CN102868159B - Method for monitoring electrical main topology integrity and control equipment - Google Patents
Method for monitoring electrical main topology integrity and control equipment Download PDFInfo
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Abstract
The invention provides a method for monitoring the integrity of an electrical main topology of a wind power plant power generation system and control equipment using the method. The monitoring method comprises the following steps: monitoring the state of each monitoring source influencing the electrical topology integrity in real time at a controller end of a wind power plant power generation system; and if the abnormity that the electrical topology integrity is damaged is determined to occur in any one of the monitored monitoring sources, stopping executing the power grid dispatching instruction. A control apparatus using the detection method, comprising: the first module is used for monitoring the states of all monitoring sources influencing the electrical topology integrity in real time; and the second module is used for stopping executing the power grid dispatching instruction if the abnormity which can cause the damage of the electrical topology integrity is determined to occur in any one monitoring source.
Description
Technical field
The application relates to a kind of monitoring method and equipment of electrical main topological integrity, particularly relate to a kind of method and equipment of the electrical main topological integrity for Real-Time Monitoring wind energy turbine set, thus distinguish the running status of plurality of devices exactly and make corresponding response.
Background technology
In wind generator system, intermittent wind-powered electricity generation causes the increase of voltage ripple of power network, system short circuit capacity, transient stability sexually revises, particularly outstanding under large-scale wind power concentrates access grid condition especially.Meanwhile, the electrical network end quality of power supply also can affect wind field, and such as grid disturbance causes blower fan off-grid, wind energy turbine set off-the-line, and unbalance voltage can cause unit vibration, overheated.
Study wind farm grid-connected key problem in technology, be by wind energy turbine set integrally unit access electrical network analyze, by improving the stability of wind farm grid-connected point (Point of Common Coupling is called for short PCC), improve with the grid-connected performance realizing whole wind energy turbine set.
The most important index of stability of PCC point is voltage stability, and voltage fluctuation directly affects the safe and stable operation of blower fan, and harm even involves accessed electric power networks.According to tidal current analysis technology, the voltage of PCC point mainly affects by the reactive power of this point: when consuming lagging reactive power and being too much, (under be called for short absorbing reactive power) voltage will decline; Otherwise (lower abbreviation sends reactive power) voltage will rise when sending lagging reactive power and being too much.By the reactive power dynamic equilibrium of some technical controlling PCC point, namely reach the effect that control PCC point voltage is stable.
Control the reactive power equilibrium of wind energy turbine set PCC point, be subject to two technology point restrictions: first must meet China's Power System Reactive Power " layering and zoning " Controlling principle, secondly must take into full account the control mechanism in wind power plant reactive power source.
Wind power plant reactive power source mainly contains two kinds: blower fan and concentrated reactive-load compensation equipment.Concentrate reactive-load compensation equipment, such as the reactive power equilibrium of static reactive (as SVC) device to wind energy turbine set serves active and effective effect, but also there is the defect of cost, loss and stability, and fan operation is worked poor.Blower fan has the ability additionally sending reactive power, but the free control of unit can cause wind power plant reactive power in-fighting, cannot reach specified control target.
Figure 1A and Figure 1B respectively illustrates the electrical network topology using two kinds of SVC general.In wind power system as shown in FIG. 1A and 1B, low-voltage bus bar has accessed many wind-powered electricity generation current collection circuits, such circuit only consume reactive power; In addition, SVC accesses low-voltage bus bar equally, controls it and sends or absorbing reactive power, makes the voltage of PCC in allowed band.In topology shown in Figure 1B, use multiple SVC, and grid-connected by multiple grid-connected transformer.
