CN111325360A - Power distribution network power failure management and control method - Google Patents
Power distribution network power failure management and control method Download PDFInfo
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Abstract
The invention relates to the technical field of electric power management and control, in particular to a power distribution network power failure management and control method, which comprises the following steps: step one, an electric power overhaul unit reports a power failure plan to an electric power company overhaul mode; step two, the maintenance mode of the power company is responsible for leading the power failure plan into a power distribution network plan maintenance control system; and step three, automatically analyzing the power failure plan from six dimensions by the power distribution network planned overhaul control system, allowing the power failure plan to pass by the system when the power failure plan conforms to any set rule in the six dimensions, executing the power failure plan by the power overhaul unit, and not allowing the power failure plan to pass by the system when the power failure plan conflicts with any set rule in the six dimensions. The invention can realize less power failure of the line, can stop multiple functions once, improves the reliability of power supply and reduces the complaint of customers.
Description
Technical Field
The invention relates to the technical field of power management and control, in particular to a power distribution network power failure management and control method.
Background
At present, the national power grid is managed and controlled by taking regions as units, and because transformer substations, distribution transformers and lines in each region are many, the problem often exists in the aspect of management and control:
firstly, the maintenance plan management precision is not high, the execution rate of the planned power failure is low, the planned power failure information is changed frequently, and the management of five zero time differences is not satisfied;
secondly, one-stop-and-multiple-use realization of comprehensive maintenance is difficult, because of more power failure range equipment, a large amount of data information of power failure equipment needs to be inquired in different systems manually, the workload is large, omission exists, the maintenance efficiency is not ideal, the voltage quality of partial transformer areas is poor, and the power failure duration of the transformer areas is too high;
thirdly, frequent power failure complaints are difficult to control, distribution network maintenance plan management does not have a one-key integrated report form which can show that important users, sensitive users and sensitive transformer areas are endangered by high power failure in a line power failure range, power failure risk pre-control measures are not performed carefully, and accurate service level is not high.
Therefore, a method for realizing few power failures and one-stop multi-purpose of a line, improving power supply reliability and reducing customer complaints by developing a distribution network maintenance plan optimal selection recommendation system is urgently needed.
Disclosure of Invention
In order to solve the technical problem, the invention provides a power failure management and control method for a power distribution network. The optimal selection recommendation system for the distribution network maintenance plan is developed to realize less power failure of lines, improve the power supply reliability and reduce customer complaints.
The invention discloses a power distribution network power failure management and control method which is characterized by comprising the following steps of:
step one, an electric power overhaul unit reports a power failure plan to an electric power company overhaul mode;
step two, the maintenance mode of the power company is responsible for leading the power failure plan into a power distribution network plan maintenance control system;
step three, the power distribution network planned overhaul control system automatically analyzes the power failure plan from six dimensions, when the power failure plan conforms to any set rule in the six dimensions, the system allows the power failure plan to pass, the power overhaul unit executes the power failure plan, and when the power failure plan conflicts with any set rule in the six dimensions, the system does not allow the power failure plan to pass;
step four, the maintenance mode of the power company is specially responsible for submitting the system in the step three to a power company production example meeting without allowing a maintenance power failure plan, when the power company production example determines that the power failure plan passes, and sends a power failure risk early warning to a power maintenance unit, the power maintenance unit executes the power failure plan, and when the power company production example determines that the power failure plan does not allow the power failure plan to pass, the power maintenance unit cannot execute the power failure plan;
and step five, carrying out plan adjustment on the power failure plan which does not allow the power distribution network planned overhaul management and control system in the step three and the power failure plan which does not allow the power company production case to pass softly in the step four.
Further, in step three, the rule of six dimensions is as follows:
firstly, analyzing a frequent power failure line: analyzing distribution lines with power failure times reaching 2 times or more in the distribution network in the last 2 months, and displaying lines and station area details exceeding the limited times;
secondly, analyzing a sensitive platform area: analyzing the occurrence of user complaints in the distribution network and reporting and repairing the distribution network for 3 times or more in 2 months, and displaying power failure plan early warning;
third, analysis of high-risk important subscriber lines: analyzing whether the power failure line has high risk to important users or not, and displaying power failure plan early warning;
fourth, low-voltage platform area analysis: analyzing a distribution area with the outlet voltage lower than 198V in the distribution network, and displaying power failure plan early warning;
fifth, heavy overload line analysis: analyzing a heavy-load platform area with the capacity-carrying rate of 80-100% of the interval range of the power failure area in the distribution network and an overload platform area with the capacity-carrying rate of more than 100%, and displaying power failure plan early warning;
sixthly, analyzing the three-phase unbalanced transformer area: and analyzing the data of the transformer area with the three-phase unbalance degree of more than 50% and the duration of more than 50%, and displaying the power failure plan early warning.
