DOI:10.1007/s40565-017-0353-5 |
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Dynamic VAR planning methodology to enhance transient voltagestability for failure recovery |
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Net amount: 1228 |
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Author:
Di YANG1
, Haozhong CHENG2
, Zeliang MA3
, Liangzhong YAO4
,
Zhonglie ZHU3
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Author Affiliation:
1. State Grid Pudong Power Supply Company, SMEPC,
Pudong District, Shanghai 200122, China
2. Department of Electronic Information and Electrical
Engineering, Shanghai Jiao Tong University,
Minhang District, Shanghai 200240, China
3. East China Grid Company Limited,
Pudong District, Shanghai 200120, China
4. China Electric Power Research Institute,
Haidian District, Beijing 100192, China
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Foundation: |
This work was supported by the National Basic
Research Program (973 Program) of China (No. 2014CB23903) and
National Nature Science Foundation of China (No. 51261130473). |
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Abstract: |
In recent years, failure recovery after faults is
concerned and discussed worldwide as an important and
hot topic. Facing the challenge of heavy loads and ultrahigh
voltage transmission, it’s urgent to propose some
solutions to enhance transient voltage stability for failure
recovery. Therefore, a novel dynamic volt ampere reactive
(VAR) planning methodology is proposed in this paper to
help failure recovery and improve transient voltage stability
after contingencies. First, a transient voltage fluctuation
(TVF) index is proposed to evaluate transient voltage
condition after faults. Then dynamic compensation
sensitivity is presented for searching the best candidate
locations. Following that, the dynamic VAR planning
methodology based on an improved Tent chaos multi-objective
algorithm is discussed in detail. There are two
optimization objects in the optimization. One is to minimize
TVF to enhance transient voltage stability for failure
recovery. And the other optimization is to minimize
dynamic VAR investment cost and operation cost. Finally,
IEEE 39 power system and a practical power system are
analyzed and discussed. The proposed dynamic VAR
planning methodology can support enough reactive power
for failure recovery. With the least SVC planning amount
and the power loss cost, it can greatly decrease the system
TVF index and enhance the transient voltage stability. It’s
proved that the proposed dynamic VAR planning optimization
is effective and helpful for safety operation of
power system. |
Keywords: |
Dynamic VAR planning, Failure recovery,
Improved Tent mapping chaos optimization, Transient
stability |
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Online Time:2018/07/20 |
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