CN113759733A - Intelligent household system combined with electric energy scheduling and control method thereof - Google Patents
Intelligent household system combined with electric energy scheduling and control method thereof Download PDFInfo
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- CN113759733A CN113759733A CN202110699058.XA CN202110699058A CN113759733A CN 113759733 A CN113759733 A CN 113759733A CN 202110699058 A CN202110699058 A CN 202110699058A CN 113759733 A CN113759733 A CN 113759733A
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
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- G05B2219/2639—Energy management, use maximum of cheap power, keep peak load low
Abstract
The invention provides an intelligent home system combined with electric energy scheduling, which comprises: the intelligent electric meter is used for receiving the power of an electric appliance and is in wireless connection with the power grid monitoring platform; the power grid monitoring platform is used for judging the type of the electrical appliance and binding the unique identification code of the intelligent plug to the electrical appliance; the intelligent plugs are used for connecting the electric appliances and the commercial power socket, identifying the power consumption of the electric appliances and sending the power consumption to the intelligent electric meter; each intelligent plug is provided with a unique identification code; and the distribution area broadband carrier concentrator is used for receiving a power grid monitoring platform control instruction and sending a set carrier signal to the intelligent electric meter. According to the invention, through carrier communication, the national power grid management end can uniformly regulate and control the load of a user who voluntarily participates in power grid peak clipping, and the power grid peak clipping at the low-voltage side is realized.
Description
Technical Field
The invention relates to the technical field of intelligent home, in particular to an intelligent home system combined with electric energy scheduling and a control method thereof.
Background
Due to the improvement of living standard, more and more electric appliances are used in common families, for example, air conditioners are arranged in each room, water heaters are arranged in toilets and kitchens, electric cookers, microwave ovens, electric kettles and the like are arranged in kitchens, so that electric resources are used by the electric appliances, electric energy used by each electric appliance is different, and users cannot know the electricity consumption and electricity utilization condition of each electric appliance. The intelligent household electricity safety monitoring system comprises an intelligent household electricity monitoring module, an intelligent household electricity monitoring platform and an intelligent terminal, wherein the intelligent household electricity monitoring module acquires intelligent household electricity information based on a wireless sensor network and sends the acquired intelligent household electricity information to the intelligent household electricity monitoring platform, the intelligent household electricity monitoring platform is used for receiving, storing and displaying the intelligent household electricity information, compares the intelligent household electricity information with a normal threshold value, and outputs an alarm signal if the intelligent household electricity information exceeds the normal threshold value; the intelligent terminal is connected with the intelligent household electricity monitoring platform through a communication network and is used for accessing the electric quantity information of the intelligent household appliances in the intelligent household electricity monitoring platform in real time. The intelligent household electricity monitoring module is used for acquiring electric quantity information of intelligent household appliances based on a wireless sensor network, a plurality of sensors are required to be correspondingly arranged on a plurality of electric appliances, the sensors need to be installed to change indoor circuits or change access ends of the electric appliances, and the sensors are invasive changes, on one hand, a plurality of sensors are required, the sensors are also power-consuming, and the consumed electric quantity is large; on the other hand, the quality of the sensor is uneven, the sensor is not monitored, when the sensor breaks down, electric leakage can be caused, and potential safety hazards exist. The electricity consumption of each household is increased, the peak value of the power grid is increased, the peak time is increased, however, some devices do not need to be opened for a long time and can be closed in the peak period to achieve the purpose of peak clipping, 1w of power consumption of each household is reduced, 100 ten thousand watts can be reduced by 100 ten thousand households, the peak clipping is obvious, however, the prior art lacks uniform regulation and control devices for the low-voltage side, and the peak clipping of the power grid in the peak period cannot be well realized.
