CN116545119A - Power distribution network running state risk early warning system - Google Patents
Power distribution network running state risk early warning system Download PDFInfo
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- CN116545119A CN116545119A CN202310580800.4A CN202310580800A CN116545119A CN 116545119 A CN116545119 A CN 116545119A CN 202310580800 A CN202310580800 A CN 202310580800A CN 116545119 A CN116545119 A CN 116545119A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 57
- 238000012544 monitoring process Methods 0.000 claims abstract description 55
- 230000000737 periodic effect Effects 0.000 claims description 40
- 238000012502 risk assessment Methods 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims description 11
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a risk early warning system based on a power distribution network running state, which relates to the technical field of power grid risks, and solves the technical problem that whether an adjusted numerical value affects a subsequent monitoring station so as to affect the power transmission effect of the subsequent station.
Description
Technical Field
The invention belongs to the technical field of power grid risks, and particularly relates to a power distribution network running state risk early warning system.
Background
The distribution network is a power network which receives electric energy from a power transmission network or a regional power plant, distributes the electric energy to various users in situ through a distribution facility or distributes the electric energy to various users step by step according to voltage, and is composed of overhead lines, cables, towers, distribution transformers, isolating switches, reactive compensators, a plurality of auxiliary facilities and the like, and plays an important role in distributing the electric energy in the power network.
The invention discloses a power distribution network running state risk early warning system based on big data, which comprises the following components: the data acquisition module is used for acquiring the running state data of the power distribution network in real time; the data processing module is used for processing the acquired data to obtain state information describing the running state of the power distribution network; the running state evaluation module is used for evaluating the running state of the power distribution network according to the data processed by the data processing module; and the risk early warning module is used for evaluating the risk level of the running state of the power distribution network according to the evaluation result and sending out a corresponding alarm signal according to the obtained risk level. According to the invention, through analyzing the running state data of the power distribution network acquired in real time, the threat behavior of the power distribution network is further perceived, and the running state of the power distribution network is estimated and predicted according to the perceived threat behavior, so that an alarm is given, and an electric power worker can discover problems early, so that risks and losses possibly brought by the threat behavior in the power distribution network are reduced to the minimum.
In a specific operation process, a plurality of power distribution stations of the power distribution network can be influenced by external weather environments, fluctuation of power transmission values of the power distribution stations can be caused, early warning is conducted aiming at the occurrence of fluctuation, and numerical value adjustment is conducted, but whether the adjusted numerical value influences a follow-up monitoring station or not is not considered, so that the power transmission effect of the follow-up station is influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art; therefore, the invention provides a power distribution network running state risk early warning system, which is used for solving the technical problem that whether the adjusted numerical value affects the subsequent monitoring station or not is not considered, so that the power transmission effect of the subsequent station is affected.
To achieve the above objective, an embodiment according to a first aspect of the present invention provides a power distribution network operation state risk early warning system, which includes a parameter acquisition unit, a weather center, a risk early warning unit, and a display unit;
the risk early warning unit comprises a point fluctuation analysis unit, a graph construction unit, a risk analysis unit, an early warning unit, a storage unit, a main analysis unit, an adjustment unit and a signal generation unit;
the parameter acquisition unit is used for acquiring the real-time power parameters of the power distribution network monitoring station and transmitting the acquired real-time power parameters into the risk early warning unit;
the weather center is used for acquiring real-time weather data of the power distribution network monitoring station and transmitting the acquired real-time weather data into the risk early warning unit;
the risk early warning unit judges whether the corresponding power distribution network monitoring station is in an extreme weather environment or not through an operator according to the acquired real-time weather data, and if the corresponding power distribution network monitoring station is in the extreme weather environment, the real-time power parameters of the appointed monitoring station are processed in real time through the point position fluctuation analysis unit in a specific mode that:
