CN103439604A - On-line monitoring method for power quality of coal mine power supply system - Google Patents
On-line monitoring method for power quality of coal mine power supply system Download PDFInfo
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- CN103439604A CN103439604A CN2013103792987A CN201310379298A CN103439604A CN 103439604 A CN103439604 A CN 103439604A CN 2013103792987 A CN2013103792987 A CN 2013103792987A CN 201310379298 A CN201310379298 A CN 201310379298A CN 103439604 A CN103439604 A CN 103439604A
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Abstract
The invention discloses a method for achieving on-line monitoring of the ground and underground integrated power quality based on an intelligent coal mine substation system. The method solves the problem that the underground power quality can not be monitored in the past, and achieves all-parameter measurement analysis of the power quality of a ground and underground integrated coal mine total-system power grid. Moreover, the synchronous test of the power quality of switches of the whole grid is achieved, and the method has the advantages of being simple and easy to implement, high in monitoring accuracy and visual in display, and truly achieving overall on-line monitoring of the power quality of the coal mine power supply system.
Description
Technical field
The present invention relates to a kind of quality of power supply on-line monitoring method, relate in particular to a kind of method that realizes coal mine ground and downhole integrated quality of power supply on-line monitoring based on colliery intelligent substation system, belong to the Coal Mine Power Distribution System quality of power supply and improve technical field.
Background technology
Colliery is also more and more higher to the requirement of the quality of power supply when electricity needs is increased, and the quality of the quality of power supply directly has influence on the safety in production in colliery.The access of a large amount of nonlinear loads and the nonlinear characteristic of Coal Mine Power Network itself, make Coal Mine Power Network pollute more and more serious, and in the numerous indexs that comprise in the quality of power supply, voltage deviation, voltage fluctuation, harmonic wave are the emphasis that the Coal Mine Power Network quality of power supply is controlled.The monitoring result of the quality of power supply is to improve the foundation of the quality of power supply, at present to the test of the Coal Mine Power Network quality of power supply, mainly use the electric energy quality test instrument to test one by one each loop, test period is long, and can't realize testing in the same time and comparative analysis, to the underground power supply used quality of power supply, only can test the circuit of going into the well.
Summary of the invention
The problem existed for above-mentioned prior art, the invention provides a kind of method of Coal Mine Power Distribution System quality of power supply on-line monitoring, the method has realized monitoring and the data sharing of the full mine quality of power supply based on colliery intelligent substation system, have simple, monitoring accuracy is high, show characteristics intuitively, can complete the quality of power supply on-line monitoring of total system ground downhole integrated, solved the difficult problem that the down-hole quality of power supply can't be monitored in the past.
To achieve these goals, the technical solution used in the present invention is: a kind of method that realizes the quality of power supply on-line monitoring of coal mine ground downhole integrated based on colliery intelligent substation system comprises the following steps:
(1) take the colliery intelligent substation as basis, be that each transformer station of coal mine ground and down-hole builds up respectively intelligent substation, ground intelligent electric energy quality for substation Monitor Sub-Station of Less and down-hole integrated protection measure and control device (comprising the electric energy quality monitoring analytic function) are responsible for the monitoring of each intelligent power transformation substation quality of power supply;
(2) each transformer station process layer sampled voltage and current information, and sampled data is uploaded to electric energy quality monitoring substation or integrated protection measure and control device according to the IEC61850 stipulations;
(3) each intelligent substation wall electric energy quality monitoring substation or integrated protection measure and control device carry out computational analysis according to sampled value information to every content of the quality of power supply, obtain the analysis result of the quality of power supply;
(4) each intelligent substation wall electric energy quality monitoring substation or integrated protection measure and control device reach ground station level electric energy quality monitoring main frame by the result of power quality analysis with form and trend map in form; carry out displaying and the management of coal mine ground and the underground electric network quality of power supply, realize the quality of power supply on-line monitoring of ground downhole integrated.
The invention has the beneficial effects as follows: solved the difficult problem that the down-hole quality of power supply can't be monitored in the past, realized the population parameter Measurement and analysis of downhole integrated colliery, the ground total system electrical network quality of power supply, not only realized the synchronism detection of the quality of power supply at each switch place of the whole network, and have simple, monitoring accuracy is high, show characteristics intuitively, really accomplished comprehensive on-line monitoring of the Coal Mine Power Distribution System quality of power supply.