But the most outstanding feature of wind power generation is the uncertainty of wind-force size.When wind-force is very little, blower fan is in holding state, and the electric current of wind energy turbine set PCC point is very little.When fault causes the tripping operation of wind energy turbine set wind-powered electricity generation current collection line switching, or when draught fan group is shut down in a large number, the electric current of wind energy turbine set PCC point is also very little.Voltage for remote scheduling controls automatically (AVC, Auto Voltage Control), and main website cannot identify the running status of even None-identified wind energy turbine set fast, so can continue to send remote control commands, requires that wind energy turbine set performs described order.Holding state and the actual situation broken down of wind energy turbine set is in due to blower fan cannot be distinguished, therefore when wind energy turbine set topological relation destroys, the instruction that also continuation execution dispatching of power netwoks AVC main website sends sends or absorbing reactive power, worsens voltage fluctuation, probably causes the fault that makes new advances.
Summary of the invention
The object of the present invention is to provide a kind of monitoring method and equipment of electrical main topological integrity of wind energy turbine set electricity generation system, Real-Time Monitoring affects the state in each monitoring source of the electrical main topological integrity of wind energy turbine set, distinguish wind-force exactly to fluctuate the standby and physical fault of the blower fan that causes, thus make corresponding response, improve the stability of a system.
According to an aspect of the present invention, there is provided a kind of monitoring method of electrical main topological integrity of wind energy turbine set electricity generation system, the control appliance being included in wind energy turbine set electricity generation system performs following steps: Real-Time Monitoring affects the state in each monitoring source of electric topology integrality; If determine that the exception that will cause electric topology integrity violations occurs in any one monitoring source of monitoring, then stop performing dispatching of power netwoks instruction.
Automatically the step that (AVC) equipment performs described monitoring method can be controlled by wind energy turbine set voltage.
The described monitoring source affecting electric topology integrality can comprise following at least one: the high voltage bus of wind energy turbine set electricity generation system the wind-powered electricity generation of site sends low-voltage bus bars all in circuit, wind energy turbine set, all grid-connected transformers and all current collection circuits.Wherein, it is monitored that described all current collection circuits can be used as a current collection path monitoring source, and described all grid-connected transformers to can be used as a grid-connected transformer monitoring source monitored.
Described wind energy turbine set AVC equipment gathers the state information in each monitoring source by the voltage transformer summation current transformer being arranged on each monitoring source place described in electrical network, to monitor the state in each monitoring source described.
When monitor and the electric current that the wind-powered electricity generation of site sends circuit be less than predetermined operating current threshold value and high voltage bus voltage lower than predetermined operating voltage threshold value time, the exception that wind-powered electricity generation is sent circuit and occurred to cause electric topology integrity violations can be determined.
When monitor high voltage bus or arbitrary low-voltage bus bar be short-circuited fault time, can determine that the exception that will cause electric topology integrity violations occurs for described high voltage bus or low-voltage bus bar.
When monitoring all grid-connected transformers and breaking down, can determine that the exception that will cause electric topology integrity violations occurs as a grid-connected transformer monitoring source described grid-connected transformer.
When the electric current monitoring each current collection circuit is less than predetermined operating current threshold value, and its blower fan connected all does not generate electricity, then can determine that the exception that will cause electric topology integrity violations occurs as a current collection path monitoring source all current collection circuits.
When monitoring high voltage bus or arbitrary low-voltage bus bar electric data acquisition loop one phase or heterogeneous disconnection, can determine that the exception that will cause electric topology integrity violations occurs for described high voltage bus or low-voltage bus bar.
When monitoring electric data acquisition loop one phase of arbitrary grid-connected transformer or heterogeneous disconnection, can determine that described grid-connected transformer breaks down.
Send electric data acquisition loop one phase of circuit or heterogeneous disconnection when monitoring wind-powered electricity generation, cause and site electric data cannot normal acquisition time, the exception that described wind-powered electricity generation is sent circuit and occurred to cause electric topology integrity violations can be determined.
Described dispatching of power netwoks order be Reactive Power Control order, grid-connected point voltage control command and and site power factor controlling order at least one.
The wind-powered electricity generation that described predetermined operating current threshold value can be set to also site sends 5% ~ 8% of the rated operational current of circuit, and described predetermined operating voltage threshold value can be set to and the wind-powered electricity generation of site sends 20% of the rated operational voltage of circuit.