Further, the power failure risk early warning in the fourth step is a line and a station area with power failure times of 2 times or more in nearly two months, and power failure risk early warning is needed.
Compared with the prior art, the invention has the following advantages: the maintenance plan management precision is improved, the accurate service level is high, the power failure plan execution rate is improved, the frequency of power failure plan change is greatly reduced, and the existing management of five zero-time differences is met; the comprehensive maintenance one-stop multi-purpose maintenance flow is solidified, hidden dangers are timely managed, the average power failure time of each station area per year is reduced, and the failure rate of the station areas is reduced; the frequent power failure complaints are greatly reduced, the management and control of the frequent power failure complaints are simplified, important users, sensitive users and sensitive transformer areas are endangered by high power within the power failure range of the integrated display line, and the problem that power failure risk pre-control measures are not performed carefully is avoided; in addition, the comprehensive maintenance and the management and control of power failure complaints can greatly reduce the labor input, save time and labor.
Drawings
Fig. 1 is a power failure plan management and control business flow chart of a power distribution network power failure management and control method according to the present invention;
FIG. 2 is a diagram of an analysis interface of a frequent power outage line of the power distribution network power outage management and control method of the present invention;
FIG. 3 is a diagram of an analysis interface of a sensitive transformer area of the power distribution network power failure management and control method of the present invention;
FIG. 4 is an analysis interface diagram of a high-risk important subscriber line of the power distribution network power failure management and control method of the present invention;
FIG. 5 is a diagram of a low-voltage distribution grid analysis interface of the power distribution grid power outage management and control method of the present invention;
fig. 6 is a heavily overloaded line analysis interface diagram of the power distribution network power failure management and control method of the present invention;
fig. 7 is an analysis interface diagram of a three-phase unbalanced distribution area of the power distribution network power failure management and control method of the present invention;
fig. 8 is an interface diagram of six-dimensional analysis results for a power failure plan of the power distribution network power failure management and control method of the present invention;
fig. 9 is a graph showing a decrease in failure rate in 2019 and 2018 in comparison with the power failure management and control method for the power distribution network according to the embodiment of the invention;
fig. 10 is a 2019 complaint decline diagram of an embodiment of the power distribution network power failure management and control method according to the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The specific implementation manner of the invention takes the distribution network power failure management and control service of the state network Chenzhou power supply company as an example, and comprises the following steps:
as shown in fig. 1, a power distribution network power failure management and control method includes the following steps:
step one, an electric power overhaul unit reports a power failure plan to an electric power company overhaul mode;
step two, the maintenance mode of the power company is responsible for leading the power failure plan into a power distribution network plan maintenance control system;
step three, the power distribution network planned overhaul control system automatically analyzes the power failure plan from six dimensions, when the power failure plan conforms to any set rule in the six dimensions, the system allows the power failure plan to pass, the power overhaul unit executes the power failure plan, and when the power failure plan conflicts with any set rule in the six dimensions, the system does not allow the power failure plan to pass;
step four, the maintenance mode of the power company is specially responsible for submitting the system in the step three to a power company production example meeting without allowing a maintenance power failure plan, when the power company production example determines that the power failure plan passes, and sends a power failure risk early warning to a power maintenance unit, the power maintenance unit executes the power failure plan, and when the power company production example determines that the power failure plan does not allow the power failure plan to pass, the power maintenance unit cannot execute the power failure plan;
the power failure risk early warning in the fourth step is a line and a station area with power failure times of 2 times or more in nearly two months, and power failure risk early warning is needed;
and step five, carrying out plan adjustment on the power failure plan which does not allow the power distribution network planned overhaul management and control system in the step three and the power failure plan which does not allow the power company production case to pass softly in the step four.
In the third step, the rules of six dimensions are as follows:
firstly, analyzing a frequent power failure line: analyzing distribution lines with power failure times reaching 2 times or more in the distribution network in the last 2 months, and displaying lines with over-limit times and station area details, as shown in fig. 2;
secondly, analyzing a sensitive platform area: analyzing the occurrence of user complaints in the distribution network and reporting and repairing the distribution network for 3 times or more in 2 months, and displaying power failure plan early warning, as shown in fig. 3;
third, analysis of high-risk important subscriber lines: analyzing whether the power failure line has high risk important users or not, and displaying power failure plan early warning, as shown in fig. 4;
fourth, low-voltage platform area analysis: analyzing the distribution area with the outlet voltage lower than 198V in the distribution network, and displaying the power failure plan early warning, as shown in FIG. 5;
fifth, heavy overload line analysis: analyzing a heavy-load distribution area with the capacity-carrying rate of 80% -100% of the interval range of the power failure area in the distribution network and an overload distribution area with the capacity-carrying rate of more than 100%, and displaying power failure plan early warning, as shown in fig. 6;
sixthly, analyzing the three-phase unbalanced transformer area: and analyzing the data of the transformer area with the three-phase unbalance degree of more than 50% and the duration of more than 50%, and displaying the power failure plan early warning, as shown in fig. 7.
Aiming at the six-dimensional analysis result of the power failure plan: comprehensive factor analysis is performed on all monthly power failure plans from six dimensions, power failure mode arrangement is optimized, comprehensive factor analysis is performed on a single power failure plan from six dimensions, and power failure arrangement is optimized, as shown in fig. 8.
The implementation steps of the power grid power failure management and control in Chenzhou of the invention are as follows:
the first step is as follows: finishing the treatment of system lines, transformer areas and user basic data;
the second step is that: guiding distribution network power failure plan management and control by using the analysis result;
the third step: and rectifying the second stage exposure problem.
The implementation and construction effect of the power grid power failure management and control in Chenzhou of the invention is as follows: 1. once the multi-purpose overhaul process is stopped, the hidden danger is timely treated, the average power failure time of the transformer area in 2019 is reduced to 167 minutes compared with that in 2018, the fault rate of the transformer area is reduced by 31.9 percent, and the fault rate is shown in fig. 9; 2. the complaint control effect is remarkable, and after the project in 2 months in 2019 is implemented, the complaint frequently caused by power failure is reduced month by month, as shown in fig. 10; 3. the human resource cost is greatly reduced, the time for completing the weekly maintenance plan report is shortened by 2 working days, 7 data consulting and analyzing personnel are reduced in the whole market, and the human resource cost is saved by 105 ten thousand per year.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The power distribution network power failure management and control method is characterized by comprising the following steps:
step one, an electric power overhaul unit reports a power failure plan to an electric power company overhaul mode;
step two, the maintenance mode of the power company is responsible for leading the power failure plan into a power distribution network plan maintenance control system;
step three, the power distribution network planned overhaul control system automatically analyzes the power failure plan from six dimensions, when the power failure plan conforms to any set rule in the six dimensions, the system allows the power failure plan to pass, the power overhaul unit executes the power failure plan, and when the power failure plan conflicts with any set rule in the six dimensions, the system does not allow the power failure plan to pass;
step four, the maintenance mode of the power company is specially responsible for submitting the system in the step three to a power company production example meeting without allowing a maintenance power failure plan, when the power company production example determines that the power failure plan passes, and sends a power failure risk early warning to a power maintenance unit, the power maintenance unit executes the power failure plan, and when the power company production example determines that the power failure plan does not allow the power failure plan to pass, the power maintenance unit cannot execute the power failure plan;
and step five, carrying out plan adjustment on the power failure plan which does not allow the power distribution network planned overhaul management and control system in the step three and the power failure plan which does not allow the power company production case to pass softly in the step four.
2. The method according to claim 1, wherein in step three, the rules of six dimensions are as follows:
firstly, analyzing a frequent power failure line: analyzing distribution lines with power failure times reaching 2 times or more in the distribution network in the last 2 months, and displaying lines and station area details exceeding the limited times;
secondly, analyzing a sensitive platform area: analyzing the occurrence of user complaints in the distribution network and reporting and repairing the distribution network for 3 times or more in 2 months, and displaying power failure plan early warning;
third, analysis of high-risk important subscriber lines: analyzing whether the power failure line has high risk to important users or not, and displaying power failure plan early warning;
fourth, low-voltage platform area analysis: analyzing a distribution area with the outlet voltage lower than 198V in the distribution network, and displaying power failure plan early warning;
fifth, heavy overload line analysis: analyzing a heavy-load platform area with the capacity-carrying rate of 80-100% of the interval range of the power failure area in the distribution network and an overload platform area with the capacity-carrying rate of more than 100%, and displaying power failure plan early warning;
sixthly, analyzing the three-phase unbalanced transformer area: and analyzing the data of the transformer area with the three-phase unbalance degree of more than 50% and the duration of more than 50%, and displaying the power failure plan early warning.
3. The power distribution network power failure management and control method according to claim 1, characterized in that: and the power failure risk early warning in the fourth step is the line and the station area with the power failure frequency of 2 times or more in nearly two months, and the power failure risk early warning is needed.
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