A method for control peak load regulation of electric network
A control method and grid technology, applied in wind power generation, AC network load balancing, single grid parallel feeding arrangement, etc., can solve the problem of high grid operating costs, limited capacity of energy storage systems, and loss of service life of energy storage systems due to overcharging Large and other problems, to achieve the effect of reducing operating costs, avoiding losses, and increasing peak shaving support constraints
Active Publication Date: 2018-12-21
NARI TECH CO LTD +5
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a control method for peak regulation of the power grid, and solve the problem that the capacity of the energy storage system in the prior art is limited, cannot meet the demand for peak regulation of the power grid, and the service life of the energy storage system is greatly lost due to overcharging , technical problems of high grid operating costs
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[0043] The invention makes full use of the supplementary effect of the charging characteristics of the energy storage system on the backup of the power grid, and at the same time considers the matching relationship between the peak-shaving depth of the power grid and the charging capacity of the energy storage system, reasonably arranges the start-stop and action sequence of the deep peak-shaving of thermal power, and satisfies the needs of the power grid. Under the premise of peak shaving demand, reduce the number of deep peak shaving starts of thermal power units and shorten the operation time of deep peak shaving of thermal power units to improve the economy of power grid operation.
[0044] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0045] ...
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The invention discloses a peak load regulation control method of a power network, which comprises the following steps: acquiring operation data of the power network and calculating a system peak loadregulation starting threshold; The wind power output is regarded as a negative load, and the equivalent load of the system is calculated. Judging whether the equivalent load is less than the peak loadstart threshold, and calculating the energy storage peak load control command if the condition is satisfied; Considering the supplementary effect of the charging characteristics of the energy storagesystem on the system reserve, the start-up of the deep peak shaving of the thermal power unit is timely arranged; Judge whether the equivalent load of the system after the start of peak shaving is greater than the system peak shaving exit threshold, and if so, the system exits the peak shaving control. The method of the invention fully exerts the fast supporting function of the energy storage system in the system peak load regulation, and optimizes the timing sequence of the deep peak load regulation of the thermal power unit, which has very important significance for improving the power supply reliability of the system and improving the economy of the power network operation.
Description
technical field [0001] The invention relates to the technical field of power grid regulation, in particular to a power grid peak regulation control method. Background technique [0002] With the gradual increase of wind power grid penetration rate, the randomness, intermittency and uncontrollability of wind power generation pose new challenges to power grid peak regulation. The peak shaving characteristics lead to a more prominent situation where the system peak shaving capacity is insufficient. [0003] In recent years, the rapid development of energy storage technology can realize the throughput of electric energy and is considered to be an effective means to control wind power output and improve the ability of the grid to accept wind power. However, the capacity limitation of the energy storage system has a limited ability to control the peak regulation of the power grid, and excessive charging and discharging will greatly shorten the service life of the energy storage s...
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Login to View More IPC IPC(8): H02J3/46H02J3/32
CPCH02J3/32H02J3/46Y02E10/76
Inventor 于昌海吴继平杨海晶李朝晖李文启宋宁希滕贤亮涂孟夫丁恰张小白徐瑞谈超
Owner NARI TECH CO LTD