Described predetermined operating current threshold value can be set to 5% ~ 8% of the rated operational current of current collection circuit.
According to a further aspect in the invention, a kind of control appliance of monitoring electrical main topological integrity in wind energy turbine set electricity generation system is provided, comprises: the first module, affect the state in each monitoring source of electric topology integrality for Real-Time Monitoring; Second module, if for determining that the exception that will cause electric topology integrity violations occurs in any one monitoring source of monitoring, then stop performing dispatching of power netwoks instruction.
Described control appliance can be automatically control (AVC) equipment by wind energy turbine set voltage.
The described monitoring source affecting electric topology integrality can comprise following at least one: the high voltage bus of wind energy turbine set electricity generation system the wind-powered electricity generation of site sends low-voltage bus bars all in circuit, wind energy turbine set, all grid-connected transformers and all current collection circuits.Wherein, it is monitored that described all current collection circuits can be used as a current collection path monitoring source, and described all grid-connected transformers to can be used as a grid-connected transformer monitoring source monitored.
Described wind energy turbine set AVC equipment gathers the state information in each monitoring source by the voltage transformer summation current transformer being arranged on each monitoring source place described in electrical network, to monitor the state in each monitoring source described.
When the first module monitors to and the electric current that the wind-powered electricity generation of site sends circuit be less than predetermined operating current threshold value and high voltage bus voltage lower than predetermined operating voltage threshold value time, the second module can determine the exception that wind-powered electricity generation is sent circuit and occurred to cause electric topology integrity violations.
When the first module monitors is short-circuited fault to high voltage bus or arbitrary low-voltage bus bar, the second module can determine that the exception that will cause electric topology integrity violations occurs for described high voltage bus or low-voltage bus bar.
When the first module monitors breaks down to all grid-connected transformers, the second module can determine that the exception that will cause electric topology integrity violations occurs as a grid-connected transformer monitoring source described grid-connected transformer.
When the first module monitors is less than predetermined operating current threshold value to the electric current of each current collection circuit, and its blower fan connected all does not generate electricity, then the second module can determine that the exception that will cause electric topology integrity violations occurs as a current collection path monitoring source all current collection circuits.
When the first module monitors is to high voltage bus or arbitrary low-voltage bus bar electric data acquisition loop one phase or heterogeneous disconnection, the second module can determine that the exception that will cause electric topology integrity violations occurs for described high voltage bus or low-voltage bus bar.
When the first module monitors is to electric data acquisition loop one phase of arbitrary grid-connected transformer or heterogeneous disconnection, the second module can determine that described grid-connected transformer breaks down.
When the first module monitors sends electric data acquisition loop one phase of circuit or heterogeneous disconnection to wind-powered electricity generation, cause and site electric data cannot normal acquisition time, the second module can determine the exception that described wind-powered electricity generation is sent circuit and occurred to cause electric topology integrity violations.
Described dispatching of power netwoks order can be Reactive Power Control order, grid-connected point voltage control command and and site power factor controlling order at least one.
Described predetermined operating current threshold value can be set to and the wind-powered electricity generation of site sends 5% ~ 8% of the rated operational current of circuit, and described predetermined operating voltage threshold value can be set to and the wind-powered electricity generation of site sends 20% of the rated operational voltage of circuit.
Described predetermined operating current threshold value can be set to 5% ~ 8% of the rated operational current of current collection circuit.
Accompanying drawing explanation
By the description carried out below in conjunction with accompanying drawing, above and other object of the present invention and feature will become apparent, wherein:
Figure 1A and Figure 1B is the schematic diagram that the General Electric's network topology using static reactive equipment (SVC) is shown respectively;
Fig. 2 is the schematic diagram of the wind energy turbine set AVC system illustrated for realizing monitoring method of the present invention;
Fig. 3 is the schematic diagram in the monitoring source of the monitoring method monitoring that electrical main topological integrity of the present invention is shown;
Fig. 4 is the flow chart of the monitoring method that electrical main topological integrity is according to an exemplary embodiment of the present invention shown.
