Value evaluation method and system for direct current distribution network control and protection device
A value assessment and system benefit technology, applied in information technology support systems, instruments, data processing applications, etc., can solve problems such as equipment investment costs, equipment scrap costs, equipment value assessment errors, etc., and improve the level of asset lean management. 、Equipment value evaluation fine effect
Pending Publication Date: 2021-12-31
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology
[0005] This application provides a value evaluation method and system for a DC distribution network control and protection device, which is used to solve the technical problem that the existing technology does not fully consider factors such as equipment investment costs and equipment scrap costs, resulting in large errors in equipment value evaluation
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Embodiment 1
[0107] The above is the first embodiment of the value evaluation method of a DC distribution network control and protection device provided in the embodiment of this application, and the following is an embodiment of the value evaluation method of a DC distribution network control and protection device provided in the embodiment of this application two.
[0108] see image 3 , a method for evaluating the value of a DC distribution network control and protection device provided in Embodiment 2 of the present application, including:
[0109] Step 201, collecting historical operation and maintenance cost data of the control and protection device at different stages;
[0110] Step 202: Acquire the first series of operation and maintenance costs from the first use to the first overhaul of the control and maintenance device according to the historical operation and maintenance cost data, and the second series of operation and maintenance costs from the first overhaul to the second ...
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The invention discloses a value evaluation method and system for a DC distribution network control and protection device, and the method comprises the steps: collecting the historical operation and maintenance cost data of the control and protection device at different stages, and building a multi-stage operation and maintenance cost mathematical model according to the historical operation and maintenance cost data by a polynomial regression method; establishing a full life cycle cost function of the control and protection device; establishing a system benefit function according to the power grid system benefit, and establishing a full-life-cycle yield rate function of the control and protection device according to the system benefit function and the full-life-cycle cost function; based on the operation and maintenance cost mathematical model, the full-life-cycle cost function and the system benefit function, converting the full-life-cycle yield function to obtain a final yield function; and solving an extreme point of the final return rate function to obtain the optimal overhaul time of the control and protection device, determining an overhaul time threshold according to the optimal overhaul time, and judging that the control and protection device is in a scrapped state when the overhaul time threshold of the control and protection device is reached. The problem that the equipment value evaluation error is large in the prior art is solved.
Description
technical field [0001] This application relates to the technical field of power equipment operation and maintenance, and in particular to a method and system for evaluating the value of a DC distribution network control and protection device. Background technique [0002] Equipment asset management is an important link in the operation and management of power grid companies. It plays an important role in the reliable operation of power grids and is a key means for power companies to maximize investment returns. DC distribution technology is based on advanced power electronics technology, using converters, DC transformers, DC circuit breakers and control and protection devices to ensure the flexible, safe and reliable operation of DC distribution networks. Since the current DC power distribution technology and equipment are still immature, asset management is difficult, and operation and maintenance costs are high, it is urgent to propose a reasonable equipment management met...
Claims
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IPC IPC(8): G06Q10/00G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q10/20G06Q50/06Y04S10/50
Inventor 唐捷陈建福曹安瑛杨锐雄邹国惠裴星宇李建标廖雁群刘尧邓旭阳王增超易仕敏黄珊黄玥喻松涛陈夏李巍巍
Owner GUANGDONG POWER GRID CO LTD