CN111681483B - Simulation transformer district line loss data simulation method, training method, device and medium - Google Patents
Simulation transformer district line loss data simulation method, training method, device and medium Download PDFInfo
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- CN111681483B CN111681483B CN202010519110.4A CN202010519110A CN111681483B CN 111681483 B CN111681483 B CN 111681483B CN 202010519110 A CN202010519110 A CN 202010519110A CN 111681483 B CN111681483 B CN 111681483B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
Abstract
The invention provides a simulation method, a training method, equipment and a medium for simulating line loss data of a transformer area, wherein the simulation method comprises the following steps: the teacher end obtains the total power P of the current simulation platform area according to the initial power Pn of each user; the teacher end obtains first electric power of a simulation summary table of the current simulation platform area based on the total power utilization power P and the theoretical line loss rate Y; a teacher end reads first electric power of a simulation summary table of a current simulation platform area, generates a virtual load power supply instruction I and sends the virtual load power supply instruction I to the simulation summary table so as to drive the simulation summary table to be electrified and operated; and the teacher end reads the initial power Pn of each user in the current simulation platform area, generates a virtual load power supply instruction II and transmits the virtual load power supply instruction II to the corresponding simulation user table so as to drive the simulation user table to work electrically. The invention solves the problem that the electricity consumption of a simulation user is inconvenient to adjust because a certain real load is adopted in the traditional power utilization simulation method for the transformer area.
Description
Technical Field
The invention relates to the field of power system simulation training, in particular to a simulation method, a training method, equipment and a medium for simulating line loss data of a transformer area.
Background
Under the promotion of the rapid development of market economy in China, the electric power market is also greatly developed, the line loss rate is always an important economic and technical index of a power supply enterprise, and the improvement of the line loss rate is equal to the improvement of the economic benefit of the enterprise on the premise of no change of production cost, so that the power supply company has line loss management as the important factor in enterprise operation. The line loss of the low-voltage transformer area is a management difficulty of each power grid enterprise due to multiple points, and the line loss needs to be reduced through various management and technical means, so that the purpose of improving the economic benefit is achieved.
The electricity consumption information acquisition system can acquire the electric quantity of a concentrator (general meter) and a collector (branch meter) in real time, and timely and accurately calculates the real-time line loss through data sharing with a line loss management module in the SG186 marketing system, so that the timeliness and the accuracy of line loss calculation are ensured, the manual and complicated line loss statistical analysis work is thoroughly liberated, and great convenience is provided for correct statistics, scientific analysis and targeted taking and regulating measures of the line loss.
How to fully exert the effect of power consumption information acquisition system in the line loss management work, how to improve the technical level of practitioner analysis, investigation, processing line loss problem, how to carry out effectual examination to practitioner's management level becomes the difficult problem that power supply enterprise needs to solve at a glance in line loss management work.
Based on the factors and the premises, an electric power system power utilization simulation scene is set up in a laboratory, a line loss analysis simulation system is designed, various phenomena and means of line loss problems of the electric power system are mainly reduced, and the functions of line loss analysis, management and elimination of skill training and test and examination are realized by relying on the data acquisition and analysis function and the line loss analysis data statistical mode of the power utilization information acquisition system, so that the technical level of analyzing, troubleshooting and processing the line loss problems of practitioners is improved.
The traditional power utilization platform area simulation method is characterized in that a user load adopts a certain real load or a certain resistive load, the power utilization parameter of the power utilization platform area is a fixed value, the power utilization parameter is inconvenient to adjust, the power utilization load of a user cannot be set and changed at will, the line loss rate of a simulation platform area cannot be preset and changed, the analysis level of line loss of a student is not improved, and the management level of the student cannot be comprehensively checked.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a simulation method, a training method, equipment and a medium for simulating the line loss data of a simulation platform area.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a simulation platform area line loss data simulation method for a teacher end, which comprises the following steps:
the teacher configures the theoretical line loss rate of the current simulation transformer area as a theoretical line loss rate Y, configures the power consumption of each user during normal operation of the current simulation transformer area as an initial power consumption Pn, and configures the management line loss of the current simulation transformer area as a management line loss A;
the teacher end obtains the total power P of the current simulation platform area according to the initial power Pn of each user;
the teacher end obtains first electric power of a simulation summary table of the current simulation platform area based on the total power utilization power P and the theoretical line loss rate Y;
a teacher end reads first electric power of a simulation summary table of a current simulation platform area, generates a virtual load power supply instruction I and sends the virtual load power supply instruction I to the simulation summary table so as to drive the simulation summary table to be electrified and operated;
and the teacher end reads the initial power Pn of each user in the current simulation platform area, generates a virtual load power supply instruction II and transmits the virtual load power supply instruction II to the corresponding simulation user table so as to drive the simulation user table to work electrically.
