CN103810329A - Method for adjusting phase sequence arrangement of electric transmission line wire according to electric transmission line power - Google Patents
Method for adjusting phase sequence arrangement of electric transmission line wire according to electric transmission line power Download PDFInfo
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- CN103810329A CN103810329A CN201410022006.9A CN201410022006A CN103810329A CN 103810329 A CN103810329 A CN 103810329A CN 201410022006 A CN201410022006 A CN 201410022006A CN 103810329 A CN103810329 A CN 103810329A
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Abstract
The invention discloses a method for adjusting phase sequence arrangement of an electric transmission line wire according to electric transmission line power. The method solves the problems that transmission power of an existing electric transmission line is low, and the system static stability is reduced. The method comprises the steps of setting up a simulation calculation model of the electric transmission line according to the adopted tower type size, wire phase sequence arrangement, real parameters of the wire and the real length of the line of a same-tower double-circuit electric transmission line, utilizing an electromagnetic transient calculation method for calculating active power and reactive power transmitted by the electric transmission line under the condition of the phase sequence arrangement actually operated by the electric transmission line, changing the phase sequence arrangement of the electric transmission line wire, calculating active power and reactive power transmitted by the electric transmission line of a new model again until 36 phase sequences of the same-tower double-circuit electric transmission line are all calculated, and finding out the phase sequence arrangement mode with the largest active power transmitted by the electric transmission line. The auxiliary adjusting determining method is provided for the phase sequence arrangement of the same-tower double-circuit electric transmission line.
Description
Technical field
The present invention relates to a kind of method of adjusting the arrangement of transmission line wire phase sequence according to transmission line of electricity power, the transmission pressure that is applicable to the many back transmission lines to transformer station carries out rational phase sequence arrangement, overcomes transmission line of electricity transmission power defect less than normal.
Background technology
Along with the fast development of rapid growth and the electrical network of power load, for saving circuit corridor, in electrical network, there is a large amount of same tower double back transmission lines, when this same tower double back transmission line exceedes 100 kilometers, adopt and entirely replace to reduce the degree of unbalancedness of transmission line parameter; Short-term road adopts not replace and sets up.Along with short distance do not replace set up same tower double back transmission line increase with some original full transposition circuits cut-off in succession put into operation, it is asymmetric that its phase sequence is arranged the system triphase parameter causing, mutual inductance parameter increases, thereby cause transmission line of electricity transmission power less than normal, power system steady-state stability reduces, and has had a strong impact on the safe and stable operation of electrical network.
Summary of the invention
The invention provides a kind of method of adjusting the arrangement of transmission line wire phase sequence according to transmission line of electricity power, solved the technical matters that the transmission power existing due to existing transmission line of electricity is less than normal and power system steady-state stability reduces.
The present invention solves above technical matters by the following technical programs:
Adjust according to transmission line of electricity power the method that transmission line wire phase sequence is arranged, comprise the following steps:
The transmission line of electricity loop of Traverse phase-order is adjusted in the first step, first selected preparation;
The phase sequence of actual track length, the tower using and the transmission line of electricity of the transmission line of electricity in second step, the selected loop of basis is arranged, and sets up the Simulation of SAR power image computation model of selected loop transmission line;
The 3rd step, the Simulation of SAR power image computation model of setting up according to second step, calculate under transmission line of electricity actual motion phase sequence arranging situation active power and reactive power that transmission line of electricity is carried; Computing formula is as follows:
Wherein: the transmitting active power of the transmission line of electricity in P-selected loop;
U
1, U
2the voltage of the two ends bus of the transmission line of electricity in-selected loop;
x tthe system reactance of the transmission line of electricity in-selected loop, comprises that transmission line of electricity is from reactance and mutual reactance;
The Traverse phase-order of the transmission line of electricity in the 4th step, the selected loop of change is arranged, and repeats second step and the 3rd step process, again carries out the calculating of active power and the reactive power of transmission line of electricity conveying; The Traverse phase-order that again changes the transmission line of electricity in selected loop is arranged, and repeats second step and the 3rd step process, until 36 kinds of phase sequences of the transmission line of electricity in selected loop are arranged and all calculated;
36 kinds of transmission line of electricity phase sequence permutation calculation results of the transmission line of electricity in the 5th step, selected loop that the 3rd step and four-step calculation are gone out contrast, find out transmission line of electricity and carry the phase sequence arrangement mode of active power maximum, this phase sequence arrangement mode is the optimum phase sequence of the transmission line of electricity in selected loop and arranges.
