Optimized operation method for improving load of distribution network and photovoltaic carrying capacity by utilizing distributed energy storage
A distributed energy storage and carrying capacity technology, applied in the field of energy storage, can solve the problems of short service life and high price of energy storage batteries, so as to prolong the service life, optimize the operation of distribution network and reduce the fluctuation of voltage Effect
Active Publication Date: 2017-08-18
BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD
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Problems solved by technology
At present, due to the technology of the energy storage body, the price of the energy storage battery is still high, and its service life is short. In order to use the energy storage system reasonably to achieve the maximum benefit within its life cycle, a reasonable storage battery is required. Energy optimization operation strategy to delay the decay of energy storage life and improve the carrying capacity of distribution network for distributed generation and load
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[0057] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0058] The application scenario of the embodiment is a power distribution network with a high proportion of distributed power generation. The energy storage in the power distribution network can be configured in a distributed photovoltaic power generation system, can also be configured in industrial users, and can also be configured separately.
[0059] like figure 1 As shown in the present invention, it is an optimized operation method for improving distribution network load and distributed power supply carrying capacity by using energy storage proposed by the present invention. The method includes the following steps:
[0060] Step 1: Obtain the data of distribution network, new energy generation, load and each distributed energy storage system;
[0061] Step 2: Establish a multi-objective optimization function and its constraints based on system network l...
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The invention relates to an optimized operation method for improving load of a distribution network and distributed power carrying capacity by utilizing energy storage. The method comprises the following steps of accessing data of the distribution network, new energy generation, load and each distributed energy storage system; establishing a multi-objective optimization function and constraint conditions of system network loss cost, peak load demand cost, voltage regulation cost and energy storage cost; solving an objective function by using a particle swarm optimization algorithm and obtaining an output instruction of each of the distributed energy storage systems; and at the next sampling moment t=t+1, updating the data, repeating the above steps thereby achieving the effect of rolling optimization. The optimized operation method for improving load of distribution network and photovoltaic carrying capacity by utilizing distributed energy storage can be applied to a power distribution system with distributed power and energy storage, the distribution network operation is optimized and the service life of an energy storage battery is extended.
Description
[0001] Technical field: [0002] The invention belongs to the technical field of energy storage, and in particular relates to an optimized operation method for improving distribution network load and distributed power supply carrying capacity by using energy storage. [0003] Background technique: [0004] With the increasing tension of traditional energy and the prominence of environmental problems, renewable energy has received more and more attention. my country's renewable energy, especially wind power and photovoltaic power generation, has developed rapidly, and distributed photovoltaic and wind power are important components. In the eastern part of my country, distributed power generation has developed rapidly. However, renewable energy power generation is subject to great uncertainty due to weather conditions, and its intermittency and volatility have brought new challenges to the power grid, such as voltage, The impact of frequency and other issues, energy storage techno...
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IPC IPC(8): H02J3/28H02J3/38
CPCH02J3/28H02J3/382Y02E10/56Y02E70/30
Inventor 戴忠陈伟王立业
Owner BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD