CN106451791B - Power supply and outage information detection method and system - Google Patents
Power supply and outage information detection method and system Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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Abstract
The invention relates to a power supply and outage information detection method and a system, wherein the power supply and outage information detection method comprises the following steps: reading the power supply and outage state of a distribution transformer area client from electric energy terminal equipment corresponding to a distribution transformer at intervals of set time; wherein the power supply and power off state comprises a power supply state and a power off state; if the currently read power supply and power off state is different from the last read power supply and power off state, recording a first reading moment of currently reading the power supply and power off state and a second reading moment of last reading the power supply and power off state; if the current power supply and outage state is the power outage state, determining the intermediate value between the first reading moment and the second reading moment as the power outage moment; and if the current power supply and outage state is the power supply state, determining the intermediate value of the first reading moment and the second reading moment as the power supply restoration moment. The power supply information of the distribution transformer area customer can be efficiently and accurately detected.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a power supply and outage information detection method and system.
Background
At present, customer electricity information management based on power supply reliability is only popularized to medium-voltage users, and user electricity data collection mainly depends on electric energy terminal equipment such as an electric energy collection terminal installed on a 10kV distribution transformer, namely, each distribution transformer (distribution transformer) is used as a user to manage electricity information. However, for a distribution transformer with a wider power supply range, such as a public distribution transformer with a power supply range of hundreds of low-voltage customers, the corresponding electric energy terminal equipment cannot timely and accurately output the operation state of the low-voltage distribution network and the power consumption situation of the low-voltage customers, and the actual power consumption situation can be known only by analyzing the operation data in the multifunctional electronic electric energy meter installed by the low-voltage customers.
Particularly, in the case of voltage sag, the voltage sag occurs for a short time, and therefore, power failure is not included in customer power management based on power supply reliability, and power supply capability of a power distribution network is not affected. Even if the power supply is recovered to be normal, power supply enterprises often need to wait until customers complain to obtain accurate power supply information such as power failure accidents, and at the moment, the power supply information is low in obtaining efficiency.
Disclosure of Invention
Therefore, it is necessary to provide a power supply and outage information detection method and system for the technical problem that the acquisition efficiency of related power supply information is low due to the fact that a distribution transformer with a wide power supply range and corresponding electric energy terminal equipment cannot accurately output the running state of a low-voltage distribution network and the power consumption condition of a low-voltage customer.
A power supply and outage information detection method comprises the following steps:
reading the power supply and outage state of a distribution transformer area client from electric energy terminal equipment corresponding to a distribution transformer at intervals of set time; wherein the power supply and power off state comprises a power supply state and a power off state;
if the currently read power supply and power off state is different from the last read power supply and power off state, recording a first reading moment of currently reading the power supply and power off state and a second reading moment of last reading the power supply and power off state;
if the current power supply and outage state is the power outage state, determining the intermediate value between the first reading moment and the second reading moment as the power outage moment; and if the current power supply and outage state is the power supply state, determining the intermediate value of the first reading moment and the second reading moment as the power supply restoration moment.
If the currently read power supply and outage state is different from the last read power supply and outage state, and the current power supply and outage state is the power supply state, recording a first reading moment of currently reading the power supply and outage state and a second reading moment of last reading the power supply and outage state;
and determining the intermediate value of the first reading moment and the second reading moment as the moment of restoring the power supply.
A power outage information detection system comprising:
the reading module is used for reading the power supply and outage state of a distribution transformer area customer from electric energy terminal equipment corresponding to a distribution transformer at set time intervals; wherein the power supply and power off state comprises a power supply state and a power off state;
the recording module is used for recording a first reading moment of currently reading the power supply and outage state and a second reading moment of last reading the power supply and outage state if the currently read power supply and outage state is different from the last read power supply and outage state;
the determining module is used for determining the intermediate value between the first reading moment and the second reading moment as the power-off moment if the current power supply and power-off state is the power-off state and the current power supply and power-off state is the power-off state; and if the current power supply and outage state is the power supply state, determining the intermediate value of the first reading moment and the second reading moment as the power supply restoration moment.
According to the power supply and outage information detection method and system, the power supply and outage state of the distribution transformer area client can be read from the electric energy terminal equipment corresponding to the distribution transformer every set time, when the currently read power supply and outage state is different from the last read power supply and outage state, the corresponding power outage time or power supply restoration time can be determined according to the current power supply and outage state, the first reading time of the current power supply and outage state and the second reading time of the last power supply and outage state, and the power supply information such as the power outage time or power supply restoration time of the distribution transformer area client can be efficiently and accurately detected.
