Outdoor node state detection and transmission instrument for power transmission-distribution network based on distributed generation

A technology of distributed power generation and node status, applied in electrical components, transmission systems, circuit devices, etc., to solve the effect of safe transmission

Inactive Publication Date: 2013-08-07
HUNAN TLNZ SOLAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005]At present, there is still a lack of real-time tracking, analysis and control systems for the operation of each node and branch of the distributed power grid

Method used

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  • Outdoor node state detection and transmission instrument for power transmission-distribution network based on distributed generation
  • Outdoor node state detection and transmission instrument for power transmission-distribution network based on distributed generation
  • Outdoor node state detection and transmission instrument for power transmission-distribution network based on distributed generation

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Embodiment Construction

[0035] On each node of the transmission and distribution network, according to the number of branches of the node, each branch is equipped with a data acquisition front-end, and the data acquisition front-end and the data processing and transmission unit are internally connected by a communication port (such as figure 1 ), including the data acquisition front-end equal to the number of branches and two parts of data processing and transmission. Data acquisition front end (such as figure 2 ) For the voltage zero-crossing time of the user-side power grid, line voltage UAB, UBC, UAC; phase current IA, IB, IC, voltage and current are vectors containing zero-crossing time information; positive sequence impedance Z1; positive sequence capacitance C1; Positive-sequence admittance Y; zero-sequence impedance Z0; zero-sequence capacitance C0; zero-sequence mutual inductance ZOM; zero-sequence induction potential UZ; induced voltage U0; frequency f; For detection, the standard signal ...

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Abstract

The invention relates to an outdoor node state detection and transmission instrument for a power transmission-distribution network based on distributed generation. The instrument comprises a system module and a control center. The system module comprises data acquisition front ends connected with a data processing and transmission unit. The data acquisition front ends are connected to nodes and branches of a transmission and distribution grid, and the system module is connected with the control center. State information is measured and calculated safely and precisely and is also transmitted safely, management and analysis of state information of thousands of users by the control center is guaranteed, and the control center is guaranteed to centrally and safely dispatch the grid or directly control action of actuators of the grid according to the states of the nodes.

Description

technical field [0001] The invention relates to a measuring instrument and a communication instrument, in particular to an outdoor state detection and transmission instrument for a transmission and distribution network that can perform operating parameters, state detection, and various communications and controls in the operating environment of a distributed power generation network. [0002] Background technique [0003] With distributed power generation, there will be reverse power transmission in the power grid. It is necessary to protect the safety of outdoor lines. At the same time, the control center also needs to safely dispatch the power grid, so outdoor status information is required. [0004] After distributed power generation, it is necessary to constantly understand the status of each branch and the impact of the branch on the entire power grid. It is necessary to calculate, analyze and process relevant information parameters to facilitate the control center to ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H04L29/08
CPCY04S40/127Y02E60/7861Y02E60/00Y04S40/126
Inventor 张恩理娄志林贺雪平
Owner HUNAN TLNZ SOLAR TECH
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