Disclosure of Invention
The invention solves the problems of high power consumption and potential safety hazard caused by the fact that sensors are installed in an invasive mode in household power utilization safety monitoring, provides the intelligent household system combined with electric energy scheduling and the control method thereof, does not change the lines of indoor lines and electric appliances, and installs load identification at the input end of a total electric meter in a non-invasive mode, so that the use of a large number of sensors is reduced, and the intelligent household system is safe and efficient. The invention also solves the problem that the prior art lacks a uniform regulation and control device on the low-voltage side, and can enable the national power grid management end to uniformly regulate and control the load of users voluntarily participating in power grid peak clipping through carrier communication, thereby realizing the power grid peak clipping on the low-voltage side.
In order to realize the purpose, the following technical scheme is provided:
an intelligent home system incorporating power scheduling, comprising:
the intelligent electric meter is used for receiving the power of an electric appliance and is in wireless connection with the power grid monitoring platform;
the power grid monitoring platform is used for judging the type of the electric appliance and binding the unique identification code of the intelligent plug to the electric appliance;
the intelligent plugs are used for connecting the electric appliances and the commercial power socket, identifying the power consumption of the electric appliances and sending the power consumption to the intelligent electric meter; each intelligent plug is provided with a unique identification code;
the distribution area broadband carrier concentrator is used for receiving a power grid monitoring platform control instruction and sending a set carrier signal to the intelligent ammeter; the intelligent electric meter outputs a control carrier signal according to a scheduling protocol, the intelligent plug is provided with a relay, and when the intelligent plug receives the control carrier signal, the relay is disconnected, and the electric appliance stops working;
the scheduling protocol is formulated by the power grid monitoring platform and the user side together, the frequency bands of the control carrier signals received by each intelligent plug are different, and the intelligent electric meter controls the on-off of the relays of different intelligent plugs by sending out different frequency band control carrier signals.
The power grid monitoring platform is used for judging whether the load on the low-voltage side needs to be closed or not so as to achieve the purpose of peak clipping, when the load on the low-voltage side needs to be closed, the power grid monitoring platform sends a closing instruction to the station area broadband carrier concentrator, the station area broadband carrier concentrator sends a closing signal to the intelligent electric meter through carrier communication, the intelligent electric meter sends the closing signal to the intelligent plug corresponding to the intelligent electric meter through the carrier communication, and finally the intelligent plug closes the corresponding electric appliance so as to achieve the purpose of peak clipping of the power grid. The low-voltage side has more users and large overall power consumption, peak clipping at the low-voltage side is realized, the peak value of the power grid can be greatly reduced, the duration time of the peak period is prolonged, the power grid can output stable power, and the normal work of the electrical appliance which must be used is ensured.
According to the invention, through non-invasive installation of the intelligent plug, the monitoring cost is saved, meanwhile, the potential safety hazard caused by the self fault of the sensor is reduced, and the safety and the high efficiency are realized.
Preferably, the intelligent electric meter comprises a master control module and a power supply module, the master control module is electrically connected with a load identification module, a timing module, a carrier signal receiving module and a carrier signal output module, the power supply module is connected with a mains supply for supplying power to the intelligent electric meter, the area broadband carrier concentrator conveys a set carrier signal to the carrier signal receiving module, and the carrier signal output module outputs a control carrier signal.
Preferably, the intelligent plug comprises a sub-control module, a conversion plug and a conversion socket, the sub-control module is electrically connected with a carrier signal receiving unit, a mutual inductor and a relay, and the carrier signal receiving unit is used for receiving a control carrier signal; the conversion plug, the relay and the conversion socket are sequentially connected in series, the mutual inductor is sleeved on a live wire of the conversion plug and used for identifying the power consumption of an electric appliance, and the sub-control module is used for controlling the on-off of the relay and simultaneously sending the power consumption of the electric appliance to the load identification module.