The invention provides a training method for a student end for simulating the line loss analysis of a transformer area, which is used for simulating the electricity utilization condition of the simulation transformer area by the simulation transformer area line loss data simulation method;
the student side reads newly-added forward active electric energy freezing data I of a simulation general table in a current simulation station area and newly-added forward active electric energy freezing data II of each simulation user table;
the student side calculates the actual line loss rate II of the current simulation station area according to the newly added forward active electric energy freezing data I and the newly added forward active electric energy freezing data II;
the student side acquires a theoretical line loss rate Y configured by the teacher side;
the student side obtains the management line loss rate of the current simulation transformer area through the theoretical line loss rate Y and the actual line loss rate of the current simulation transformer area;
the student end reads the management line loss A of the current simulation transformer area configured by the teacher end, and judges whether the current simulation transformer area has line loss faults or not by combining the calculated management line loss rate of the current simulation transformer area;
and the student side also judges whether the current simulation transformer area works in a normal state or not according to the management line loss rate of the new current simulation transformer area calculated after the line loss fault of the current simulation transformer area is eliminated.
The invention provides a simulation transformer area line loss simulation training device which comprises a student end, a teacher end, a first signal generator, a simulation summary table, at least one simulation user table, a second signal generator and a line loss fault simulation circuit, wherein the student end is provided with a power acquisition simulation system;
the teacher end is in communication connection with the first signal generator and the second signal generator through a switch and a communication repeater; the first signal generator is in communication connection with the simulation summary table; the second signal generator is in communication connection with the simulation user meter through a line loss fault simulation circuit; the line loss fault simulation circuit is also in communication connection with the communication repeater;
the student end is respectively in communication connection with the simulation summary table and each simulation user table through the simulation concentrator;
the teacher end executes the simulation method for simulating the line loss data of the transformer area, and the student end executes the training method for analyzing the line loss of the transformer area.
The fourth aspect of the present invention also provides a readable storage medium, on which instructions are stored, and when the instructions are executed by a processor, the steps of the simulation method for simulating the platform area line loss data as described above are implemented.
The fifth aspect of the present invention is also a readable storage medium, on which instructions are stored, which instructions, when executed by a processor, implement the steps of the training method for simulating line loss analysis of a transformer area as described above.
Compared with the prior art, the invention has prominent substantive characteristics and remarkable progress, particularly:
1) the invention provides a simulation platform district line loss data simulation method and a training method.A teacher end controls the virtual load power supply instruction output of a simulation general table in a current simulation platform district according to the obtained total power consumption power of the simulation general table in the current simulation platform district, and also controls the virtual load power supply instruction output of a simulation user table in the current simulation platform district according to the configured initial power consumption Pn of each user, thereby realizing the simulation of the simulation platform district meter line loss data and solving the problems that the traditional platform district power consumption simulation method adopts a certain real load, the power consumption parameter of the real load is a fixed value and the power consumption of a simulation power consumer is inconvenient to adjust;
the load of the users in the current simulation transformer area power utilization is adjusted through the configured initial power utilization Pn of each user, different power utilization working conditions of the current simulation transformer area power utilization users are simulated, training and assessment on the line loss analysis capability of the student simulation transformer area are facilitated, and the technical level of analysis, troubleshooting and line loss problem processing of workers is improved;
2) the teacher end sets the single-phase simulation electric energy meter of a part of users to have a fault, the working condition of the single-phase simulation electric energy meter generates management line loss, the student end judges whether the current simulation transformer area has line loss fault, analyzes the type of the current simulation transformer area line loss fault and feeds the type of the current simulation transformer area line loss fault back to the teacher end for examination; on the basis of simulating different power utilization working conditions of power consumers in the current simulation station area, the management level of a practitioner is effectively and comprehensively examined, and the difficult problem that line loss management work of a power supply enterprise needs to be solved urgently is solved;
3) the teacher end obtains the total power P of the current simulation transformer area according to the initial power Pn of each user, and obtains the first electric power of the current simulation transformer area simulation summary table by combining the theoretical line loss rate Y; the problem that the table area master table and the user meter of the simulation table area line loss analysis simulation system cannot generate a direct physical relationship when the table area master table and the user meter are respectively powered by an independent virtual load power supply is solved;
4) a teacher end obtains newly added forward active electric energy freezing data based on pre-configured initial forward active electric energy freezing data and incremental electric energy values, and the newly added forward active electric energy freezing data are written into a simulation general meter and a simulation user meter, so that the technical problem that a simulation platform area line loss analysis simulation system needs to operate for a period of time and then a meter can accumulate electric energy is solved, line loss analysis response time is saved, and working efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of simulation platform area line loss simulation training equipment of the invention.
Fig. 2 is a schematic structural diagram of a line loss fault simulation circuit of the present invention.
Fig. 3 is a circuit schematic diagram of the main controller of the line loss fault simulation circuit of the present invention.
Fig. 4 is a schematic circuit diagram of a relay drive circuit of the voltage break simulation circuit of the present invention.
Fig. 5 is a circuit schematic of the voltage trip simulation circuit of the present invention.
Fig. 6 is a circuit schematic of the current short circuit simulation circuit of the present invention.