Embodiment
Below, embodiments of the invention are described in detail with reference to accompanying drawing.
Can in the master control end realization of wind energy turbine set AVC system according to the monitoring method of electrical main topological integrity of the present invention and equipment.Fig. 2 illustrates the logical architecture of the wind energy turbine set AVC system for realizing monitoring method of the present invention.Monitoring method according to electrical main topological integrity of the present invention can realize in the wind energy turbine set AVC master controller shown in Fig. 2, or realizes in the specific installation be connected with described wind energy turbine set AVC master controller.The monitoring method of electrical main topological integrity of the present invention can be embodied as software module, firmware or hardware, is arranged in described wind energy turbine set AVC master controller or described connected specific installation.For convenience of description, the situation of the monitoring method realizing electrical main topological integrity of the present invention in wind energy turbine set AVC master controller is exemplarily described in.
When wind energy turbine set exists short trouble, blower fan and SVC impotentia perform control command, if compulsory execution can cause Fan Equipment fault, or effect cannot reach, and also may cause new, more serious electric network fault; When also electric data acquisition loop, site is abnormal, correct electric data cannot be obtained, so correct control fill order cannot be calculated, if compulsory execution can cause Fan Equipment fault, or contrary control effects.
Therefore, in the present invention, the electrical main topological integrity of wind energy turbine set is defined as operation troubles does not occur each parts in wind energy turbine set, draught fan group entirety is in generating state or holding state, main switch are in closure state, wind energy turbine set keeps and net state and acquisition circuit normal.
In general, the main cause that the electrical main topological integrity of wind energy turbine set is destroyed is: 1) grid-connected transformer fault, low-voltage bus bar fault; 2) wind energy turbine set loses the state of being incorporated into the power networks, as PCC point breaker disconnects; 3) wind energy turbine set loses all wind-powered electricity generation current collection circuits; Or 4) wind-powered electricity generation sends that the electric acquisition circuit of circuit or any bus is abnormal to be disconnected.The triggering of any one Slope protection above is thought that topological integrity destroys, now must stop responding teleinstruction.
With reference to Fig. 2, the wind-powered electricity generation of wind energy turbine set AVC system is sent circuit and be set to PCC point.
Wind energy turbine set AVC master controller is communicated with each fan master control system by communication network (as Networks of Fiber Communications), for carrying out transfer of data with each fan master control system and to each fan master control system transmitting order to lower levels, and such as Reactive Power Control order.When the main topological integrity of wind energy turbine set destroys, by optical fiber communication mode rapid delivery power network dispatching system, make it clearly this information, rationally revise its dispatching command.On the other hand, wind energy turbine set AVC master controller gathers the data such as blower fan, bus, circuit, SVC in wind energy turbine set, and to the data analysis gathered, thus send reactive power instruction to whole audience blower fan.Wherein, according to exemplary embodiment of the present invention, the state in each monitoring source affecting electric topology integrality monitored in real time by wind energy turbine set AVC master controller.
As shown in Figure 2, wind energy turbine set AVC master controller gathers the state in each monitoring source affecting electric topology integrality by being arranged on voltage transformer in relevant device as each in the wind energy turbine set in the topology of Figure 1A and Figure 1B and current transformer, if determine electric topology destroy integrity, then stop performing electric field dispatch command.
In addition, described wind energy turbine set AVC system also comprises the AVC main website and monitor terminal with user interface.
Fig. 3 schematically shows the monitoring source (with the parts of oval mark in figure) of the monitoring method monitoring of electrical main topological integrity of the present invention.With reference to Fig. 3, the described monitoring source affecting electric topology integrality includes but not limited to, the high voltage bus of wind energy turbine set electricity generation system the wind-powered electricity generation of site sends low-voltage bus bars all in circuit, wind energy turbine set, all grid-connected transformers and all current collection circuits.Wherein, using the current collection path monitoring source of all current collection circuits as monitoring, and using described all grid-connected transformers as a grid-connected transformer monitoring source.That is, only when all current collection circuits all quit work, just think that the exception that will cause electric topology integrity violations occurs in current collection path monitoring source, cause electrical main topological integrity to be destroyed; In like manner, only when all grid-connected transformers all break down, just think that the exception that will cause electric topology integrity violations occurs in grid-connected transformer source, cause electrical main topological integrity to be destroyed.
Fig. 4 is the flow chart of the monitoring method that electrical main topological integrity is according to an exemplary embodiment of the present invention shown.
With reference to Fig. 4, affect the state in each monitoring source of electric topology integrality in step S410, AVC master controller Real-Time Monitoring.Wherein, AVC master controller gathers the state information in each monitoring source by the voltage transformer summation current transformer being arranged on each monitoring source place described in electrical network, to monitor the state in each monitoring source described.
Determine whether each monitoring source of monitoring the exception by causing electric topology integrity violations occurs in step S420, AVC master controller.
According to exemplary embodiment of the present invention, when the state information gathered by voltage transformer summation current transformer is monitored and the electric current that the wind-powered electricity generation of site sends circuit is less than predetermined operating current threshold value, and high voltage bus voltage lower than predetermined operating voltage threshold value time, determine the exception that wind-powered electricity generation is sent circuit and occurred to cause electric topology integrity violations.Wherein, described predetermined operating current threshold value can be set to and the wind-powered electricity generation of site sends 5% ~ 8% of the rated operational current of circuit, and described predetermined operating voltage threshold value can be set to and the wind-powered electricity generation of site sends 20% of the rated operational voltage of circuit.
According to another exemplary embodiment of the present invention, electric data acquisition loop one phase of circuit or heterogeneous disconnection is sent when monitoring wind-powered electricity generation, cause and site electric data cannot normal acquisition time, determine described wind-powered electricity generation send circuit occur will cause electric topology integrity violations.
According to exemplary embodiment of the present invention, when monitor high voltage bus or arbitrary low-voltage bus bar be short-circuited fault time, determine that the exception that will cause electric topology integrity violations occurs for described high voltage bus or low-voltage bus bar.Wherein, when monitoring high voltage bus or arbitrary low-voltage bus bar electric data acquisition loop one phase or heterogeneous disconnection, determine that the exception that will cause electric topology integrity violations occurs for described high voltage bus or low-voltage bus bar.
According to exemplary embodiment of the present invention, when monitoring all grid-connected transformers and breaking down, determine that the exception that will cause electric topology integrity violations occurs described grid-connected transformer.Wherein, when monitoring electric data acquisition loop one phase of arbitrary grid-connected transformer or heterogeneous disconnection, correct power calculation value etc. cannot be obtained by causing, therefore determining that described grid-connected transformer breaks down.
According to exemplary embodiment of the present invention, when the electric current monitoring each current collection circuit is less than predetermined operating current threshold value, and its blower fan connected all does not generate electricity, then determine that the exception that will cause electric topology integrity violations occurs as a current collection path monitoring source all current collection circuits.Described predetermined operating current threshold value can be set to 5% ~ 8% of the rated operational current of current collection circuit.If determine that the exception that will cause electric topology integrity violations occurs in any one monitoring source of monitoring in step S430, AVC master controller, then stop performing electric field dispatch command in step S440, AVC master controller.Described electric field dispatching command can be Reactive Power Control order, grid-connected point voltage control command and and site power factor controlling order at least one.
In sum, determine by the running status of electric component each in Real-Time Monitoring wind energy turbine set the situation destroying electrical main topological integrity in time according to the monitoring method of electrical main topological integrity of the present invention and equipment, determine that wind energy turbine set electrical main topological integrity is destroyed in time, stop responsive electricity grid dispatch command, wind energy turbine set rationally and is more safely run.
Although show and describe the present invention with reference to preferred embodiment, it should be appreciated by those skilled in the art that when not departing from the spirit and scope of the present invention be defined by the claims, various amendment and conversion can be carried out to these embodiments.