The control method of the intelligent home system combined with electric energy dispatching adopts the intelligent home system combined with electric energy dispatching, and comprises the following steps:
the SA is used for identifying unidentified flexible load electrical appliances, binding the identified electrical appliances with the unique identification code of the intelligent plug through the power grid monitoring platform, generating a scheduling protocol and sending the scheduling protocol to a user, wherein the scheduling protocol is bound with the user number information of the intelligent electric meter of the user, and the user selects the electrical appliances on the scheduling protocol, namely the electrical appliances on the scheduling protocol which are simultaneously selected by the user can be scheduled by the power supply network monitoring platform, so that the scheduling protocol is formulated;
SB, the total consumption change curve of electric wire netting is acquireed in real time to electric wire netting monitoring platform, judges whether the power of the total consumption of electric wire netting is more than or equal to regulation and control power threshold value, if, electric wire netting monitoring platform send control command to platform district broadband carrier concentrator, platform district broadband carrier concentrator passes through carrier communication, sends and sets for carrier signal to smart electric meter, and smart electric meter colludes the control carrier signal that corresponds with electrical apparatus output according to the scheduling protocol, and smart plug is equipped with the relay, and when smart plug received control carrier signal, the relay disconnection, electrical apparatus stop work.
Preferably, the identifying the unidentified flexible load electrical appliance specifically includes:
s1, collecting the power consumption of the electric appliance by the intelligent plug at the frequency f to obtain sampling points, and fitting a daily load curve of the user according to the sampling points;
s2, extracting a positive transient segment and a negative transient segment of the daily load curve of the user, and taking the condition that the amplitude of power change in delta t exceeds a preset value P1 as a transient judgment condition;
s3, taking two ends of the positive transient segment and the negative transient segment as first class feature points, counting the number N1 of the first class feature points, and sequentially connecting all the first class feature points along a time axis by a broken line to form a broken line graph;
s4, connecting all sampling points in sequence along the time axis direction by using line segments, traversing the sampling points, judging whether an included angle between two line segments connecting the sampling points is greater than a preset value, if so, bringing the sampling points into a second class of feature points, and counting the number N2 of the second class of feature points;
s5, if the difference value between N2 and N1 exceeds the preset value, discarding the daily load curve of the user on the current day, and executing the step S1 again on the second day, otherwise, entering the step S6;
s6, deleting second type feature points far away from the first type feature points, connecting the remaining second type feature points by a broken line, and then fitting the curve to be used as an adjusting load curve;
s7, to adjust the load curve, to re-extract the positive transient segment and the negative transient segment,
s8, establishing a power transient table according to the positive transient segment and the negative transient segment;
and S9, matching the power transient segments according to the power transient table, matching the negative transient segments with the positive transient segments if the negative transient segments with equivalent power can be found within a set time length S after the time stamps of the positive transient segments, associating the negative transient segments with the positive transient segments if a plurality of matched negative transient segments exist, associating the negative transient segments with the closest power, generating a load identification record for the matched positive transient segments and negative transient segments, and storing the associated time stamps of the positive transient segments and the negative transient segments.
Preferably, the power transient table includes a number of values of a rated positive transient power and a corresponding total number thereof, the rated positive transient power is an average power of positive transient segments of the same class, and a classification process of the positive transient segments of the same class is as follows:
s801, counting the number of positive transient segments, the power of the positive transient segments and the power of the negative transient segments within a period of time T;
s802, sequencing the residual positive transient power, and classifying positive transient segments by an error range of 2%; and removing positive transient segments and negative transient segments with power variation less than 1W during classification.
Preferably, the step S9 specifically includes:
and when the number N of the rated positive transient power is greater than or equal to a set value N, judging whether the power of a negative transient segment paired with the rated positive transient power exists or not within a set time length S, if so, generating a load identification record, and if not, marking the load identification record as unidentified.
The invention has the beneficial effects that: the power grid monitoring platform is used for judging whether the load on the low-voltage side needs to be closed or not so as to achieve the purpose of peak clipping, when the load on the low-voltage side needs to be closed, the power grid monitoring platform sends a closing instruction to the station area broadband carrier concentrator, the station area broadband carrier concentrator sends a closing signal to the intelligent electric meter through carrier communication, the intelligent electric meter sends the closing signal to the intelligent plug corresponding to the intelligent electric meter through the carrier communication, and finally the intelligent plug closes the corresponding electric appliance so as to achieve the purpose of peak clipping of the power grid. The low-voltage side has more users and large overall power consumption, peak clipping at the low-voltage side is realized, the peak value of the power grid and the duration time of the peak period can be greatly reduced, the power grid can output stable power, and the normal work of the electric appliance which must be used is ensured. According to the invention, through non-invasive installation of the intelligent plug, the monitoring cost is saved, meanwhile, the potential safety hazard caused by the self fault of the sensor is reduced, and the safety and the high efficiency are realized.