defining a monitoring period T as a preset value, and marking the power parameters of corresponding stations in the monitoring period T as DLi-k, wherein i represents different monitoring stations, and k represents the power parameters corresponding to different time points;
transmitting the marked groups of power parameters DLi-k into a graph construction unit, otherwise, not starting a point position fluctuation analysis unit;
the pattern construction unit constructs a periodic pattern according to different power parameters corresponding to different time points, and transmits the constructed periodic pattern to the risk analysis unit, and the specific mode is as follows:
receiving the marked power parameters DLi-k, and constructing a two-dimensional coordinate system by taking the time line as a transverse coordinate axis and the power parameters as a vertical coordinate axis;
determining specified power parameters in a constructed two-dimensional coordinate system according to the trend of the k value, connecting the determined power parameters, constructing a periodic pattern, and transmitting the constructed periodic pattern into a risk analysis unit;
the risk analysis unit is used for carrying out risk analysis on the constructed periodic graph, determining a group of standard values in a vertical coordinate axis of a two-dimensional coordinate system, carrying out risk analysis on a specified monitoring site, and judging whether the electric power parameters of the monitoring site need to be changed or not, wherein the specific mode is as follows:
determining a group of standard values in the vertical coordinate axis of the two-dimensional coordinate system, and constructing a dividing line by parallel extension of the standard values, wherein the dividing line is parallel to the transverse coordinate axis of the two-dimensional coordinate system, and the internal curve of the periodic graph is divided, and the standard values are preset values;
acquiring partial line length at the upper end of the dividing line in the periodic graph, and marking the acquired partial line length as an early warning line length;
acquiring partial line length at the lower end of the dividing line in the periodic graph, and marking the acquired partial line length as normal line length;
adopting the early warning line length/normal line length=early warning duty ratio ZBi, comparing the early warning duty ratio ZBi with a preset value Y1, and when ZBi is less than Y1, not performing any processing, otherwise, generating early warning signals, and respectively transmitting the early warning signals into an early warning unit and an adjusting unit;
the adjusting unit adjusts the real-time power parameters of the monitoring station to the standard transmission values according to the received early warning signals;
the main analysis unit confirms the adjusted standard and optimal transmission value, acquires the past parameters of the subsequent stations of the power transmission trend, and judges whether the standard and optimal transmission value can influence the normal operation of the subsequent stations by analyzing the acquired past parameters, if so, the main analysis unit adjusts again in the specific mode that:
according to the determined standard optimal transmission value and the monitoring station, acquiring the past parameters of the next group of stations of the power transmission trend of the monitoring station, wherein the acquired past parameters are the power parameters generated in the previous group of monitoring period T;
extracting a maximum value and a minimum value from the past parameters, and constructing a parameter interval [ X1, X2] of a corresponding site, wherein X1 is the minimum value, and X2 is the maximum value;
performing difference processing on the determined standard and optimal transmission value and the parameter intervals [ X1, X2] to obtain a difference interval [ X3, X4] to be analyzed, and extracting a preset comparison interval from a storage unit;
when the difference value interval [ X3, X4] epsilon to be analyzed is a preset comparison interval, generating a normal signal through the signal generating unit, and transmitting the normal signal into the display unit for external personnel to check;
when the difference interval to be analyzed is [ X3, X4]When the comparison interval is preset, generating an electric power parameter adjustment signal, and performing readjustment processing on the standard transmission value, wherein the specific mode is as follows:
acquiring a constructed periodic graph, recording the floating times in the periodic graph, and marking the floating times as FDi;
comparing FDi with a preset parameter Y2, wherein Y2 is a preset value, generating a parameter adjustment signal when FDi is less than or equal to Y2, transmitting the parameter adjustment signal into an adjustment unit, otherwise, generating an unadjustable signal through a signal generation unit, and transmitting the unadjustable signal into a display unit;
according to the parameter adjustment signal, extracting the maximum value from a plurality of groups of power parameters DLi-k in the periodic graph, and marking the maximum value as DLi-kmax;
and adopting a standard transmission value +DLi-kmax multiplied by C1=adjustment value, wherein C1 is a preset factor, and adjusting the standard transmission value according to the acquired adjustment value to carry out power transportation.
Preferably, the early warning unit performs early warning according to the received early warning signal to inform appointed operators.
