Topology dynamic identification method for medium-voltage power distribution network
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A dynamic identification and distribution network technology, applied in the direction of electrical components, data exchange network, data processing applications, etc., can solve the problem of manual update again, to meet the speed requirements and reduce the workload
Active Publication Date: 2020-07-17
上海道博电气有限公司
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[0007] The purpose of the present invention is to provide an identification method for automatic generation, distributed creation and storage of topology data information in a medium-voltage distribution network to solve the need for topology information changes caused by the update of the topology information of the medium-voltage distribution network Manually update again, so that the distribution terminal can adaptively report the topology information of the distribution network to storage and call
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Embodiment 1
[0034] This embodiment provides a topology dynamic identification method for a medium-voltage distribution network, including the following steps:
[0035] Step s1: Collect the upstream voltage, downstream voltage and time data of one of the power distribution terminal collection lines,
[0036] Firstly, the power distribution terminal collects the upstream and downstream voltages of the line, and respectively records the upstream and downstream power-on time of the line, and then judges the contact position of the power distribution terminal according to the switch state,
[0037] Step s2: The power distribution terminal broadcasts the attribute information of the power distribution terminal through the network:
[0038] The power distribution terminal broadcasts its own switch information to the outside world, including but not limited to switch position, IP information, switch last action time and upstream and downstream voltage change time information of the line;
[0039...
Embodiment 2
[0051] This embodiment provides a topology dynamic identification method for medium-voltage distribution network, the specific analysis process is as follows:
[0052] The initial state of the entire distribution network, such as figure 1 as shown,
[0053] Before switch 101 is closed,
[0054] There is voltage on the line at 101-A, and there is no voltage at 101-B.
[0055] Switch 101 receives the attribute information of other switches, and finds that except switch 107-B is under voltage, other lines are in a state of no voltage at A and B, and switch 101 and switch 107 are powered by substation 01 and substation 02 respectively.
[0056] Therefore, the voltage change time at 101-A must be inconsistent with the voltage change time at 107-B. Therefore, it is judged that the switch 101 and the switch 107 are grid power point switches.
[0057] When the switch 101 is closed, its switch attribute information is broadcast, such as figure 2Shown:
[0058] After receiving th...
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Abstract
The invention discloses a topology dynamic identification method for a medium-voltage power distribution network. The method comprises the following steps: s1, acquiring upstream voltage, downstream voltage and time data of a power distribution terminal acquisition line; s2, by the power distribution terminal, broadcasting the attribute information of the power distribution terminal to the outsidethrough the network; s3, by the power distribution terminal, acquiring the attribute information of other power distribution terminals in the network through the network; s4, by the power distribution terminal, dynamically generating power grid topology information associated with equipment of the power distribution terminal according to broadcast information published by other power distributionterminals; s5, by the power distribution terminal, comparing the acquired attribute information of the power distribution terminal with the attribute information of the power distribution terminal; and s6, forming a topology network. The problem that topology information changes due to updating of topology information of a medium-voltage power distribution network and needs to be updated again manually is solved, so that a power distribution terminal can report, store and call the topology information of the power distribution network in a self-adaptive mode.
Description
technical field [0001] The invention belongs to the field of electric power automation, and in particular relates to a topology dynamic identification method for a medium-voltage distribution network. Background technique [0002] With the construction of power systems and the development of distribution network automation, distributed feeder automation functions are increasingly applied to distribution medium-voltage equipment. Distributed feeder automation functions (distributed FA) include fault location of feeder lines , Fault isolation, and line self-healing functions. However, this function requires the medium-voltage distribution network to configure the network topology of the entire distribution network, and subscribe and publish the switch status information on both sides of the line according to the network topology information. However, the structure of the distribution network is huge and complex, and the structure of the power grid often undergoes various chan...
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