CN105262087A - Electric system node voltage computing method - Google Patents
Electric system node voltage computing method Download PDFInfo
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- CN105262087A CN105262087A CN201510826205.XA CN201510826205A CN105262087A CN 105262087 A CN105262087 A CN 105262087A CN 201510826205 A CN201510826205 A CN 201510826205A CN 105262087 A CN105262087 A CN 105262087A
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Abstract
The invention provides an electric system node voltage computing method, which comprises five steps of: gathering a power grid, selecting a node, bringing into a computing formula, computing parameters and checking computation. According to the electric system node voltage computing method, on the one hand the electric power node voltage computing process can be effectively simplified, and the computing efficiency can be effectively improved; on the other hand the node selection and node voltage computing process can be standardized, the uniformity and standardization of the computing process can be improved, and thereby the universality of computing data can be improved while the accuracy of the computing result is improved.
Description
Technical field
The present invention relates to a kind of communication resource managing apparatus, especially a kind of Electric Power System Node Voltage computational methods.
Background technology
Electric Power System Node Voltage calculates, carry out NETWORK STRUCTURE PRESERVING POWER SYSTEM, power distributes, the core work that the design and runnings such as instantaneous tidal current voltage value control, therefore high requirement is had to the accuracy of Electric Power System Node Voltage result of calculation, but find in real work, current when calculating Electric Power System Node Voltage, node is being selected, all there is larger difference in the aspects such as clearing form, therefore the node voltage error of calculation is caused on the one hand larger, also result in node voltage computational process to be on the other hand responsible for, and versatility is not enough, thus had a strong impact on the practical application effect of Electric Power System Node Voltage result of calculation, therefore for this present situation, in the urgent need to developing a kind of brand-new electric power system node calculate method, with the needs that satisfied reality uses.
Summary of the invention
The object of this invention is to provide a kind of can a kind of Electric Power System Node Voltage computational methods of extensive use and large area power supply management system information interaction and management.
In order to achieve the above object, the invention provides following technical scheme:
A kind of Electric Power System Node Voltage computational methods, Electric Power System Node Voltage computational methods comprise the steps:
The first step, electrical network gathers, and gathers electrical network and forms, and determine quantity, the Type and distribution position of node to be calculated in electrical network, and will gather network configuration and the component parameters of each node obtained, and be organized in unified summary sheet by these number sequences;
Second step, select node, from gathering the respective nodes selecting voltage to be calculated each node of obtaining as required, selected node comprises the meritorious node of at least one known active power and voltage magnitude and the idle node of at least one known reactive power and voltage magnitude, a meritorious node and an idle node form a node group, and all can select at least one node group in every bar circuit;
3rd step, brings computing formula into, and according to network configuration and the component parameters of selected economize on electricity, the meritorious node iterative computation formula of generation and idle node iteration radix press formula;
4th step, calculation of parameter, is first updated to meritorious node iterative computation formula and idle node iteration radix respectively by formula, and obtains the current injection quantity of each node as calculated by predeterminated voltage initial value; Then calculate the actual active power of each meritorious node according to current injection quantity, then the actual active power calculated is brought in meritorious node iterative computation formula, and obtain the actual voltage value of meritorious node; Finally the actual voltage value of the meritorious node calculated is brought into idle node iteration radix by formula, the actual voltage value of idle node can be obtained.
5th cloth, inspection calculates, be fed back into the 4th step and reset Initial Voltage Value, and the Initial Voltage Value reset is brought into meritorious node iterative computation formula and idle node iteration radix by formula, and calculate, then the concrete numerical value obtained and the numerical value calculating acquisition are before compared, with this judge each node voltage calculated value and computational methods whether accurate.
Further, when the node group in described second step to be distributed on same circuit quantity for two groups or more, then isolated by least one resistance equipment between two adjacent group node groups.
Further, the inspection of the 5th described step calculates, each meritorious node and idle node all carry out at least three times and calculate, and if node group quantity on a circuit is two or more time, then the inspection calculation times of the 5th step is at least twice of node group number on this article of circuit.