Fig. 7 is a circuit schematic of the current reverse polarity analog circuit of the present invention.
Fig. 8 is a circuit schematic of the current cutoff analog circuit of the present invention.
Fig. 9 is a circuit schematic of the RS485 communication fault simulation circuit of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Example 1
A simulation method for simulating line loss data of a simulation transformer area comprises the following steps: the teacher configures the theoretical line loss rate of the current simulation transformer area as a theoretical line loss rate Y, configures the power consumption of each user during normal operation of the current simulation transformer area as an initial power consumption Pn, and configures the management line loss of the current simulation transformer area as a management line loss A; wherein, the management line loss A is 0;
the teacher end obtains the total power P of the current simulation platform area according to the initial power Pn of each user; the teacher end obtains first electric power of a simulation summary table of the current simulation platform area based on the total power utilization power P and the theoretical line loss rate Y;
a teacher end reads first electric power of a simulation summary table of a current simulation platform area, generates a virtual load power supply instruction I and sends the virtual load power supply instruction I to the simulation summary table so as to drive the simulation summary table to be electrified and operated; and the teacher end reads the initial power Pn of each user in the current simulation platform area, generates a virtual load power supply instruction II and transmits the virtual load power supply instruction II to the corresponding simulation user table so as to drive the simulation user table to work electrically.
It should be noted that, in order to simulate various power consumption conditions of the simulation platform area in a real manner, the terminals of the simulation user tables of the current simulation platform area are not connected with a real load or a resistive load, but are connected with independent virtual load power supplies respectively, power supply parameters of the independent virtual load power supplies are determined according to initial power consumption Pn configured by a teacher end, power consumption loads of each household are different, and current magnitude and power factor are also different. Therefore, the power consumption of the users in the simulation transformer area can be set with different power consumption loads through the teacher end, the power consumption difference of each user and the authenticity of the power consumption working condition of the transformer area are shown, and the problems that the power consumption parameters of the traditional transformer area power consumption simulation method are fixed and the power consumption of the simulation power users is inconvenient to adjust are solved.
The terminal of the simulation summary table (summary table) of the current simulation platform area is not connected with a mains supply line, but is connected with a power supply adopting an independent virtual load. When the simulation master meter (master meter) and each single-phase simulation electric energy meter (user meter) in the current simulation transformer area are respectively supplied with power by adopting an independent virtual load power supply, the direct physical relationship between the transformer area master meter and the user meter can not be generated; in order to solve the technical problem, the invention controls an independent virtual load power supply of a simulation general meter (general meter) through a teacher end, and the power supply parameter of the independent virtual load power supply is determined according to the total power consumption P of the simulation region and the theoretical line loss rate Y, so that the electric energy of the simulation general meter (general meter) is related to the electric energy of each single-phase simulation electric energy meter (user meter).
In this embodiment, after each simulation user performs the electric work, the teacher end further executes: and generating a fault setting signal and sending the fault setting signal to a line loss fault simulation circuit, wherein the line loss fault simulation circuit is used for controlling the simulation user meter to work in different fault working conditions.
The line loss types which can be simulated by the simulation platform area line loss data simulation method are as follows: high line loss, negative line loss, non-calculable line loss. Specifically, the fault setting signal comprises at least one of a user electricity stealing simulation signal, a line leakage simulation signal, an electric energy meter wrong wiring simulation signal, an electric energy meter fault simulation signal, an electric energy meter acquisition failure simulation signal, a three-phase current imbalance simulation signal, an electric energy meter file in a station area of the electricity consumption information acquisition system inconsistent with a site, an electric energy meter clock out-of-tolerance simulation signal, a reactive compensation insufficient simulation signal and a power supply radius too large simulation signal.
It should be noted that the management line loss a of the current simulation platform area configured by the teacher end is 0, at this time, the current simulation platform area does not generate the management line loss, and the current simulation platform area is in a normal working state. The teacher end drives each single-phase simulation electric energy meter (user meter) to generate corresponding fault working conditions through the line loss fault simulation circuit, and the teacher end simulates and controls each single-phase simulation electric energy meter to generate management line loss, so that the teacher end provides a basis for line loss analysis and management level assessment of practitioners.
In order to shorten the response time, after the simulation user table works in different fault working conditions, the teacher end further executes: a teacher end obtains instantaneous forward active power I of a simulation summary table in a current simulation platform area; the teacher end obtains an incremental electric energy value I of the simulation general table in a metering period according to the instantaneous forward active power I and a preset time interval; a teacher end obtains a group of newly-added forward active electric energy freezing data I based on pre-configured initial forward active electric energy freezing data M and incremental electric energy value I, and writes the group of newly-added forward active electric energy freezing data I into the simulation general table;
a teacher end obtains instantaneous forward active power II of each simulation user table in a current simulation platform area; the teacher end obtains an incremental electric energy value II of the simulation user meter in a metering period according to the instantaneous forward active power II and a preset time interval; and the teacher end obtains a group of newly-added forward active electric energy freezing data II based on the pre-configured initial forward active electric energy freezing data N and the incremental electric energy value II, and the group of newly-added forward active electric energy freezing data II corresponds to the simulation user table.
