A phase modulation method and device for an unbalanced station area based on a genetic phase modulation algorithm
An algorithm and balancing technology, applied in the direction of reducing the asymmetry of polyphase networks, eliminating/reducing asymmetry in polyphase networks, etc. problem, to achieve the effect of ensuring three-phase balance
Active Publication Date: 2020-07-10
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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Problems solved by technology
On the one hand, the three-phase imbalance will increase the loss of distribution transformers and the zero-sequence current, which will affect the safe and stable operation of distribution transformers; on the other hand, it will increase the loss of distribution network lines, resulting in high and low voltage problems for users, affecting users The quality of the supply voltage
[0004] However, the existing phase modulation methods for unbalanced station areas usually simply set the three-phase unbalance degree within the qualified range as the adjustment target, and use the user's power accumulation over a period of time as the data basis for three-phase adjustment, without considering load changes The impact on the three-phase unbalance may make the three-phase unbalance in the station area more serious in certain periods of time
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[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0045] The embodiment of the present invention discloses a phase modulation method based on a genetic phase modulation algorithm for an unbalanced station area, please refer to the attached figure 1 , the method specifically includes the following steps:
[0046] S101: According to the line topology structure of the distribution station area and the location of the data collection point, divide the distribution station area into multiple partitions, and obtain...
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The invention provides a genetic phase modulation algorithm-based phase modulation method and apparatus for an imbalanced zone area. A power distribution zone area is divided into multiple sub areas according to the circuit topological structure and data collection point positions of the power distribution zone area, and three-phase current of each sub area is obtained from the corresponding data collection points; X original sample schemes are generated randomly according to the three-phase current collected from each sub area; and iteration is performed according to the X original sample schemes and a preset genetic phase modulation algorithm, and after the preset number of iteration times is reached, the optimal phase modulation scheme obtained after each iteration is obtained. Therefore, by virtue of the technical scheme provided by the invention, the three-phase current of the data collection points is used as the data basis, and the genetic phase modulation algorithm is also adopted for iteration; and by virtue of the finally determined optimal phase modulation scheme, three-phase balance of the power distribution zone area can be ensured rapidly and accurately.
Description
technical field [0001] The invention relates to the technical field of power distribution, and more specifically, relates to a phase modulation method and device for an unbalanced station area based on a genetic phase modulation algorithm. Background technique [0002] With the improvement of UHV power grid construction, the operation of distribution network has gradually become the focus of people's attention, and the problem of three-phase imbalance in the distribution network has also received more and more attention. On the one hand, the three-phase imbalance will increase the loss of distribution transformers and increase the zero-sequence current, which will affect the safe and stable operation of distribution transformers; on the other hand, it will increase the loss of distribution network lines, resulting in high and low voltage problems for users, affecting users quality of the supply voltage. Therefore, the governance of the three-phase unbalance problem is parti...
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IPC IPC(8): H02J3/26
CPCH02J3/26Y02E40/50
Inventor 邓才波何昊范瑞祥徐宁蒙天骐安义刘友仁肖红霞郭亮刘蓓李博江
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST