A method for energy management of distributed energy system
A distributed energy and energy management technology, applied in energy storage, system integration technology, neural learning methods, etc., can solve the problem that the economic benefits of the system are difficult to reflect, the impact of renewable power on the power grid is not considered, and energy management cannot meet actual requirements and other issues to achieve the effect of ensuring safety and reliability, accuracy and reliability
Active Publication Date: 2020-03-24
SHANGHAI ELECTRIC DISTRIBUTED ENERGY TECH CO LTD
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Problems solved by technology
On the other hand, the existing micro-grid energy management system does not consider the impact of renewable power sources on the grid, which makes the energy management unable to meet the actual requirements, and the economic benefits of the system are difficult to reflect
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[0044] Such as figure 1 As shown, the distributed energy system of an embodiment of the present invention includes a renewable energy subsystem, an energy storage subsystem, and a management module. The management module controls each renewable energy subsystem through a circuit breaker, and the power control system (Power Control System, PCS) controls the energy storage subsystem.
[0045]Specifically, the distributed energy system includes two renewable energy subsystems, wt1 is an 8kW wind turbine, PV1 is a 34kW photovoltaic, and the energy storage subsystem is a 50kW energy storage lithium battery, which is tested with a 38kW simulated load.
[0046] Such as figure 2 As shown, the management module mainly predicts the power before the day, determines the scheduling instructions before the day, performs rolling optimization within the day, and operates in real time based on historical data, electricity sales (purchase) prices, battery SOC upper and lower limits, or the ma...
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The invention provides a distributed type energy system energy management method. The distributed type energy system energy management method comprises steps that (1) according to a day condition, historical data of a corresponding category is selected; (2) a management module is used for day-ahead power prediction according to the categorized historical data; (3)based on the day-ahead power prediction, minimization of operation costs is adopted as an optimization target, and a day-ahead scheduling instruction is provided; (4) by taking the minimization of the operation costs as the optimization target, rolling optimization is carried out; (5) by taking an upper limit and a lower limit of power conversion as a control target, real-time regulation and control is carried out. The distributed type energy system energy management method is advantageous in that the historical data is categorized, and the day-ahead prediction is carried out; by adopting the day-ahead prediction, step-by-step refining of setting periods is carried out, and the rolling optimization is carried out, and therefore accuracy and reliability of optimization results are guaranteed; based on the optimization results, the real-time regulation and control is carried out by taking an Internet-surfing threshold value as the control target, intermittency and fluctuation influences of renewable energy resources are reduced, and the safety performance and the reliability of the distributed type energy system and a large power grid are guaranteed.
Description
technical field [0001] The invention relates to the field of energy management of distributed energy systems, in particular to an energy management method for distributed energy systems. Background technique [0002] Compared with traditional centralized large-scale power plants, distributed energy is a miniaturized, modular energy supply system close to the load side, which has the advantages of cleanliness, environmental protection, flexibility, and high efficiency. [0003] In recent years, under the background of our country vigorously advocating "energy saving and emission reduction" and "taking the road of sustainable development", distributed energy is in a stage of rapid development. Distributed energy includes not only the combined cooling, heating and power system fueled by clean energy natural gas, but also renewable energy such as wind energy, solar energy, tidal energy, and biomass energy, as well as energy storage devices such as batteries and heat storage tank...
Claims
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IPC IPC(8): H02J3/00H02J3/38H02J3/28G06N3/08
CPCG06N3/084H02J3/008H02J3/28H02J3/383H02J3/386Y02E10/56Y02E10/76Y02E40/70Y02E70/30Y04S10/50
Inventor 刘伟古云蛟葛兴凯朱长东夏耀杰杨青何海斌
Owner SHANGHAI ELECTRIC DISTRIBUTED ENERGY TECH CO LTD