﺑﻪ دﻟﯿﻞ وﺟﻮد ﻓﺎﺻﻠﻪﻫﺎي ﮔﻮﻧﺎﮔﻮن و ﭘﯿﭽﯿﺪﮔﯽ رﯾﺰﺷﺒﮑﻪﻫﺎ، اﻣﭙﺪاﻧﺲ ﺧﻄﻮط ﺑﯿﻦ ﻓﯿﺪرﻫﺎي ﺗﻮﻟﯿﺪﻫﺎي ﭘﺮاﮐﻨﺪه و ﺑﺎرﻫﺎ ﻣﺘﻔﺎوت اﺳﺖ. از اﯾﻦرو روشﻫﺎي ﮐﻨﺘﺮل اﻓﺘﯽ ﻣﺮﺳﻮم از ﮐﺎراﯾﯽ ﻣﻨﺎﺳﺒﯽ در ﺗﻮزﯾﻊ ﺗﻮان ﺑﯿﻦ واﺣﺪﻫﺎي ﺗﻮﻟﯿﺪ ﭘﺮاﮐﻨﺪه )DG( ﺑﺮﺧﻮردار ﻧﯿﺴﺘﻨﺪ. ﻋﻤﻮﻣﺎً ﺑﻪ دﻟﯿﻞ ﺳﺎدهﺳﺎزي، اﻣﭙﺪاﻧﺲ ﺧﻄﻮط ﺑﻪﺻﻮرت ﻣﺨﺘﻠﻂ ﻣﺪ ﻧﻈﺮ ﻗﺮار ﻧﻤﯽﮔﯿﺮد. ﺷﺮاﯾﻂ ﺑﯿﺎن ﺷﺪه ﺗﺎ ﺣﺪ زﯾﺎدي دﻗﺖ و ﺳﺮﻋﺖ ﭘﺎﺳﺦ دﯾﻨﺎﻣﯿﮑﯽ ﺳﯿﺴﺘﻢ ﮐﻨﺘﺮﻟﯽ را ﮐﺎﻫﺶ ﻣﯽدﻫﺪ. در اﯾﻦ ﻣﻘﺎﻟﻪ، ﺟﺒﺮانﺳﺎزي ﻫﺎرﻣﻮﻧﯿﮏ، وﻟﺘﺎژ و ﻓﺮﮐﺎﻧﺲ رﯾﺰﺷﺒﮑﻪ ﺑﺎ روش ﮐﻨﺘﺮل اﻣﭙﺪاﻧﺲ ﻣﺠﺎزي ﺗﻄﺒﯿﻘﯽ ﻣﺒﺘﻨﯽ ﺑﺮ ﺗﻮزﯾﻊ ﻣﺘﻨﺎﺳﺐ ﺗﻮان اراﺋﻪ ﺷﺪه اﺳﺖ. در روش ﭘﯿﺸﻨﻬﺎدي ﮐﺎﻫﺶ ﺿﺮﯾﺐ ﺧﻄﺎي ﺗﻮان اﮐﺘﯿﻮ و ﺗﻮان راﮐﺘﯿﻮ، ﮐﻨﺘﺮل ﻫﺎرﻣﻮﻧﯿﮏ وﻟﺘﺎژ و ﺟﺮﯾﺎن در دو ﺣﺎﻟﺖ اﺗﺼﺎل ﺑﻪ ﺷﺒﮑﻪ اﺻﻠﯽ و ﺟﺰﯾﺮهاي و ﻫﻤﭽﻨﯿﻦ ﮐﻨﺘﺮل وﻟﺘﺎژ و ﻓﺮﮐﺎﻧﺲ ﺑﻪﻣﻨﻈﻮر ﺑﻬﺮهﺑﺮداري ﺑﻬﯿﻨﻪ از رﯾﺰﺷﺒﮑﻪ اراﺋﻪ ﺷﺪه اﺳﺖ. روش ﭘﯿﺸﻨﻬﺎدي ﺑﺪون ﻧﯿﺎز ﺑﻪ ﺑﺮوزرﺳﺎﻧﯽ اﻃﻼﻋﺎت اﻣﭙﺪاﻧﺲ ﻓﯿﺪرﻫﺎ، ﻗﺎﺑﻠﯿﺖ ﺑﻬﺮهﺑﺮداري و ﺗﻮزﯾﻊ ﺑﻬﯿﻨﻪ ﺗﻮان ﺗﺤﺖ ﺷﺮاﯾﻂ ﻣﺨﺘﻠﻒ ﺑﻬﺮهﺑﺮداري ﺑﺎ در ﻧﻈﺮ ﮔﺮﻓﺘﻦ اﻣﭙﺪاﻧﺲ ﻣﺨﺘﻠﻂ را ﻧﯿﺰ دارا اﺳﺖ. ﺑﻪﻣﻨﻈﻮر ﺻﺤﺖﺳﻨﺠﯽ، روش ﭘﯿﺸﻨﻬﺎدي در ﻣﺤﯿﻂ ﻧﺮماﻓﺰار ﻣﺘﻠﺐ/ﺳﯿﻤﻮﻟﯿﻨﮏ ﺳﯿﺴﺘﻢ ﺷﺒﯿﻪﺳﺎزي ﺷﺪه و ﻧﺘﺎﯾﺞ ﺣﺎﺻﻞ از آن ﺑﻪ ﻫﻤﺮاه آﻧﺎﻟﯿﺰ ﭘﺎﯾﺪاري و ﺣﺴﺎﺳﯿﺖ اراﺋﻪ ﺷﺪه اﺳﺖ.

Due to the different distances and complexity of micro-grids, the lines impedance varies between the feeders of the distributed generation and the loads. Therefore, conventional droop control method does not have good efficiency in power distribution between distributed generation (DG) units. Generally, due to simplification, the impedance of the lines is not considered in a complex. The stated conditions greatly reduce the accuracy and speed of the dynamic response of the control system. In this paper, harmonic compensation, voltage and frequency control of micro-grid with adaptive virtual impedance method based on proportional power distribution are presented. In the proposed method, reducing the error coefficient of active power and reactive power, control of voltage and currents’ harmonic in two modes of connection to the main grid and islanded, as well as voltage and frequency control for optimal operation of the micro-grid is presented. The proposed method, without the need to update the impedance information of the feeders, has the capability of optimal operation and power distribution under different operating conditions, taking into account the complex impedance. To validate, the proposed method is simulated in MATLAB/Simulink software environment and the results are presented along with stability and sensitivity analysis