无功运行优化问题的关键在于获得最优解或较好的次优解。
The key to the optimization of reactive power operation is to get optimum value or satisfying quasi optimum value.
无功优化是电力系统电压稳定与经济运行的核心问题，也是提高电力系统电压质量的重要措施。
Var optimization is core problem of voltage stability and economic operation of electric power system, also important measure to improve voltage quality.
电力系统无功功率优化是电力系统安全运行研究的一个重要组成部分。
Reactive power optimization in electric power system is important part for electric power safe run research.
对电网进行无功电压优化，是一个既直接影响系统电压质量，又关系到电网经济运行的重要问题。
Reactive power optimization of power network is an important problem which directly influences voltage quality of the system as well as which relates to economical operation of power network.
电力系统无功优化对保证电压质量、降低运行损耗，实现电网的安全经济运行具有重要意义。
Reactive power optimization is of great importance to voltage quality guarantee, power loss minimization and thus security and economic operation of power system.
根据电力系统实际运行中负荷不断变化的情况，提出了动态无功优化问题的完整数学描述和计算方法。
With the consideration of the varying load of power system, a complete mathematical representation of dynamic reactive power optimization and its calculation method are presented.
电力系统无功优化是保证系统安全、经济运行的一项有效手段，是降低网损、提高电压质量的重要措施。
Reactive power optimization is one of the most control methods to ensure power system operation securely and economically, and an effective measure to improve the voltage profile and reduce the loss.
电力系统无功优化配置是保证电力系统安全、经济运行的一项有效手段，是提高电压质量的重要措施。
Reactive power optimization is an effective method to keep power system safe and economy, and it's an important measure to improve voltage quality.
电力系统的无功优化和无功补偿是提高系统运行电压，减小网损，提高系统稳定水平的有效手段。
Reactive power optimization and reactive power compensation in electric power systems are the efficacious means to elevate operation voltage, reduce power loss, and increase the stability level.
电力系统无功优化是提高电压质量、降低系统运行网损、保证系统安全经济运行的有效手段。
Reactive power optimization in power system is an effective means to improve voltage quality, reduce network losses and ensure power system operates in a secure and economical way.
电力系统无功优化配置是保证系统安全、经济运行的一项有效手段，是提高电压质量的重要措施。
Reactive power optimization is an effective measure to keep power system safe and economical, and an important method to improve voltage profile.
传统的无功优化通常考虑的仅仅是提高电网的电压质量和降低网损，当系统的传输容量有足够的裕度时，这种只考虑经济效益和基本运行约束的做法是适当的。
The general reactive power optimization is only to reduce the loss of the system and improve the quality of voltage, which is suitable when system has enough power capability.
为减小覆冰对电网正常运行的影响，提出了一种输电线可控线损防覆冰无功优化控制方法。
To reduce the impact of icing on a power grid, a method based on the controllable line losses by reactive power control is presented.
在潮流计算的基础上，以配电网年运行纯效益最大为目标函数，建立了无功补偿优化数学模型。
Based on the power flow calculation, an optimization model of reactive power compensation is established, in which the maximum of annual pure efficiency is taken as objective function.
通过在线无功优化，降低网损、保证电压质量，对供电企业的经济运行是非常必要的。
It is very necessary for economic run of electric enterprise to decrease network loss and to optimize the node voltage through the real-time online control of reactive power optimization.
但在电力系统实际运行中，由于负荷是不断变化的，因此针对单个负荷断面的静态无功优化是不能满足实际运行需要的。
But the load is changing in any time in the practical power system, so the traditional reactive power optimization can't meet the practical need.
通过无功优化来改善电压质量、降低运行网损以及提高系统运行的安全稳定性显得尤为必要。
It is necessary to use reactive power optimization to improve voltage quality, reduce operation network loss and improve security and stability of the operation system.
根据电力系统实际运行中负荷不断变化的情况，提出了一种新的电力系统时变无功优化算法。
A new algorithm is proposed in the paper for time-varying reactive power optimization according to the load variation.
如何科学利用和优化配置配电网络的无功资源，降低运行损耗，提高供电质量，越来越受到关注和重视。
How to utilize and distribute reactive power resources rationally and scientifically, reduce and operating losses, improve power supply quality, is being paid more and more attention.
如何科学利用和优化配置配电网络的无功资源，降低运行损耗，提高供电质量，越来越受到关注和重视。
How to utilize and distribute reactive power resources rationally and scientifically, reduce and operating losses, improve power supply quality, is being paid more and more attention.
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