ﻣﺪﯾﺮﯾﺖ ﺗﻮان راﮐﺘﯿﻮ در ﺷﺒﮑﻪﻫﺎي ﺗﻮزﯾﻊ ﻓﺸﺎر ﺿﻌﯿﻒ ﺑﺎ اﺳﺘﻔﺎده از ﻗﺎﺑﻠﯿﺖ و اﺿﺎﻓﻪ ﻇﺮﻓﯿﺖ اﯾﻨﻮرﺗﺮﻫﺎي ﻫﻮﺷﻤﻨﺪ ﻣﻨﺎﺑﻊ ﻓﺘﻮوﻟﺘﺎﺋﯿﮏ

Reactive Power Management in Low Voltage Distribution Networks Using Capability and Oversizing of PV Smart Inverters

از آﻧﺠﺎﯾﯽ ﮐﻪ ادﻏﺎم ﻣﻨﺎﺑﻊ ﻓﺘﻮوﻟﺘﺎﺋﯿﮏ )PV( ﺧﻮرﺷﯿﺪي در ﺷﺒﮑﻪ ﺗﻮزﯾﻊ ﻓﺸﺎر ﺿﻌﯿﻒ در ﺳﺎلﻫﺎي اﺧﯿﺮ ﺑﻪ ﺳﺮﻋﺖ رو ﺑﻪ اﻓﺰاﯾﺶ اﺳﺖ، اﺳﺘﻔﺎده از ﻗﺎﺑﻠﯿﺖ اﯾﻨﻮرﺗﺮﻫﺎي ﻣﻨﺎﺑﻊ ﻓﺘﻮوﻟﺘﺎﺋﯿﮏ ﻣﯽﺗﻮاﻧﺪ ﻓﺮﺻﺘﯽ ﺑﺮاي ﺑﻬﺒﻮد ﺷﺎﺧﺺﻫﺎي ﻓﻨﯽ و اﻗﺘﺼﺎدي از ﻃﺮﯾﻖ ﻣﺪﯾﺮﯾﺖ ﺗﻮان راﮐﺘﯿﻮ در ﺷﺒﮑﻪﻫﺎي ﺗﻮزﯾﻊ وﻟﺘﺎژ ﭘﺎﯾﯿﻦ ﺑﺎﺷﺪ. اﯾﻦ ﻣﻘﺎﻟﻪ ﺟﻬﺖ ﺑﻬﺒﻮد اﻓﺖ وﻟﺘﺎژ و اﻓﺰاﯾﺶ درآﻣﺪ ﻧﺎﺷﯽ از ﻓﺮوش ﺑﺮق، ﺑﺎ اﺳﺘﻔﺎده از ﻗﺎﺑﻠﯿﺖ اﯾﻨﻮرﺗﺮ PV و ﺧﺎزن ﺛﺎﺑﺖ، ﻣﺪل ﺑﻬﯿﻨﻪاي ﺑﺮاي ﻣﺪﯾﺮﯾﺖ ﺗﻮان راﮐﺘﯿﻮ ﭘﯿﺸﻨﻬﺎد ﻣﯽﮐﻨﺪ. در اﯾﻦ روش ﻇﺮﻓﯿﺖ ﺑﻬﯿﻨﻪ اﯾﻨﻮرﺗﺮ PV ﻫﻤﺰﻣﺎن ﺑﺎ ﻣﮑﺎن و ﺗﻌﺪاد ﺧﺎزن ﺛﺎﺑﺖ ﻣﺸﺨﺺ ﻣﯽﺷﻮد ﺗﺎ ﺳﺮﻣﺎﯾﻪﮔﺬاري ﺑﺮاي اﯾﻨﻮرﺗﺮ PV، ﺧﺎزن ﺛﺎﺑﺖ و ﻫﺰﯾﻨﻪ ﻋﻤﻠﯿﺎﺗﯽ ﺣﺪاﻗﻞ و درآﻣﺪ ﻓﺮوش ﺑﺮق ﺣﺪاﮐﺜﺮ ﮔﺮدد. در اﯾﻦ راﺳﺘﺎ، ﻃﻮل ﻋﻤﺮ و ﻫﺰﯾﻨﻪ اﺿﺎﻓﻪ ﻇﺮﻓﯿﺖ اﯾﻨﻮرﺗﺮ PV، ﺟﻬﺖ ارزﯾﺎﺑﯽ ﻓﻨﯽ و اﻗﺘﺼﺎدي ﺳﺎﻻﻧﻪ ﻟﺤﺎظ ﻣﯽﮔﺮدد. در اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﻣﻌﺎدﻻت ﭘﺨﺶ ﺑﺎر ﻫﻤﺮاه ﺑﺎ ﻣﺤﺪودﯾﺖﻫﺎي ﻓﻨﯽ در ﯾﮏ ﻣﺪل ﺑﺮﻧﺎﻣﻪرﯾﺰي ﻣﺨﺮوﻃﯽ ﻣﺮﺗﺒﻪ دوم ادﻏﺎم ﺷﺪهاﻧﺪ. دو ﺷﺒﮑﻪ ﺗﻮزﯾﻊ ﻓﺸﺎر ﺿﻌﯿﻒ ﺑﺎ دﯾﺘﺎﻫﺎي واﻗﻌﯽ و ﺑﺎ اﺳﺘﻔﺎده )ﮐﺪﻧﻮﯾﺴﯽ( از ﻧﺮماﻓﺰار ﻣﺘﻠﺐ ﺑﻪ ﻣﻨﻈﻮر ﻧﺸﺎن دادن اﺛﺮ ﺑﺨﺸﯽ ﻣﺪل ﭘﯿﺸﻨﻬﺎدي ﺷﺒﯿﻪﺳﺎزي ﺷﺪه اﺳﺖ. ﻣﻘﺎﯾﺴﻪ روش ﭘﯿﺸﻨﻬﺎدي ﻣﺪﯾﺮﯾﺖ ﺗﻮان راﮐﺘﯿﻮ ﺑﺎ روشﻫﺎي ﻣﺮﺳﻮم، ﺗﻐﯿﺮات ﻗﺎﺑﻞ ﺗﻮﺟﻪ ﻣﻄﻠﻮﺑﯽ، ﺑﺮاي ﺳﺮﻣﺎﯾﻪﮔﺬاري، ﻫﺰﯾﻨﻪ ﺗﻠﻔﺎت اﻧﺮژي، ﺑﻬﺒﻮد ﺷﺎﺧﺺ اﻧﺤﺮاف وﻟﺘﺎژ و درآﻣﺪ ﻓﺮوش ﺑﺮق را ﻧﺸﺎن ﻣﯽدﻫﺪ.

Since integration of solar photovoltaic (PV) sources into the power grid is increasing rapidly in recent years, the capability of photovoltaic source inverters can be an opportunity to improve the technical and economic indicators via reactive power management in low voltage distribution networks grids. This work proposes an optimal planning model to improve the voltage deviation index and increase the revenue sale electricity with the capability of PV inverters and fixed capacitors. In this regard, the optimal capacity of the PV inverter is determined simultaneously with the location and number of fixed capacitors to minimize investment (for PV inverter, fixed capacitor, operating cost) and maximize electricity sales revenue. For this purpose, an innovative model is presented that is able to calculate the annual technical-economic evaluation. To make the costs for investment, operation and maintenance of compensating devices more realistic, the lifespan and additional cost of inverter oversizing in the objective function are modelled. In this article, load flow equations along with technical constraints are integrated into a mixed-integer second-order conic programming model. Two real grids were simulated using MATLAB software in order to show the effectiveness of the proposed model. The comparison of the proposed RPM method with conventional methods confirmed considerable reduction of investment and energy losses in the low voltage distribution networks grids.