Claims (16)
1. a monitoring method for the electrical main topological integrity of wind energy turbine set electricity generation system, the control appliance being included in wind energy turbine set electricity generation system performs following steps:
Real-Time Monitoring affects the state in each monitoring source of electrical main topological integrity;
If determine that the exception that will electrical main topological integrity caused to destroy occurs in any one monitoring source of monitoring, then stop performing dispatching of power netwoks instruction,
Wherein, described electrical main topological integrity be defined as that operation troubles does not occur each parts in wind energy turbine set, draught fan group entirety is in generating state or holding state, main switch are in closure state, wind energy turbine set keeps and net state and acquisition circuit normal;
Wherein, described any one monitoring source determining to monitor occurs the processing procedure of the exception causing electrical main topological integrity to be destroyed to comprise:
When monitor and the electric current that the wind-powered electricity generation of site sends circuit be less than the first predetermined operating current threshold value and high voltage bus voltage lower than predetermined operating voltage threshold value time, determine the exception that wind-powered electricity generation is sent circuit and occurred to cause electrical main topological integrity to be destroyed; And,
When monitor high voltage bus or arbitrary low-voltage bus bar be short-circuited fault time, determine that the exception that will electrical main topological integrity caused to destroy occurs for described high voltage bus or low-voltage bus bar; And,
When monitoring all grid-connected transformers and breaking down, determine that the exception that will electrical main topological integrity caused to destroy occurs as a grid-connected transformer monitoring source described grid-connected transformer; And,
When the electric current monitoring each current collection circuit is less than the second predetermined operating current threshold value, and its blower fan connected is not when all generating electricity, determine that the exception that will electrical main topological integrity caused to destroy occurs as a current collection path monitoring source all current collection circuits; And,
Send electric data acquisition loop one phase of circuit or heterogeneous disconnection when monitoring wind-powered electricity generation, cause and site electric data cannot normal acquisition time, determine the exception that described wind-powered electricity generation is sent circuit and occurred to cause electrical main topological integrity to be destroyed.
2. monitoring method as claimed in claim 1, wherein, is performed the step of described monitoring method by wind energy turbine set voltage automatic control equipment.
3. monitoring method as claimed in claim 2, wherein, described wind energy turbine set voltage automatic control equipment gathers the state information in each monitoring source by the voltage transformer summation current transformer being arranged on each monitoring source place described in electrical network, to monitor the state in each monitoring source described.
4. monitoring method as claimed in claim 1, wherein, when monitoring high voltage bus or arbitrary low-voltage bus bar electric data acquisition loop one phase or heterogeneous disconnection, determine that the exception that will electrical main topological integrity caused to destroy occurs for described high voltage bus or low-voltage bus bar.
5. monitoring method as claimed in claim 1, wherein, when monitoring electric data acquisition loop one phase of arbitrary grid-connected transformer or heterogeneous disconnection, determines that described grid-connected transformer breaks down.
6. monitoring method as claimed in claim 2, wherein, described dispatching of power netwoks instruction is Reactive Power Control order, grid-connected point voltage control command and and at least one in the power factor controlling order of site.
7. monitoring method as claimed in claim 1, wherein, described first predetermined operating current threshold value is set to and the wind-powered electricity generation of site sends 5% ~ 8% of the rated operational current of circuit, and described predetermined operating voltage threshold value is set to and the wind-powered electricity generation of site sends 20% of the rated operational voltage of circuit.
8. monitoring method as claimed in claim 1, wherein, described second predetermined operating current threshold value is set to 5% ~ 8% of the rated operational current of current collection circuit.
