CN116345687A - User behavior safety early warning system of power monitoring system - Google Patents
User behavior safety early warning system of power monitoring system Download PDFInfo
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- CN116345687A CN116345687A CN202310252953.6A CN202310252953A CN116345687A CN 116345687 A CN116345687 A CN 116345687A CN 202310252953 A CN202310252953 A CN 202310252953A CN 116345687 A CN116345687 A CN 116345687A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a user behavior safety early warning system of an electric power monitoring system, which belongs to the technical field of intelligent power grids, and is characterized in that the relation between actual load power and predicted load power in each branch circuit is analyzed, the average load fluctuation level of each branch circuit in different time periods is obtained, and is used as a judgment standard, when abnormal fluctuation exists in the corresponding branch circuit, alarm prompt is timely carried out, a worker is reminded to carry out maintenance work of the corresponding branch circuit, so that expansion of faults and expansion of losses are avoided, a good early warning effect is achieved, the importance of historical fault records and the load power fluctuation expression of powered-on electric equipment in one past inspection period of each branch circuit are considered, the fault occurrence point is timely found in the overhaul process, fault elimination is carried out, the fault time of a power grid is reduced, and the loss caused by the power grid fault is reduced.
Description
Technical Field
The invention belongs to the technical field of smart grids, and particularly relates to a user behavior safety early warning system of an electric power monitoring system.
Background
The power monitoring system uses a computer, communication equipment and a measurement and control unit as basic tools, is used for monitoring and controlling a power production and supply process, is based on a system and intelligent equipment of a computer and network technology, is used as a communication and data network of a basic support, and the like, and makes great contribution to the maintenance and stability of the power system.
The electric power safety is closely related to production and management and daily life, so that the stability of the electric power system is ensured, faults of the electric power system are maintained in time, and economic loss and potential safety hazards caused by the faults are reduced. In the prior art, when the power grid is monitored through the power monitoring system, the real-time monitoring and the real-time analysis are mainly used, and a large development space is provided in the aspect of early warning.
Disclosure of Invention
The invention aims to provide a user behavior safety early warning system of a power monitoring system, which solves the problems that in the prior art, power failure early warning is not timely and loss caused by power failure is not reduced.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a safe early warning system of electric power monitored control system user action, includes:
the power-on identification unit is used for identifying whether the electric equipment connected to the circuit is in a power-on state, and when the electric equipment is powered on, the power-on identification unit transmits a power-on signal of the corresponding electric equipment to the load identification unit and the control center;
the load identification unit is used for transmitting the use power Pr of the corresponding electric equipment to the control center after receiving the power-on signal sent by the power-on identification unit;
the load identification unit is also used for storing the designed maximum load power Psi of each branch circuit;
wherein i is more than or equal to 1 and less than or equal to n, and n is the number of branch lines;
the signal acquisition unit is used for monitoring the real-time load power Pei of each branch circuit by a user;
the control center acquires an abnormal fluctuation value G of each branch circuit in each inspection period;
the method for acquiring the abnormal fluctuation value G of each branch circuit in each inspection period by the control center comprises the following steps:
s1, marking each branch circuit as D1, D2, … and Dn in sequence;
the powered equipment on the branch circuit Di is identified by a powered identification unit;
acquiring the sum Prz of the using powers Pr of the powered equipment in the branch circuit Di;
dividing the time of day into m test periods, and marking the m test periods as Z1, Z2, … and Zm in sequence;
for the branch circuit Di, a rectangular coordinate system is established, time is taken as an abscissa, power is taken as an ordinate, a curve of the sum Prz of the using powers Pr of the powered equipment on the branch circuit Di, which changes along with time, is established, and the curve is marked as a curve I;
establishing a curve of the real-time load power Pei of the branch circuit Di changing along with time, and marking the curve as a curve II;