Drawings
FIG. 1 is a schematic structural connection diagram of the embodiment.
Detailed Description
Example (b):
this embodiment proposes an intelligent home system that combines electric energy scheduling, refer to fig. 1, include:
the intelligent electric meter is used for receiving the power of an electric appliance and is in wireless connection with the power grid monitoring platform;
the power grid monitoring platform is used for judging the type of the electric appliance and binding the unique identification code of the intelligent plug to the electric appliance;
the intelligent plugs are used for connecting the electric appliances and the commercial power socket, identifying the power consumption of the electric appliances and sending the power consumption to the intelligent electric meter; each intelligent plug is provided with a unique identification code;
the distribution area broadband carrier concentrator is used for receiving a power grid monitoring platform control instruction and sending a set carrier signal to the intelligent ammeter; the intelligent electric meter outputs a control carrier signal according to a scheduling protocol, the intelligent plug is provided with a relay, and when the intelligent plug receives the control carrier signal, the relay is disconnected, and the electric appliance stops working;
the scheduling protocol is established by the power grid monitoring platform and the user side together, the frequency bands of the control carrier signals received by each intelligent plug are different, and the intelligent electric meter controls the on-off of the relays of different intelligent plugs by sending out the control carrier signals of different frequency bands.
The intelligent electric meter comprises a master control module and a power supply module, wherein the master control module is electrically connected with a load identification module, a timing module, a carrier signal receiving module and a carrier signal output module, the power supply module is connected with commercial power input and supplies power for the intelligent electric meter, a station area broadband carrier concentrator conveys a set carrier signal to the carrier signal receiving module, and the carrier signal output module outputs a control carrier signal.
The intelligent plug comprises a sub-control module, a conversion plug and a conversion socket, wherein the sub-control module is electrically connected with a carrier signal receiving unit, a mutual inductor and a relay, and the carrier signal receiving unit is used for receiving a control carrier signal; the conversion plug, the relay and the conversion socket are sequentially connected in series, the mutual inductor is sleeved on a live wire of the conversion plug and used for identifying the power consumption of the electrical appliance, and the sub-control module is used for controlling the on-off of the relay and simultaneously sending the power consumption of the electrical appliance to the load identification module.
The power grid monitoring platform is used for judging whether the load on the low-voltage side needs to be closed or not so as to achieve the purpose of peak clipping, when the load on the low-voltage side needs to be closed, the power grid monitoring platform sends a closing instruction to the station area broadband carrier concentrator, the station area broadband carrier concentrator sends a closing signal to the intelligent electric meter through carrier communication, the intelligent electric meter sends the closing signal to the intelligent plug corresponding to the intelligent electric meter through the carrier communication, and finally the intelligent plug closes the corresponding electric appliance so as to achieve the purpose of peak clipping of the power grid. The low-voltage side has more users and large overall power consumption, peak clipping at the low-voltage side is realized, the peak value of the power grid can be greatly reduced, the duration time of the peak period is prolonged, the power grid can output stable power, and the normal work of the electrical appliance which must be used is ensured.
According to the invention, through non-invasive installation of the intelligent plug, the monitoring cost is saved, meanwhile, the potential safety hazard caused by the self fault of the sensor is reduced, and the safety and the high efficiency are realized.