Node selection mode of the present invention is unified and standard, computational process simple and flexible, can effectively simplify Electric Power System Node Voltage computational process on the one hand, improve computational efficiency, on the other hand can specification node selection, node voltage calculation process, improve uniformity and the normalization of evaluation work flow process, thus while improving result of calculation accuracy, separately improve the versatility of calculated data.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments of the present invention, be clearly and completely described technical scheme of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
A kind of Electric Power System Node Voltage computational methods as shown in Figure 1, Electric Power System Node Voltage computational methods comprise the steps:
The first step, electrical network gathers, gather electrical network to form, and determine quantity, the Type and distribution position of node to be calculated in electrical network, and will network configuration and the component parameters of each node obtained be gathered, and these number sequences be organized in unified summary sheet, and be assembled into unified Eexcel electrical form by computer system;
Second step, select node, from gathering the respective nodes A selecting voltage to be calculated each node of obtaining as required, selected node comprises the meritorious node of at least one known active power and voltage magnitude and the idle node B of at least one known reactive power and voltage magnitude, a meritorious node A and idle node B forms a node group, and selects 2 node groups in every bar circuit;
3rd step, bring computing formula into, according to network configuration and the component parameters of selected economize on electricity, generate meritorious node iterative computation formula and idle node iteration radix presses formula, and computing formula to be incorporated in Eexcel electrical form in respective nodes content of parameter;
4th step, calculation of parameter, is first updated to meritorious node iterative computation formula and idle node iteration radix respectively by formula, and obtains the current injection quantity of each node as calculated by predeterminated voltage initial value; Then calculate the actual active power of each meritorious node according to current injection quantity, then the actual active power calculated is brought in meritorious node iterative computation formula, and obtain the actual voltage value of meritorious node; Finally the actual voltage value of the meritorious node calculated is brought into idle node iteration radix by formula, the actual voltage value of idle node can be obtained, calculating formula preset value to be directly inputted in Eexcel electrical form edit the correspondence position of formula.
5th cloth, inspection calculates, be fed back into the 4th step and reset Initial Voltage Value, and the Initial Voltage Value reset is brought into meritorious node iterative computation formula and idle node iteration radix by formula, and calculate, then the concrete numerical value obtained and the numerical value calculating acquisition are before compared, with this judge each node voltage calculated value and computational methods whether accurate.
In the present embodiment, when the node group in described second step to be distributed on same circuit quantity for two groups or more, then isolated by least one resistance equipment between two adjacent group node groups.
In the present embodiment, the inspection of the 5th described step calculates, and each meritorious node and idle node all carry out three times and calculate, and overall test calculation times is 6 times.
Embodiment 2
A kind of Electric Power System Node Voltage computational methods, Electric Power System Node Voltage computational methods comprise the steps:
The first step, electrical network gathers, gather electrical network to form, and determine quantity, the Type and distribution position of node to be calculated in electrical network, and will network configuration and the component parameters of each node obtained be gathered, and these number sequences be organized in unified summary sheet, and be assembled into unified Eexcel electrical form by computer system;
Second step, select node, from gathering the respective nodes A selecting voltage to be calculated each node of obtaining as required, selected node comprises the meritorious node of at least one known active power and voltage magnitude and the idle node B of at least one known reactive power and voltage magnitude, a meritorious node A and idle node B forms a node group, and selects 3 node groups in every bar circuit;
3rd step, bring computing formula into, according to network configuration and the component parameters of selected economize on electricity, generate meritorious node iterative computation formula and idle node iteration radix presses formula, and computing formula to be incorporated in Eexcel electrical form in respective nodes content of parameter;
4th step, calculation of parameter, is first updated to meritorious node iterative computation formula and idle node iteration radix respectively by formula, and obtains the current injection quantity of each node as calculated by predeterminated voltage initial value; Then calculate the actual active power of each meritorious node according to current injection quantity, then the actual active power calculated is brought in meritorious node iterative computation formula, and obtain the actual voltage value of meritorious node; Finally the actual voltage value of the meritorious node calculated is brought into idle node iteration radix by formula, the actual voltage value of idle node can be obtained, calculating formula preset value to be directly inputted in Eexcel electrical form edit the correspondence position of formula.
5th cloth, inspection calculates, be fed back into the 4th step and reset Initial Voltage Value, and the Initial Voltage Value reset is brought into meritorious node iterative computation formula and idle node iteration radix by formula, and calculate, then the concrete numerical value obtained and the numerical value calculating acquisition are before compared, with this judge each node voltage calculated value and computational methods whether accurate.
In the present embodiment, when the node group in described second step to be distributed on same circuit quantity for two groups or more, then isolated by least one resistance equipment between two adjacent group node groups.
In the present embodiment, the inspection of the 5th described step calculates, and each meritorious node and idle node all carry out 4 times and calculate, and overall test calculation times is 12 times.
Node selection mode of the present invention is unified and standard, computational process simple and flexible, can effectively simplify Electric Power System Node Voltage computational process on the one hand, improve computational efficiency, on the other hand can specification node selection, node voltage calculation process, improve uniformity and the normalization of evaluation work flow process, thus while improving result of calculation accuracy, separately improve the versatility of calculated data.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (3)
1. Electric Power System Node Voltage computational methods, is characterized in that: described Electric Power System Node Voltage computational methods comprise the steps:
The first step, electrical network gathers, and gathers electrical network and forms, and determine quantity, the Type and distribution position of node to be calculated in electrical network, and will gather network configuration and the component parameters of each node obtained, and be organized in unified summary sheet by these number sequences;
Second step, select node, from gathering the respective nodes selecting voltage to be calculated each node of obtaining as required, selected node comprises the meritorious node of at least one known active power and voltage magnitude and the idle node of at least one known reactive power and voltage magnitude, a meritorious node and an idle node form a node group, and all can select at least one node group in every bar circuit;
3rd step, brings computing formula into, and according to network configuration and the component parameters of selected economize on electricity, the meritorious node iterative computation formula of generation and idle node iteration radix press formula;
4th step, calculation of parameter, is first updated to meritorious node iterative computation formula and idle node iteration radix respectively by formula, and obtains the current injection quantity of each node as calculated by predeterminated voltage initial value; Then calculate the actual active power of each meritorious node according to current injection quantity, then the actual active power calculated is brought in meritorious node iterative computation formula, and obtain the actual voltage value of meritorious node; Finally the actual voltage value of the meritorious node calculated is brought into idle node iteration radix by formula, the actual voltage value of idle node can be obtained;
5th step, inspection calculates, be fed back into the 4th step and reset Initial Voltage Value, and the Initial Voltage Value reset is brought into meritorious node iterative computation formula and idle node iteration radix by formula, and calculate, then the concrete numerical value obtained and the numerical value calculating acquisition are before compared, with this judge each node voltage calculated value and computational methods whether accurate.
2. a kind of Electric Power System Node Voltage computational methods according to claim 1, it is characterized in that: when the node group in described second step to be distributed on same circuit quantity for two groups or more, then isolated by least one resistance equipment between two adjacent group node groups.
3. a kind of Electric Power System Node Voltage computational methods according to claim 1, it is characterized in that: the inspection of the 5th described step calculates, each meritorious node and idle node all carry out at least three times and calculate, if and when the node group quantity on a circuit is two or more, then the inspection calculation times of the 5th step is at least twice of node group number on this article of circuit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106681959A (en) * | 2016-11-17 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Method for calculating voltage fluctuation in power distribution network |
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| CN103928925A (en) * | 2014-04-17 | 2014-07-16 | 国家电网公司 | Power distribution network load flow calculation method based on forward-backward sweep |
| CN102832616B (en) * | 2012-08-29 | 2015-03-18 | 国核电力规划设计研究院 | Node voltage calculation method and device for power system |
| CN104868496A (en) * | 2015-05-25 | 2015-08-26 | 华南理工大学 | Optical record active power cooperation output method based on expansion QV node trend |
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Patent Citations (5)
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| US20130226482A1 (en) * | 2012-02-24 | 2013-08-29 | Hongbo Sun | Decoupled Three-Phase Power Flow Analysis Method for Unbalanced Power Distribution Systems |
| CN102832616B (en) * | 2012-08-29 | 2015-03-18 | 国核电力规划设计研究院 | Node voltage calculation method and device for power system |
| CN103353918A (en) * | 2013-04-24 | 2013-10-16 | 国家电网公司 | Method for selecting initial values of three-phase Newton-Raphson method power flow calculation of power distribution network |
| CN103928925A (en) * | 2014-04-17 | 2014-07-16 | 国家电网公司 | Power distribution network load flow calculation method based on forward-backward sweep |
| CN104868496A (en) * | 2015-05-25 | 2015-08-26 | 华南理工大学 | Optical record active power cooperation output method based on expansion QV node trend |
Cited By (1)
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| CN106681959A (en) * | 2016-11-17 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Method for calculating voltage fluctuation in power distribution network |
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