种配电网电压无功优化的线性逼近求解方法

• Format: Patent
• Language: Chinese
• Published: 03.07.2018
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明公开种配电网电压无功优化的线性逼近求解方法，属于电力系统优化运行领域。首先，以配电网中分布式电源及离散无功调节设备的无功出力为状态变量，以配电网运行网损为目标函数建立主动配电网无功优化模型；其次，对主动配电网无功优化模型通过线性化得到线性近似模型；最后，通过潮流分析与线性近似模型的交替迭代求解逼近原始非凸问题的解。本发明针对带有环网运行的配电网设计，可充分利用分布式电源无功调节能力与其他无功补偿设备的协调配合，抑制分布式电源并网带来的过电压与欠电压问题，降低配电网运行损耗，提高配电网消纳分布式电源的能力，保障配电网安全经济运行，并且模型求解简单可靠，不会产生不可行解。 The invention, which belongs to the optimization operation field of the power system, discloses a linear approximation solution method of voltage and reactive power optimization of a distribution network. An active distribution network reactive power optimization module is established by using reactive power outputs of a distributed power supply and a discrete reactive power regulating device in a distribution network as state variables and using the operation transmission loss of the distribution network as an objective function; linearization is carried out on an active distribution network reactive power optimization module to obtain a linear approximation model; and alternate iteration is carried out on a loaf flow anal