A method for optimizing the operation of an optical storage system taking into account the benefit of voltage regulating auxiliary service

Abstract

The invention discloses an optimized operation method of an optical storage system considering the auxiliary service income of voltage regulation, which comprises the following steps: S1, a topological structure of the optical storage system and a flexible grid-connected operation mode are given; S2 integrates the power-on-grid revenue, auxiliary service revenue, power purchase cost, loss cost andoperation constraints, and constructs an optimal operation model aiming at maximizing the economic revenue of optical storage system; S3 To solve the continuous multi-stage global active and reactivepower bi-decision problem of optical storage system, a multi-dimensional dynamic programming algorithm is used to solve the optimal operation model of optical storage system. Compared with the traditional method, the optical storage system can actively respond to the voltage regulation auxiliary service price incentive, thus obtaining higher economic benefit, and effectively solving the problem that the voltage of the distribution network exceeds the limit.

Description

technical field [0001] The invention relates to a method for optimizing the operation of an optical storage system taking into account the benefits of voltage regulation auxiliary services, and belongs to the technical field of optimal operation of distribution networks. Background technique [0002] The distribution network, especially the cable distribution network, has a relatively large impedance ratio R / X, and the distribution of active / reactive power flow will have a great impact on the node voltage. question. Distributed generation (distributed generator, DG) represented by photovoltaics has an increasing penetration rate in the distribution network. Conventional DG grid connection only outputs active power. This "rigid" grid connection method further exacerbates the problem of high voltage in the distribution network. [0003] Conventional means to solve the problem of high voltage distribution network include regulating transformer taps, shunt reactors and static s...

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Problems solved by technology

The on-load adjustment of transformer taps cannot fundamentally solve the voltage limit caused by insufficient reactive power of the system. Reactive power compensation devices such as shunt reactors and static synchronous compensators have a significant effect on voltage problems caused by reactive power flow, but they cannot effectively solve high The high voltage problem caused by the penetration of clean energy into the grid may greatly increase the system network loss

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