CN103107539A - Loop closing converting risk processing method and system of regional power grid - Google Patents
Loop closing converting risk processing method and system of regional power grid Download PDFInfo
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- CN103107539A CN103107539A CN2013100625910A CN201310062591A CN103107539A CN 103107539 A CN103107539 A CN 103107539A CN 2013100625910 A CN2013100625910 A CN 2013100625910A CN 201310062591 A CN201310062591 A CN 201310062591A CN 103107539 A CN103107539 A CN 103107539A
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Abstract
The invention discloses a loop closing converting risk processing method of a regional power grid. The loop closing converting risk processing method of the regional power grid comprises steps: obtaining the line impedance of each loop closing converting line in the regional power grid and load currents, voltage phase angles and amplitudes of buses of two sides of each loop closing converting line; calculating loop closing currents on the buses of the two sides of each loop closing converting line according to the obtained data; comparing the calculated loop closing currents respectively with the current-carrying capacity of the corresponding bus; judging the loop closing converting risk level of the regional power grid according to the compared results, and sending early warning signals. In addition, the invention further discloses a loop closing converting risk processing system of the regional power grid. The loop closing converting risk processing method and the loop closing converting risk processing system of the regional power grid can judge the loop closing converting risk level of the regional power grid and send early warning signals through comparing the loop closing currents with the current-carrying capacity of the buses. The loop closing converting risk processing method and the loop closing converting risk processing system of the regional power grid can help power grid operators avoid the loop closing converting risks and conduct the loop closing converting operation more reasonably, so that the success rate of loop closing converting and the power distribution reliability of the power grid are improved.
Description
Technical field
The present invention relates to cyclization and turn electro-technical field, the cyclization that the cyclization that relates in particular to a kind of regional power grid turns electric wind danger processing method and a kind of regional power grid turns electric wind danger treatment system.
Background technology
Regional power grid generally adopts the supply power mode of closed loop design, open loop operation.Each load is by single bussed supply under this supply power mode, different buses with load area isolate with interconnection switch, form the supply load island, interconnection switch cut-offs operation under normal circumstances.Cyclization turns electricity operation and refers to: have under the distribution Connection Mode of interconnection switch, due to the reasons such as maintenance needs when out of service, the grid switching operation by interconnection switch and transformer station's outlet switch transfers a load onto the opposite side feeder line when bus.Fig. 1 is that in power distribution network, a common cyclization turns the wiring schematic diagram that electricity operates, take common " 2-1 " Connection Mode of medium voltage distribution network shown in Figure 1 as example, interconnection switch is in off-state when normally moving, the both sides transmission line is contact not, when a side bus wherein needs when out of service, the operations staff closes interconnection switch, and the outlet switch of transformer station disconnects, the bus that need are out of service with circuit on load transfer to the opposite side bus and power.In this process, interior two buses of a period of time to occur and directly pass through connection, owing to existing voltage vector poor between bus, according to Ohm's law, to produce on the line newly-increased electric current, and originally load current is arranged on circuit, according to principle of stacking, two electric currents superpose, and form the cyclization electric current in the cyclization process.
The cyclization electric current mainly is subjected to busbar voltage phasor difference, line impedance size and line load the influence of peak current, its numerical value electric current that far overloads under certain condition, namely will flow through very large electric current in circuit in the cyclization process, the ampacity (the heat-stable current value of circuit) that surpasses circuit, the circuit heating seriously, works the mischief to power supply unit and network security when long-play.Involutive ring turns the processing of electric operational risk at present, is mostly to rely at the scene operations staff's experience to judge whether to carry out cyclization.This way has very large uncertainty, not only is easy to occur judgment bias, and the involutive ring electric current lacks the analysis of quantification, can't the quantitative analysis cyclization turn the risk status of electricity.Particularly for the regional power grid that comprises a large amount of cyclizations and turn electric line, need more urgently a kind of accurately reasonably method judge that each cyclization turns the risk level of electric line, carry out cyclization for regional power grid and turn electricity work foundation is provided.
Summary of the invention
Based on this, the cyclization that the cyclization that the invention provides a kind of regional power grid turns electric wind danger processing method and a kind of regional power grid turns electric wind danger treatment system.
A kind of cyclization of regional power grid turns the dangerous processing method of electric wind, comprises the following steps:
Obtain that in regional power grid, each cyclization turns the line impedance of electric line and load current, voltage phase angle and the amplitude of two side bus;
Calculate described each cyclization according to the above-mentioned data of obtaining and turn cyclization electric current on electric line two side bus;
The described cyclization electric current that calculates is compared with the ampacity of corresponding bus respectively;
Turn the dangerous level of electric wind according to the cyclization of comparative result judging area electrical network, and send early warning signal.
Compare with general technology, the cyclization of regional power grid of the present invention turns electric wind danger processing method and take busbar carrying capacity as standard, the risk level that each cyclization in regional power grid turns electric line is carried out quantitative assessment, can come by the ampacity of contrast cyclization electric current and bus the cyclization in the judging area electrical network to turn electric wind by inches, and send early warning signal.The present invention can help the operation of power networks personnel to evade cyclization to turn electric wind danger, more reasonably carry out cyclization and turn the electricity operation.Thereby improve the power supply reliability that cyclization turns electric success rate and electrical network.
A kind of cyclization of regional power grid turns the dangerous treatment system of electric wind, comprises acquisition module, cyclization Current calculation module, comparison module and Executive Module;
Described acquisition module is used for obtaining each cyclization of regional power grid and turns the line impedance of electric line and load current, voltage phase angle and the amplitude of two side bus;
Described cyclization Current calculation module is for the cyclization electric current that turns according to described each cyclization of above-mentioned data calculating of obtaining on electric line two side bus;
Described comparison module, the described cyclization electric current that is used for calculating compares with the ampacity of corresponding bus respectively;
Described Executive Module is used for turning the dangerous level of electric wind according to the cyclization of comparative result judging area electrical network, and sends early warning signal.
Compare with general technology, the cyclization of regional power grid of the present invention turns electric wind danger treatment system and take busbar carrying capacity as standard, the risk level that each cyclization in regional power grid turns electric line is carried out quantitative assessment, can come by the ampacity of contrast cyclization electric current and bus the cyclization in the judging area electrical network to turn electric wind by inches, and send early warning signal.The present invention can help the operation of power networks personnel to evade cyclization to turn electric wind danger, more reasonably carry out cyclization and turn the electricity operation.Thereby improve the power supply reliability that cyclization turns electric success rate and electrical network.
Description of drawings
Fig. 1 is that in power distribution network, a common cyclization turns the wiring schematic diagram that electricity operates;
Fig. 2 is the schematic flow sheet that the cyclization of regional power grid of the present invention turns the dangerous processing method of electric wind;
Fig. 3 is the structural representation that the cyclization of regional power grid of the present invention turns the dangerous treatment system of electric wind.
Embodiment
For further setting forth the technological means that the present invention takes and the effect that obtains, below in conjunction with accompanying drawing and preferred embodiment, to technical scheme of the present invention, know and complete description.
See also Fig. 2, turn the schematic flow sheet of the dangerous processing method of electric wind for the cyclization of regional power grid of the present invention.The cyclization of regional power grid of the present invention turns the dangerous processing method of electric wind, comprises the following steps:
S201 obtains that in regional power grid, each cyclization turns the line impedance of electric line and load current, voltage phase angle and the amplitude of two side bus;
Gather the risk assessment information needed, comprise busbar voltage phase angle and amplitude, line parameter circuit value, the load current of circuit.When the cyclization of evaluation region electrical network turned the electric wind danger, the data that need to turn to a large amount of cyclizations electric line were processed.Specific practice can be that busbar voltage phase angle and amplitude data acquisition zone electrical network ancient name for China is large, the summer is little, the winter is large, the trend calculated data under little four kinds of operational modes of winter, the load current of circuit gathers maximum, two kinds of current values of average current, and line parameter circuit value still adopts the data of Study on Power Grid Planning.The data that collect store with certain form.
As one of them embodiment, obtain respectively large in the summer, the summer is little, the winter is large and little four kinds of regional power grid operation forms of winter under each cyclization turn voltage phase angle and the amplitude of electric line two side bus;
Obtain respectively the load current that under maximum current and two kinds of load current forms of average current each cyclization turns electric line two side bus;
Described each cyclization of above-mentioned data calculating that the S202 basis is obtained turns the cyclization electric current on electric line two side bus;
As one of them embodiment, the voltage that described cyclization is turned on electric line two side bus subtracts each other, and calculates the voltage drop between two side bus;
The described voltage drop of calculating and the line impedance that described cyclization turns electric line are divided by, calculate the newly-increased electric current that cyclization turns the electricity generation;
With the described newly-increased electric current that calculates respectively with two side bus on original load current stack, obtain described cyclization and turn cyclization electric current on electric line two side bus.
Based on the data that gather, utilize set algorithm to calculate, can obtain the numerical value of regional power grid cyclization electric current under various operational modes and load current.
According to the above-mentioned data of obtaining, summer is large, the summer is little, the winter is large and little four kinds of regional power grids operation form of winter and maximum current and two kinds of load current forms of average current make up, and described each cyclization is turned the data group that electric line two side bus are all set up eight kinds of corresponding forms;
Adopt respectively the data group of above-mentioned eight kinds of forms, calculate described each cyclization and turn cyclization electric current on electric line two side bus;
For example, concrete calculation process can be as follows:
Four elements are arranged in the busbar voltage data acquisition system, two elements are arranged in circuit load current data acquisition system, have 8 groups of data, therefrom select one group of data;
Utilize the data of selecting to carry out the cyclization Current calculation, concrete steps are identical with the cyclization Current calculation step that the single line cyclization turns in the dangerous appraisal procedure of electric wind;
Preserve result of calculation and by the name of data composite component, as selecting large mode of summer and maximum current, called after " summer is large-maximum ";
The data of selecting another group not yet to calculate are calculated, until all group data are all calculated.
The described cyclization electric current that S203 will calculate compares with the ampacity of corresponding bus respectively;
Cyclization calculates a large amount of result of calculation,, need to process result of calculation data analysis for convenience of the back, and concrete processing can mainly comprise following two steps:
Take the ampacity of circuit as contrast standard, the cyclization electric current surpasses ampacity and is labeled as " 0 ", and the cyclization electric current is labeled as " 1 " lower than ampacity, and the cyclization electric current of all circuits is processed, and transfers the cyclization electric current of famous value to logical value.
Calculate at a batch total result of calculation that result comprises both sides circuit cyclization electric current, with the logical value phase of circuit cyclization electric current in both sides after step 1 transforms with, the cyclization that obtains whole cyclization circuit turns electric value-at-risk, " 1 " be safety, " 0 " is danger.
The cyclization electric current that described each cyclization that the data batch total that adopts respectively above-mentioned eight kinds of forms is calculated turns on electric line two side bus compares with the ampacity of corresponding bus one by one.
S204 turns the dangerous level of electric wind according to the cyclization of comparative result judging area electrical network, and sends early warning signal.
As one of them embodiment, according to comparative result, judge that the cyclization that described each cyclization turns electric line turns the dangerous level of electric wind; Wherein, turn electric line for a cyclization, if the cyclization electric current on its two side bus all is no more than the ampacity of respective bus bars, judge that it is safety that cyclization that this cyclization turns electric line turns electric wind danger level, otherwise, judge that cyclization that this cyclization turns electric line turns electric wind danger level for dangerous.
As one of them embodiment, according to the result that compares respectively, judge that the cyclization that described each cyclization turns electric line turns the dangerous level of electric wind in the corresponding situation of the data group of above-mentioned eight kinds of forms; Wherein, turn electric line for a cyclization, if in the corresponding situation of a kind of data group of form, cyclization electric current on its two side bus all is no more than the ampacity of corresponding bus, judge that this cyclization turns electric line in the corresponding situation of the data group of this kind form, it is safety that its cyclization turns the dangerous level of electric wind, otherwise, judge that this cyclization turns electric line in the corresponding situation of the data group of this kind form, its cyclization turns the dangerous level of electric wind for dangerous.
According to cyclization result of calculation, the cyclization in regional power grid is turned the dangerous situation of electric wind carry out quantitative assessment, to seek cyclization and turn two kinds of minimum and maximum operational modes of electric wind danger, concrete steps can be as follows:
Circuit number take result of calculation as " 1 " removes in the bus way, and the percentage that obtains is defined as cyclization and turns electric success rate, calculates respectively the cyclization of respectively organizing result and turns electric success rate;
Cyclization of each group result is turned electricity turn calculatings of averaging of electric success rate, the cyclization that obtains regional power grid turns the equal success rate of level, and the cyclization that characterizes regional power grid turns the dangerous level of electric wind;
The cyclization of two groups of results under large operational mode of summer is turned the calculating of averaging of electric success rate, obtain the cyclization of regional power grid under large mode of summer and turn electric success rate, in like manner other operational modes are calculated;
The cyclization of four groups of results of maximum load current is turned the calculating of averaging of electric success rate, obtain regional power grid and turn electric success rate in the cyclization of maximum load current, in like manner average current is calculated;
Each cyclization of organizing result is turned electric success rate compare, two groups of results that the rate of succeeding is minimum and the highest characterize cyclization and turn two kinds of minimum and maximum operational modes of electric wind danger.
As one of them embodiment, after the cyclization according to comparative result judging area electrical network turns the dangerous level of electric wind, turn electric line for a cyclization, if judge that it is safety that its cyclization turns the dangerous level of electric wind, carries out cyclization to it according to schedule and turns the electricity operation;
Turn electric line for a cyclization, if judge that its cyclization turns the dangerous level of electric wind for dangerous, stops that it is carried out cyclization and turns the electricity operation.
As one of them embodiment, after the cyclization according to comparative result judging area electrical network turns the dangerous level of electric wind, turn electric line for a cyclization, if in the corresponding situation of the data group of eight kinds of forms, judge that its cyclization turns the dangerous level of electric wind and is safety, this cyclization is turned electric line and be divided into a class circuit;
Turn electric line for a cyclization, if in the corresponding situation of the data group of portion-form, judge that it is safety that its cyclization turns the dangerous level of electric wind, turns this cyclization electric line and is divided into two class circuits;
Turn electric line for a cyclization, if in the corresponding situation of the data group of eight kinds of forms, judge that its cyclization turns the dangerous level of electric wind and is danger, this cyclization is turned electric line and be divided into three class circuits.
Cyclization circuit classifying module turns electric line with many cyclizations classifies, and for all kinds of characteristics, cyclization in operation of power networks being turned the electricity operation provides guideline, specifically is classified as follows:
One class: if the result that obtains that this cyclization circuit calculates under all 8 groups of data is " 1 ", be a class cyclization circuit, can think that its cyclization turns electric wind dangerous very low, can carry out cyclization and turn the electricity operation when electrical network does not change on a large scale.
Two classes: be " 0 " if this cyclization circuit is organized the result that obtains of calculating under data in part, be two class cyclization circuits, can think that its cyclization turns electric wind dangerous relevant with operational mode, should be chosen in result of calculation as far as possible and carry out cyclization for the operational mode of " 1 " and turn the electricity operation.
Three classes: if the result that obtains that this cyclization circuit calculates under all 8 groups of data is " 0 ", be three class cyclization circuits, can think that its cyclization turns electric wind dangerous very high, should not carry out cyclization and turn the electricity operation.
Compare with general technology, the cyclization of regional power grid of the present invention turns electric wind danger processing method and take busbar carrying capacity as standard, the risk level that each cyclization in regional power grid turns electric line is carried out quantitative assessment, can come by the ampacity of contrast cyclization electric current and bus the cyclization in the judging area electrical network to turn electric wind by inches, and send early warning signal.The present invention can help the operation of power networks personnel to evade cyclization to turn electric wind danger, more reasonably carry out cyclization and turn the electricity operation.Thereby improve the power supply reliability that cyclization turns electric success rate and electrical network.
See also Fig. 3, turn the structural representation of the dangerous treatment system of electric wind for the cyclization of regional power grid of the present invention.The cyclization of regional power grid of the present invention turns the dangerous treatment system of electric wind, comprises acquisition module 301, cyclization Current calculation module 302, comparison module 303 and Executive Module 304;
Described acquisition module 301 is used for obtaining each cyclization of regional power grid and turns the line impedance of electric line and load current, voltage phase angle and the amplitude of two side bus;
Gather the risk assessment information needed, comprise busbar voltage phase angle and amplitude, line parameter circuit value, the load current of circuit.When the cyclization of evaluation region electrical network turned the electric wind danger, the data that need to turn to a large amount of cyclizations electric line were processed.Specific practice can be that busbar voltage phase angle and amplitude data acquisition zone electrical network ancient name for China is large, the summer is little, the winter is large, the trend calculated data under little four kinds of operational modes of winter, the load current of circuit gathers maximum, two kinds of current values of average current, and line parameter circuit value still adopts the data of Study on Power Grid Planning.The data that collect store with certain form.
Described cyclization Current calculation module 302 is for the cyclization electric current that turns according to described each cyclization of above-mentioned data calculating of obtaining on electric line two side bus;
As one of them embodiment, described cyclization Current calculation module comprises voltage drop computing module, newly-increased Current calculation module and laminating module;
Described voltage drop computing module, the voltage that is used for described cyclization is turned on electric line two side bus subtracts each other, and calculates the voltage drop between two side bus;
Described newly-increased Current calculation module is used for the described voltage drop that will calculate and the line impedance that described cyclization turns electric line and is divided by, and calculates the newly-increased electric current that cyclization turns electric generation;
Described laminating module, be used for the described newly-increased electric current that will calculate respectively with two side bus on original load current superpose, obtain described cyclization and turn cyclization electric current on electric line two side bus.
Described comparison module 303, the described cyclization electric current that is used for calculating compares with the ampacity of corresponding bus respectively;
Cyclization calculates a large amount of result of calculation, to data analysis, need to compare processing for convenience of the back to result of calculation.
Described Executive Module 304 is used for turning the dangerous level of electric wind according to the cyclization of comparative result judging area electrical network, and sends early warning signal.
As one of them embodiment, described Executive Module is used for according to comparative result, judges that the cyclization that described each cyclization turns electric line turns the dangerous level of electric wind; Wherein, turn electric line for a cyclization, if the cyclization electric current on its two side bus all is no more than the ampacity of respective bus bars, judge that it is safety that cyclization that this cyclization turns electric line turns electric wind danger level, otherwise, judge that cyclization that this cyclization turns electric line turns electric wind danger level for dangerous.
Compare with general technology, the cyclization of regional power grid of the present invention turns electric wind danger treatment system and take busbar carrying capacity as standard, the risk level that each cyclization in regional power grid turns electric line is carried out quantitative assessment, can come by the ampacity of contrast cyclization electric current and bus the cyclization in the judging area electrical network to turn electric wind by inches, and send early warning signal.The present invention can help the operation of power networks personnel to evade cyclization to turn electric wind danger, more reasonably carry out cyclization and turn the electricity operation.Thereby improve the power supply reliability that cyclization turns electric success rate and electrical network.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the cyclization of a regional power grid turns the dangerous processing method of electric wind, it is characterized in that, comprises the following steps:
Obtain that in regional power grid, each cyclization turns the line impedance of electric line and load current, voltage phase angle and the amplitude of two side bus;
Calculate described each cyclization according to the above-mentioned data of obtaining and turn cyclization electric current on electric line two side bus;
The described cyclization electric current that calculates is compared with the ampacity of corresponding bus respectively;
Turn the dangerous level of electric wind according to the cyclization of comparative result judging area electrical network, and send early warning signal.
2. the cyclization of regional power grid according to claim 1 turns the dangerous processing method of electric wind, it is characterized in that, described each cyclization of described calculating turns the step of the cyclization electric current on electric line two side bus, comprises the following steps:
The voltage that described cyclization is turned on electric line two side bus subtracts each other, and calculates the voltage drop between two side bus;
The described voltage drop of calculating and the line impedance that described cyclization turns electric line are divided by, calculate the newly-increased electric current that cyclization turns the electricity generation;
With the described newly-increased electric current that calculates respectively with two side bus on original load current stack, obtain described cyclization and turn cyclization electric current on electric line two side bus.
3. the cyclization of regional power grid according to claim 1 turns the dangerous processing method of electric wind, it is characterized in that, described cyclization according to comparative result judging area electrical network turns the step of the dangerous level of electric wind, comprises the following steps:
According to comparative result, judge that the cyclization that described each cyclization turns electric line turns the dangerous level of electric wind; Wherein, turn electric line for a cyclization, if the cyclization electric current on its two side bus all is no more than the ampacity of respective bus bars, judge that it is safety that cyclization that this cyclization turns electric line turns electric wind danger level, otherwise, judge that cyclization that this cyclization turns electric line turns electric wind danger level for dangerous.
4. the cyclization of regional power grid according to claim 3 turns the dangerous processing method of electric wind, it is characterized in that, after described cyclization according to comparative result judging area electrical network turns the step of the dangerous level of electric wind, comprises the following steps:
Turn electric line for a cyclization, if judge that it is safety that its cyclization turns the dangerous level of electric wind, carries out cyclization to it according to schedule and turns the electricity operation;
Turn electric line for a cyclization, if judge that its cyclization turns the dangerous level of electric wind for dangerous, stops that it is carried out cyclization and turns the electricity operation.
5. the cyclization of regional power grid according to claim 1 turns the dangerous processing method of electric wind, it is characterized in that, the described step of obtaining load current, voltage phase angle and the amplitude of line impedance that each cyclization in regional power grid turns electric line and two side bus comprises the following steps:
Obtain respectively large in the summer, the summer is little, the winter is large and little four kinds of regional power grid operation forms of winter under each cyclization turn voltage phase angle and the amplitude of electric line two side bus;
Obtain respectively the load current that under maximum current and two kinds of load current forms of average current each cyclization turns electric line two side bus;
Described each cyclization of described calculating turns the step of the cyclization electric current on electric line two side bus, comprises the following steps:
According to the above-mentioned data of obtaining, summer is large, the summer is little, the winter is large and little four kinds of regional power grids operation form of winter and maximum current and two kinds of load current forms of average current make up, and described each cyclization is turned the data group that electric line two side bus are all set up eight kinds of corresponding forms;
Adopt respectively the data group of above-mentioned eight kinds of forms, calculate described each cyclization and turn cyclization electric current on electric line two side bus;
The step that the described described cyclization electric current that will calculate compares with the ampacity of corresponding bus respectively comprises the following steps:
The cyclization electric current that described each cyclization that the data batch total that adopts respectively above-mentioned eight kinds of forms is calculated turns on electric line two side bus compares with the ampacity of corresponding bus one by one.
6. the cyclization of regional power grid according to claim 5 turns the dangerous processing method of electric wind, it is characterized in that, described cyclization according to comparative result judging area electrical network turns the step of the dangerous level of electric wind, comprises the following steps:
According to the result that compares respectively, judge that the cyclization that described each cyclization turns electric line turns the dangerous level of electric wind in the corresponding situation of the data group of above-mentioned eight kinds of forms; Wherein, turn electric line for a cyclization, if in the corresponding situation of a kind of data group of form, cyclization electric current on its two side bus all is no more than the ampacity of corresponding bus, judge that this cyclization turns electric line in the corresponding situation of the data group of this kind form, it is safety that its cyclization turns the dangerous level of electric wind, otherwise, judge that this cyclization turns electric line in the corresponding situation of the data group of this kind form, its cyclization turns the dangerous level of electric wind for dangerous.
7. the cyclization of regional power grid according to claim 6 turns the dangerous processing method of electric wind, it is characterized in that, after described cyclization according to comparative result judging area electrical network turns the step of the dangerous level of electric wind, comprises the following steps:
Turn electric line for a cyclization, if in the corresponding situation of the data group of eight kinds of forms, judge that its cyclization turns the dangerous level of electric wind and is safety, this cyclization is turned electric line and be divided into a class circuit;
Turn electric line for a cyclization, if in the corresponding situation of the data group of portion-form, judge that it is safety that its cyclization turns the dangerous level of electric wind, turns this cyclization electric line and is divided into two class circuits;
Turn electric line for a cyclization, if in the corresponding situation of the data group of eight kinds of forms, judge that its cyclization turns the dangerous level of electric wind and is danger, this cyclization is turned electric line and be divided into three class circuits.
8. the cyclization of a regional power grid turns the dangerous treatment system of electric wind, it is characterized in that, comprises acquisition module, cyclization Current calculation module, comparison module and Executive Module;
Described acquisition module is used for obtaining each cyclization of regional power grid and turns the line impedance of electric line and load current, voltage phase angle and the amplitude of two side bus;
Described cyclization Current calculation module is for the cyclization electric current that turns according to described each cyclization of above-mentioned data calculating of obtaining on electric line two side bus;
Described comparison module, the described cyclization electric current that is used for calculating compares with the ampacity of corresponding bus respectively;
Described Executive Module is used for turning the dangerous level of electric wind according to the cyclization of comparative result judging area electrical network, and sends early warning signal.
9. the cyclization of regional power grid according to claim 8 turns the dangerous treatment system of electric wind, it is characterized in that, described cyclization Current calculation module comprises voltage drop computing module, newly-increased Current calculation module and laminating module;
Described voltage drop computing module, the voltage that is used for described cyclization is turned on electric line two side bus subtracts each other, and calculates the voltage drop between two side bus;
Described newly-increased Current calculation module is used for the described voltage drop that will calculate and the line impedance that described cyclization turns electric line and is divided by, and calculates the newly-increased electric current that cyclization turns electric generation;
Described laminating module, be used for the described newly-increased electric current that will calculate respectively with two side bus on original load current superpose, obtain described cyclization and turn cyclization electric current on electric line two side bus.
10. the cyclization of regional power grid according to claim 8 turns the dangerous treatment system of electric wind, it is characterized in that, described Executive Module is used for according to comparative result, judges that the cyclization that described each cyclization turns electric line turns the dangerous level of electric wind; Wherein, turn electric line for a cyclization, if the cyclization electric current on its two side bus all is no more than the ampacity of respective bus bars, judge that it is safety that cyclization that this cyclization turns electric line turns electric wind danger level, otherwise, judge that cyclization that this cyclization turns electric line turns electric wind danger level for dangerous.
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| CN107492891A (en) * | 2017-08-25 | 2017-12-19 | 国网安徽省电力公司安庆供电公司 | Movable-type intelligent ring device and its application method |
| CN107959286A (en) * | 2017-11-13 | 2018-04-24 | 广东电网有限责任公司电力调度控制中心 | A kind of power transmission network dynamic reconfiguration method based on 3/2 mode of connection |
| CN110994610A (en) * | 2019-12-24 | 2020-04-10 | 国网天津市电力公司 | Monitoring information assistance-based loop closing method and device for power distribution network line |
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