Compared with the prior art, the invention has the beneficial effects that: establishing a corresponding dividing line according to a set standard value, wherein the standard value can be understood as a negative pressure maximum value, the part exceeding the negative pressure maximum value is an early warning parameter, the exceeding part is marked as an early warning line length, the early warning line length is compared with a normal line length, an early warning duty ratio is determined, a corresponding standard transmission value is determined according to the determined early warning duty ratio, the power transmission risk is reduced, and early warning is timely carried out;
and then according to the determined standard transmission value, analyzing whether the standard transmission value can influence the normal operation of the subsequent station, if so, adjusting the standard transmission value, if so, adjusting whether the standard transmission value can cause early warning conditions, so that the fluctuation state of the monitoring station is analyzed by analyzing the fluctuation times of the monitoring station, if the fluctuation state is serious, the adjustment processing is not performed, if the fluctuation state is light, the adjustment can be performed, and then the standard transmission value is trimmed and changed according to the maximum value appearing in the periodic pattern, so that the normal operation of the subsequent station is ensured to be greatly influenced, and the management and control effect of the whole risk early warning is improved.
Drawings
Fig. 1 is a schematic diagram of a principle frame of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the application provides a risk early warning system based on a power distribution network running state, which comprises a parameter acquisition unit, a weather center, a risk early warning unit and a display unit;
the parameter acquisition unit and the weather center are electrically connected with the input end of the risk early warning unit, and the risk early warning unit is electrically connected with the input end of the display unit;
the risk early warning unit comprises a point fluctuation analysis unit, a graph construction unit, a risk analysis unit, an early warning unit, a storage unit, a main analysis unit, an adjusting unit and a signal generation unit, wherein the point fluctuation analysis unit is electrically connected with the input end of the graph construction unit, the graph construction unit is electrically connected with the input end of the risk analysis unit, the risk analysis unit is respectively electrically connected with the input ends of the adjusting unit and the early warning unit, the storage unit is electrically connected with the input end of the main analysis unit, the adjusting unit is in bidirectional connection with the main analysis unit, and the main analysis unit is electrically connected with the input end of the signal generation unit;
the parameter acquisition unit is used for acquiring the real-time power parameters of the power distribution network monitoring station and transmitting the acquired real-time power parameters into the risk early warning unit;
the weather center is used for acquiring real-time weather data of the power distribution network monitoring station and transmitting the acquired real-time weather data into the risk early warning unit;
the risk early warning unit judges whether the corresponding power distribution network monitoring station is in an extreme weather environment according to the acquired real-time weather data, the specific judgment mode is selected by an operator, if the power distribution network monitoring station is in the extreme weather environment, the real-time power parameters of the appointed monitoring station are processed in real time through the point position fluctuation analysis unit, otherwise, the point position fluctuation analysis unit is not started, and the specific mode of real-time processing is as follows:
defining a monitoring period T, wherein the T is a preset value, the value of T is generally 4h, the power parameters of corresponding stations in the monitoring period T are marked as DLi-k, i represents different monitoring stations, and k represents the power parameters corresponding to different time points;
the marked sets of power parameters DLi-k are transmitted into a graphics building unit.
And in combination with the analysis of the actual application scene, under the extreme weather environment, the power parameters normally transmitted in the corresponding power distribution network monitoring station can be in a fluctuation state.
The pattern construction unit constructs a periodic pattern according to different power parameters corresponding to different time points, and transmits the constructed periodic pattern to the risk analysis unit, wherein the specific mode for constructing the periodic pattern is as follows:
receiving the marked power parameters DLi-k, and constructing a two-dimensional coordinate system by taking the time line as a transverse coordinate axis and the power parameters as a vertical coordinate axis;
according to the trend of the k value, determining a designated power parameter in the constructed two-dimensional coordinate system, connecting the determined power parameter, constructing a periodic pattern, and transmitting the constructed periodic pattern to a risk analysis unit.
The risk analysis unit is used for carrying out risk analysis on the constructed periodic graph, determining a group of standard values in a vertical coordinate axis of a two-dimensional coordinate system, carrying out risk analysis on a specified monitoring site, and judging whether the electric power parameters of the monitoring site need to be changed or not, wherein the specific mode for carrying out the risk analysis is as follows:
determining a group of standard values in the vertical coordinate axis of the two-dimensional coordinate system, and constructing a dividing line by parallel extension of the standard values, wherein the dividing line is parallel to the transverse coordinate axis of the two-dimensional coordinate system, and the internal curve of the periodic graph is divided, the standard values are preset values, and the specific values are drawn by an operator according to experience;
acquiring partial line length at the upper end of the dividing line in the periodic graph, and marking the acquired partial line length as an early warning line length;
acquiring partial line length at the lower end of the dividing line in the periodic graph, and marking the acquired partial line length as normal line length;
and comparing the early warning duty ratio ZBi with a preset value Y1 by adopting the early warning line length/normal line length=the early warning duty ratio ZBi, wherein the specific value of the preset value Y1 is empirically drawn by an operator, and when ZBi is smaller than Y1, no processing is performed, otherwise, an early warning signal is generated, and the early warning signal is respectively transmitted into the early warning unit and the adjusting unit.