s2, acquiring the area M1 of a non-coincident part of a curve I and a curve II in a test period Zj, wherein j is more than or equal to 1 and less than or equal to M;
in one inspection period Zj, an area M2 of a closed figure region consisting of a curve one, an abscissa, x=t1, and x=t2 is acquired;
t1 is the starting time of the corresponding test period, and t2 is the ending time of the corresponding test period;
calculating according to a formula gamma=m1/M2 to obtain a fluctuation coefficient gamma of the corresponding branch circuit Di in a corresponding test period Zj;
calculating and obtaining a plurality of fluctuation coefficient gamma values corresponding to the branch circuit Di in a plurality of continuous test periods Zj, and then calculating the average value of the fluctuation coefficient gamma values to obtain an average fluctuation coefficient gamma 1 of the branch circuit Di in the test period Zj;
s3, for the branch circuit Di, when one test period is finished, obtaining k moments in the test period by equal time difference, and obtaining Prz values corresponding to the k moments on a curve I and Pei values corresponding to a curve II;
k real-time fluctuation values lambda are calculated according to the formula lambda= | Prz-pei|/Prz;
counting the number k1 of moments meeting that the real-time fluctuation value lambda is larger than the corresponding average fluctuation coefficient gamma 1 in the corresponding test period;
s4, sequentially marking real-time fluctuation values lambda meeting the condition that the real-time fluctuation values lambda are larger than k1 moments of the corresponding average fluctuation coefficient gamma 1 in the corresponding test period as lambda 1, lambda 2, … and lambda k1;
according to the formula g=b (1+k1/k) Calculating to obtain an abnormal fluctuation value G of the corresponding branch circuit Di in a corresponding test period;
wherein b= (|λ1- γ1|+|λ2- γ2|++, …, |λk1- γ1|)/k 1;
s5, when the abnormal fluctuation value G more than or equal to G1 of one branch circuit in one past test period is detected, judging that the corresponding branch circuit Di is abnormal, wherein G1 is a preset value.
As a further scheme of the invention, the early warning system also comprises an alarm unit which is used for sending out an alarm signal to prompt a worker to timely repair and maintain the corresponding branch circuit.
As a further aspect of the present invention, the control center is configured to control the power grid according to the formula u= (g+α 1*h) when a power grid fault occurs α2*μ1+α3*μp Calculating to obtain a maintenance priority value U corresponding to each branch circuit;
wherein α1, α2 and α3 are preset coefficients;
wherein mu 1 is the importance coefficient of the electric equipment with the largest importance coefficient mu in the electric equipment electrified when the fault occurs in the corresponding branch circuit;
μp is the average value of importance coefficients μ of powered devices powered on when faults occur in corresponding branch circuits;
h is the number of times that the corresponding branch circuit is determined to have an abnormality in the past T2 time, wherein T2 is a preset value;
g is an abnormal fluctuation value calculated by the corresponding branch circuit in the nearest complete test period;
the importance coefficient mu of the electric equipment is a value preset according to the working property of each electric equipment;
and overhauling each branch circuit according to the order of the overhauling priority value U from the large to the small.
The invention has the beneficial effects that:
1. according to the invention, the maintenance priority value U of each branch circuit can be calculated in a past period to arrange the maintenance sequence of each branch circuit, so that factors such as historical fault records, importance of powered equipment and load power fluctuation performance of each branch circuit in a past test period are considered, timely fault occurrence points can be found and fault elimination can be carried out in the maintenance process, the power grid fault time is reduced, and the loss caused by power grid faults is reduced.
2. According to the invention, through analyzing the relation between the actual load power and the predicted load power in each branch circuit, the average load fluctuation level of each branch circuit in different time periods is obtained, and is used as a judgment standard, when abnormal fluctuation exists in the corresponding branch circuit, alarm prompt is timely carried out, and workers are reminded to carry out maintenance work of the corresponding branch circuit, so that the expansion of faults and the expansion of losses are avoided, and a good early warning effect is achieved.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a framework structure of a user behavior safety precaution system of the power monitoring system of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but 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.