It should be noted that the method and the device complete the calculation of the line loss rate of the simulation transformer area by acquiring the forward active electric energy freezing data of the simulation general meter (general meter) and each single-phase simulation electric energy meter (user meter) in the current simulation transformer area through the student terminal. The traditional power utilization simulation platform area simulation and line loss calculation method needs to operate the whole simulation platform area, so that the line loss of the platform area can be calculated only by collecting the frozen electric energy of the platform area master meter and the platform area user electric energy meter at the time T1 and the time T2 after the platform area master meter and the user electric energy meter travel for (T2-T1).
Example 2
The embodiment provides a training method for line loss analysis of a simulation transformer area.
After the power utilization condition of the simulation transformer area is simulated by the simulation transformer area line loss data simulation method in the embodiment 1; the student side reads newly-added forward active electric energy freezing data I of a simulation general table in a current simulation station area and newly-added forward active electric energy freezing data II of each simulation user table; the student side calculates the actual line loss rate II of the current simulation station area according to the newly added forward active electric energy freezing data I and the newly added forward active electric energy freezing data II;
the student side acquires a theoretical line loss rate Y configured by the teacher side; the student side obtains the management line loss rate of the current simulation transformer area through the theoretical line loss rate Y and the actual line loss rate of the current simulation transformer area;
the student end reads the management line loss A of the current simulation transformer area configured by the teacher end, and judges whether the current simulation transformer area has line loss faults or not by combining the calculated management line loss rate of the current simulation transformer area;
and the student side also judges whether the current simulation transformer area works in a normal state or not according to the management line loss rate of the new current simulation transformer area calculated after the line loss fault of the current simulation transformer area is eliminated.
During examination, the teacher end further calculates the actual line loss rate I of the current simulation transformer area according to the newly added forward active electric energy freezing data I and the newly added forward active electric energy freezing data II; and determining whether the simulation result of the line loss data of the simulation transformer area is accurate or not according to the actual line loss rate I of the current simulation transformer area.
It can be understood that when the student end judges that the current simulation platform area has the management line loss, the student end can use a test tool (a current clamp meter, a field check meter, a multifunctional field diagnosis analyzer, etc.) to check the line loss generation reason and eliminate the searched line loss fault of the simulation platform area, and the student end also judges whether the current simulation platform area works in a normal state according to the management line loss rate of the new current simulation platform area calculated after the current simulation platform area line loss fault is eliminated.
The teacher end can also receive the current simulation transformer area line loss fault type sent by the student end, and the student end is scored according to a comparison result of the current simulation transformer area line loss fault type and the line loss fault type corresponding to the preset fault setting signal.
The method can be understood that a student end calculates the power supply amount of a distribution room in the current metering period based on the newly added positive active electric energy freezing data I and the preset metering period; calculating the power consumption of the distribution room in the current metering period based on the newly added forward active electric energy freezing data II and the preset metering period; acquiring the line loss electric quantity of the transformer area according to the transformer area power supply quantity and the transformer area power consumption quantity in the current metering period; and the student terminal obtains the actual line loss rate of the current simulation transformer area by using the transformer area line loss electric quantity and the transformer area power supply quantity in the current metering period.
Example 3
The embodiment provides a simulation method for simulating the line loss data of the transformer area and specific implementation steps of a training method for analyzing the line loss of the transformer area.
Step 1: the teacher end sets the theoretical line loss rate (Y%) of the current simulation transformer area to be 5%; wherein, the station area line loss rate (X%) = theoretical line loss rate (Y%) + management line loss rate (Z%).