And combining with actual application scene analysis, establishing a corresponding dividing line according to a set standard value, wherein the standard value can be understood as a negative pressure maximum value, and the part exceeding the negative pressure maximum value is an early warning parameter, marking the exceeding part line length as an early warning line length, comparing the early warning line length with a normal line length, and determining the early warning duty ratio.
The early warning unit performs early warning according to the received early warning signal, informs appointed operators that the fluctuation of the real-time power parameter of the early warning station is abnormal, and simultaneously monitors the early warning station in real time to avoid accidents.
The adjusting unit adjusts the real-time power parameters of the monitoring station to the standard optimal transmission values according to the received early warning signals, reduces the power transmission pressure of the corresponding monitoring station, wherein the standard optimal transmission values are preset values, and the specific values are drawn by operators according to experience;
the main analysis unit confirms the adjusted standard and optimal transmission value, acquires the past parameters of the subsequent stations of the power transmission trend, and judges whether the standard and optimal transmission value can influence the normal operation of the subsequent stations by analyzing the acquired past parameters, if so, the main analysis unit adjusts again, wherein the specific mode of analyzing is as follows:
according to the determined standard optimal transmission value and the monitoring station, acquiring the past parameters of the next group of stations of the power transmission trend of the monitoring station, wherein the acquired past parameters are the power parameters generated in the previous group of monitoring period T;
extracting a maximum value and a minimum value from the past parameters, and constructing a parameter interval [ X1, X2] of a corresponding site, wherein X1 is the minimum value, and X2 is the maximum value;
performing difference processing on the determined standard optimal transmission value and the parameter intervals [ X1, X2] to obtain a difference interval [ X3, X4] to be analyzed, and extracting a preset comparison interval from a storage unit, wherein the two end values of the preset comparison interval are preset values, and the specific values are drawn by an operator according to experience;
when the difference value interval [ X3, X4] epsilon to be analyzed is a preset comparison interval, generating a normal signal through the signal generating unit, and transmitting the normal signal into the display unit for external personnel to check;
when the difference interval to be analyzed is [ X3, X4]When the comparison interval is preset, generating an electric power parameter adjustment signal, and performing readjustment processing on the standard transmission value, wherein the specific mode for performing readjustment processing is as follows:
obtaining a constructed periodic graph, recording the floating times in the periodic graph, marking the floating times as FDi, and increasing the floating times once when the floating trend in the periodic graph is changed once;
comparing FDi with a preset parameter Y2, wherein Y2 is a preset value, the specific value of the FDi is determined by an operator according to experience, when FDi is less than or equal to Y2, a parameter adjustment signal is generated and transmitted to an adjustment unit, otherwise, a signal which cannot be adjusted is generated through a signal generation unit and transmitted to a display unit for the self operation of an external operator;
according to the parameter adjustment signal, extracting the maximum value from a plurality of groups of power parameters DLi-k in the periodic graph, and marking the maximum value as DLi-kmax;
and adopting a standard transmission value +DLi-kmax multiplied by C1=adjustment value, wherein C1 is a preset factor, the specific value is drawn by an operator according to experience, and the standard transmission value is adjusted according to the acquired adjustment value, changed into the adjustment value and used for electric power transportation.
According to the determined standard good transmission value, analyzing whether the standard good transmission value affects the normal operation of the subsequent station or not according to the actual application scene analysis, if so, adjusting the standard good transmission value, and if so, also causing an early warning condition, so, analyzing the fluctuation state of the monitoring station by analyzing the fluctuation times of the monitoring station, if the fluctuation state is serious, not adjusting, if the fluctuation state is light, adjusting, and then finishing and changing the standard good transmission value according to the maximum value in the periodic pattern to ensure that the normal operation of the subsequent station is greatly affected and promote the management and control effect of the whole risk early warning;
the partial data in the formula are all obtained by removing dimension and taking the numerical value for calculation, and the formula is a formula closest to the real situation obtained by simulating a large amount of collected data through software; the preset parameters and the preset threshold values in the formula are set by those skilled in the art according to actual conditions or are obtained through mass data simulation.
