A distributed photovoltaic cooperative control method based on an active power distribution network

By modeling distributed photovoltaic (PV) devices and generating multi-level control strategies, the problem of power flow regulation difficulties after distributed power sources are connected to the distribution network is solved, centralized monitoring and management of distributed PV are realized, the operation mode of the distribution network is optimized, and the safety, stability and reliability of the power grid are improved.

CN116191528BActive Publication Date: 2026-07-07NARI NANJING CONTROL SYSTEM CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NARI NANJING CONTROL SYSTEM CO LTD
Filing Date
2022-11-17
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In new power systems, with a large number of distributed power sources connected to the distribution network, existing control and regulation methods are insufficient, leading to power flow exceeding limits and difficulties in active power regulation, which affects the safe and reliable operation of the distribution network.

Method used

By modeling the distributed photovoltaic equipment connected to the main station dispatch system, multi-level manual control strategies, over-limit automatic switching control strategies, and grid area regulation auxiliary control strategies are generated to achieve coordinated control of distributed photovoltaics, optimize voltage quality in the distribution network area, and reduce line losses.

Benefits of technology

It enables centralized monitoring and unified management of distributed photovoltaic power, optimizes the operation mode of the power distribution network, and improves the safety, stability and reliability of the power grid.

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Abstract

This invention discloses a distributed photovoltaic (PV) collaborative control method based on an active distribution network. The method includes a hierarchical coordinated control strategy for distributed PV suitable for active distribution networks, employing a top-down approach to manage the collaborative control of distributed power sources. It leverages five functions—controllable resource aggregation, multi-level manual control, automatic over-limit adjustment control, grid area adjustment auxiliary control, and historical control management and recovery—to achieve the distributed PV collaborative control method for the distribution network. This invention builds a distributed PV collaborative control system based on the distribution network master station system to achieve the advantages of adjustable and controllable distributed PV, energy storage, and other distributed power source equipment within the distribution range. It strengthens the active power flow control capability of the distribution network, bridging the last "mile" of active power control in the distribution network, optimizing voltage quality in the distribution network area, reducing line losses, and ensuring the safe and reliable operation of the distribution network after the integration of distributed power sources.
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