Heavy overload condition evaluation method of power distribution network line
A line overload and heavy overload technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of no differentiation, heavy overload of distribution network lines without considering the severity and continuity, and improve pertinence Effect
Active Publication Date: 2020-03-13
SHENZHEN POWER SUPPLY BUREAU
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Problems solved by technology
[0009] The technical problem to be solved by the embodiments of the present invention is to provide a method for evaluating the heavy overload situation of distribution network lines, and to solve the problem that the severity and continuity are not considered when comprehensively evaluating the heavy overload problem of distribution network lines, and the problem of differentiation is not realized
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[0067] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0068] like figure 1 As shown, it is a schematic diagram of the main flow of an embodiment of the method for evaluating the heavy overload situation of distribution network lines provided by the present invention. In this embodiment, the method includes the following steps:
[0069] Step S1, determining parameter information related to evaluation;
[0070] In a specific embodiment, the parameter information related to the evaluation specifically includes:
[0071] Line load rate β (i) , refers to the ratio of the actual value of the line transmission power or current to the rated value;
[0072] Line overload alarm load rate β z , which means that the power or current transmitted by the line has exceeded the overload alarm value, and attention or optimization ...
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The invention discloses a heavy overload condition evaluation method of a power distribution network line. The method comprises the following steps: S1, determining parameter information related to evaluation; S2, acquiring basic data information through a management system; S3, evaluating the heavy overload condition of the power distribution network line; S4, determining the priority of the heavy overload problem of the power distribution network line; and S5, evaluating the heavy overload condition of the regional power distribution network. By implementing the method, the overload problemcaused by short-time load fluctuation factors and the overload problem existing for a long time and occurring at high frequency are distinguished, and the problem solving and processing pertinence isimproved; the evaluation result of the macroscopic overall operation level of the regional power grid is obtained, specific heavy overload problem optimization suggestions of the distribution networkline are also obtained, and the decision reference requirements of decision makers of different levels are met. The problem processing priority is revealed, the practical operability of the evaluationresult is improved, and the conversion of the evaluation result is facilitated.
Description
technical field [0001] The invention belongs to the field of electric network evaluation, and relates to a method for evaluating heavy and overload situations of distribution network lines. Background technique [0002] The heavy overload of the distribution network line means that the power of the line is close to or exceeds the maximum power allowed by the equipment. Overload operation of distribution network lines may lead to reduced operating life, damage, or even fire and burnt down of related equipment, which will affect the safe operation of distribution network and user power supply, and must be dealt with immediately. [0003] After the distribution network line is overloaded, the load is often controlled by temporarily shifting the load or peak-shifting power cut, which may cause temporary power outages for users. The overload problem of some distribution network lines can only be completely solved by power grid transformation or new lines, and the longer duration...
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IPC IPC(8): G01R31/08
CPCG01R31/086G01R31/088
Inventor 刘晟梁誉锵李扬王一超张晁
Owner SHENZHEN POWER SUPPLY BUREAU