Drawings
FIG. 1 is a flow chart of a method for detecting power outage information according to an embodiment;
FIG. 2 is a schematic diagram of outage event operational data according to one embodiment;
FIG. 3 is a schematic diagram of a power supply detection system of an embodiment of a power system;
fig. 4 is a schematic structural diagram of a power supply interruption information detection system according to an embodiment.
Detailed Description
The following describes in detail a specific embodiment of the power supply/outage information detection method and system according to the present invention with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a flowchart illustrating a power supply outage information detection method according to an embodiment, including the following steps:
s10, reading the power supply and outage state of the distribution transformer area customer from the electric energy terminal equipment corresponding to the distribution transformer every set time length; wherein the power supply and power off state comprises a power supply state and a power off state;
the distribution transformer comprises a public distribution transformer and a special distribution transformer, under the normal condition, electric energy terminal equipment for acquiring power supply information such as power supply and outage records, voltage, current data, power supply and outage states and the like of a client in a transformer area of the public distribution transformer is a low-voltage centralized meter reading system, and electric energy terminal equipment for acquiring power supply information such as power supply and outage records, voltage, current data, power supply and outage states and the like of the client in the transformer area of the special distribution transformer is an electric energy acquisition terminal. The electric energy terminal equipment corresponding to the distribution transformer can collect the power supply information such as the voltage, the current, the power supply state, the power failure event and the like of the electronic electric energy meter of the client. As shown in fig. 2, the power supply and outage information detection system control module 54 issues a call command to the electric energy terminal device (the electric energy collection terminal 51 of the special transformer customer and/or the low voltage centralized meter reading system 52 of the public transformer customer) at set time intervals (for example, time intervals of 15min, 20min, and the like) through the communication module 53, collects power supply information such as power supply and outage records, voltage, current data, power supply and outage states, and the like of the electric energy terminal device, and then sends the collected power supply information to the storage module 55 for storage. The set time duration may include time durations of 15min (minutes), 20min and the like, for example, the system master station control module reads the power supply and outage state of the distribution transformer area customer from the electric energy terminal device corresponding to the distribution transformer every 15 min.
S20, if the current power supply and outage state is different from the last power supply and outage state, recording a first reading time of the current power supply and outage state and a second reading time of the last power supply and outage state;
s30, if the current power supply and outage state is the power outage state, determining the intermediate value between the first reading moment and the second reading moment as the power outage moment; and if the current power supply and outage state is the power supply state, determining the intermediate value of the first reading moment and the second reading moment as the power supply restoration moment.
If the currently read power supply and power off state is different from the last read power supply and power off state, that is, the power supply state between the current reading time (the first reading time) and the last reading time (the second reading time) changes, for example, the power supply state changes to the power off state or changes from the power off state to the power supply state, and the specific time when the power supply state changes cannot be directly read from the electrical energy terminal device corresponding to the distribution transformer, the first reading time when the current reading of the power supply and power off state is performed and the second reading time when the last reading of the power supply and power off state is performed may be obtained first, where the second reading time is the last reading time of the first reading time, and the two reading times are separated by a set time length and are adjacent reading times, for example, if the current reading of the power supply and power off state is 9:15, when the time of last reading of the power supply and power off state is 9:00, the first reading time is 9:15 and the second reading time is 9:00, and the middle value of the first reading time and the second reading time is 9:07 or 9:08, the 9:07 or 9:08 can be determined as the corresponding power off time, so that a related user can timely and accurately acquire the power supply information.
The power supply and outage information detection method provided by this embodiment can read the power supply and outage state of a distribution transformer area client from an electric energy terminal device corresponding to the distribution transformer every set time length, and can determine the corresponding power outage time or power supply restoration time according to the current power supply and outage state, the first reading time of the current power supply and outage state, and the second reading time of the last power supply and outage state, when the current power supply and outage state is different from the last power supply and outage state, so that power supply information such as the power outage time or power supply restoration time of the distribution transformer area client can be efficiently and accurately detected.
In one embodiment, after the currently read power supply and power off state is different from the last read power supply and power off state, the method further includes:
recording a first reading moment of reading the power supply and power off state at present and a second reading moment of reading the power supply and power off state last time;
acquiring a power supply plan from the first reading moment to the second reading moment from a pre-stored power supply schedule;
if the power supply and outage state is recorded to be changed in the power supply plan, further reading a first change time for changing the power supply and outage state from the power supply plan table, and outputting the first change time and power supply change contents corresponding to the first change time;
and if the power supply and outage state is not recorded to be changed in the power supply plan, recording a first reading moment of currently reading the power supply and outage state and a second reading moment of last reading the power supply and outage state.
In this embodiment, if the power supply and outage state in the power supply schedule is the same as the current power supply and outage state, outputting the content corresponding to the power supply schedule; and if the power supply and outage state in the power supply schedule is different from the current power supply and outage state, communicating with the marketing management information system through the communication module, and sending a fault and outage warning.
As an embodiment, after the step of reading a first change time of changing the power supply/shutdown state from the power supply schedule table and outputting the first change time and a power supply change content corresponding to the first change time, the method further includes:
and detecting the power supply state between the first change time and the second change time from the second change time when the power supply and cut-off state is changed next time in the power supply schedule.
In one embodiment, if the currently read power supply and power off state is different from the last read power supply and power off state, after a process of recording a first reading time when the currently read power supply and power off state is read and a second reading time when the last read power supply and power off state is read, the method further includes:
detecting whether the power supply and outage state change time point between the first reading time and the second reading time is recorded in the electric energy terminal equipment; the power supply and power failure state change time point is a power failure time point or a power supply recovery time point;
and if so, determining the power supply and outage state change time point as the power outage time or the power restoration time.
If not, determining the intermediate value of the first reading moment and the second reading moment as the power-off moment if the current power supply and power-off state is the power-off state; and if the current power supply and outage state is a power supply state, determining a middle value of the first reading moment and the second reading moment as a power supply restoration moment.
In this embodiment, if the electric energy terminal device records the power-off time point between the first reading time and the second reading time, the recorded power-off time point may be used as the power-off time to improve the determination efficiency of the power-off time, and if the electric energy terminal device cannot directly read the electric energy terminal device, an alarm may be given in a manner of whistling or the like, and if the current power supply/off state is the power-off state, a median between the first reading time and the second reading time is determined as the power-off time; and if the current power supply and outage state is a power supply state, determining the intermediate value between the first reading moment and the second reading moment as a power supply restoration moment so as to ensure timely acquisition of corresponding power supply information on the basis of informing corresponding staff.
As an embodiment, the current value of the electronic energy meter of the distribution transformer area customer may be obtained by obtaining an electric energy terminal device corresponding to the distribution transformer, and the power supply/outage state of the distribution transformer area customer is really corresponded by judging the relationship between the current value and the power outage judgment threshold (power outage judgment threshold), for example, if the current value is smaller than a preset power outage judgment threshold, the current power supply/outage state is judged to be the power outage state, and if the current value is greater than or equal to the preset power outage judgment threshold, the current power supply/outage state is judged to be the power supply state.
In an embodiment, after the step of determining the intermediate value between the first reading time and the second reading time as the power-off time if the current power-off state is the power-off state, the method further includes:
when the power supply and outage state of a distribution transformer area client is read to be a power supply state in the electric energy terminal equipment, recording a third reading moment;
and determining the power-off duration according to the third reading moment and the power-off moment.
The embodiment can also determine the power-off duration through the third reading time and the power-off time, so that the detected power supply information is further improved.
As an embodiment, the determining the power-off time duration according to the third reading time and the power-off time includes:
detecting whether the power supply time point between the last reading time and the third reading time of the third reading time is recorded in the electric energy terminal equipment;
if so, determining the power supply time point as the power supply restoration time, and determining the power failure duration according to the difference between the power supply restoration time and the power failure time.
The embodiment can directly read the power supply time point from the electric energy terminal equipment so as to determine the corresponding power-off duration, has higher efficiency,
as an embodiment, after the process of detecting whether the power supply time point between the last reading time of the third reading time and the third reading time is recorded by the power terminal device, the method further includes:
if the power supply time point between the last reading time and the third reading time of the third reading time is not recorded by the electric energy terminal equipment;
determining the middle value between the last reading time and the third reading time of the third reading time as the power supply restoration time, and determining the power failure duration according to the difference between the power supply restoration time and the power failure time.
In this embodiment, the intermediate value between the last reading time of the third reading time and the third reading time is determined as the power supply restoration time, so that the power supply information that cannot be directly read can be further improved.
In one embodiment, the process of reading the power supply and outage state of the distribution transformer station area customer from the corresponding electric energy terminal device of the distribution transformer comprises the following steps:
the method comprises the steps of obtaining a current value of electric energy terminal equipment corresponding to a distribution transformer, judging that the current power supply and outage state is a power outage state if the current value is smaller than a preset power outage judgment threshold value, and judging that the current power supply and outage state is a power supply state if the current value is larger than or equal to the preset power outage judgment threshold value.
As an embodiment, before the step of reading the power supply and outage state of the distribution transformer area customer from the electric energy terminal device corresponding to the distribution transformer at set time intervals, the method further includes:
acquiring the minimum load current of the distribution transformer area client in each unit period in a set period, and substituting the minimum load current of the unit period into a power failure judgment threshold value calculation formula to calculate a power failure judgment threshold value; wherein, the power failure judgment threshold value calculation formula is as follows:
in the formula IzdTo determine the threshold for power failure, KdIn order to be the load operation state coefficient,
is the minimum load current in the ith cycle, N is the total cycle number, and the sign-is the multiplication.
The unit period may be 1 day, that is, 1 day is 1 cycle unit, and the set period may be 7 days, which includes 7 unit periods, where the total cycle number is 7, that is, N is 7.
In this embodiment, when the minimum load current is 0 in the last seven days, the load operation state coefficient K is determineddAnd the sensitivity of the power failure judgment threshold value is ensured to be 0.
The power supply and outage information detection method provided by the invention fully utilizes the existing data acquisition means, integrates the power consumption data of customers, designs the power supply and outage information detection method on the basis of a metering automation system, improves the power supply and outage judgment logic, perfects the function of the power supply and outage information detection method, deeply analyzes the power consumption condition of the customers, records the power outage time, and improves the processing speed of power outage events.
Aiming at the situation that the records of the power supply and power off events of the electric energy meter and the electric energy acquisition terminal can not be accurately sent out due to various reasons in the practical operation, the system reads data once every set time (such as 15min) and judges the power supply and power off states of the customers once. If the current power supply and outage state is different from the last power supply and outage state, recording a first reading moment of the current power supply and outage state and a second reading moment of the last power supply and outage state, and if the current power supply and outage state is the power outage state, determining a middle value of the first reading moment and the second reading moment as the power outage moment; and if the current power supply and outage state is the power supply state, determining the intermediate value of the first reading moment and the second reading moment as the power supply restoration moment. If the currently read power supply and outage state is different from the last read power supply and outage state, and the current power supply and outage state is the power supply state, recording a first reading moment of currently reading the power supply and outage state, and a second reading moment of last reading the power supply and outage state, and determining a middle value of the first reading moment and the second reading moment as a power supply restoration moment.
As shown in fig. 3, when a public industrial user runs data in a power failure event, the communication module sends a test calling command to a corresponding electric energy terminal device (a low-voltage centralized meter reading system and/or an electric energy acquisition terminal) every 15min, reads the running data once, and uploads the running data to the system control module for judgment.
A voltage sag event occurs when the distribution network where the factory is located is at 3:37, and the low-voltage release of the factory acts to cause the circuit breaker to trip and power off. Because the voltage sag duration is extremely short, the voltage rapidly recovers to a normal level, and the power acquisition terminal installed on the public transformer does not generate power failure records due to the arrangement of voltage jitter prevention. Although the electric energy meter of the client generates the stop record and uploads the stop record to the metering automation master station through the low-voltage meter reading system, the function of the master station is incomplete, and the master station is only used for recording data and does not give an alarm to the staff of a power supply enterprise in time. Until the customer complaints in the morning, the power supply enterprise can not know the power failure event of the customer and arrange the staff for inspection and maintenance. And (5) recovering normal power supply of the 10:51 factory, and recording current data of the electric energy meter of the factory by the 11:00 metering automation system. The duration of the whole power failure event exceeds 7 hours, wherein the normal production time is delayed by about 3 hours, so that huge economic loss is caused to customers, and the statistical result after the fact is shown in table 1.