The working principle of the invention is as follows: establishing a corresponding dividing line according to a set standard value, wherein the standard value can be understood as a negative pressure maximum value, the part exceeding the negative pressure maximum value is an early warning parameter, the exceeding part is marked as an early warning line length, the early warning line length is compared with a normal line length, an early warning duty ratio is determined, a corresponding standard transmission value is determined according to the determined early warning duty ratio, the power transmission risk is reduced, and early warning is timely carried out;
and then according to the determined standard transmission value, analyzing whether the standard transmission value can influence the normal operation of the subsequent station, if so, adjusting the standard transmission value, if so, adjusting whether the standard transmission value can cause early warning conditions, so that the fluctuation state of the monitoring station is analyzed by analyzing the fluctuation times of the monitoring station, if the fluctuation state is serious, the adjustment processing is not performed, if the fluctuation state is light, the adjustment can be performed, and then the standard transmission value is trimmed and changed according to the maximum value appearing in the periodic pattern, so that the normal operation of the subsequent station is ensured to be greatly influenced, and the management and control effect of the whole risk early warning is improved.
The above embodiments are only for illustrating the technical method of the present invention and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present invention may be modified or substituted without departing from the spirit and scope of the technical method of the present invention.
Claims (7)
1. The risk early warning system based on the running state of the power distribution network is characterized by comprising a parameter acquisition unit, a weather center, a risk early warning unit and a display unit;
the risk early warning unit comprises a point fluctuation analysis unit, a graph construction unit, a risk analysis unit, an early warning unit, a storage unit, a main analysis unit, an adjustment unit and a signal generation unit;
the parameter acquisition unit is used for acquiring the real-time power parameters of the power distribution network monitoring station and transmitting the acquired real-time power parameters into the risk early warning unit;
the weather center is used for acquiring real-time weather data of the power distribution network monitoring station and transmitting the acquired real-time weather data into the risk early warning unit;
the risk early warning unit judges whether the corresponding power distribution network monitoring station is in an extreme weather environment or not through an operator according to the acquired real-time weather data, if the power distribution network monitoring station is in the extreme weather environment, the real-time power parameters of the appointed monitoring station are processed in real time through the point position fluctuation analysis unit, and otherwise, the point position fluctuation analysis unit is not started;
the pattern construction unit constructs a periodic pattern according to different power parameters corresponding to different time points, and transmits the constructed periodic pattern to the risk analysis unit;
the risk analysis unit is used for performing risk analysis on the constructed periodic graph, determining a group of standard values in a vertical coordinate axis of a two-dimensional coordinate system, performing risk analysis on a specified monitoring site, and judging whether the electric power parameters of the monitoring site need to be changed or not;
the adjusting unit adjusts the real-time power parameters of the monitoring station to the standard transmission values according to the received early warning signals;
and the main analysis unit confirms the adjusted standard good transmission value, acquires the past parameters of the subsequent stations in the power transmission trend, and judges whether the standard good transmission value can influence the normal operation of the subsequent stations by analyzing the acquired past parameters, and if so, the main analysis unit adjusts again.
2. The power distribution network operation state risk early warning system according to claim 1, wherein the specific mode of the point location fluctuation analysis unit for real-time processing of the real-time power parameters of the designated monitoring station is as follows:
limiting a monitoring period T to be a preset value, and marking the power parameter of the corresponding station in the monitoring period T as DL i-k Wherein i represents different monitoring stations, and k represents power parameters corresponding to different time points;
several sets of power parameters DL after marking i-k To the graphic construction unit.
3. The power distribution network operation state risk early warning system according to claim 2, wherein the pattern construction unit constructs the periodic pattern in the following specific manner:
for the marked power parameter DL i-k Receiving, namely constructing a two-dimensional coordinate system by taking a time line as a transverse coordinate axis and taking electric power parameters as a vertical coordinate axis;
according to the trend of the k value, determining a designated power parameter in the constructed two-dimensional coordinate system, connecting the determined power parameter, constructing a periodic pattern, and transmitting the constructed periodic pattern to a risk analysis unit.
