Full
Outline
With the increasing penetration rate of distributed photovoltaics in distribution network, the problems of photovoltaic power backflow and voltage overrun are becoming more and more serious. Meanwhile, the distribution network is faced with different control methods and regulation potentials of photovoltaic, which makes the heterogeneous photovoltaics difficult to coordinate and further affects the regulation and operation of distribution network. Therefore, an optimal regulation method for distribution network clustering (DNC) considering the voltage governance potential of heterogeneous distributed photovoltaics (HDPV) is proposed. First, to solve the problem of node voltage overrun under a scenario of the integration of high-penetration distributed photovoltaics, a DNC partitioning method considering voltage deviation sensitivity is proposed by combining the voltage deviation, power balance and node coupling degree. Second, the active and reactive power regulation characteristics of HDPV are analyzed, and a regulation model in different operation modes is established. Furthermore, based on the synchronous alternating direction method of multipliers, an optimal regulation method for DNC considering the voltage governance potential of HDPV is developed with an objective of minimizing the comprehensive operating cost and voltage deviation. Finally, an improved IEEE 33-node distribution network is used as an example to verify the effectiveness of the proposed optimization model, and results show that the proposed strategy realizes an efficient control of HDPV, and it can guarantee an economic operation of distribution network while improving its voltage level.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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