TABLE 1 statistics table for power failure loss of certain client
| Power failure response method | Total length of power cut | Production line output value | Loss of yield (3 hours delay for normal production) |
| Tradition of | 7.25h | 10.46 ten thousand/h | 31.38 ten thousand |
| Considering the reliability of electricity utilization | 0.5h | 10.46 ten thousand/ |
0 ten thousand |
The invention relates to a power supply and outage information detection method and a power supply and outage information detection system, which are designed on the basis of the existing metering automation system, the power supply and outage information detection system with more complete functions is retested according to historical data, after a power outage event occurs in a client 3:37, a master station control module can quickly judge the power outage event according to the fact that the current data of an electric energy meter of the client is 0 and the record of the power outage event of the electric energy meter is carried out according to the fact that the current data of the electric energy meter of the client is 0 in a ratio of 3:45, after a system communication module carries out data interaction with a background production management information system and a marketing management information system, the system control module can confirm that the event is a fault power outage, timely send an alarm and an emergency repair work order. After the power supply of the client is recovered, the system control module can judge the incoming time according to the current data uploaded by the client electric energy meter, so that the power failure event is completely recorded, and important data is provided for subsequent client power utilization information management work. By adopting the power supply and outage information detection system, the power outage time of a client can be shortened by 6.75h, and the output value loss is reduced by 31.38 ten thousand.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a power supply outage information detection system according to an embodiment, including:
the reading module 10 is used for reading the power supply and outage state of a distribution transformer area customer from the electric energy terminal equipment corresponding to the distribution transformer every set time length; wherein the power supply and power off state comprises a power supply state and a power off state;
the recording module 20 is configured to record a first reading time when the power supply and outage state is currently read and a second reading time when the power supply and outage state is read last time if the currently read power supply and outage state is different from the last read power supply and outage state;
the determining module 30 is configured to determine, if the current power supply and outage state is the power outage state, a middle value between the first reading time and the second reading time as the power outage time; and if the current power supply and outage state is the power supply state, determining the intermediate value of the first reading moment and the second reading moment as the power supply restoration moment.
The power supply and outage information detection system provided by the invention corresponds to the power supply and outage information detection method provided by the invention one to one, and the technical characteristics and the beneficial effects described in the embodiment of the power supply and outage information detection method are applicable to the embodiment of the power supply and outage information detection system, so that the statement is made.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A power supply and outage information detection method is characterized by comprising the following steps:
reading the power supply and outage state of a distribution transformer area client from electric energy terminal equipment corresponding to a distribution transformer at intervals of set time; wherein the power supply and power off state comprises a power supply state and a power off state;
if the currently read power supply and power off state is different from the last read power supply and power off state, recording a first reading moment of currently reading the power supply and power off state and a second reading moment of last reading the power supply and power off state;
if the current power supply and outage state is the power outage state, determining the intermediate value between the first reading moment and the second reading moment as the power outage moment; if the current power supply and outage state is a power supply state, determining a middle value of the first reading moment and the second reading moment as a power supply restoration moment; acquiring a power supply plan from the first reading moment to the second reading moment from a pre-stored power supply schedule; if the power supply and outage state is recorded to be changed in the power supply plan, further reading a first change time for changing the power supply and outage state from the power supply plan table, and outputting the first change time and power supply change contents corresponding to the first change time; if the power supply and outage state is not recorded to be changed in the power supply plan, a step of recording a first reading moment of currently reading the power supply and outage state and a second reading moment of last reading the power supply and outage state is executed;
the process of reading the power supply and outage state of the distribution transformer station area customer from the electric energy terminal equipment corresponding to the distribution transformer comprises the following steps:
acquiring a current value of electric energy terminal equipment corresponding to a distribution transformer, if the current value is smaller than a preset power-off judgment threshold value, judging that the current power supply and power-off state is a power-off state, and if the current value is larger than or equal to the preset power-off judgment threshold value, judging that the current power supply and power-off state is a power supply state;
the method comprises the following steps of reading the power supply and outage state of a distribution transformer area customer from electric energy terminal equipment corresponding to a distribution transformer at set time intervals, wherein the method comprises the following steps:
acquiring the minimum load current of the distribution transformer in each unit period in a set period, and substituting the minimum load current of the unit period into a power failure judgment threshold value calculation formula to calculate a power failure judgment threshold value; wherein, the power failure judgment threshold value calculation formula is as follows:
in the formula IzdTo determine the threshold for power failure, KdIn order to be the load operation state coefficient,
is the minimum load current in the ith cycle, N is the total cycle number, and the sign-is the multiplication.
2. The power supply/outage information detection method according to claim 1, wherein if it is recorded in the power supply schedule that the power supply/outage state changes, after the step of further reading a first change time at which the power supply/outage state changes from the power supply schedule and outputting power supply change contents corresponding to the first change time and the first change time, the method further comprises:
and detecting the power supply state between the first change time and the second change time from the second change time when the power supply and cut-off state is changed next time in the power supply schedule.
3. The power supply and outage information detection method according to claim 1, wherein, if the currently read power supply and outage state is different from the last read power supply and outage state, recording a first reading time when the currently read power supply and outage state is read, and after a process of reading a second reading time when the last read power supply and outage state is read, further comprising:
detecting whether the power supply and outage state change time point between the first reading time and the second reading time is recorded in the electric energy terminal equipment;
if so, determining the power supply and outage state change time point as the power outage time or the power restoration time;
if not, determining the intermediate value of the first reading moment and the second reading moment as the power-off moment if the current power supply and power-off state is the power-off state; and if the current power supply and outage state is a power supply state, determining a middle value of the first reading moment and the second reading moment as a power supply restoration moment.
4. The power supply and outage information detection method according to claim 1, wherein after the step of determining the intermediate value between the first reading time and the second reading time as the power outage time if the current power supply and outage state is the power outage state, the method further comprises:
when the power supply and outage state of a distribution transformer area client is read to be a power supply state in the electric energy terminal equipment, recording a third reading moment;
and determining the power-off duration according to the third reading moment and the power-off moment.
5. The power supply and outage information detection method according to claim 4, wherein the process of determining the duration of the outage time according to the third reading time and the outage time comprises:
detecting whether the power supply time point between the last reading time and the third reading time of the third reading time is recorded in the electric energy terminal equipment;
if so, determining the power supply time point as the power supply restoration time, and determining the power failure duration according to the difference between the power supply restoration time and the power failure time.
6. The power supply interruption information detection method according to claim 5, wherein after the process of detecting whether the power terminal device records a power supply time point between a last reading time of the third reading time and the third reading time, the method further comprises:
if the power supply time point between the last reading time and the third reading time of the third reading time is not recorded by the electric energy terminal equipment;
determining the middle value between the last reading time and the third reading time of the third reading time as the power supply time, and determining the power-off duration according to the difference between the power supply time and the power-off time.
7. A power outage information detection system, comprising:
the reading module is used for reading the power supply and outage state of the distribution transformer from the electric energy terminal equipment corresponding to the distribution transformer at intervals of set time; wherein the power supply and power off state comprises a power supply state and a power off state;
the recording module is used for recording a first reading moment of currently reading the power supply and outage state and a second reading moment of last reading the power supply and outage state if the currently read power supply and outage state is different from the last read power supply and outage state;
the determining module is used for determining a middle value between the first reading moment and the second reading moment as a power-off moment if the current power supply and power-off state is the power-off state; if the current power supply and outage state is a power supply state, determining a middle value of the first reading moment and the second reading moment as a power supply restoration moment; acquiring a power supply plan from the first reading moment to the second reading moment from a pre-stored power supply schedule; if the power supply and outage state is recorded to be changed in the power supply plan, further reading a first change time for changing the power supply and outage state from the power supply plan table, and outputting the first change time and power supply change contents corresponding to the first change time; if the power supply and outage state is not recorded to be changed in the power supply plan, a step of recording a first reading moment of currently reading the power supply and outage state and a second reading moment of last reading the power supply and outage state is executed;
the process of reading the power supply and outage state of the distribution transformer station area customer from the electric energy terminal equipment corresponding to the distribution transformer comprises the following steps:
acquiring a current value of electric energy terminal equipment corresponding to a distribution transformer, if the current value is smaller than a preset power-off judgment threshold value, judging that the current power supply and power-off state is a power-off state, and if the current value is larger than or equal to the preset power-off judgment threshold value, judging that the current power supply and power-off state is a power supply state;
the method comprises the following steps of reading the power supply and outage state of a distribution transformer area customer from electric energy terminal equipment corresponding to a distribution transformer at set time intervals, wherein the method comprises the following steps:
acquiring the minimum load current of the distribution transformer in each unit period in a set period, and substituting the minimum load current of the unit period into a power failure judgment threshold value calculation formula to calculate a power failure judgment threshold value; wherein, the power failure judgment threshold value calculation formula is as follows:
in the formula IzdTo determine the threshold for power failure, KdIn order to be the load operation state coefficient,
is the minimum load current in the ith cycle, N is the total cycle number, and the sign-is the multiplication.
8. The power supply interruption information detection system according to claim 7, wherein the determination module is further configured to, if it is recorded in the power supply plan that the power supply interruption state changes, further read a first change time at which the power supply interruption state is changed from the power supply schedule, and after outputting the first change time and a power supply change content corresponding to the first change time, detect the power supply state between the first change time and a second change time at which the power supply interruption state is changed next time from the power supply schedule.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 6 are implemented when the computer program is executed by the processor.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.
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