Layered distributed voltage optimization control method for high and medium voltage distribution network

A technology for high and medium voltage distribution network and voltage optimization, which is applied in the direction of AC network voltage regulation, circuit devices, AC network circuits, etc.

Pending Publication Date: 2019-03-19
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0005] This application provides a hierarchical distributed voltage optimization control method for medium and high voltage distribution networks to solve the problem that the medium and high voltage distribution networks in the prior art cannot regulate the voltage of the medium voltage distribution network and cannot control the discrete voltage in the distribution network. Technical Problems of Equipment Optimum Scheduling

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  • Layered distributed voltage optimization control method for high and medium voltage distribution network
  • Layered distributed voltage optimization control method for high and medium voltage distribution network
  • Layered distributed voltage optimization control method for high and medium voltage distribution network

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[0051] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0052] see figure 1 , is a schematic flowchart of a hierarchical distributed voltage optimization control method for a medium and high voltage distribution network provided by an embodiment of the present invention. combine figure 1 As can be seen, the method includes the following steps:

[0053] Step S100: dividing the high and medium vo...

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Abstract

The invention discloses a layered distributed voltage optimization control method for high and medium voltage distribution networks. The method comprises the steps of: dividing high and medium voltagedistribution networks into an upper distribution network and a lower distribution network; performing convexification of the optimization models in the upper and lower distribution networks to obtaina global optimization model; decomposing the global optimization model to a main problem and a plurality of sub problems; calculating the main problem and the sub problems, and mutually transmittingthe optimization parameters of boundary variables between the upper and lower distribution networks; repeating the previous step until the deviations of the upper and lower limits of the global optimization target are smaller than a preset value. The dual-layer distribution networks which are principal and subordinate structures perform few data exchange and distributed alternate computing to obviously reduce the complexity of the global optimization calculation and fully develop the mutual voltage supply capacity between the high and medium voltage distribution networks so as to avoid the distributed photovoltaic generation loss. The model is subjected to layered distributed optimization calculation and issues a control command to a continuous voltage regulation device and a discrete device in the distribution networks based on the obtained optimization calculation result.

Description

technical field [0001] The present application relates to the technical field of electric power security, in particular to a layered distributed voltage optimization control method for a medium and high voltage distribution network. Background technique [0002] With the increasing penetration of distributed photovoltaics in the distribution network, the distribution network has changed from a passive one-way distribution network to an active network with two-way power flow, and is facing operational challenges such as power flow reversal and voltage over-limit. This not only limits the ability of the distribution network to accept distributed photovoltaics, but also seriously threatens the safe and stable operation of the distribution network. Therefore, the control and management of reactive power regulation equipment and distributed photovoltaics in the high and medium voltage distribution network has become an important task for the optimal operation of the system. [0...

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Application Information

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IPC IPC(8): H02J3/12
CPCH02J3/12H02J2203/20Y02E40/30
Inventor 陆海罗恩博
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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