The utility model provides a safe early warning system of electric power monitored control system user action, includes:
the power-on identification unit is used for identifying whether the electric equipment connected to the circuit is in a power-on state or not, and when the electric equipment is powered on, the power-on identification unit transmits a power-on signal of the corresponding electric equipment to the load identification unit and the control center;
the load identification unit is used for storing the power utilization information of each electric equipment on the corresponding line, and transmitting the power utilization information of the corresponding electric equipment to the control center after receiving the power-on signal sent by the power-on identification unit;
the electricity consumption of the electric equipment comprises the use power Pr of the electric equipment;
the load identification unit is also used for storing the designed maximum load power Psi of each branch circuit;
wherein i is more than or equal to 1 and less than or equal to n, and n is the number of branch lines;
the signal acquisition unit is used for monitoring the real-time load power Pei of each branch circuit by a user and transmitting the real-time load power Pei to the control center;
the control center is used for analyzing and processing the information uploaded by the load identification unit and the signal acquisition unit so as to obtain an abnormal fluctuation value of each branch circuit in each inspection period and an overhaul priority value U corresponding to each branch circuit when the power grid fails;
the alarm unit is used for sending an alarm signal and reminding corresponding staff to check and maintain the branch circuit with abnormality;
the method for calculating the abnormal fluctuation value G of each branch circuit in each inspection period by the control center comprises the following steps:
s1, marking each branch circuit as D1, D2, … and Dn in sequence;
the powered equipment on the branch circuit Di is identified by a powered identification unit;
acquiring the sum Prz of the using powers Pr of the powered equipment in the branch circuit Di;
dividing the time of day into m test periods, and marking the m test periods as Z1, Z2, … and Zm in sequence;
for the branch circuit Di, a rectangular coordinate system is established, time is taken as an abscissa, power is taken as an ordinate, a curve of the sum Prz of the using powers Pr of the powered equipment on the branch circuit Di, which changes along with time, is established, and the curve is marked as a curve I;
establishing a curve of the real-time load power Pei of the branch circuit Di changing along with time, and marking the curve as a curve II;
s2, acquiring the area M1 of a non-coincident part of a curve I and a curve II in a test period Zj, wherein j is more than or equal to 1 and less than or equal to M;
in one inspection period Zj, an area M2 of a closed figure region consisting of a curve one, an abscissa, x=t1, and x=t2 is acquired;
wherein t1 is the starting time of the corresponding test period, and t2 is the ending time of the corresponding test period;
calculating according to a formula gamma=m1/M2 to obtain a fluctuation coefficient gamma of the corresponding branch circuit Di in a corresponding test period Zj;
calculating and obtaining a plurality of fluctuation coefficient gamma values corresponding to the branch circuit Di in a plurality of continuous test periods Zj, and then calculating the average value of the fluctuation coefficient gamma values to obtain an average fluctuation coefficient gamma 1 of the branch circuit Di in the test period Zj;
s3, for the branch circuit Di, when one test period is finished, obtaining k moments in the test period by equal time difference, and obtaining Prz values corresponding to the k moments on a curve I and Pei values corresponding to a curve II;
k real-time fluctuation values lambda are calculated according to the formula lambda= | Prz-pei|/Prz;
counting the number k1 of moments meeting that the real-time fluctuation value lambda is larger than the corresponding average fluctuation coefficient gamma 1 in the corresponding test period;
s4, sequentially marking real-time fluctuation values lambda meeting the condition that the real-time fluctuation values lambda are larger than k1 moments of the corresponding average fluctuation coefficient gamma 1 in the corresponding test period as lambda 1, lambda 2, … and lambda k1;
according to the formula g=b (1+k1/k) The corresponding branch circuit Di is calculated and detectedAbnormal fluctuation value G in test period;
wherein b= (|λ1- γ1|+|λ2- γ2|++, …, |λk1- γ1|)/k 1;
