Full
Outline
Aimed at the problem that the traditional droop control allocates load power based on a fixed droop coefficient without considering the influence of line impedance or the information about energy storage unit capacity, as well as the problems of high system communication pressure and complex control structure, a control strategy for the coordinated operation of multi-energy storage without voltage observers is proposed. First, the proposed strategy introduces a convergence function including the capacity of distributed energy storage units (DESUs) and state-of-charge (SOC) to correct the initial droop coefficient, and it gives constraints on the adjustment coefficient, thereby promoting the rapid SOC equilibrium of the energy storage unit. Second, by introducing a virtual rated power, the unit output power is configured and balanced to overcome the effect of line impedance on the load sharing of DESUs. Through the construction of a product of maximum allowable bus voltage deviation and average unit power, the bus voltage compensation amount is obtained, so as to realize voltage regulation without the need of communicating and exchanging the node voltage information about the energy storage unit or the design of the corresponding voltage observer and PI controller. Finally, the effectiveness of the proposed strategy was verified by simulation tests using MATLAB/Simulink.
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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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