Step 2: the teacher end sets the actual power consumption of users in each simulation transformer area under the condition of normal operation of the current simulation transformer area; for example, if the number of users in the distribution area is 10, the initial power consumption of each user is shown in the following table:
if the management line loss of the current simulation platform area is 0 (no electricity stealing users and fault users and the like),
the total power consumption of the simulation district P = (initial power consumption of the user electric energy meter 1 (P1) + initial power consumption of the user electric energy meter 2 (P2) + initial power consumption of the user electric energy meter 3 (P3) + … …) + initial power consumption of the user electric energy meter N (P10);
and step 3: the teacher end obtains first electric power of a current simulation platform area simulation summary table based on the total power utilization power P and the theoretical line loss rate Y;
consists of: the power supply quantity of the transformer area A-the power consumption quantity of the transformer area D = theoretical line loss quantity B + management line loss quantity C, and the following results are obtained: the power supply quantity A of the transformer area = theoretical line loss B + management line loss C + power consumption D of the transformer area;
if the management line loss of the front simulation transformer area is 0, the management line loss C of the current simulation transformer area is also 0; considering that the theoretical line loss rate is 5%, the station power supply quantity A = the theoretical line loss quantity B + the station power consumption D = the station power consumption D/(1-the theoretical line loss rate (Y%));
then, the first electric power = total electric power P/(1-theoretical line loss rate (Y%)) =9504/95% =10004.2W for the current simulation district simulation summary table;
and 4, step 4: the teacher end sends respective current values to the virtual load power supplies corresponding to the simulation general meter (general meter) and each single-phase simulation electric energy meter (user meter) according to the calculation results in the steps 2 and 3, and raises the voltage and current outputs to enable the simulation general meter (general meter) and each single-phase simulation electric energy meter (user meter) to be electrified to start working;
and 5: a teacher end sets fault working conditions to each single-phase simulation electric energy meter (user meter) through an information maintenance interface of the line loss fault simulation circuit and the simulation electric energy meters;
example (c): the teacher end controls the A-phase voltage of the single-phase simulation electric energy meter 2 to be disconnected (the JK4 relay on the line loss fault setting circuit acts) through the line loss fault simulation circuit, the single-phase simulation electric energy meter 2 is driven to generate a wiring fault working condition, and the electric quantity (power) of the single-phase simulation electric energy meter 2 is reduced by 33.3%;
the teacher end controls the single-phase simulation electric energy meter 3 to generate an electric energy meter acquisition failure fault working condition through a line loss fault simulation circuit (JK 22 relay action on a line loss fault setting circuit), the single-phase simulation electric energy meter 3 is driven to generate an acquisition communication fault, the electric quantity of the single-phase simulation electric energy meter 3 cannot be uploaded to the concentrator, and the electric quantity (power) of the single-phase simulation electric energy meter 3 is reduced by 100%;
the teacher end controls the action of an internal relay of the single-phase simulation electric energy meter 4 through the line loss fault simulation circuit, the single-phase simulation electric energy meter 4 is driven to generate a fault working condition of a current transformer, and the electric quantity (power) of the single-phase simulation electric energy meter 4 is reduced by 51%;
the teacher end controls the action of an internal relay of the single-phase simulation electric energy meter 9 through the line loss fault simulation circuit, a current loop in the single-phase simulation electric energy meter 9 is shunted, the single-phase simulation electric energy meter 9 is driven to generate a working condition of a power stealing user, and the electric quantity (power) of the single-phase simulation electric energy meter 9 is reduced by 57.7%;
a teacher end obtains instantaneous forward active power I of a simulation general meter in a current simulation platform area and instantaneous forward active power II of each simulation user meter in the current simulation platform area through a ' 0 meter reading interface ' of the simulation electric energy meter, and the instantaneous forward active power I and the instantaneous forward active power II are shown in the following table as ' actual metering power (Pn ') of the user electric energy meter ';
step 6: the teacher end writes newly-added forward active electric energy freezing data into the simulation general meter (general meter) and each single-phase simulation electric energy meter (user meter);
the teacher end reads the instantaneous forward active power I (station zone power utilization P') of the simulation general table in the current simulation station zone through a meter reading interface of the simulation electric energy meter according to the step 5;
setting the metering period to be 7 days, setting the preset time interval to be 15 minutes, and setting 96 points each day; each point of incremental electric energy meter quantity W = positive active power P' time delta T; (Δ T =0.25 h)
Such as: the single-phase simulation electric energy meter 10 has actual metering power (Pn') =1100W =1.1kWh, and each point increment electric meter quantity W = forward active power P × time Δ T =1.1 × 0.25=0.275 kWh;
assuming that the forward active electric energy frozen data at the time 00:00 of the previous 7 days of the single-phase simulation electric energy meter 10 is 500kWh, the electric energy frozen data at the time 00:15 is 500+0.275 × 1=500.275kWh, the electric energy frozen data at the time 00:30 is 500+0.275 × 2=500.55kWh, the electric energy frozen data at the time 00:45 is 500+0.275 × 3=500.825kWh, the electric energy frozen data at the time 1:00 is 500+0.275 × 4=501.1kWh … …, and so on, 96 × 7=672 point forward active electric energy frozen data are written in total.
And 7: the student terminal uses the electric information acquisition system to acquire the electric quantity to calculate the line loss rate (X%) of the current simulation transformer area;
acquiring forward active total electric energy freezing data of the simulation transformer area master station software in a certain metering cycle (for example, t2 is 00:00 in the last day, and t1 is 00:00 in the last two days) of the simulation transformer area master station software through a meter reading interface of the simulation transformer area master station software and the simulation user electric energy meters, and automatically calculating the line loss rate of the current transformer area to be 20.16% by the power utilization information acquisition system;
the transformer area line loss rate = (transformer area line loss electricity quantity/transformer area power supply quantity) × 100%, the transformer area line loss electricity quantity = transformer area power supply quantity-transformer area power consumption; power supply quantity of the transformer area = power consumption measured by a transformer area master meter t 2-power consumption measured by a transformer area master meter t 1; the power consumption of the transformer district = power consumption of a user electric energy meter 1 + power consumption of a user electric energy meter 2 + power consumption of a user electric energy meter 3 + power consumption of a user electric energy meter N = (user electric energy meter 1 electric energy t 2-user electric energy meter 1 electric energy t1) + (user electric energy meter 2 electric energy t 2-user electric energy meter 2 electric energy t1 + (user electric energy meter 3 electric energy t 2-user electric energy meter 3 electric energy t1) … … + (user electric energy meter N electric energy t 2-user electric energy meter N electric energy t 1);
the transformer area line loss rate = (transformer area line loss capacity/transformer area power supply capacity) × 100% = ((theoretical line loss capacity + management line loss capacity)/transformer area power supply capacity) × 100% = (500 + 1517.6)/10004 × 100% = 20.16%;
and 8: actual operation of working personnel on simulation platform area line loss analysis simulation system
The simulation platform area line loss analysis simulation system simulates and simulates the field working condition with the platform area line loss rate of 20.16%, a worker can use a testing tool (a current clamp meter, a field calibrator, a multifunctional field diagnosis analyzer and the like) on the simulation system to check the line loss generation reason, (the user electric energy meter 9 is an electricity stealing user, a current loop in the electric energy meter is shunted, the electric quantity (power) is less by 57.7%), the user electric energy meter 4 is a current transformer fault, and the electric quantity (power) is less by 51%; the user electric energy meter 2 is in a wiring fault, the voltage of a certain phase is cut off, and the electric quantity (power) is reduced by 33.3%; the user electric energy meter 3 is used for collecting communication faults, electric quantity cannot be uploaded to the concentrator, the electric quantity (power) is reduced by 100%), line loss principle analysis, training and examination are carried out, and the technical level of analysis, management and troubleshooting of line loss of workers is improved.
Example 4
As shown in fig. 1, the embodiment provides a simulation transformer area line loss simulation training device, which includes a trainee end for setting a power consumption acquisition simulation system, a teacher end, a first signal generator, a simulation summary table, at least one simulation user table, a second signal generator, and a line loss fault simulation circuit; the teacher end is in communication connection with the first signal generator and the second signal generator through a switch and a communication repeater; the first signal generator is in communication connection with the simulation summary table; the second signal generator is in communication connection with the simulation user meter through a line loss fault simulation circuit; the line loss fault simulation circuit is also in communication connection with the communication repeater; the student end is respectively in communication connection with the simulation summary table and each simulation user table through the simulation concentrator; the teacher end executes the simulation method for simulating the line loss data of the transformer area, and the student end executes the training method for analyzing the line loss of the transformer area.
Further, the line loss fault simulation circuit is used for controlling the simulation user table to work under different fault conditions. The fault setting signal comprises at least one of a user electricity stealing simulation signal, a line leakage simulation signal, an electric energy meter wrong wiring simulation signal, an electric energy meter fault simulation signal, an electric energy meter acquisition failure simulation signal, a three-phase current imbalance simulation signal, an electric energy meter file in a station area of the electricity consumption information acquisition system inconsistent with a site, an electric energy meter clock out-of-tolerance simulation signal, a reactive compensation insufficient simulation signal and a power supply radius too large simulation signal.
The embodiment further provides a specific implementation manner of the line loss fault simulation circuit, as shown in fig. 2 to fig. 4, the line loss fault simulation circuit includes a main controller, and a voltage open circuit simulation circuit, a current short circuit simulation circuit, a current reverse polarity simulation circuit, and a current breaking simulation circuit, which are respectively connected with the main controller through a relay driving circuit.
As shown in fig. 5, the voltage cut-off simulation circuit includes a reverse buffer, a diode and a relay switch, wherein an input terminal of the reverse buffer is connected to the main controller, an output terminal of the reverse buffer is connected to an anode of the diode, and a cathode of the diode is connected to a power supply terminal; the coil of the relay switch is connected in parallel with two ends of the diode, one static contact of the relay switch is connected with a voltage incoming line end of the simulation user meter, and the movable contact of the relay switch is connected with a voltage output end of the first signal generator. And the relay switch action is used for simulating the condition of management line loss fault caused by wrong wiring fault of the user simulation meter.
As shown in fig. 6, the current short circuit analog circuit includes a reverse buffer, a diode and a relay switch, an input terminal of the reverse buffer is connected to the main controller, an output terminal of the reverse buffer is connected to an anode of the diode, and a cathode of the diode is connected to a power supply terminal; the coil of the relay switch is connected in parallel with the two ends of the diode, the movable contact of the relay switch is connected with a certain phase current inlet end of the simulation user meter, and the fixed contact of the relay switch is connected with a certain phase current outlet end. And the relay switch acts to simulate the fault condition of management line loss caused by electricity stealing of users.