s5, when an abnormal fluctuation value G of one branch circuit in a past inspection period is detected to be more than or equal to G1, judging that the corresponding branch circuit Di is abnormal, sending alarm information by an alarm unit to prompt a worker to overhaul and maintain the branch circuit Di in time, realizing the prevention effect, avoiding further expansion of circuit faults and reducing the loss of production and life caused by power grid faults;
wherein G1 is a preset value;
in the steps, the relation between the actual load power and the predicted load power in each branch circuit is analyzed to obtain the load fluctuation level of each branch circuit in different time periods, and the load fluctuation level is used as a judgment standard, and when abnormal fluctuation exists in the corresponding branch circuit, alarm prompt is timely carried out to avoid the expansion of faults and the expansion of losses, so that a good early warning effect is achieved, and the abnormal fluctuation comprises the fluctuation of an out-of-range and the duration of the fluctuation of the out-of-range;
in case of grid faults, according to the formula u= (g+α 1*h) α2*μ1+α3*μp Calculating to obtain a maintenance priority value U corresponding to each branch circuit;
wherein α1, α2 and α3 are preset coefficients;
wherein mu 1 is the importance coefficient of the electric equipment with the largest importance coefficient mu in the electric equipment electrified when the fault occurs in the corresponding branch circuit;
μp is the average value of importance coefficients μ of powered devices powered on when faults occur in corresponding branch circuits;
h is the number of times that the corresponding branch circuit is determined to have an abnormality in the past T2 time, wherein T2 is a preset value;
g is an abnormal fluctuation value calculated by the corresponding branch circuit in the nearest complete test period;
the importance coefficient mu of the electric equipment is a value preset according to the working property of each electric equipment;
and (3) carrying out overhaul of each branch circuit according to the order of the overhaul priority value U from large to small, namely preferentially overhauling the branch circuit with the large overhaul priority value under the condition of limited human hands.
According to the method, the overhaul priority value U of each branch circuit can be calculated in a past period to arrange the overhaul sequence of each branch circuit, so that the historical fault record, the importance of powered equipment and the load power fluctuation performance of each branch circuit in a past inspection period are considered, the fault occurrence point can be found timely, the power grid fault time is reduced, and the economic loss caused by the power grid fault is reduced;
in the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (3)
1. The utility model provides a power monitoring system user behavior safety precaution system which characterized in that includes:
the power-on identification unit is used for identifying whether the electric equipment connected to the circuit is in a power-on state, and when the electric equipment is powered on, the power-on identification unit transmits a power-on signal of the corresponding electric equipment to the load identification unit and the control center;
the load identification unit is used for transmitting the use power Pr of the corresponding electric equipment to the control center after receiving the power-on signal sent by the power-on identification unit;
the load identification unit is also used for storing the designed maximum load power Psi of each branch circuit;
wherein i is more than or equal to 1 and less than or equal to n, and n is the number of branch lines;
the signal acquisition unit is used for monitoring the real-time load power Pei of each branch circuit by a user;
the control center acquires an abnormal fluctuation value G of each branch circuit in each inspection period;
the method for acquiring the abnormal fluctuation value G of each branch circuit in each inspection period by the control center comprises the following steps:
s1, marking each branch circuit as D1, D2, … and Dn in sequence;
the powered equipment on the branch circuit Di is identified by a powered identification unit;
acquiring the sum Prz of the using powers Pr of the powered equipment in the branch circuit Di;
dividing the time of day into m test periods, and marking the m test periods as Z1, Z2, … and Zm in sequence;
