China Electric Power Research Institute Company Limited

State Grid Corporation of China

Lijuan Hu

Wanxing Sheng

Keyan Liu

Dongli Jia

Yinglong Diao

Xueshun Ye

Kaiyuan He

Xiaoli Meng

Weijie Dong

Jiangang Tang

Yajie Li

Yongmei Liu

A digital simulation system of a power distribution network, comprising: a client and a server end. The server end is a simulation server cluster composed of several simulation servers; the simulation server cluster and the client are mutually connected through a communication bus, wherein the client is configured to use a DCOM component to invoke a simulation service provided by the server end, and the server end is configured to distribute a task to be processed to each cluster node. Constructing the above-mentioned digital simulation system facilitates an optimal planning and operation of a smart power distribution network, thereby improving the utilization efficiency and reliability of the smart power distribution network and reducing the loss of a power outage.

Digital simulation system of power distribution network

A method of predicting the operation reliability of a distribution network, the method being based on an ARIMA model. By establishing an ARIMA model predict a user monthly power outage count; convert a non-smooth element outage count time series to a smooth time series; perform regression on only lagged values of a dependent variable, and on current values and lagged values of a stochastic error term, so as to establish a user monthly power outage count model; according to a prediction result sample an outage point, and at the same time, taking into account a real time load operating state, establish a failure mode effects table based on TLOC criteria and PLOC criteria; and calculate a system recovery time for each instance of device outage, and finally obtain a whole-year reliability index.

Method of predicting distribution network operation reliability

An embodiment provides a multi-time-scale Digital/Analog (D/A) hybrid simulation system and simulation method therefor for a complex power distribution network and a computer storage medium, and is intended to solve existing problems about multi-time-scale modeling and simulation of the complex power distribution network and simulation accuracy and efficiency of the complex power distribution network. The embodiment provides a multi-time-scale D/A hybrid simulation solution for the complex power distribution network, designs a D/A hybrid interface device and a coordination mechanism, and may effectively implement multi-time-scale real-time simulation of equipment (for example, power electronic equipment including a complex topological structure and a novel control strategy) of the complex power distribution network and multi-time-scale simulation analysis on grid connection/disconnection of a distributed power supply such as a wind-driven generator, a photovoltaic power generator and a gas turbine and an electric vehicle as well as interactive influence with the power distribution network.

Multi-time-scale digital/analog hybrid simulation system and method for power distribution network and storage medium

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Beijing, China

Lijuan Hu