Active power distribution network operating method based on electricity cost differentiation
A technology for active distribution network and electricity cost, which is applied in data processing applications, instruments, forecasting, etc., to achieve the effects of improving utilization rate, realizing peak shaving and valley filling, and absorbing output
Active Publication Date: 2014-12-24
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Therefore, the current power distribution system is not designed for the access of a large number of distributed power sources. With the access of a large-scale DER distribution network, it will also bring many adverse effects to the distribution network, such as short
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[0052] The operation method of the active distribution network of the present invention based on the differentiation of electricity cost includes the following steps:
[0053] S1 signs a differentiated power supply agreement with different electricity costs with power users, so that the distribution network can adjust or interrupt the user load, and use the real-time electricity price pricing method based on the expected load rate rolling correction to dynamically adjust the user load Regulate, to solve the problem that the load rate does not meet the constraint conditions caused by the use of real-time electricity prices to dynamically adjust the load, by using the adjustment rate estimation method based on the probability estimation of the adjustable load and the interruptable load estimation method, the load rate is based on the adjustable load Preventive control and corrective control based on interruptible load;
[0054] The signed difference electricity cost power supply agre...
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The invention relates to an active power distribution network operating method based on electricity cost differentiation. According to the method, source and load coordinated operation control is conducted by means of a real-time electricity price and electricity cost differentiation electricity supply agreement, and a power distribution network has the flexible control ability of adjusting or interrupting loads of users who sign the differentiation electricity supply agreement by means of the differentiation electricity supply agreement which is characterized in different electricity cost levels and capable of achieving adjustment and interruption of loads. On this basis, dynamic adjustment of the load of the power distribution network can be achieved by means of electricity price with the real-time electricity pricing method based on expected load rate roll correction, and meanwhile, methods for prevention and control over the load rate based on adjustable loads and for correction control over the load rate based on interruptible loads are provided to solve the probable problem that the load rate does not meet restraint conditions during real-time electricity price adjustment. By the adoption of the operation method, the fluctuation of the load rate can be effectively restrained, load leveling can be achieved, and absorption of distributed generation and full utilization of distribution transform capacity are effectively guaranteed.
Description
Technical field [0001] The invention relates to a method for operating a power distribution network, in particular to an operating method of an active power distribution network based on electricity cost differentiation. Background technique [0002] With the continuous increase of the access scale of Distributed Energy Resource (DER) in the distribution network, the power supply of power users in the distribution network has gradually changed from the unidirectional power supply mode of the distribution network to the distribution network. The two-way power supply mode of the grid and distributed energy. The gradual transformation of the distribution network from a traditional passive network to an active network also makes the load power characteristics of power users show the bidirectional characteristics of power input and power output; at the same time, due to the random intermittent nature of DER output power, it will also Increase the random characteristics of the load po...
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Inventor 钟清余南华陈炯聪宋旭东张晓平尤毅郑文杰黄嘉健
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID