Configuration and control integrated optimization method for off-grid multi-energy system
An optimization method, multi-energy technology, applied in the direction of power network operating system integration, information technology support systems, circuit devices, etc., can solve problems such as reducing the quality of energy supply, unable to provide sufficient dynamic performance, etc., to enhance system operation flexibility, The effect of improving closed-loop dynamic performance
Pending Publication Date: 2022-04-19
SOUTHEAST UNIV
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Problems solved by technology
Traditional steady-state configuration methods may not provide sufficient dynamic performance, reducing the quality of energy supply during load changes, because the dynamic performance of the system is highly related to the selection of equipment
Method used
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Embodiment 1
[0163] Step 10) Select the key capacity configuration parameters of each device, and study its dynamic impact on the system. The capacity configuration parameters selected for each equipment are the metal mass m of the regenerator of the micro gas turbine (MGT), the moment of inertia r of the rotor, and the compressor capacity V of the air source heat pump (ASHP). com , and it is related to the capacity of the respective equipment, as shown in the following formula:
[0164]
[0165] Step 20) Design a steady-state non-deviation line predictive controller with design perception capability, the overall control structure of the system is as follows Figure 5 As shown, by adjusting the fuel quantity m f and heat pump speed r c To adjust the output of the micro-turbine and the heat pump, and then adjust the remaining power of the system and the temperature of the water supply, and adopt the adjustment mode of constant water supply temperature and variable flow rate for the use...
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According to the configuration and control integrated optimization method for the off-grid multi-energy system, the overall economic performance and the dynamic operation performance of the system are fully considered in the system configuration stage, and the dynamic adjustment capacity of the multi-energy system can be enhanced on the premise that the economical efficiency of the multi-energy system is slightly affected. According to the integrated optimization method, an off-line prediction controller with design perception capability is constructed through a multi-parameter planning method, and on this basis, a brand-new multi-energy system optimization configuration method considering closed-loop characteristics is provided by taking system investment cost, operation cost and closed-loop dynamic performance as indexes. According to the method, the closed-loop dynamic performance of the system is remarkably improved and the operation flexibility of the system is enhanced on the premise that the influence on the economical efficiency of the system is small.
Description
technical field [0001] The invention belongs to the technical field of thermal control, and in particular relates to an integrated optimization method for configuration and control of an off-grid multi-energy system. Background technique [0002] The off-grid multiple energy system (Multiple Energy System, MES) has the advantages of independence, multi-energy cogeneration, high efficiency and on-site utilization of renewable energy, etc., and provides a promising way for energy supply. It is considered as an island, Key energy supply technologies in remote rural areas such as frontiers and polar regions, even in urban industrial parks and living areas, off-grid multi-energy systems have been vigorously promoted. [0003] However, the intermittence of renewable energy sources and changes in user load demands pose significant challenges to the reliability of off-grid multi-energy systems without grid support. Adjustable devices are needed to provide them with sufficient flexi...
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IPC IPC(8): H02J3/46H02J3/14H02J3/32H02J3/38
CPCH02J3/466H02J3/144H02J3/0075H02J3/32H02J3/381H02J2203/20Y02B70/30Y02B70/3225Y04S20/222Y04S20/244
Inventor 吴啸郑丙乐
Owner SOUTHEAST UNIV