The embodiment further provides an intelligent home system control method combined with electric energy scheduling, and the intelligent home system combined with electric energy scheduling includes the following steps:
the SA is used for identifying unidentified flexible load electrical appliances, binding the identified electrical appliances with the unique identification code of the intelligent plug through the power grid monitoring platform, generating a scheduling protocol and sending the scheduling protocol to a user, wherein the scheduling protocol is bound with the user number information of the intelligent electric meter of the user, and the user selects the electrical appliances on the scheduling protocol, namely agrees to the scheduling of the power supply network monitoring platform of the selected electrical appliances, so that the scheduling of the scheduling protocol is completed;
and SB (SB), the power grid monitoring platform acquires a power grid total power consumption change curve in real time, judges whether the power of the power grid total power consumption is larger than or equal to a regulation power threshold value, if so, the power grid monitoring platform sends a control instruction to the station area broadband carrier concentrator, the station area broadband carrier concentrator sends a set carrier signal to the intelligent electric meter through carrier communication, the intelligent electric meter outputs a corresponding control carrier signal according to an electric appliance selected by a scheduling protocol, the intelligent plug is provided with a relay, and when the intelligent plug receives the control carrier signal, the relay is disconnected, and the electric appliance stops working.
The method for identifying the unidentified flexible load electrical appliance specifically comprises the following steps:
s1, collecting the power consumption of the electric appliance by the intelligent plug at the frequency f to obtain sampling points, and fitting a daily load curve of the user according to the sampling points;
s2, extracting a positive transient segment and a negative transient segment of the daily load curve of the user, and taking the condition that the amplitude of power change in delta t exceeds a preset value P1 as a transient judgment condition;
s3, taking two ends of the positive transient segment and the negative transient segment as first class feature points, counting the number N1 of the first class feature points, and sequentially connecting all the first class feature points along a time axis by a broken line to form a broken line graph;
s4, connecting all sampling points in sequence along the time axis direction by using line segments, traversing the sampling points, judging whether an included angle between two line segments connecting the sampling points is greater than a preset value, if so, bringing the sampling points into a second class of feature points, and counting the number N2 of the second class of feature points;
s5, if the difference value between N2 and N1 exceeds the preset value, discarding the daily load curve of the user on the current day, and executing the step S1 again on the second day, otherwise, entering the step S6;
s6, deleting second type feature points far away from the first type feature points, connecting the remaining second type feature points by a broken line, and then fitting the curve to be used as an adjusting load curve;
s7, to adjust the load curve, to re-extract the positive transient segment and the negative transient segment,
s8, establishing a power transient table according to the positive transient segment and the negative transient segment; the power transient table comprises a plurality of numerical values of rated positive transient power and the corresponding total number of the numerical values, the rated positive transient power is the average power of the positive transient segments of the same class, and the classification process of the positive transient segments of the same class is as follows:
reference is made to the following table:
| rated positive transient power | Total number of |
| 5W | 13 |
| 12W | 24 |
| 30W | 41 |
| 80W | 23 |
| … | … |
S801, counting the number of positive transient segments, the power of the positive transient segments and the power of the negative transient segments within a period of time T;
s802, sequencing the residual positive transient power, and classifying positive transient segments by an error range of 2%; and removing positive transient segments and negative transient segments with power variation less than 1W during classification.
And S9, matching the power transient segments according to the power transient table, matching the negative transient segments with the positive transient segments if the negative transient segments with equivalent power can be found within a set time length S after the time stamps of the positive transient segments, associating the negative transient segments with the positive transient segments if a plurality of matched negative transient segments exist, associating the negative transient segments with the closest power, generating a load identification record for the matched positive transient segments and negative transient segments, and storing the associated time stamps of the positive transient segments and the negative transient segments.
Step S9 specifically includes:
and when the number N of the rated positive transient power is greater than or equal to a set value N, judging whether the power of a negative transient segment paired with the rated positive transient power exists or not within a set time length S, if so, generating a load identification record, and if not, marking the load identification record as unidentified.
If a user cooperates with the single household appliances to be started in turn, the identification process is simplified, the household appliances corresponding to loads can be quickly known, the power change of the household appliances with non-flexible power, namely pure-resistance household appliances, can be directly identified constantly, the working power of the household appliances with flexible power, namely household appliances working in a variable frequency mode, such as computers, air conditioners and the like, is not fixed, the power of the household appliances needs to be collected within a certain time, a power transient table is established, the pairing of power transient segments is carried out according to the power transient table, the load information and the power consumption are identified, and the line change of indoor circuits and the line change of the household appliances are not carried out.
