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Distribution network load change alarm method
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A distribution network and load technology, applied in the direction of electrical components, circuit devices, information technology support systems, etc., can solve problems such as distribution network load changes, failure to deal with circuit failures in time, and affect users' daily life, so as to achieve the effect of improving work efficiency
Active Publication Date: 2019-05-10
ILI POWER SUPPLY COMPANY SATE GRID XINJIANG ELECTRIC POWER +1
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[0004] The present invention provides a distribution network load abnormality alarm method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the distribution network branch lines, circuit breakers, isolating switch faults or abnormalities in the prior art. Network load changes cannot be monitored in real time, resulting in failure to deal with circuit failures in time, which seriously affects the daily life of users
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Embodiment 1
[0030] Embodiment 1: as attached figure 1 As shown, the distribution network load abnormality warning method includes the following steps:
[0031] The first step is to extract the load data of each distribution network line in the main network database according to the OPEN3000 main network control system;
[0032] The second step is to compile the distribution network load abnormality judgment module on the basis of OPEN3000 main network control system, and carry out real-time monitoring and data comparison on the distribution network line load;
[0033] The third step is to calculate t 1 and t 2 The load P of the monitored distribution network line at all times (t 1 ) and P(t 2 ), the calculation formula of distribution line load change rate§ is as follows:
[0034] §=[P(t 2 ) / P(t 1 )-1]×100%
[0035] where P(t 1 ) is the load value of a distribution network line at a certain moment, P(t 2 ) is the load value of a distribution network line after ᇫt time;
[0036]...
Embodiment 2
[0052] Embodiment 2: as figure 1 As shown, to determine whether there is a load change in the 110 kV western suburbs substation to 10 kV Xinhua West line: within a certain period of time, the load of the Xinhua West line has dropped from 3.7 MW to 2.6 MW at the initial moment, and the calculation formula is:
[0053] §=[(2.6 / 3.7)-1]*100%=-29.73%,
[0054]Because §<-20%, it is determined that there is a load change on the line at this time, and there may be a fault on the line, which requires real-time attention and processing by relevant operation and maintenance personnel. The normal change rate K of the line load is the limit value, generally 20%. The limit value K=20% is an empirical value (normal line load fluctuation is very small), that is, the sudden drop of the general distribution network line load by more than 20% is considered to be a load change, and the line is faulty.
[0055] In actual work, the load of a distribution network line at a certain initial moment i...
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Abstract
The present invention relates to the technical field of electric power system monitoring, and is a distribution network load abnormality alarm method, comprising the following steps: the first step is to extract the load data of each distribution network line in the main network database; the second step is to compile a distribution network load abnormality determination module ; The third step, calculate t 1 and t 2 Load P(t 1 ) and P(t 2 ); the fourth step is to determine whether the load change rate exceeds the limit value K; the fifth step is to trigger a real-time alarm according to the determination condition; the sixth step is to notify the operation and maintenance personnel of the station area to carry out maintenance in time during the power outage. The present invention compiles the distribution network load abnormality determination module on the basis of the OPEN3000 main network control system, realizes the automatic search and determination of the distribution network load abnormality circuit, and realizes the distribution network load caused by the failure or abnormality of each distribution network branch line, circuit breaker, and isolating switch. Real-time and effective monitoring of abnormal conditions effectively improves work efficiency.
Description
technical field [0001] The invention relates to the technical field of electric power system monitoring, and relates to a method for alarming changes in distribution network loads. Background technique [0002] At present, the Xinjiang distribution network dispatching operation command platform is still in and will be in the construction stage for a long time. The construction of the main station of the distribution network automation system is in the initial stage of the pilot project, and the distribution automation points are large and involve a wide range of areas. The construction cycle and investment are long and the investment is low, and the investment-benefit ratio is low only relying on the real-time data collection of the distribution terminal. The distribution network emergency repair command platform based on the unified construction of the PMS platform is currently in the trial operation stage of work order circulation. The application functions of distribution...
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Application Information
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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCH02J13/00007Y04S40/121Y02E60/00
Inventor 陈久奇石小帅候鹏倪贵兵倪勇周俐君
Owner ILI POWER SUPPLY COMPANY SATE GRID XINJIANG ELECTRIC POWER
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