As shown in fig. 7, the current reverse polarity analog circuit includes a reverse buffer, a diode and a double-pole double-throw relay switch, an input end of the reverse buffer is connected to the main controller, an output end of the reverse buffer is connected to an anode of the diode, and a cathode of the diode is connected to a power supply end; the coil of the double-pole double-throw relay switch is connected in parallel with the two ends of the diode, one movable contact of the double-pole double-throw relay switch is connected with a certain phase current incoming line end of the simulation user meter, the other movable contact of the double-pole double-throw relay switch is connected with a certain phase current outgoing line end of the simulation user meter, a first normally closed stationary contact of the double-pole double-throw relay switch is connected with a second normally open stationary contact, and the second normally closed stationary contact of the double-pole double-throw relay switch is connected with the first normally open stationary contact. And the double-pole double-throw relay acts to simulate the situation of management line loss fault caused by current reverse polarity fault.
As shown in fig. 8, the current-cutoff analog circuit includes a reverse buffer, a diode, and a double-pole double-throw relay switch, wherein an input end of the reverse buffer is connected to the main controller, an output end of the reverse buffer is connected to an anode of the diode, and a cathode of the diode is connected to a power supply end; the coil of the double-pole double-throw relay switch is connected in parallel with two ends of the diode, one movable contact of the double-pole double-throw relay switch is connected with a current outlet end of a second signal generator of the simulation user meter, the other movable contact of the double-pole double-throw relay switch is connected with a current inlet end of the second signal generator, a first normally closed static contact of the double-pole double-throw relay switch is connected with a certain phase current inlet end of the simulation user meter, and a second normally closed static contact of the double-pole double-throw relay switch is connected with a certain phase current outlet end of the simulation user meter. The double pole double throw relay switches to simulate a management line loss fault condition caused by a cutoff fault (line leakage).
As shown in fig. 9, the line loss fault simulation circuit further includes an RS485 communication fault simulation circuit connected to the main controller, where the RS485 communication fault simulation circuit includes a reverse buffer, a diode, and a double-pole double-throw relay switch, an input end of the reverse buffer is connected to the main controller, an output end of the reverse buffer is connected to an anode of the diode, and a cathode of the diode is connected to a power supply terminal; the coil of the double-pole double-throw relay switch is connected in parallel at two ends of the diode, one movable contact of the double-pole double-throw relay switch is connected with a 485A wiring end of the communication repeater, the other movable contact of the double-pole double-throw relay switch is connected with a 485B wiring end of the communication repeater, a first normally closed stationary contact of the double-pole double-throw relay switch is connected with a 485A wiring end of the simulation user meter, and a second normally closed stationary contact of the double-pole double-throw relay switch is connected with a 485B wiring end of the simulation user meter. And the double-pole double-throw relay acts to simulate the condition of management line loss fault caused by collecting communication fault.
Specifically, the first signal generator and the second signal generator are program-controlled power supplies, the simulation general meter is a simulation three-phase electric energy meter, and the simulation user meter is a simulation three-phase electric energy meter and/or a simulation single-phase meter.
Example 5
The embodiment also provides a readable storage medium, on which instructions are stored, and the instructions, when executed by a processor, implement the steps of the simulation method for simulating the station area line loss data as described above.
The present embodiment also provides another readable storage medium, on which instructions are stored, and the instructions, when executed by the processor, implement the steps of the training method for simulating the platform area line loss analysis as described above.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the above-described modules is only one logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated module may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, all or part of the flow in the method of the embodiments described above may be implemented by a computer program, which may be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. The computer program includes computer program code, and the computer program code may be in a source code form, an object code form, an executable file or some intermediate form.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (7)
1. A simulation method for simulating line loss data of a simulation transformer area is characterized by comprising the following steps:
the teacher configures the theoretical line loss rate of the current simulation transformer area as a theoretical line loss rate Y, configures the power consumption of each user during normal operation of the current simulation transformer area as an initial power consumption Pn, and configures the management line loss of the current simulation transformer area as a management line loss A;
the teacher end obtains the total power P of the current simulation platform area according to the initial power Pn of each user;
the teacher end obtains first electric power of a simulation summary table of the current simulation platform area based on the total power utilization power P and the theoretical line loss rate Y;
a teacher end reads the first electric power of the simulation summary table, generates a virtual load power supply instruction I and sends the virtual load power supply instruction I to the simulation summary table so as to drive the simulation summary table to be electrified and operated;
a teacher end reads the initial power Pn of each user in the current simulation platform area, generates a virtual load power supply instruction II and transmits the virtual load power supply instruction II to a corresponding simulation user table so as to drive the simulation user table to work electrically;
after each simulation user is electrified and works, the teacher end further executes: generating a fault setting signal and sending the fault setting signal to a line loss fault simulation circuit, wherein the line loss fault simulation circuit is used for controlling the simulation user table to work under different fault working conditions;
after the simulation user table works under different fault working conditions, the teacher end further executes:
a teacher end obtains instantaneous forward active power I of a simulation summary table of a current simulation platform area;
the teacher end obtains an incremental electric energy value I of the simulation general table in a metering period according to the instantaneous forward active power I and a preset time interval;
a teacher end obtains a group of newly-added forward active electric energy freezing data I based on pre-configured initial forward active electric energy freezing data M and incremental electric energy value I, and writes the group of newly-added forward active electric energy freezing data I into the simulation general table;
a teacher end obtains instantaneous forward active power II of each simulation user table in a current simulation platform area;
the teacher end obtains an incremental electric energy value II of the simulation user meter in a metering period according to the instantaneous forward active power II and a preset time interval;
a teacher end obtains a group of newly-added forward active electric energy freezing data II based on the pre-configured initial forward active electric energy freezing data N and the incremental electric energy value II, and a simulation user table corresponding to the group of newly-added forward active electric energy freezing data II;
and the teacher end calculates the actual line loss rate I of the current simulation transformer area according to the newly added forward active electric energy freezing data I and the newly added forward active electric energy freezing data II so as to determine whether the simulation transformer area line loss data simulation result is accurate.