The classified positive transient segment takes the average power of the classified positive transient segment as the rated positive transient power, so that the load identification accuracy is favorably improved, meanwhile, the positive transient segment with the power change smaller than 1W is removed, the positive transient segment with the small-range power change is filtered, the load identification efficiency is favorably improved, statistics is carried out in one month, the use frequency of the household appliance in one month can be obtained, and the follow-up more comprehensive analysis of the power utilization condition of a user is favorably carried out.
For the household appliances with flexible power, namely the household appliances working in a frequency conversion manner, the power of the household appliances working in the frequency conversion manner is equivalent in the opening and closing process, the power is constantly changed in the working process, the power transient is inconsistent, when the number N of the rated positive transient power is larger than or equal to a set value N in a period of time, the classified positive transient segment corresponding to the rated positive transient power can be considered to belong to a class of household appliances working in the frequency conversion manner, if the power of the negative transient segment matched with the rated positive transient power can be found within a set time S, the working period of the household appliances working in the frequency conversion manner can be found, a load identification record is generated, and a user can know the household appliances corresponding to the load identification record.
The absolute value of the power of the negative transient segment is 0-2% different from the absolute value of the rated positive transient power, and the pairing is considered to be successful.
Claims (7)
1. An intelligent home system that combines electric energy dispatch, characterized by includes:
the intelligent electric meter is used for receiving the power of an electric appliance and is in wireless connection with the power grid monitoring platform;
the power grid monitoring platform is used for judging the type of the electrical appliance and binding the unique identification code of the intelligent plug to the electrical appliance;
the intelligent plugs are used for connecting the electric appliances and the commercial power socket, identifying the power consumption of the electric appliances and sending the power consumption to the intelligent electric meter; each intelligent plug is provided with a unique identification code;
the distribution area broadband carrier concentrator is used for receiving a power grid monitoring platform control instruction and sending a set carrier signal to the intelligent ammeter; the intelligent electric meter outputs a control carrier signal according to a scheduling protocol, the intelligent plug is provided with a relay, and when the intelligent plug receives the control carrier signal, the relay is disconnected, and the electric appliance stops working;
the scheduling protocol is formulated by the power grid monitoring platform and the user side together, the frequency bands of the control carrier signals received by each intelligent plug are different, and the intelligent electric meter controls the on-off of the relays of different intelligent plugs by sending out different frequency band control carrier signals.
2. The intelligent household system combining with electric energy scheduling of claim 1, wherein the intelligent electric meter comprises a master control module and a power supply module, the master control module is electrically connected with a load identification module, a timing module, a carrier signal receiving module and a carrier signal output module, the power supply module is connected with a mains supply input to supply power to the intelligent electric meter, the station area broadband carrier concentrator delivers a set carrier signal to the carrier signal receiving module, and the carrier signal output module outputs a control carrier signal.
3. The intelligent household system combining electric energy scheduling as claimed in claim 2, wherein the intelligent plug comprises a sub-control module, a conversion plug and a conversion socket, the sub-control module is electrically connected with a carrier signal receiving unit, a mutual inductor and a relay, and the carrier signal receiving unit is used for receiving a control carrier signal; the conversion plug, the relay and the conversion socket are sequentially connected in series, the mutual inductor is sleeved on a live wire of the conversion plug and used for identifying the power consumption of an electric appliance, and the sub-control module is used for controlling the on-off of the relay and simultaneously sending the power consumption of the electric appliance to the load identification module.