9. in wind energy turbine set electricity generation system, monitor a control appliance for electrical main topological integrity, comprising:
First module, affects the state in each monitoring source of electrical main topological integrity for Real-Time Monitoring;
Second module, if for determining that the exception that will electrical main topological integrity caused to destroy occurs in any one monitoring source of monitoring, then stop performing dispatching of power netwoks instruction,
Wherein, described electrical main topological integrity be defined as that operation troubles does not occur each parts in wind energy turbine set, draught fan group entirety is in generating state or holding state, main switch are in closure state, wind energy turbine set keeps and net state and acquisition circuit normal;
Wherein, described second module is specifically for performing following process:
When the first module monitors to and the electric current that the wind-powered electricity generation of site sends circuit be less than the first predetermined operating current threshold value and high voltage bus voltage lower than predetermined operating voltage threshold value time, the second module determination wind-powered electricity generation sends the exception that circuit occurs to cause electrical main topological integrity to be destroyed; And,
When the first module monitors is short-circuited fault to high voltage bus or arbitrary low-voltage bus bar, the second module determines that the exception that will electrical main topological integrity caused to destroy occurs for described high voltage bus or low-voltage bus bar; And,
When the first module monitors breaks down to all grid-connected transformers, the second module determines that the exception that will electrical main topological integrity caused to destroy occurs as a grid-connected transformer monitoring source described grid-connected transformer; And,
When the first module monitors is less than the second predetermined operating current threshold value to the electric current of each current collection circuit, and its blower fan connected is not when all generating electricity, the second module determines that the exception that will electrical main topological integrity caused to destroy occurs as a current collection path monitoring source all current collection circuits; And,
When the first module monitors sends electric data acquisition loop one phase of circuit or heterogeneous disconnection to wind-powered electricity generation, cause and site electric data cannot normal acquisition time, the second module determines the exception that described wind-powered electricity generation is sent circuit and occurred to cause electrical main topological integrity to be destroyed.
10. control appliance as claimed in claim 9, wherein, described control appliance is wind energy turbine set voltage automatic control equipment.
11. control appliances as claimed in claim 10, wherein, described wind energy turbine set voltage automatic control equipment gathers the state information in each monitoring source by the voltage transformer summation current transformer being arranged on each monitoring source place described in electrical network, to monitor the state in each monitoring source described.
12. control appliances as claimed in claim 9, wherein, when the first module monitors is to high voltage bus or arbitrary low-voltage bus bar electric data acquisition loop one phase or heterogeneous disconnection, the second module determines that the exception that will electrical main topological integrity caused to destroy occurs for described high voltage bus or low-voltage bus bar.
13. control appliances as claimed in claim 9, wherein, when the first module monitors is to electric data acquisition loop one phase of arbitrary grid-connected transformer or heterogeneous disconnection, the second module determines that described grid-connected transformer breaks down.
14. control appliances as claimed in claim 10, wherein, described dispatching of power netwoks instruction be Reactive Power Control order, grid-connected point voltage control command and and site power factor controlling order at least one.
15. control appliances as claimed in claim 9, wherein, described first predetermined operating current threshold value is set to and the wind-powered electricity generation of site sends 5% ~ 8% of the rated operational current of circuit, and described predetermined operating voltage threshold value is set to and the wind-powered electricity generation of site sends 20% of the rated operational voltage of circuit.
16. control appliances as claimed in claim 9, wherein, described second predetermined operating current threshold value is set to 5% ~ 8% of the rated operational current of current collection circuit.
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| CN202206146U (en) * | 2011-08-23 | 2012-04-25 | 南京飓能电控自动化设备制造有限公司 | Dynamic voltage restorer (DVR)-based wind generating set low-voltage crossover supporting device |
| CN102496966A (en) * | 2011-11-28 | 2012-06-13 | 北京四方继保自动化股份有限公司 | Wind power station grid-connected operation power optimization control substation |
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| EP1672778A2 (en) * | 2004-12-17 | 2006-06-21 | General Electric Company | System and method for operating a wind farm under high wind speed conditions |
| CN202206146U (en) * | 2011-08-23 | 2012-04-25 | 南京飓能电控自动化设备制造有限公司 | Dynamic voltage restorer (DVR)-based wind generating set low-voltage crossover supporting device |
| CN102496966A (en) * | 2011-11-28 | 2012-06-13 | 北京四方继保自动化股份有限公司 | Wind power station grid-connected operation power optimization control substation |
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