2. The simulation method of line loss data of the simulation transformer area according to claim 1, wherein: the fault setting signal comprises at least one of a user electricity stealing simulation signal, a line electric leakage simulation signal, an electric energy meter misconnection simulation signal, an electric energy meter fault simulation signal, an electric energy meter acquisition failure simulation signal and a three-phase current imbalance simulation signal.
3. The simulation method of line loss data of the simulation transformer area according to claim 1, wherein: and the teacher end receives the current simulation transformer area line loss fault type sent by the student end, and scores the student end according to the comparison result of the current simulation transformer area line loss fault type and the line loss fault type corresponding to the preset fault setting signal.
4. A training method for line loss analysis of a simulation transformer area, which is characterized in that after the simulation transformer area power consumption condition is simulated through the simulation transformer area line loss data simulation method of any one of claims 1 to 3:
the student side reads newly-added forward active electric energy freezing data I of a simulation general table in a current simulation station area and newly-added forward active electric energy freezing data II of each simulation user table;
the student side calculates the actual line loss rate II of the current simulation station area according to the newly added forward active electric energy freezing data I and the newly added forward active electric energy freezing data II;
the student side acquires a theoretical line loss rate Y configured by the teacher side;
the student side obtains the management line loss rate of the current simulation transformer area through the theoretical line loss rate Y and the actual line loss rate of the current simulation transformer area;
the student end reads the management line loss A of the current simulation transformer area configured by the teacher end, and judges whether the current simulation transformer area has line loss faults or not by combining the calculated management line loss rate of the current simulation transformer area;
and the student side also judges whether the current simulation transformer area works in a normal state or not according to the management line loss rate of the new current simulation transformer area calculated after the line loss fault of the current simulation transformer area is eliminated.
5. The utility model provides a simulation platform district line loss simulation training equipment, is including setting up the student end of power consumption collection analog system, its characterized in that: the system also comprises a teacher end, a first signal generator, a simulation summary table, at least one simulation user table, a second signal generator and a line loss fault simulation circuit;
the teacher end is in communication connection with the first signal generator and the second signal generator through a switch and a communication repeater; the first signal generator is in communication connection with the simulation summary table; the second signal generator is in communication connection with the simulation user meter through a line loss fault simulation circuit; the line loss fault simulation circuit is also in communication connection with the communication repeater;
the student end is respectively in communication connection with the simulation summary table and each simulation user table through the simulation concentrator;
the teacher end executes the simulation method for simulating the line loss data of the simulation transformer area according to any one of claims 1 to 3, and the student end executes the training method for analyzing the line loss data of the simulation transformer area according to claim 4.
6. A readable storage medium having stored thereon instructions, which when executed by a processor, implement the steps of the simulation method of line loss data simulation according to any one of claims 1 to 3.
7. A readable storage medium having stored thereon instructions which, when executed by a processor, carry out the steps of the training method for simulating line loss analysis of a transformer area of claim 4.
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| CN114167750A (en) * | 2021-11-29 | 2022-03-11 | 国网浙江省电力有限公司培训中心 | Simulation training system for abnormal line loss processing of transformer area |
| CN114999256A (en) * | 2022-06-22 | 2022-09-02 | 河南赛伦交通科技有限公司 | Computer interlocking comprehensive training method and system |
| CN116090152B (en) * | 2022-07-14 | 2024-02-13 | 中国电力科学研究院有限公司 | Simulation control method and device for theoretical line loss and line loss simulation training equipment |
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| CN103390254B (en) * | 2013-08-08 | 2016-03-09 | 国网重庆市电力公司南岸供电分公司 | A kind of low-voltage platform area line loss Integrated Assessment On The Level method |
| CN106327979A (en) * | 2016-10-28 | 2017-01-11 | 国网河南省电力公司电力科学研究院 | Analog and simulation training system for collecting power information |
| CN108597291B (en) * | 2018-05-14 | 2023-09-26 | 国家电网有限公司 | Distribution network line loss simulation training system |
| CN109447329A (en) * | 2018-10-11 | 2019-03-08 | 国网上海市电力公司 | A kind of platform area Controlling line loss platform based on line loss early warning analysis model |
| CN109379152A (en) * | 2018-11-16 | 2019-02-22 | 国网江苏省电力有限公司电力科学研究院 | A kind of acquisition of power information and device diagnostic assessment simulator and implementation method |
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