The invention solves existing same tower double back transmission line due to Traverse phase-order unreasonable structure and arrangement, cause transmission line of electricity mutual inductive impedance to increase, transmission power is less than normal, affect the technical matters of Static Stability of Power System, arrange and provide a kind of auxiliary adjustment to determine method for same tower double back transmission line Traverse phase-order.
Embodiment
The present invention is described in detail below:
The transmission line of electricity loop of Traverse phase-order is adjusted in the first step, first selected preparation;
The phase sequence of actual track length, the tower using and the transmission line of electricity of the transmission line of electricity in second step, the selected loop of basis is arranged, and sets up the Simulation of SAR power image computation model of selected loop transmission line;
The 3rd step, the Simulation of SAR power image computation model of setting up according to second step, calculate under transmission line of electricity actual motion phase sequence arranging situation active power and reactive power that transmission line of electricity is carried; Computing formula is as follows:
；
Wherein: the transmitting active power of the transmission line of electricity in P-selected loop;
U
1, U
2the voltage of the two ends bus of the transmission line of electricity in-selected loop;
x tthe system reactance of the transmission line of electricity in-selected loop, comprises that transmission line of electricity is from reactance and mutual reactance;
the both end voltage merit angular difference of the transmission line of electricity in-selected loop;
As can be seen from the above equation, Transmission Lines power is directly proportional to two ends busbar voltage, is inversely proportional to system reactance (comprising mutual reactance).Therefore system reactance is larger, and transmitting active power is less, and system reactance is less, and transmitting active power is larger;
The Traverse phase-order of the transmission line of electricity in the 4th step, the selected loop of change is arranged, and repeats second step and the 3rd step process, again carries out the calculating of active power and the reactive power of transmission line of electricity conveying; The Traverse phase-order that again changes the transmission line of electricity in selected loop is arranged, and repeats second step and the 3rd step process, until 36 kinds of phase sequences of the transmission line of electricity in selected loop are arranged and all calculated;
36 kinds of transmission line of electricity phase sequence permutation calculation results of the transmission line of electricity in the 5th step, selected loop that the 3rd step and four-step calculation are gone out contrast, find out transmission line of electricity and carry the phase sequence arrangement mode of active power maximum, this phase sequence arrangement mode is the optimum phase sequence of the transmission line of electricity in selected loop and arranges.