for the branch circuit Di, a rectangular coordinate system is established, time is taken as an abscissa, power is taken as an ordinate, a curve of the sum Prz of the using powers Pr of the powered equipment on the branch circuit Di, which changes along with time, is established, and the curve is marked as a curve I;
establishing a curve of the real-time load power Pei of the branch circuit Di changing along with time, and marking the curve as a curve II;
s2, acquiring the area M1 of a non-coincident part of a curve I and a curve II in a test period Zj, wherein j is more than or equal to 1 and less than or equal to M;
in one inspection period Zj, an area M2 of a closed figure region consisting of a curve one, an abscissa, x=t1, and x=t2 is acquired;
t1 is the starting time of the corresponding test period, and t2 is the ending time of the corresponding test period;
calculating according to a formula gamma=m1/M2 to obtain a fluctuation coefficient gamma of the corresponding branch circuit Di in a corresponding test period Zj;
calculating and obtaining a plurality of fluctuation coefficient gamma values corresponding to the branch circuit Di in a plurality of continuous test periods Zj, and then calculating the average value of the fluctuation coefficient gamma values to obtain an average fluctuation coefficient gamma 1 of the branch circuit Di in the test period Zj;
s3, for the branch circuit Di, when one test period is finished, obtaining k moments in the test period by equal time difference, and obtaining Prz values corresponding to the k moments on a curve I and Pei values corresponding to a curve II;
k real-time fluctuation values lambda are calculated according to the formula lambda= | Prz-pei|/Prz;
counting the number k1 of moments meeting that the real-time fluctuation value lambda is larger than the corresponding average fluctuation coefficient gamma 1 in the corresponding test period;
s4, sequentially marking real-time fluctuation values lambda meeting the condition that the real-time fluctuation values lambda are larger than k1 moments of the corresponding average fluctuation coefficient gamma 1 in the corresponding test period as lambda 1, lambda 2, … and lambda k1;
according to the formula g=b (1+k1/k) Calculating to obtain an abnormal fluctuation value G of the corresponding branch circuit Di in a corresponding test period;
wherein b= (|λ1- γ1|+|λ2- γ2|++, …, |λk1- γ1|)/k 1;
s5, when the abnormal fluctuation value G more than or equal to G1 of one branch circuit in one past test period is detected, judging that the corresponding branch circuit Di is abnormal, wherein G1 is a preset value.
2. The system of claim 1, further comprising an alarm unit for sending an alarm signal to prompt a worker to repair and maintain the corresponding branch circuit in time.
3. The system of claim 1, wherein the control center is configured to determine if a grid fault occurs according to the formula u= (g+α 1*h α2*μ1+α3*μp Calculating to obtain a maintenance priority value U corresponding to each branch circuit;
wherein α1, α2 and α3 are preset coefficients;
wherein mu 1 is the importance coefficient of the electric equipment with the largest importance coefficient mu in the electric equipment electrified when the fault occurs in the corresponding branch circuit;
μp is the average value of importance coefficients μ of powered devices powered on when faults occur in corresponding branch circuits;
h is the number of times that the corresponding branch circuit is determined to have an abnormality in the past T2 time, wherein T2 is a preset value;
g is an abnormal fluctuation value calculated by the corresponding branch circuit in the nearest complete test period;
the importance coefficient mu of the electric equipment is a value preset according to the working property of each electric equipment;
and overhauling each branch circuit according to the order of the overhauling priority value U from the large to the small.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310252953.6A CN116345687A (en) | 2023-03-16 | 2023-03-16 | User behavior safety early warning system of power monitoring system |
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| CN202310252953.6A CN116345687A (en) | 2023-03-16 | 2023-03-16 | User behavior safety early warning system of power monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116865205A (en) * | 2023-09-05 | 2023-10-10 | 温州宝翔科技有限公司 | Wireless breaker fault early warning method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116865205A (en) * | 2023-09-05 | 2023-10-10 | 温州宝翔科技有限公司 | Wireless breaker fault early warning method and system |
| CN116865205B (en) * | 2023-09-05 | 2023-11-24 | 温州宝翔科技有限公司 | Wireless breaker fault early warning method and system |
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