4. A control method of an intelligent home system combined with electric energy scheduling, which adopts the intelligent home system combined with electric energy scheduling of any one of claims 1-3, and is characterized by comprising the following steps:
the SA is used for identifying unidentified flexible load electrical appliances, binding the identified electrical appliances with the unique identification code of the intelligent plug through the power grid monitoring platform, generating a scheduling protocol and sending the scheduling protocol to a user, wherein the scheduling protocol is bound with the user number information of the intelligent electric meter of the user, and the user selects the electrical appliances on the scheduling protocol, namely agrees to the scheduling of the power supply network monitoring platform of the selected electrical appliances, so that the scheduling of the scheduling protocol is completed;
SB, the total power consumption change curve of electric wire netting is acquireed in real time to electric wire netting monitoring platform, judges whether the power of the total power consumption of electric wire netting is more than or equal to regulation and control power threshold value, if, electric wire netting monitoring platform send control command to platform district broadband carrier concentrator, platform district broadband carrier concentrator passes through carrier communication, sends and sets for carrier signal to smart electric meter, and smart electric meter colludes the control carrier signal that corresponds with the electrical apparatus output that selects according to the scheduling protocol, and smart plug is equipped with the relay, and when smart plug received control carrier signal, the relay disconnection, electrical apparatus stop work.
5. The intelligent household system control method combined with power dispatching as claimed in claim 4, wherein the identifying of the unidentified flexible load electrical appliances specifically comprises:
s1, collecting the power consumption of the electric appliance by the intelligent plug at the frequency f to obtain sampling points, and fitting a daily load curve of the user according to the sampling points;
s2, extracting a positive transient segment and a negative transient segment of the daily load curve of the user, and taking the condition that the amplitude of power change in delta t exceeds a preset value P1 as a transient judgment condition;
s3, taking two ends of the positive transient segment and the negative transient segment as first class feature points, counting the number N1 of the first class feature points, and sequentially connecting all the first class feature points along a time axis by a broken line to form a broken line graph;
s4, connecting all sampling points in sequence along the time axis direction by using line segments, traversing the sampling points, judging whether the included angle between two line segments connecting the sampling points is greater than a preset value, if the included angle is greater than the preset value, bringing the sampling points into a second type of characteristic points, and counting the number N2 of the second type of characteristic points;
s5, if the difference value between N2 and N1 exceeds the preset value, discarding the daily load curve of the user on the current day, and executing the step S1 again on the second day, otherwise, entering the step S6;
s6, deleting the second type of characteristic points far away from the first type of characteristic points, connecting the remaining second type of characteristic points by a broken line, and then fitting the curve to be used as an adjusting load curve;
s7, to adjust the load curve, to re-extract the positive transient segment and the negative transient segment,
s8, establishing a power transient table according to the positive transient segment and the negative transient segment;
and S9, matching the power transient segments according to the power transient table, matching the negative transient segments with the positive transient segments if the negative transient segments with equivalent power can be found within a set time length S after the time stamps of the positive transient segments, associating the negative transient segments with the positive transient segments if a plurality of matched negative transient segments exist, generating a load identification record for the matched positive transient segments and negative transient segments, and storing the associated time stamps of the positive transient segments and the negative transient segments.
6. The intelligent household system control method combined with electric energy scheduling of claim 5, wherein the power transient table comprises a plurality of values of rated positive transient power and a total number corresponding to the values, the rated positive transient power is an average power of a positive transient segment of the same class, and the classification process of the positive transient segment of the same class is as follows:
s801, counting the number of positive transient segments, the power of the positive transient segments and the power of the negative transient segments within a period of time T;
s802, sequencing the residual positive transient power, and classifying positive transient segments by an error range of 2%; during classification, positive transient segments and negative transient segments with power variation smaller than 1W need to be removed.
7. The intelligent home system control method combined with electric energy dispatching of claim 5, wherein the step S9 specifically comprises:
and when the number N of the rated positive transient power is greater than or equal to a set value N, whether the power of a negative transient segment paired with the rated positive transient power exists or not is judged within a set time length S, if yes, a load identification record is generated, and if not, a mark is not identified.
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| CN112311096A (en) * | 2020-11-03 | 2021-02-02 | 国网山东省电力公司青岛供电公司 | Two-way interactive regulation and control system based on HPLC communication and power load sensing technology |
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