The accompanying drawing explanation
Fig. 1 is the process flow diagram that the present invention realizes the integrated quality of power supply on-line monitoring of coal mine ground underground electric network;
The structural drawing that Fig. 2 is Coal Mine Power Distribution System quality of power supply on-line monitoring scheme of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the present invention includes following steps:
(1) take the colliery intelligent substation as basis, be that each transformer station of coal mine ground and down-hole builds up respectively intelligent substation, each intelligent substation of ground and down-hole comprise process layer and wall two-layer, build up the station level of control center as each intelligent substation on ground, ground intelligent electric energy quality for substation Monitor Sub-Station of Less and down-hole integrated protection measure and control device (comprising the electric energy quality monitoring analytic function) are responsible for the monitoring of each intelligent power transformation substation quality of power supply, control center's electric energy quality monitoring main frame is responsible for representing of the total system quality of power supply and manages, as shown in Figure 2;
(2) ground intelligent power transformation substation process layer combining unit sampled voltage and current information, sampled data is uploaded to the electric energy quality monitoring substation by fiber optic Ethernet according to the IEC61850 stipulations, downhole intelligent power transformation substation process layer protection merge cells sampled voltage and current information, sampled data is uploaded to the integrated protection measure and control device by fiber optic Ethernet according to the IEC61850 stipulations;
(3) the voltage and current sample information that electric energy quality monitoring substation and integrated protection measure and control device are uploaded according to process layer; the contents such as the total percent harmonic distortion of the voltage of the quality of power supply, each primary current harmonic wave, voltage fluctuation and flicker, active power, reactive power, power factor, supply voltage deviation, imbalance of three-phase voltage degree, power system frequency deviation are carried out to computational analysis, obtain the analysis result of the quality of power supply.
(4) electric energy quality monitoring substation and integrated protection measure and control device reach ground station level electric energy quality monitoring main frame by the result of power quality analysis with form and trend map in form; the electric energy quality monitoring main frame by electric energy quality monitoring software to total system electric energy quality monitoring data represented, store and management, realize the quality of power supply on-line monitoring of Coal Mine Power Network ground downhole integrated.
The present invention adopts the scheme based on colliery intelligent substation system for the on-line monitoring of the Coal Mine Power Distribution System quality of power supply; electric energy quality monitoring substation and integrated protection measure and control device have been realized calculating and the analysis of ground and each electric energy quality for substation of down-hole; and the power quality analysis result is uploaded to the ground station level; realized sharing of Coal Mine Power Distribution System total system quality of power supply information; realize the quality of power supply on-line monitoring of total system ground downhole integrated, solved the difficult problem that the down-hole quality of power supply can't be monitored in the past.Have simplely, monitoring accuracy is high, shows characteristics intuitively, has really accomplished comprehensive on-line monitoring of the Coal Mine Power Distribution System quality of power supply.
Claims (2)
1. the method for a Coal Mine Power Distribution System quality of power supply on-line monitoring; it is characterized in that: take intelligent substation as basis; reach coal mine ground and each transformer station of down-hole and build up respectively intelligent substation, ground intelligent transformer station and down-hole integrated protection measure and control device, be responsible for the monitoring of each intelligent power transformation substation quality of power supply.
2. the method for a kind of Coal Mine Power Distribution System quality of power supply on-line monitoring according to claim 1; it is characterized in that: each transformer station process layer sampled voltage and current information, and sampled data is uploaded to electric energy quality monitoring substation or integrated protection measure and control device according to the IEC61850 stipulations.
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| CN2013103792987A CN103439604A (en) | 2013-08-28 | 2013-08-28 | On-line monitoring method for power quality of coal mine power supply system |
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| CN2013103792987A CN103439604A (en) | 2013-08-28 | 2013-08-28 | On-line monitoring method for power quality of coal mine power supply system |
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Cited By (2)
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| CN103995193A (en) * | 2014-04-30 | 2014-08-20 | 贵州电力试验研究院 | Digital substation whole-substation power quality on-line monitoring device |
| CN116961239A (en) * | 2023-09-18 | 2023-10-27 | 山东开创电气有限公司 | Underground coal mine explosion-proof electrical equipment parameter monitoring system |
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Application publication date: 20131211 |