4. The risk early warning system based on the operation state of the power distribution network according to claim 3, wherein the specific manner of performing risk analysis on the designated monitoring site by the risk analysis unit is as follows:
determining a group of standard values in the vertical coordinate axis of the two-dimensional coordinate system, and constructing a dividing line by parallel extension of the standard values, wherein the dividing line is parallel to the transverse coordinate axis of the two-dimensional coordinate system, and the internal curve of the periodic graph is divided, and the standard values are preset values;
acquiring partial line length at the upper end of the dividing line in the periodic graph, and marking the acquired partial line length as an early warning line length;
acquiring partial line length at the lower end of the dividing line in the periodic graph, and marking the acquired partial line length as normal line length;
adopt the early warning line length/normal line length = early warning duty ratio ZB i The early warning duty ratio ZB i Comparing with a preset value Y1, and when ZB i And when the temperature is less than Y1, no processing is performed, otherwise, an early warning signal is generated and is respectively transmitted into the early warning unit and the adjusting unit.
5. The power distribution network operation state risk early warning system according to claim 4, wherein the early warning unit performs early warning according to the received early warning signal to inform a designated operator.
6. The power distribution network operation state risk early warning system according to claim 4, wherein the specific manner in which the main analysis unit determines whether the standard transmission value will affect the normal operation of the subsequent station is as follows:
according to the determined standard optimal transmission value and the monitoring station, acquiring the past parameters of the next group of stations of the power transmission trend of the monitoring station, wherein the acquired past parameters are the power parameters generated in the previous group of monitoring period T;
extracting a maximum value and a minimum value from the past parameters, and constructing a parameter interval [ X1, X2] of a corresponding site, wherein X1 is the minimum value, and X2 is the maximum value;
performing difference processing on the determined standard-good transmission value and the parameter intervals [ X1, X2] to obtain a difference interval [ X3, X4] to be analyzed, and extracting a preset comparison interval from the storage unit, wherein two end values of the preset comparison interval are preset values;
when the difference value interval [ X3, X4] epsilon to be analyzed is a preset comparison interval, generating a normal signal through the signal generating unit, and transmitting the normal signal into the display unit for external personnel to check;
when the difference value interval to be analyzedWhen the comparison interval is preset, generating a power parameter adjustment signal, and performing readjustment processing on the standard transmission value.
7. The power distribution network operation state risk early warning system according to claim 6, wherein the specific manner of performing readjustment processing on the standard transmission value is as follows:
acquiring the constructed periodic pattern, recording the floating times in the periodic pattern, and marking the floating times as FD i In the periodic graph, the floating trend is changed once, and the floating times are increased once;
FD will be i Comparing with a preset parameter Y2, wherein Y2 is a preset value, when FD i When Y2 is not more than, generating a parameter adjustment signal, transmitting the parameter adjustment signal into the adjustment unit, otherwise, generating an unadjustable signal through the signal generation unit, and transmitting the unadjustable signal into the display unit;
adjusting the signal according to the parameters and from several groups of power parameters DL within the periodic pattern i-k Extract the maximum and mark it as DL i-kmax ；
And adopting a standard transmission value +DLi-kmax multiplied by C1=adjustment value, wherein C1 is a preset factor, adjusting the standard transmission value according to the acquired adjustment value, changing the adjustment value into the adjustment value, and carrying out power transportation.
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| CN202310580800.4A CN116545119A (en) | 2023-05-23 | 2023-05-23 | Power distribution network running state risk early warning system |
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| CN202310580800.4A CN116545119A (en) | 2023-05-23 | 2023-05-23 | Power distribution network running state risk early warning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118054569A (en) * | 2024-04-16 | 2024-05-17 | 国网黑龙江省电力有限公司齐齐哈尔供电公司 | Intelligent monitoring control system for operation of power distribution network |
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2023
- 2023-05-23 CN CN202310580800.4A patent/CN116545119A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118054569A (en) * | 2024-04-16 | 2024-05-17 | 国网黑龙江省电力有限公司齐齐哈尔供电公司 | Intelligent monitoring control system for operation of power distribution network |
| CN118054569B (en) * | 2024-04-16 | 2024-06-28 | 国网黑龙江省电力有限公司齐齐哈尔供电公司 | Intelligent monitoring control system for operation of power distribution network |
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