• 教学讨论 •

### 电源功率的物理分布机理

1. 1. 凯里学院大数据工程学院，贵州凯里556011; 2. 凯里学院理学院，贵州凯里556011
• 收稿日期:2019-09-16 修回日期:2020-03-23 出版日期:2020-09-20 发布日期:2020-09-24
• 作者简介:尹海峰( 1982—) ，男，河南汝南人，凯里学院教授，博士，主要从事物理教学和纳米材料光电性质的研究工作.
• 基金资助:
国家自然科学基金( 11464023) ，贵州省教育厅基金( 黔教合KY 字[2018]035) ，凯里学院双一流建设项目( TDYL1805)

### Physical distribution mechanism of the power supply

YIN Hai-feng1，ZENG Chun-hua2

1. 1. School of Big Data Engineering，Kaili University，Kaili，Guizhou 556011，China; 2. College of Science，Kaili University，Kaili，Guizhou 556011，China
• Received:2019-09-16 Revised:2020-03-23 Online:2020-09-20 Published:2020-09-24

Abstract: This paper mainly analyses a linear circuit with two power sources. There are three types of this circuit: the current - controlled dual - port network，voltage - controlled dual - port network and hybrid dual - port network. A dual-port network VCR can be obtained by measuring and other methods. The physical distribution of each part of the power of two power sources can be obtained when the VCR of two-port network is known. The power of each power supply consists of two parts. One part is equal to the power provided by the power supply when it is connected to the circuit separately. Another part is the increased power due to the interaction between the two power sources when they are both connected to the circuit. The increased power depends on two power sources and circuit parameters. According to the reciprocity theorem，when there is no controlled source，for current-controlled twoport networks and voltage-controlled two-port networks，the increased power of each power source due to interaction

is equal. That is to say，the increased loss power of the circuit is shared equally by the two power sources. For a hybrid dual-port network，when there is no controlled source，the increased absorption power of one power source is equal to the increased supply power of another power source due to the interaction. The sum of the power of both power supplies is equal to the sum of the power of both power supplies when it is connected to the circuit separately. In this case，the effect of interaction is that one power source charges another power source. The results of this study are universal. It can help one to solve the power source problem of power grid，and can also solve the power source problem of other electronic circuits.