Claims (1)
1. adjust according to transmission line of electricity power the method that transmission line wire phase sequence is arranged, comprise the following steps:
The transmission line of electricity loop of Traverse phase-order is adjusted in the first step, first selected preparation;
The phase sequence of actual track length, the tower using and the transmission line of electricity of the transmission line of electricity in second step, the selected loop of basis is arranged, and sets up the Simulation of SAR power image computation model of selected loop transmission line;
The 3rd step, the Simulation of SAR power image computation model of setting up according to second step, calculate under transmission line of electricity actual motion phase sequence arranging situation active power and reactive power that transmission line of electricity is carried; Computing formula is as follows:
Wherein: the transmitting active power of the transmission line of electricity in P-selected loop;
U
1, U
2the voltage of the two ends bus of the transmission line of electricity in-selected loop;
x tthe system reactance of the transmission line of electricity in-selected loop, comprises that transmission line of electricity is from reactance and mutual reactance;
The Traverse phase-order of the transmission line of electricity in the 4th step, the selected loop of change is arranged, and repeats second step and the 3rd step process, again carries out the calculating of active power and the reactive power of transmission line of electricity conveying; The Traverse phase-order that again changes the transmission line of electricity in selected loop is arranged, and repeats second step and the 3rd step process, until 36 kinds of phase sequences of the transmission line of electricity in selected loop are arranged and all calculated;
36 kinds of transmission line of electricity phase sequence permutation calculation results of the transmission line of electricity in the 5th step, selected loop that the 3rd step and four-step calculation are gone out contrast, find out transmission line of electricity and carry the phase sequence arrangement mode of active power maximum, this phase sequence arrangement mode is the optimum phase sequence of the transmission line of electricity in selected loop and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410022006.9A CN103810329A (en) | 2014-01-18 | 2014-01-18 | Method for adjusting phase sequence arrangement of electric transmission line wire according to electric transmission line power |
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| CN201410022006.9A CN103810329A (en) | 2014-01-18 | 2014-01-18 | Method for adjusting phase sequence arrangement of electric transmission line wire according to electric transmission line power |
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| CN103810329A true CN103810329A (en) | 2014-05-21 |
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| CN201410022006.9A Pending CN103810329A (en) | 2014-01-18 | 2014-01-18 | Method for adjusting phase sequence arrangement of electric transmission line wire according to electric transmission line power |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097143A (en) * | 2016-06-15 | 2016-11-09 | 国网江西省电力科学研究院 | A kind of method choosing the optimum phase sequence arrangement mode of multiple-circuit on same tower |
| CN106203766A (en) * | 2016-06-23 | 2016-12-07 | 深圳供电局有限公司 | A kind of 500kV transformer station string anti-region power frequency electric field optimization method |
| CN107017655A (en) * | 2017-06-14 | 2017-08-04 | 国网山西省电力公司电力科学研究院 | The method of adjustment of sending end current conversion station DC power transmission line maximum delivery power |
| CN109659851A (en) * | 2018-12-27 | 2019-04-19 | 中国电力科学研究院有限公司 | 750kV is the same as four loop transmission line straight line pole tower of tower and its phase sequence selection method and device |
Citations (1)
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| CN103235198A (en) * | 2013-04-14 | 2013-08-07 | 国家电网公司 | Method for determining phase sequence arrangement modes of conducting wires of same-tower double-circuit transmission lines |
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2014
- 2014-01-18 CN CN201410022006.9A patent/CN103810329A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103235198A (en) * | 2013-04-14 | 2013-08-07 | 国家电网公司 | Method for determining phase sequence arrangement modes of conducting wires of same-tower double-circuit transmission lines |
Non-Patent Citations (4)
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| 庄晓芸: "交流1000kV输电线工频电磁场与输送功率及其影响因素研究", 《中国优秀硕士学位论文全文数据库-工程科技Ⅱ辑》 * |
| 张晓: "同塔四回输电线路电磁环境研究", 《中国优秀硕士学位论文全文数据库-工程科技Ⅱ辑》 * |
| 王晔: "1000kV特高压输电线路不平衡度分析及换位方式的研究", 《华北电力大学学报》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097143A (en) * | 2016-06-15 | 2016-11-09 | 国网江西省电力科学研究院 | A kind of method choosing the optimum phase sequence arrangement mode of multiple-circuit on same tower |
| CN106203766A (en) * | 2016-06-23 | 2016-12-07 | 深圳供电局有限公司 | A kind of 500kV transformer station string anti-region power frequency electric field optimization method |
| CN107017655A (en) * | 2017-06-14 | 2017-08-04 | 国网山西省电力公司电力科学研究院 | The method of adjustment of sending end current conversion station DC power transmission line maximum delivery power |
| CN109659851A (en) * | 2018-12-27 | 2019-04-19 | 中国电力科学研究院有限公司 | 750kV is the same as four loop transmission line straight line pole tower of tower and its phase sequence selection method and device |
| CN109659851B (en) * | 2018-12-27 | 2021-04-23 | 中国电力科学研究院有限公司 | 750kV same-tower four-circuit transmission line linear tower type and phase sequence selection method and device thereof |
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Application publication date: 20140521 |